KEPCO BOP-MG Operator's Manual

OPERATOR’S MANUAL

BOP-MG 1KW

HIGH POWER BIPOLAR POWER SUPPLY

KEPCO INC.

An ISO 9001 Company.

BOP-MG 1KW

POWER SUPPLY

ORDER NO.

IMPORTANT NOTES:

1) This manual is valid for the following Firmware Versions:

FIRMWARE VERSION NOTE.

3.05 and higher

2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num­bers. Before using this Instruction Manual, check your equipment firmware version num­ber to identify your model. If in doubt, contact your nearest Kepco Representative, or the
Kepco Documentation Office in New York, [phone], requesting the correct revision
for your particular model and firmware version number.

3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.

Data subject to change without notice.

MODEL

©2012, KEPCO, INC
P/N 243-1027-r15b

KEPCO, INC. z 131-38 SANFORD AVENUE z FLUSHING, NY. 11355 U.S.A. z TEL [phone] z FAX [phone]

KEPCO®

THE POWER SUPPLIER™

email: [e-mail] z World Wide Web: http://www.kepcopower.com

Declaration of Conformity

Application of Council directives:

Standard to which Conformity is declared:

EN61010-1:1993 (Safety requirements for electrical equipment for measurement,

control and laboratory use)

Manufacturer's Name and Address:

Importer's Name and Address:

Type of Equipment:

Model No.:

73/23/EEC (LVD)
93/68/EEC (CE mark)

KEPCO INC.
131-38 SANFORD AVENUE
FLUSHING, N.Y. 11355 USA

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Component Power Supply

[PRODUCT MODEL NUMBER]

Y

Year of Manufacture:

I, the undersigned, declare that the product specified above, when used in conjunction with the condi­tions of conformance set forth in the product instruction manual, complies with the requirements of the
Low Voltage Directive 73/23/EEC, which forms the basis for application of the CE Mark to this product.

Place: KEPCO Inc.

131-38 Sanford Ave.
Flushing, N.Y.11355 USA

Saul Kupferberg

(Full Name)

Date:

228-1348 DC-COMP/INST 031912 A

VP OF SALES

(position)

Conditions of Conformance

When this product is used in applications governed by the requirements of the EEC, the following restric­tions and conditions apply:

1. For European applications, requiring compliance to the Low Voltage Directive, 73/23/EEC, this power
supply is considered a component product, designed for “built in“ applications. Because it is incom­plete in construction, the end product enclosure must provide for compliance to any remaining electri­cal safety requirements and act as a fire enclosure. (EN61010-1 Cl. 6, Cl. 7, Cl.8, Cl. 9 and EN61010­1 annex F)

2. This power supply is designed for stationary installation, with mains power applied via a detachable
power supply cord or via direct wiring to the source power terminal block.

3. This power supply is considered a Class 1 (earthed) product, and as such depends upon proper con­nection to protective earth for safety from electric shock. (EN61010-1 Cl. 6.5.4)

4. This power supply is intended for use as part of equipment meant for test, measurement and labora­tory use, and is designed to operate from single phase, three wire power systems. This equipment
must be installed within a suitably wired equipment rack, utilizing a three wire (grounded) mains con­nection. See wiring section of this manual for complete electrical wiring instructions. (EN61010-1 Cl.

6.5.4 and Cl.6.10.1)

5. This power supply has secondary output circuits that are considered hazardous, and which exceed
100V d-c, able to deliver current greater than 10A d-c.

6. The output wiring terminals of this power supply have not been evaluated for field wiring and, there­fore, must be properly configured by the end product manufacturer prior to use.

7. This power supply employs a supplementary circuit protector in the form of a circuit breaker mounted
on the front panel. This circuit breaker protects the power supply itself from damage in the event of a
fault condition. For complete circuit protection of the end product, as well as the building wiring, it is
required that a primary circuit protection device be fitted to the branch circuit wiring. (EN61010-1 Cl.

9.6.2)

8. Hazardous voltages are present within this power supply during normal operation. All operator adjust­ments to the product are made via externally accessible switches, controls and signal lines as speci­fied within the product operating instructions. There are no user or operator serviceable parts within
the product enclosure. Refer all servicing to qualified and trained Kepco service technicians.

B 228-1529 COND/CONFORM 031912

SAFETY INSTRUCTIONS

1. Installation, Operation and Service Precautions

This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2,
Pollution Degree 2. Hazardous voltages are present within this product during normal operation. The prod­uct should never be operated with the cover removed unless equivalent protection of the operator from
accidental contact with hazardous internal voltages is provided:

!

!

!

There are no operator serviceable parts or adjustments within the product enclosure.
Refer all servicing to trained service technician.

Source power must be removed from the product prior to performing any servicing.

This product is factory-wired for the nominal a-c mains voltage indicated on the rat­ing nameplate located adjacent to the source power connection on the product's rear
panel. To reconfigure the product input for other nominal mains voltages as listed
herein, the product must be modified by a trained service technician.

2. Grounding

This product is a Class 1 device which utilizes protective earthing to ensure operator safety.

The PROTECTIVE EARTHING CONDUCTOR TERMINAL must be properly con-

!

nected prior to application of source power to the product (see instructions on instal­lation herein) in order to ensure safety from electric shock.

PROTECTIVE EARTHING CONDUCTOR TERMINAL - This symbol indicates the
point on the product to which the protective earthing conductor must be attached.

EARTH (GROUND) TERMINAL - This symbol is used to indicate a point which is
connected to the PROTECTIVE EARTHING TERMINAL. The component installer/
assembler must ensure that this point is connected to the PROTECTIVE EARTH­ING TERMINAL.

CHASSIS TERMINAL -This symbol indicates frame (chassis) connection, which is
supplied as a point of convenience for performance purposes (see instructions on
grounding herein). This is not to be confused with the protective earthing point, and
may not be used in place of it.

3. Electric Shock Hazards

This product outputs hazardous voltage and energy levels as a function of normal operation. Operators
must be trained in its use and exercise caution as well as common sense during use to prevent accidental
shock.

This symbol appears adjacent to any external terminals at which hazardous voltage

!

228-1352 SAFETY - (COVER REMOVAL) 031912 C

levels as high as 500V d-c may exist in the course of normal or single fault condi­tions.

This symbol appears adjacent to any external terminals at which hazardous voltage
levels in excess of 500V d-c may exist in the course of normal or single fault condi­tions.

OPERATOR

SAFETY INSTRUCTIONS

Read these safety instructions, as well as the applicable installation and operating instructions contained in
this manual before using the power supply.

WARNING

Do not touch the output terminals. The output is dangerous. Electric shock can cause injury or death.

Do not remove the cover or disassemble the unit. There are no operator serviceable components or
adjustments inside the unit. High voltage components inside the unit can cause serious injury even with
input power disconnected.

Service must be referred to authorized personnel. Using the power supply in a manner not specified by
Kepco. Inc. may impair the protection provided by the power supply. Observe all safety precautions noted
throughout this manual. The following table lists symbols used on the power supply or in this manual where
applicable.

The liquid in the LCD is hazardous: do not lick or swallow. Wash skin and clothes immediately and thor­oughly upon exposure.

SAFETY SYMBOLS

SYMBOL Meaning

WARNING: RISK OF ELECTRIC SHOCK.
INDICATES THE POSSIBILITY OF BODILY INJURY OR DEATH.

CAUTION: REFER TO REFERENCED PROCEDURE.

!

INDICATES THE POSSIBILITY OF EQUIPMENT DAMAGE.

CAUTION

If this power supply is used in OEM equipment, the OEM equipment manufacturer is responsible for
attaching appropriate warning labels on the OEM equipment.

Operating the power supply outside the specified limits for input voltage, temperature, or other environ­mental conditions noted in this manual can damage the power supply and void the warranty.

DO NOT: wipe the front panel with hard materials, nor apply excessive force to the surface. DO NOT
expose to extended periods of bright sunshine or UV light.

Safety Messages

The BOP protection circuitry is designed to protect the load against unregulated high voltages and protect
the BOP from extensive damage in the event of a component failure. Refer to Table 1-2 for more informa­tion regarding the protection circuits.

D OP-SAFETY 031912

LIST OF

WARNINGS AND CAUTIONS

PAGE WARNING/CAUTION

3-20 WARNING: For inductive loads, and especially superconducting magnet type loads,

the inherent offset of the BOP in the OFF state may generate significant
current in the circuit. A properly rated switch in parallel with a resistor
must be connected between the power supply and the load. The switch
must be open and the BOP front panel LCD must read 0V, 0A before re­moving or installing connections between BOP and load.

3-20

3-21

3-30

3-35

WARNING: For both inductive loads and constant-current-type active electronic

loads when the BOP output is set to OFF, a path is provided for absorbing
either the energy accumulated in the reactance of the load during the ON
state, or energy delivered by an electronic load. This prevents damage to
the load and power supply as well as providing safety for the user. How­ever, In addition to the built-in safety features, constant-current-type ac­tive electronic loads must be adjusted to zero and the BOP front panel
LCD must read 0V, minimum current, before handling the power supply­to-load connections.

WARNING: Accessing the BOP after the output is disabled in BATTERY mode is haz-

ardous because (1) high current arcing is possible and (2) either the ex­ternal battery voltage, or the voltage (±Voltage Protection max) on the
BOP output terminals may be dangerous. Therefore, for battery and con­stant-voltage-type active electronic loads it is recommended that two
properly rated external switches be installed for safety: one in series with
the battery, and one across the BOP output. After the unit is set to OFF,
first open the switch in series with the battery, then close the switch
across the BOP output to ensure safety before handling BOP connec­tions. When connecting the battery, the switch across the output should
be opened after the connections are complete and then the switch in se­ries with the battery should be closed. If the constant-voltage-type active
electronic load is adjusted to zero before handling the power supply-to­load connections, only the switch across the BOP output is required.

WARNING: Be sure that output power is OFF (Standby indicator lit) while connecting

monitoring device. Be sure that connections are secure and that termi­nals are not inadvertently shorted.

WARNING: Dangerous voltages are present at the output terminals: Do not touch!

Disconnect load before running this test.

4-8

4-14

BOP 1KW OPR 3/19/12 E

WARNING: The sense resistor will be dissipating full rated current of the BOP. If it is

WARNING: The sense resistor will be dissipating full rated current of the BOP. If it is

hot to the touch, the sense resistor value, power rating and/or cooling are
incorrect; refer to PAR. 4.3 and Table 4-2.

hot to the touch, the sense resistor value, power rating and/or cooling are
incorrect; refer to PAR. 4.4 and Table 4-2.

LIST OF

WARNINGS AND CAUTIONS

PAGE WARNING/CAUTION

2-6 CAUTION: it is recommended that source power of external equipment connected to

the Analog Port be applied through an isolating transformer To avoid
ground loops or possible damage to the BOP due to incorrect equipment
a-c wiring (e.g., defeating of ground connection).

2-8 CAUTION: The rack must provide support at the rear (within 6 inches of the rear pan-

2-8 CAUTION: When working with active loads, the voltage or current of the active load

2-10 CAUTION: Never connect the load to the sense terminals. Monitoring instruments

2-10 CAUTION: Never connect the BOP OUTPUT terminal (or the load terminal tied to the

2-10 CAUTION: Do not connect both the load and the programming device return (com-

2-10 CAUTION: The safety features incorporated into the BOP to handle energy from Ac-

el). Optional slides can also be used (see PAR. 2.4.2).

must not exceed the maximum voltage or current rating of the BOP. Oth­erwise the overvoltage or overcurrent protection will shut down the pow­er supply.

(e.g., DVM, etc.) are the only external equipment that may be safely con­nected to the sense terminals.

OUTPUT terminal) to earth-ground. Otherwise, if the controlling device is
grounded, the BOP can be damaged by the protection limit output current
flowing inside the BOP along the programming signal return path.

mon) to earth-ground potential. Otherwise, If the COMMON power con­nection between the BOP and the load is lost, then the BOP can be
damaged by output current flowing inside the BOP along the program­ming signal return path.

tive loads are unable to protect the power supply or the load if input pow­er to the BOP is lost or if the BOP Malfunctions. It is recommended that
the user monitor “Power OK” flag pins 3 and 4 of the external Protect Port
(see Table 2-4) and implement a fast-acting means of disconnecting ca­pacitive loads or crowbarring inductive loads to prevent damage to both
the BOP and the load in the event of input power loss.

2-14 CAUTION: For parallel configurations, Remove links between (COM S) and (COM

OUT) terminals of all slaves to prevent damage to the unit and maintain
system accuracy.

2-14 CAUTION: Connecting multiple units to different a-c input sources may damage the

BOP power supplies and/or the load.

2-20 CAUTION: The units are now configured as slave(s) to be controlled only by the master.

Do not use the slave keypad, RS 232 port or GPIB port to try to control the
slave(s).

3-3 CAUTION: Pressing RESET will cause voltage transients to appear at the output

3-5 CAUTION: DO NOT repeatedly toggle the circuit breaker/switch as this may damage

3-12 CAUTION: When the ADJUST control is rotated, the active parameter is immediately

F BOP 1KW OPR 3/19/12

which may damage a connected load.

the unit.

effective if the output is enabled (on = STANDBY indicator not lit). The
voltage/current applied to the load changes as the ADJUST control is ro­tated.

LIST OF

WARNINGS AND CAUTIONS

PAGE WARNING/CAUTION

3-19 CAUTION: When working with active loads, always adjust the BOP protection limits

to be above the maximum values of voltage or current expected from the
load. For example, when the BOP is operating in voltage mode sinking
energy from a constant current type load, set the current protection limits
of the BOP above the maximum current expected from the load.

3-26 CAUTION: Before Pressing

up screen, perform the following steps to avoid unexpected voltages or
currents from previous settings being briefly applied to the load when the
waveform is first executed.

3-35 CAUTION: Pressing RESET will cause voltage transients to appear at the output

which may damage a connected load. Switch is recessed to prevent inad­vertent activation.

3-53 CAUTION: When the serial port has received an XOFF, the error message -400, QUE

error will be placed in the queue to indicate the loss of transmitted infor­mation due to a received XOFF character. When XON is received, the unit
will transmit all data in it's buffer followed by the exclamation character
(!). This (!) character is not part of any message from the BOP and indi­cates the transmission buffer has been cleared and the BOP is idle.

4-11 CAUTION: If the CALIBRATE ZERO

first, as it affects all other output calibrations.

@ to enter the Saved Waveform Screen from the power-

! function is available, perform this function

BOP 1KW OPR 3/19/12 G/(H Blank)

TABLE OF CONTENTS

SECTION PAGE

SECTION 1 - INTRODUCTION

1.1 Scope of Manual ..................................................................................................................................... 1-1

1.2 General Description................................................................................................................................. 1-1

1.3 Specifications .......................................................................................................................................... 1-1

1.4 Local Control ........................................................................................................................................... 1-14

1.5 Remote Control ....................................................................................................................................... 1-14

1.6 Features .................................................................................................................................................. 1-14

1.6.1 Digital Calibration............................................................................................................................... 1-14

1.6.2 voltage/current Protection.................................................................................................................. 1-14

1.6.3 Waveforms......................................................................................................................................... 1-14

1.6.4 Saving and Recalling Settings........................................................................................................... 1-15

1.6.5 External Reference (Analog Control)................................................................................................. 1-15

1.6.6 External Limits ................................................................................................................................... 1-15

1.6.7 User-defined Voltage/Current Maximum Values (Software Limits) ................................................... 1-15

1.6.8 Parallel and Series Configurations .................................................................................................... 1-15

1.6.9 Energy Recuperation......................................................................................................................... 1-16

1.7 Equipment Supplied ................................................................................................................................ 1-16

1.8 Accessories ............................................................................................................................................. 1-16

1.9 Safety ...................................................................................................................................................... 1-16

SECTION 2 - INSTALLATION

2.1 Unpacking and Inspection ....................................................................................................................... 2-1

2.2 Terminations and Controls ...................................................................................................................... 2-1

2.3 Preliminary Operational Check................................................................................................................ 2-6

2.4 Installation ............................................................................................................................................... 2-8

2.4.1 Rack Mounting................................................................................................................................... 2-8

2.4.2 Slide Installation................................................................................................................................. 2-8

2.5 Wiring Instructions................................................................................................................................... 2-8

2.5.1 Safety Grounding............................................................................................................................... 2-8

2.5.2 Source Power Connections ............................................................................................................... 2-8

2.5.3 D-C Output Grounding....................................................................................................................... 2-8

2.5.3.1 Grounding Network Configuration................................................................................................ 2-9

2.5.4 Power Supply/Load Interface............................................................................................................. 2-9

2.5.5 Load Connection - General................................................................................................................ 2-10

2.5.6 Load Connection Using Local Sensing.............................................................................................. 2-11

2.5.7 Load Connection Using Remote Sensing.......................................................................................... 2-11

2.6 Cooling .................................................................................................................................................... 2-11

2.7 Setting up the unit ................................................................................................................................... 2-11

2.7.1 Consider the Load Type .................................................................................................................... 2-11

2.7.2 Setup for Local Operation.................................................................................................................. 2-11

2.7.3 Setup for Remote Operation via GPIB............................................................................................... 2-13

2.7.4 Setup for Remote Operation via RS 232C......................................................................................... 2-13

2.8 Multiple Unit Configurations .................................................................................................................... 2-13

2.8.1 Multiple Unit Source Power ............................................................................................................... 2-14

2.8.2 Multiple Unit Protection...................................................................................................................... 2-14

2.8.3 Configuring Parallel, Series, 2 X 2 or 3 X 2 combinations................................................................. 2-19

2.8.4 Operating Instructions for Multiple Unit Combinations....................................................................... 2-23

2.8.5 Restoring a Unit to Standalone Operation ......................................................................................... 2-24

2.8.6 Changing Multiple Unit configurations ............................................................................................... 2-24

SECTION 3 - OPERATION

3.1 General.................................................................................................................................................... 3-1

3.2 Power Supply Basics............................................................................................................................... 3-1

3.2.1 Keypad Description............................................................................................................................ 3-1

3.2.2 LCD and Power-up Screen Description............................................................................................. 3-3

3.2.3 Turning the Power Supply On............................................................................................................ 3-5

BOP-1K 031912 i

TABLE OF CONTENTS

SECTION PAGE

3.2.4 How to Access the menus ................................................................................................................ 3-6

3.2.4.1 Overall menu Structure ............................................................................................................... 3-6

3.2.4.2 How to Modify a Parameter......................................................................................................... 3-7

3.2.4.3 Password Setup. ......................................................................................................................... 3-7

3.2.4.4 How to Access a Password Protected Menu .............................................................................. 3-8

3.2.5 Operator Convenience Functions (Display Menu)............................................................................ 3-9

3.2.5.1 Adjusting LCD Brightness, contrast and Background ................................................................. 3-9

3.2.5.2 Displaying Programmed Settings in RemoTe Mode ................................................................... 3-10

3.2.5.3 Enabling/Disabling Audible Beeps .............................................................................................. 3-11

3.2.5.4 Displaying Meters or Graph (Time line) ...................................................................................... 3-11

3.2.5.5 Waveform Stop ........................................................................................................................... 3-11

3.3 Local Mode Operation ............................................................................................................................ 3-11

3.3.1 Setting Local Mode ........................................................................................................................... 3-11

3.3.1.1 Keypad Lockout .......................................................................................................................... 3-11

3.3.1.2 Local Password Protection at Power-up ..................................................................................... 3-12

3.3.2 Setting Voltage or Current Mode ...................................................................................................... 3-12

3.3.3 Programming Voltage or Current and Associated Protect Limits...................................................... 3-12

3.3.3.1 Selecting Bipolar/Independent Protection Limits......................................................................... 3-14

3.3.3.2 Understanding Voltage and Current Protect Limits ..................................................................... 3-16

3.3.3.3 Hidden Voltage and Current Protect Limits................................................................................. 3-16

3.3.4 Changing Maximum or Minimum Software-controlled Limits ............................................................ 3-16

3.3.4.1 Changing Maximum Accepted Voltage or Current (Main Channel Software Limits)................... 3-17

3.3.4.2 Changing Maximum/Minimum Protection Software-controlled Limits ......................................... 3-18

3.3.4.3 External Limits............................................................................................................................. 3-19

3.3.5 Enabling/Disabling DC Output Power ............................................................................................... 3-19

3.3.6 Determining How the Unit responds when Output is OFF (Load Type)............................................ 3-20

3.3.7 Changing the Default Power up Settings .......................................................................................... 3-21

3.3.8 Storing/Recalling Power Supply Output Settings.............................................................................. 3-23

3.3.8.1 Understanding Abbreviations Used for Saved Settings .............................................................. 3-23

3.3.8.2 Viewing Saved Settings .............................................................................................................. 3-24

3.3.8.3 Saving Settings and Erasing or Modifying Previously Saved settings ........................................ 3-24

3.3.8.4 Copying Previously Saved settings to a New Location ............................................................... 3-25

3.3.8.5 Applying Saved settings to the Output (Recall)........................................................................... 3-26

3.3.9 Waveform Generation....................................................................................................................... 3-26

3.3.9.1 Protecting the Load When Accessing Waveforms ...................................................................... 3-26

3.3.9.2 Waveform Overview.................................................................................................................... 3-26

3.3.9.3 Understanding How Waveforms Are Generated ......................................................................... 3-27

3.3.9.4 Waveform Specifications............................................................................................................. 3-28

3.3.9.5 Viewing Stored Waveforms......................................................................................................... 3-29

3.3.9.6 Executing a Waveform................................................................................................................ 3-29

3.3.9.7 Modifying Previously Stored Waveforms .................................................................................... 3-30

3.3.9.8 Creating a New Waveform .......................................................................................................... 3-30

3.3.9.9 Using Segments to Build a Waveform ........................................................................................ 3-32

3.3.9.10 Copying a Waveform................................................................................................................... 3-34

3.3.10 Reset................................................................................................................................................. 3-35

3.3.11 Operator Testing............................................................................................................................... 3-35

3.3.12 Error Message Explanations............................................................................................................. 3-36

3.4 Analog Remote Mode Programming ...................................................................................................... 3-37

3.4.1 Remote Output off............................................................................................................................. 3-37

3.4.1.1 Remote Shutdown....................................................................................................................... 3-37

3.4.1.2 Remote Standby ......................................................................................................................... 3-38

3.4.2 Voltage/Current Mode Control .......................................................................................................... 3-39

3.4.3 Controlling the Output Using the BOP as a Power Amplifier ............................................................ 3-39

3.4.3.1 Fixed Gain using External Reference Control ............................................................................. 3-39

3.4.3.2 Variable Gain Using External Reference Level........................................................................... 3-41

3.4.4 External Protection Limits ................................................................................................................. 3-42

3.4.4.1 Using Both Local/Digital and External Protection Limits ............................................................. 3-42

ii BOP-1K 031912

TABLE OF CONTENTS

SECTION PAGE

3.4.5 Monitoring Output Current Using an analog signal............................................................................ 3-43

3.5 Digital Remote Mode Programming ........................................................................................................ 3-43

3.5.1 Operating Features Available only by Remote Commands............................................................... 3-43

3.5.1.1 Expanded Waveforms and Programs .......................................................................................... 3-43

3.5.2 Programming Techniques to Optimize performance ......................................................................... 3-43

3.5.2.1 Programming Voltage/Current Limit and Current/Voltage Limit................................................... 3-43

3.5.2.2 Making Sure the Previous Command is Complete ...................................................................... 3-44

3.5.3 Remote Mode Setup.......................................................................................................................... 3-45

3.5.3.1 GPIB Port Setup .......................................................................................................................... 3-46

3.5.3.1.1 Changing the GPIB Address ...................................................................................................3-46

3.5.3.1.2 Configure Device Clear (DCL) Control....................................................................................3-46

3.5.3.1.3 Determining Whether *RST Command sets the Output Off or On..........................................3-47

3.5.3.2 RS 232 Serial Port Setup............................................................................................................. 3-47

3.5.3.2.1 Select Baud Rate ....................................................................................................................3-47

3.5.3.2.2 Configure XON/XOFF Protocol...............................................................................................3-47

3.5.3.2.3 Configure Prompt Mode..........................................................................................................3-48

3.5.3.3 Establish communication language ............................................................................................. 3-48

3.5.3.4 BIT 4882 Compatibility................................................................................................................. 3-48

3.5.3.5 BIT 4886 Compatibility................................................................................................................. 3-48

3.5.3.5.1 LIST Command Differences in BIT 4886 ................................................................................3-48

3.5.3.5.2 Status Reporting Differences in BIT 4886...............................................................................3-49

3.5.3.5.3 Trigger Operation Differences in BIT 4886 .............................................................................3-49

3.5.4 IEEE 488 (GPIB) Bus Protocol .......................................................................................................... 3-49

3.5.5 BOP VISA Instrument driver.............................................................................................................. 3-50

3.5.6 RS232-C Operation ........................................................................................................................... 3-51

3.5.6.1 Serial INterface ............................................................................................................................ 3-51

3.5.6.2 RS 232 Implementation ............................................................................................................... 3-51

3.5.6.2.1 XON XOFF Method.................................................................................................................3-53

3.5.6.2.2 Echo Mode..............................................................................................................................3-53

3.5.6.2.3 Prompt Method........................................................................................................................3-53

3.5.6.3 Using SCPI commands for RS 232 Communication.................................................................... 3-53

3.5.6.4 Isolating RS 232 Communication Problems ................................................................................ 3-54

3.6 SCPI Programming ................................................................................................................................. 3-54

3.6.1 SCPI Messages................................................................................................................................. 3-54

3.6.2 Common Commands/Queries ........................................................................................................... 3-55

3.6.3 SCPI Subsystem Command/Query Structure.................................................................................... 3-55

3.6.3.1 ABORt Subsystem....................................................................................................................... 3-55

3.6.3.2 DISPlay Subsystem ..................................................................................................................... 3-55

3.6.3.3 INITiate Subsystem...................................................................................................................... 3-55

3.6.3.4 LIST Subsystem........................................................................................................................... 3-55

3.6.3.5 MEASure Subsystem................................................................................................................... 3-58

3.6.3.6 OUTPut Subsystem ..................................................................................................................... 3-58

3.6.3.7 MEMory Subsystem..................................................................................................................... 3-58

3.6.3.8 STATus Subsystem ..................................................................................................................... 3-58

3.6.3.9 TRIGger subsystem..................................................................................................................... 3-59

3.6.3.10 [SOURce:]VOLTage and [SOURce:]CURRent Subsystems ....................................................... 3-59

3.6.3.11 CALibrate Subsystem .................................................................................................................. 3-59

3.6.3.12 System Subsystem ...................................................................................................................... 3-59

3.6.3.12.1 Forgotten Passwords ..............................................................................................................3-59

3.6.4 Program Message Structure.............................................................................................................. 3-60

3.6.4.1 Keyword....................................................................................................................................... 3-60

3.6.4.2 Keyword Separator ...................................................................................................................... 3-61

3.6.4.3 Query Indicator ............................................................................................................................ 3-61

3.6.4.4 Data ............................................................................................................................................. 3-61

3.6.4.5 Data Separator............................................................................................................................. 3-61

BOP-1K 031912 iii

TABLE OF CONTENTS

SECTION PAGE

3.6.4.6 Message Unit Separator ............................................................................................................. 3-62

3.6.4.7 Root Specifier.............................................................................................................................. 3-62

3.6.4.8 Message Terminator ................................................................................................................... 3-62

3.6.5 Understanding The Command Structure .......................................................................................... 3-62

3.6.6 Program Message Syntax Summary ................................................................................................ 3-63

3.6.7 Status Reporting ............................................................................................................................... 3-63

3.6.7.1 Status Reporting Structure.......................................................................................................... 3-64

3.6.7.2 Operational Status Register........................................................................................................ 3-66

3.6.7.3 QUEStionable Status Register.................................................................................................... 3-67

3.6.8 SCPI Program Examples .................................................................................................................. 3-67

SECTION 4 - CALIBRATION

4.1 General ................................................................................................................................................... 4-1

4.2 Test Equipment Requirements ............................................................................................................... 4-2

4.3 Calibration using Remote SCPI commands via GPIB or RS 232 Interface ............................................ 4-4

4.3.1 Calibration Procedure using SCPI Commands................................................................................. 4-5

4.4 Calibration Using Front Panel Keypad in Local Mode ............................................................................ 4-10

4.4.1 Understanding the Calibration Process ............................................................................................ 4-10

4.4.2 Calibration Procedure using Local Mode .......................................................................................... 4-12

4.5 Calibration Storage ................................................................................................................................. 4-15

APPENDIX A - SCPI COMMON COMMAND/QUERY DEFINITIONS

A.2 *CLS — Clear Status Command ............................................................................................................ A-1

A.3 *ESE — Standard Event Status Enable Command................................................................................ A-1

A.4 *ESE? — Standard Event Status Enable Query..................................................................................... A-2

A.5 *ESR? — Event Status Register Query.................................................................................................. A-2

A.6 *IDN? — Identification Query.................................................................................................................. A-2

A.7 *OPC — Operation Complete Command ............................................................................................... A-2

A.8 *OPC? — Operation Complete Query.................................................................................................... A-3

A.9 *OPT? — Options Query ........................................................................................................................ A-4

A.10 *RCL — Recall Command...................................................................................................................... A-4

A.11 *RST — Reset Command....................................................................................................................... A-4

A.12 *SAV — Save Command........................................................................................................................ A-4

A.13 *SRE — Service Request Enable Command ......................................................................................... A-5

A.14 *SRE? — Service Request Enable Query .............................................................................................. A-5

A.15 *STB? — Status Byte Register Query .................................................................................................... A-5

A.16 *TRG — Trigger Command .................................................................................................................... A-5

A.17 *TST? — Self Test Query....................................................................................................................... A-6

A.18 *WAI — Wait-To-Continue Command .................................................................................................... A-6

APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS

B.1 Introduction............................................................................................................................................. B-1

B.2 Numerical Values.................................................................................................................................... B-2

B.3 ABOR

B.4 CAL Commands and Queries................................................................................................................. B-2

B.5 INIT
B.6 INIT
B.7 INIT
B.8 MEAS
B.9 MEAS

B.10 MEASure[:SCALar]:VOLTage[:DC]? Query .......................................................................................... B-4

B.11 MEAS
B.12 MEM

t Command................................................................................................................................... B-2

iate[:IMMediate] Command ............................................................................................................ B-3

iate:CONTinuous Command .......................................................................................................... B-4

iate:CONTinuous Query................................................................................................................. B-4

ure[:SCALar]:CURRent[:DC]? Query.......................................................................................... B-4

ure[:SCALar]:MODE[:DC] Command .......................................................................................... B-4

ure[:SCALar]:TRANsient[:DC]? QUERY..................................................................................... B-4

ory:UPDate Command .................................................................................................................. B-5

iv BOP-1K 031912

TABLE OF CONTENTS

SECTION PAGE

B.13 OUTPut[:STATe] Command................................................................................................................... B-6

B.14 OUTPut[:STATe] Query ......................................................................................................................... B-7

B.15 OUTPut:CONTrol Command................................................................................................................. B-7

B.16 OUTP

B.17 OUTPut:MODE Command..................................................................................................................... B-7

B.18 OUTPut:MODE? Query.......................................................................................................................... B-7

B.19 [SOUR

B.20 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude] Query ............................................................. B-7

B.21 [SOUR

B.22 [SOURce:]CURRent[:LEVel]:LIMit[:BOTH]? Query .............................................................................. B-8

B.23 [SOURce:]CURRent[:LEVel]:LIMit:NEG Command.............................................................................. B-9

B.24 [SOUR

B.25 [SOURce:]CURRent[:LEVel]:LIMit:POS Command.............................................................................. B-9

B.26 [SOURce:]CURRent[:LEVel]:LIMit:POS? Query................................................................................... B-9

B.27 [SOUR

B.28 [SOURce:]CURRent:MODe? Query...................................................................................................... B-10

B.29 [SOURce:]CURRent[:LEVel]:PROTect[:BOTH] Command................................................................... B-10

B.30 [SOUR

B.31 [SOURce:]CURRent[:LEVel]:PROTect:MODE Command .................................................................... B-10

B.32 [SOURce:]CURRent[:LEVel]:PROTect:MODE? Query ......................................................................... B-10

B.33 [SOUR

B.34 [SOURce:]CURRent[:LEVel]:PROTect:NeGative? Query.................................................................... B-11

B.35 [SOURce:]CURRent[:LEVel]:PROTect:POSitive Command ................................................................ B-11

B.36 [SOUR

B.37 [SOURce:]CURRent[:LEVel]:PROTect:LIMit[:BOTH] Command.......................................................... B-11

B.38 [SOURce:]CURRent[:LEVel]:PROTect:LIMit[:BOTH]? Query............................................................... B-11

B.39 [SOUR

B.40 [SOURce:]CURRent[:LEVel]:PROTect:LIMit:NeGative? Query........................................................... B-11

B.41 [SOURce:]CURRent[:LEVel]:PROTect:LIMit:POSitive Command ....................................................... B-12

B.42 [SOUR

B.43 [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude] Command ....................................................... B-12

B.44 [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude]? Query ............................................................ B-12

B.45 [SOUR

B.46 [SOURce:]FUNCtion:MODE? Query..................................................................................................... B-12

B.47 [SOURce:]FUNCtion:MODE:TRIGger Command................................................................................. B-12

B.48 [SOUR
B.49 [SOUR
B.50 [SOUR
B.51 [SOUR

B.52 [SOURce:]LIST:COUNt:SKIP Command............................................................................................... B-15

B.53 [SOURce:]LIST:COUNt:SKIP? Query.................................................................................................... B-15

B.54 [SOUR

B.55 [SOURce:]LIST:CURRent? Query......................................................................................................... B-15

B.56 [SOURce:]LIST:CURR:APPLy Command ............................................................................................. B-16

B.57 [SOUR

B.58 [SOURce:]LIST:CURRent:APPLy:SWEep? Query............................................................................... B-16

B.59 [SOUR
B.60 [SOUR

B.61 [SOURce:]LIST:DWELl? Query ............................................................................................................. B-17

B.62 [SOUR
B.63 [SOUR

B.64 [SOURce:]LIST:QUERy? Query ............................................................................................................ B-17

B.65 [SOUR

B.66 [SOURce:]LIST:RESolution? Query ..................................................................................................... B-17

B.67 [SOUR
B.68 [SOUR

B.69 [SOURce:]LIST:SAMPle? Query........................................................................................................... B-18

B.70 [SOUR

ut:CONT? Query .......................................................................................................................... B-7

ce:]CURRent[:LEVel][:IMMediate][:AMPlitude] Command ...................................................... B-7

ce:]CURRent[:LEVel]:LIMit[:BOTH] Command.......................................................................... B-8

ce:]CURRent[:LEVel]:LIMit:NEG? Query................................................................................... B-9

ce:]CURRent:MODE Command................................................................................................. B-9

ce:]CURRent[:LEVel]:PROTect[:BOTH] Query.......................................................................... B-10

ce:]CURRent[:LEVel]:PROTect:NeGative Command ............................................................... B-10

ce:]CURRent[:LEVel]:PROTect:POSitive? Query..................................................................... B-11

ce:]CURRent[:LEVel]:PROTect:LIMit:NeGative Command...................................................... B-11

ce:]CURRent[:LEVel]:PROTect:LIMit:POSitive? Query............................................................ B-12

ce:]FUNCtion:MODE Command ................................................................................................ B-12

ce:]FUNCtion:MODE:TRIGger? Query ..................................................................................... B-13

ce:]LIST:CLEar Command ......................................................................................................... B-13

ce:]LIST:COUNt Command........................................................................................................ B-14

ce:]LIST:COUNt? Query............................................................................................................. B-14

ce:]LIST:CURRent Command.................................................................................................... B-15

ce:]LIST:CURRent:APPLy:SWEep Command.......................................................................... B-16

ce:]LIST:CURRent:POINts? Query............................................................................................ B-16

ce:]LIST:DWELl Command ........................................................................................................ B-16

ce:]LIST:DWELl:POINts? Query ................................................................................................ B-17

ce:]LIST:QUERy Command ....................................................................................................... B-17

ce:]LIST:REPeat Command....................................................................................................... B-17

ce:]LIST:SAMPle:CURRent Command ..................................................................................... B-18

ce:]LIST:SAMPle:VOLTage Command...................................................................................... B-18

ce:]LIST:SET:SAMPle Command .............................................................................................. B-18

BOP-1K 031912 v

TABLE OF CONTENTS

SECTION PAGE

B.71 [SOURce:]LIST:SET:SAMPle? Query ................................................................................................... B-19

B.72 [SOURce:]LIST:SET:TRIGger Command.............................................................................................. B-19

B.73 [SOURce:]LIST:SET:TRIGger? QUERY ............................................................................................... B-19

B.74 [SOUR

B.75 [SOURce:]LIST:SET:WAIT? QUERY..................................................................................................... B-19

B.76 [SOURce:]LIST:TRIGger Command...................................................................................................... B-19

B.77 [SOUR

B.78 [SOURce:]LIST:VOLTage? Query ......................................................................................................... B-22

B.79 [SOUR

B.80 [SOURce:]LIST:VOLTage:APPLy:SWEep Command........................................................................... B-22

B.81 [SOURce:]LIST:VOLTage:APPLy:SWEep? Query ............................................................................... B-22

B.82 [SOUR

B.83 [SOURce:]LIST:WAIT:HIGH Command................................................................................................. B-23

B.84 [SOURce:]LIST:WAIT:LEDGe Command .............................................................................................. B-23

B.85 [SOUR

B.86 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude] Command ....................................................... B-25

B.87 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]? Query............................................................ B-25

B.88 [SOUR

B.89 [SOURce:]VOLTage[:LEVel]:LIMit[:BOTH]? Query ............................................................................... B-25

B.90 [SOURce:]VOLTage[:LEVel]:LIMit:NEGative Command ...................................................................... B-25

B.91 [SOUR

B.92 [SOURce:]VOLTage[:LEVel]:LIMit:positive Command ......................................................................... B-25

B.93 [SOURce:]VOLTage[:LEVel]:LIMit:positive? Query .............................................................................. B-26

B.94 [SOUR

B.95 [SOURce:]VOLTage:MODE? Query...................................................................................................... B-26

B.96 [SOURce:]VOLTage[:LEVel]:PROTect:BOTH Command ..................................................................... B-26

B.97 [SOUR

B.98 [SOURce:]VOLTage[:LEVel]:PROTect:MODE Command..................................................................... B-27

B.99 [SOURce:]VOLTage[:LEVel]:PROTect:MODE? Query ......................................................................... B-27

B.100 [SOUR

B.101 [SOURce:]VOLTage[:LEVel]:PROTect:NeGative? Query .................................................................... B-27

B.102 [SOURce:]VOLTage[:LEVel]:PROTect:POSitive Command................................................................. B-28

B.103 [SOUR

B.104 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:BOTH Command ............................................................ B-28

B.105 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit[:BOTH]? Query ............................................................... B-28

B.106 [SOUR
B.107 [SOUR
B.108 [SOUR
B.109 [SOUR

B.110 [SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPlitude] Command ........................................................ B-29

B.111 [SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPlitude]? Query ............................................................. B-29

B.112 STAT

B.113 STATus:OPERation:ENABle Command............................................................................................... B-29

B.114 STATus:OPERation:ENABle? Query.................................................................................................... B-29

B.115 STAT

B.116 STATus:PRESet Command................................................................................................................... B-30

B.117 STAT
B.118 STAT

B.119 STATus:QUEStionable:ENABle Command.......................................................................................... B-30

B.120 STAT
B.121 SYST

B.122 SYSTem:COMMunication:GPIB:ADDRess Command ........................................................................ B-32

B.123 SYST

B.124 SYSTem:COMMunication:SERial:BAUD Command ............................................................................ B-32

B.125 SYST
B.126 SYST

B.127 SYSTem:COMMunication:SERial:ECHO? Query .................................................................................. B-32

B.128 SYSTem:COMMunication:SERial:PACE Command .............................................................................. B-32

ce:]LIST:SET:WAIT Command................................................................................................... B-19

ce:]LIST:VOLTage Command .................................................................................................... B-22

ce:]LIST:VOLTage:APPLy Command ........................................................................................ B-22

ce:]LIST:VOLTage:POINts? Query ............................................................................................ B-23

ce:]LIST:WAIT:LOW Command.................................................................................................. B-24

ce:]VOLTage[:LEVel]:LIMit[:BOTH] Command .......................................................................... B-25

ce:]VOLTage[:LEVel]:LIMit:NEGative? Query........................................................................... B-25

ce:]VOLTage:MODe Command.................................................................................................. B-26

ce:]VOLTage[:LEVel]:PROTect[:BOTH]? Query ........................................................................ B-27

ce:]VOLTage[:LEVel]:PROTect:NeGative Command................................................................ B-27

ce:]VOLTage[:LEVel]:PROTect:POSitive? Query ..................................................................... B-28

ce:]VOLTage[:LEVel]:PROTect:LIMit:NeGative Command....................................................... B-28

ce:]VOLTage[:LEVel]:PROTect:LIMit:NeGative? Query ........................................................... B-28

ce:]VOLTage[:LEVel]:PROTect:LIMit:POSitive Command........................................................ B-28

ce:]VOLTage[:LEVel]:PROTect:LIMit:POSitive? Query ............................................................ B-29

us:OPERation:CONDition? Query............................................................................................... B-29

us:OPERation[:EVENt] Query...................................................................................................... B-30

us:QUEStionable[:EVENt]? Query............................................................................................... B-30

us:QUEStionable:CONDition? Query.......................................................................................... B-30

us:questionable:ENABle? Query ................................................................................................ B-31

em:BEEP Command ..................................................................................................................... B-31

em:COMMunication:GPIB:ADDRess? Query ............................................................................. B-32

em:COMMunication:SERial:BAUD? Query ................................................................................. B-32

em:COMMunication:SERial:ECHO Command............................................................................ B-32

vi BOP-1K 031912

TABLE OF CONTENTS

SECTION PAGE

B.129 SYSTem:COMMunication:SERial:PACE? Query................................................................................... B-32

B.130 SYSTem:COMMunication:SERial:PROMpt CommanD ......................................................................... B-33

B.131 SYSTem:COMMunication:SERial:PROMpt? Query............................................................................... B-33

B.132 SYST

B.133 SYSTem:ERRor:CODE? Query............................................................................................................. B-33

B.134 SYSTem:ERRor:CODE:ALL? Query ..................................................................................................... B-33

B.135 SYST

B.136 SYSTem:KEYBoard? Query.................................................................................................................. B-33

B.137 SYST

B.138 SYSTem:PASSword:CDISable Command ........................................................................................... B-33

B.139 SYSTem:PASSword:NEW Command................................................................................................... B-34

B.140 SYST

B.141 SYSTem:REMote Command ................................................................................................................. B-34

B.142 SYSTem:REMote? Query...................................................................................................................... B-34

B.143 SYST

B.144 SYSTem:SET Command ....................................................................................................................... B-35

B.145 SYSTem:SET? Query ............................................................................................................................ B-35

B.146 SYST

B.147 TRIGger:SOURce Command................................................................................................................ B-35

B.148 TRIGger:SOURce? Query..................................................................................................................... B-36

em:ERRor? Query ........................................................................................................................ B-33

em:KEYBoard Command............................................................................................................. B-33

em:PASSword:CENable Command ............................................................................................ B-33

em:PASSword:STATe? Query..................................................................................................... B-34

em:SECurity:IMMediate Command............................................................................................. B-34

em:VERSion? Query .................................................................................................................... B-35

BOP-1K 031912 vii

LIST OF FIGURES

FIGURE TITLE PAGE

1-1 High Power BOP Series Power Supply......................................................................................................... x

1-2 1000W BOP Power Supply, Outline Drawing............................................................................................. 1-12

1-3 BOP Output Characteristics ....................................................................................................................... 1-17

2-1 BOP Series Rear Panel.............................................................................................................................. 2-1

2-2 Load Connections, Local Sensing.............................................................................................................. 2-12

2-3 Load Connections, Remote Sensing.......................................................................................................... 2-12

2-4 Parallel Configuration, Local Sensing, Typical ........................................................................................... 2-15

2-5 Parallel Configuration, Remote Sensing, Typical ....................................................................................... 2-16

2-6 Series Configuration, Local Sensing, Typical............................................................................................. 2-17

2-7 Series Configuration, Remote Sensing, Typical......................................................................................... 2-18

2-8 Typical Master/Slave Protection Interconnections ..................................................................................... 2-19

2-9 Master Power Up Screen ........................................................................................................................... 2-21

2-10 Power On Default Screen for Master Unit .................................................................................................. 2-22

2-11 Power On Default Screen for Slave Unit .................................................................................................... 2-23

2-12 3 x 2 (3 Series X 2 Parallel) Configuration, Local Sensing, Typical ........................................................... 2-25

3-1 BOP Series Front Panel ............................................................................................................................. 3-1

3-2 Front Panel Keypad.................................................................................................................................... 3-2

3-3 Power-up Screen Showing Graphic Meters ............................................................................................... 3-4

3-4 Power-up Screen Showing Time Line Graph ............................................................................................. 3-4

3-5 Password Protection Menu, Factory Defaults ............................................................................................ 3-9

3-6 General Setup Menu .................................................................................................................................. 3-15

3-7 Max/Min Settings Menu.............................................................................................................................. 3-15

3-8 Saved Setups Menu................................................................................................................................... 3-25

3-9 Saved Waveforms Menu............................................................................................................................ 3-27

3-10 Waveform Settings Menu........................................................................................................................... 3-29

3-11 Sample Waveform...................................................................................................................................... 3-33

3-12 Remote Shutdown Using External Power, Standalone or Multiple units .................................................... 3-38

3-13 Remote Shutdown Using Internal Power, Standalone Units ...................................................................... 3-38

3-14 Remote Shutdown Using Internal Power, Multiple Units,........................................................................... 3-38

3-15 Remote Standby, Standalone or Multiple Units.......................................................................................... 3-39

3-16 Programming Example to Verify Previous Command has Completed ....................................................... 3-45

3-17 RS 232 Implementation.............................................................................................................................. 3-52

3-18 Tree Diagram of SCPI Commands Used with BOP Power Supply ............................................................ 3-56

3-19 Message Structure ..................................................................................................................................... 3-60

3-20 Status Reporting Structure......................................................................................................................... 3-64

3-21 Typical Example Of BOP Power Supply Program Using SCPI Commands............................................... 3-65

4-1 Calibration Setup for Voltage Mode ........................................................................................................... 4-5

4-2 Calibration Setup for Current Mode............................................................................................................ 4-8

4-3 Main Calibration Screen ............................................................................................................................. 4-11

A-1 GPIB Commands ....................................................................................................................................... A-3

B-1 Programming the Output............................................................................................................................ B-3

B-2 Using List Commands to measure sample at End of Pulse ....................................................................... B-5

B-3 Using List Commands to measure sample at Start of Pulse ...................................................................... B-6

B-4 Setting Limits.............................................................................................................................................. B-8

B-5 Using LIST Commands and Queries.......................................................................................................... B-13

B-6 Using List:WAIT Commands to Control Generation of a Waveform Measured by

Multiple External Devices using a Single External Pulse ........................................................................ B-20

B-7 Using List:WAIT Commands to allow an external device time to

function while imposing a maximum wait time......................................................................................... B-21

B-8 Using List:WAIT Commands to Control Generation of a Waveform Measured by

Multiple External Devices using the Low-Going leading Edge of an External Pulse ............................... B-24

B-9 Using PROT:LIM:POS and PROT:LIM:POS Commands to Set Asymmetrical Limits ............................... B-27

B-10 Using Status Commands and Queries ....................................................................................................... B-31

B-11 Setting the Unit to Remote Mode via Serial (RS 232) Port ........................................................................ B-34

B-12 Using System Commands and Queries ..................................................................................................... B-35

viii BOP-1K 031912

LIST OF TABLES

TABLE TITLE PAGE

1-1 BOP 1000 Watt Model Parameters .............................................................................................................1-1

1-2 BOP General Specifications .......................................................................................................................1-2

1-3 Equipment Supplied ....................................................................................................................................1-16

1-4 Safety Symbols ...........................................................................................................................................1-16

1-5 Accessories .................................................................................................................................................1-18

2-1 Rear Panel Connector Functions ................................................................................................................2-2

2-2 IEEE 1118 Connector Input/Output Pin Assignments .................................................................................2-2

2-3 Trigger Port Pin Assignments .....................................................................................................................2-3

2-4 External Protection Connector Input/Output Pin Assignments ....................................................................2-3

2-5 RS232C PORT Input/Output Pin Assignments ...........................................................................................2-4

2-6 Parallel/Serial Control Out Port Pin Assignments .......................................................................................2-4

2-7 Parallel/Serial Control In Port Pin Assignments ..........................................................................................2-4

2-8 Parallel/Serial Protect In Port Pin Assignments ..........................................................................................2-5

2-9 Parallel/Serial Protect Out Port Pin Assignments .......................................................................................2-5

2-10 Analog I/O Port Input/Output Pin Assignments ...........................................................................................2-6

2-11 IEEE 488 Port Input/Output Pin Assignments .............................................................................................2-7

2-12 Multiple Units Menu Functions ....................................................................................................................2-20

2-13 Slave Status Message Definitions ..............................................................................................................2-22

3-1 Front Panel Controls and Indicators ...........................................................................................................3-2

3-2 Special Key Functions ................................................................................................................................3-3

3-3 Display (Operator Convenience) Menu Functions ......................................................................................3-10

3-4 Voltage and Current Parameter Definitions ................................................................................................3-13

3-5 Max/Min Settings Menu ..............................................................................................................................3-17

3-6 Power Supply Behavior when Output is set to OFF ....................................................................................3-20

3-7 Examples Showing How Power-up Settings Function ................................................................................3-22

3-8 Save/recall menu ........................................................................................................................................3-23

3-9 Sine, Triangle and Ramp Waveform Frequency vs. Points ........................................................................3-28

3-10 Square Waveform Frequency vs. Points ....................................................................................................3-28

3-11 Waveform Segment Details Menu ..............................................................................................................3-31

3-12 New Waveform Settings Menu ...................................................................................................................3-32

3-13 Revisions/test Menu ....................................................................................................................................3-35

3-14 Error Message Explanations .......................................................................................................................3-36

3-15 Analog Remote Setup Menu .......................................................................................................................3-40

3-16 Interface Settings Menu ..............................................................................................................................3-46

3-17 Operation of #RST Command ....................................................................................................................3-47

3-18 IEEE 488 (GPIB) Bus Interface Functions ..................................................................................................3-49

3-19 IEEE 488 (GPIB) Bus Command Mode Messages .....................................................................................3-50

3-20 IEEE 488 (GPIB) Bus Data Mode Messages ..............................................................................................3-50

3-21 Rules Governing Shortform Keywords ........................................................................................................3-61

4-1 Calibration Summary ..................................................................................................................................4-1

4-2 Suggested Sense Resistors ........................................................................................................................4-3

4-3 Voltage Calibration Measurements and Tolerances ...................................................................................4-3

4-4 Current Calibration Measurements and Tolerances ...................................................................................4-4

4-5 Calibration Storage .....................................................................................................................................4-16

A-1 IEEE 488.2 Command/query Index ........................................................................................................... A-1

A-2 Standard Event Status Enable Register and Standard Event Status Register Bits ................................... A-1

A-3 Service Request Enable and Status Byte Register Bits ............................................................................. A-5

A-4 Built-in test Error Codes ............................................................................................................................. A-6

B-1 SCPI Subsystem Command/query Index .................................................................................................. B-1

B-2 List Data Table ...........................................................................................................................................B-15

B-3 Operation Condition Register, Operation Enable Register,

and Operation Event Register Bits .......................................................................................................... B-29

B-4 Questionable Event Register, Questionable Condition Register

and Questionable Condition Enable Register Bits ..................................................................................B-30

B-5 Error Messages ..........................................................................................................................................B-36

BOP-1K 031912 ix

FIGURE 1-1. HIGH POWER BOP SERIES POWER SUPPLY

x BOP-1K 031912

1.1 SCOPE OF MANUAL

This manual contains instructions for the installation, operation and servicing of the BOP series
of 1000 Watt rack-mounted, 4-quadrant bipolar, programmable, voltage and current stabilized d­c power supplies manufactured by Kepco, Inc., Flushing, New York, U.S.A.

NOTE:This manual does not apply to units with Firmware Rev less than 2.0.

1.2 GENERAL DESCRIPTION

The BOP Series (Figure 1-1), hereafter referred to as BOP, are true 4-quadrant programmable
voltage and current power supplies, meaning they are capable of both sourcing and sinking
power. These bipolar power supplies pass smoothly through zero without switching to provide
true ± voltage and ± current. These BOP power supplies use switch mode technology for low
dissipation. A bi-directional, isolating, a-c input power factor correcting (PFC) circuit recuperates
energy sinked from an active load and sends it back into the line to maintain low dissipation.

These BOP power supplies are controlled digitally from a menu-driven front-panel keypad or
one of the standard remote digital interfaces (GPIB or RS 232) to set voltage and current and
the four protection limits (+voltage, –voltage, +current and –current.) A front panel rotary
adjuster allows real-time adjustment of the output. A large LCD displays the settings, mode and
the actual output voltage and current. Additionally, these BOP models can be remotely con­trolled by an analog ±10V input for the main channel (voltage or current), and a +1 to +10V input
for the limit channels.

SECTION 1 - INTRODUCTION

BOP models are suitable for driving inductive loads such as large magnets or motors, and for
exercising batteries. They are also suitable for characterizing solar cell arrays, and powering
many electrochemical reactions.

1.3 SPECIFICATIONS

Table 1-1 below indicates parameters that vary for different 1000 Watt BOP models; Table 1-2
lists general specifications that apply to all 1000 Watt BOP models.

TABLE 1-1. BOP 1000 WATT MODEL PARAMETERS

d-c Output Range Closed Loop Gain Output Impedance

Model

1000 WATT MODELS

BOP 6-125MG 0 to ±6 0 to ±125 0.6 12.5 0.05 1.5 24 1150

BOP 10-75MG 0 to ±10 0 to ±75 1.0 7.5 0.13 2.0 67 976

BOP 20-50MG 0 to ±20 0 to ±50 2.0 5.0 0.40 8.3 200 371

BOP 25-40MG 0 to ±25 0 to ±40 2.5 4.0 0.63 15.8 313 165

BOP 36-28MG 0 to ±36 0 to ±28 3.6 2.8 1.30 25 640 103

BOP 50-20MG 0 to ±50 0 to ±20 5.0 2.0 2.50 50 1250 55

BOP 72-14MG 0 to ±72 0 to ±14 7.2 1.4 5.14 104 2570 33

BOP 100-10MG 0 to ±100 0 to ±10 10.0 1.0 10.0 163 5000 16

NOTE: When connecting active loads, the steady-state voltage of the active load must not exceed the maximum voltage rating of the

BOP. Otherwise the overvoltage protection will shut down the power supply.

Vol tag e

(V d-c)

Current

(A d-c)

Voltage

Channel

(V/V)

G

V

Current

Channel

(A/V)

G

I

Voltage Mode

(Series R - L)

R

d-c

(mOhms)

L

(µH)

Current Mode

(Parallel R - C)

R

d-c

(Ohms)

C

(µF)

BOP HIPWR 031912 1-1

TABLE 1-2. BOP GENERAL SPECIFICATIONS

SPECIFICATION RATING/DESCRIPTION CONDITION

INPUT CHARACTERISTICS

a-c voltage nominal 230 Va-c

range 176 - 264 Va-c

Frequency nominal 50/60 Hz

range 47 - 63 Hz

Current 176 Va-c 9.5A (7.5A)* maximum

264 Va-c 6.4A (4.4A)* maximum

Power factor

Efficiency 65% (56%)* minimum when sourcing

Switching frequency 70 KHz ±5% (50KHz ±5%)*

EMC Compliance EN61326-1 (1997) Class A equipment

EMC immunity to: ESD EN61000-4-2 Electrostatic discharge

EMC emissions Conducted EN61000-3-2 harmonics

Leakage current 3.5 mA 230V a-c, 47-63 Hz

Insulation coordination Input Installation Category II For TN or TT power system

Pollution degree 2

Source 0.99 minimum

Sink 0.97 minimum

Radiated RF EN61000-4-3

EFT EN61000-4-4 Electrical fast transient/burst

Surges EN61000-4-5

Conducted RF EN61000-4-6

EN61000-3-3 fluctuation & flicker

Conducted EN55011/CISPR11 0.15 to 30 MHz

Radiated EN55011/CISPR11 30 to 1000 MHz

Overvoltage Category II

Output Installation Category II Maximum 300V common mode voltage

Overvoltage Category II

Single phase, or between two phases of a 3­phase system

nominal output power

Active PFC Input for both Source and Recu­peration (Sink)

between output terminals and chassis ground.

OUTPUT CHARACTERISTICS **

Type of stabilizer Voltage-current, 4-quadrant Switch mode

Switching frequency 100KHz ±5% Output Stage

Source adjustment
range

Sink adjustment range voltage -100% to +100% of rating 0 to 50°C, recuperated energy is sent

* BOP 6-125MG and BOP 10-75MG only.
** Output characteristics are for a single standalone unit. Output characteristics of identical multiple unit parallel/series configurations

are described in the Technical Manual associated with the applicable Cable Kit (see Table 1-5).

voltage -100% to +100% of rating 0 to 50 deg C

current -100% to +100% of rating

current -100% to +100% of rating

back into line for general reuse

1-2 BOP HIPWR 031912

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

OUTPUT CHARACTERISTICS (Continued)

Digital Programming
resolution / accuracy

Digital Readback
resolution / accuracy

Analog Programming
accuracy

Analog Readback
accuracy

Digital Readback
Characteristics

Voltage stabilization in
voltage mode

Current stabilization in
current mode

Error sensing 0.25V or 1% of voltage rating per

Transient recovery in
voltage mode

Output Common Mode Voltage 300V Output to chassis ground

Series operation

Parallel operation Master/slave Maximum of 5 identical units

Series-parallel Operation

1. Remote error sensing applies to the main voltage channel. Feedback for the ±voltage limit channels is supplied locally
from the power terminals. Consult factory for a remote sensing solution applicable to the voltage limit channels.

measurement rate 5 ms

measurement array 64 samples voltage and current

step change timing 40

time effect (drift) 0.02% of rating 0.5 through 8 hours

temperature effect 0.02%/deg C of rating 0 to 50 deg C

ripple and noise (2% EOmax) p-p/(0.2% EOmax) rms Includes switching noise

time effect (drift) 0.02% of rating 0.5 through 8 hours

temperature effect 0.02%/deg C of rating 0 to 50 deg C

ripple and noise 2% IOmax p-p / (0.2% IOmax) rms Includes switching noise

maximum excursion 5% of nominal output nominal voltage, 50% load step

Voltage 14 bits / 0.03% 3% accuracy for Ext Ref Level (see PAR.

Current

Voltage Limit 12 bits / 0.3%

Current Limit 12 bits / 0.5%

Voltage 16 bits / 0.05% main or limit channel

Current 16 bits / 0.1% main or limit channel

Sustain Output

update rate

Voltage 0.1% of rating

Current 0.1% of rating

Voltage Limit 0.3% of rating 10% to 100% of nominal range, converted to

Current Limit 0.5% of rating

Voltage

Current 0.1% of rating 0 to ±10V for 0 to ±nominal output voltage.

14 bits / 0.1%

400 updates/Sec voltage or current

-

3.4.3.2). Unit gain adjustable between 0 and
E

(voltage) or I

NOM

O

digital at 100mS rate.

Available on request: 0 to ±10V for 0 to ±nom­inal output voltage.

O

NOM

(current).

µS (default) Allows rejection of line-related ripple/noise by

changing response time for output step
change (see PAR. B.9).

source effect 0.05% of rating min-max input voltage

load effect 0.1% of rating 0-100% load current

source effect 0.05% of rating min-max input voltage

load effect 0.2% of rating 0-100% load voltage

1

wire (whichever is less)

Recovery time 200

Master/slave Maximum of identical 3 units,

2 series x 2 parallel
3 series x 2 parallel

Above rated output

µS Return within 0.1% of set voltage

up to 300V max.

Master/slave for both series and parallel
branches of identical units

BOP HIPWR 031912 1-3

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

OUTPUT CHARACTERISTICS (Continued)

Analog Voltage and current limited in four quadrants, adjustable between 10% and 101%of

E

or I

NOM

Output Protection
limiting

Output Stage Protection

Input Stage Protection (PFC)

Small signal
Bandwidth

Rise/Fall time

O

rate.

Digital Voltage and current limited in four quadrants, adjustable between ±Internal minimum

E

O

Output overvoltage/overcurrent

Internal overvoltage, undervoltage,

overtemperature, fan inoperative

Input circuit breaker overcurrent Trips circuit breaker to shut off unit

voltage channel

current channel 800 Hz minimum

voltage channel

current channel

(BOP 6-125MG: 600 Hz minimum)

O

or I

MIN

MIN

O

Heatsink overtemperature,

switchers overcurrent

overcurrent, heat sink

2 KHz minimum Into nominal resistive load 10% of rating

PROGRAMMING/DISPLAY CHARACTERISTICS

Analog I/O Port
(See Table 2-10)

Main channel

(voltage or current)

Protection Limit

channels:

(±Voltage, ±Current)

Mode Control Voltage: open circuit or TTL logic 1

Current: short circuit or TTL logic 0

–10V to +10V Full range output, 20K Ohm input impedance

. The analog limits are converted to digital limits at 100mS update

NOM

(box) (see Figure 1-3) and ±1.01 E

Triggers latched shutdown protection of the
output module and PFC stage. Recover by
cycling power off, then on or by pressing
RESET at the front panel.

Into short circuit, 10% of rating

250/200

+1V to +10V 10% to 100% of Nominal Range. Input voltage

µS

0.7/1.2 mS

Into nominal resistive load, measured from 10
to 90%, from 0 to ±100% of rating

Into short circuit, measured from 10 to 90%,
from 0 to ±100% of rating

(see PAR. 3.4)

clamped to 12V through 1K ohms. Maximum
of 0.15mA input current at1V input voltage.

Available only when digitally activated through
Power-up setting.

O

NOM

or I

O

NOM

.

External Protection Port
(see Table 2-4)

Output Current

Analog Readback

External Shutdown Isolated input for shutdown of the

External Shutdown

External On-Off

Flag or External

Trigger

0 to ±10 Volts corresponds to zero to

± Full Scale nominal output current

BOP (latched status)

Isolated output indicating

Flag

output on (enabled, STANDBY off) or

off (disabled, STANDBY on) status)

shutdown status)

Flag: Isolated output indicating

Trigger: Isolated trigger output for

external devices.

Output impedance of this signal is 2K Ohms.

Pulse width: 100
Action delay: 100
Restore operation by cycling input power or
pressing RESET key.

Action delay: 100

Flag:
LIST:SET:TRIG enables trigger function.
Flag action delay: 200 mS max

Trigger:
LIST:CLE disables trigger and restores flag.
Trigger output pulse duration:
settable between 0.25 to 34mS
Trigger output action delay: 100
Trigger output active level: settable to either
“0” or “1.”

µS min.

µS max

µS max

µS max.

1-4 BOP HIPWR 031912

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

PROGRAMMING/DISPLAY CHARACTERISTICS (Continued)

Trigger Port (See Table 2-3)

Shutdown (pin 2) : Operation of pin 2 is controlled by OUTP:CONT command (see Par. B.15).

STANDBY (default) External Trigger Shutdown (Isolated

External Trigger

Input (pin 4)

Digital control local Panel-mounted keypad Direct Entry

remote IEEE 488-2 (GPIB)

remote RS 232

remote RS 485 (BITBUS) Used for series and parallel configurations.

Display front panel 4" backlit LCD displays all functions

remote All parameters read back on GPIB or RS 232 buses

Settings are STANDBY (default), HIGH, LOW, OFF. Either OFF or STANDBY is
required if using OUTP ON and OUTP OFF commands to control the output.

input. Logic 0 or short-circuit causes
the output to go to STANDBY (off,
disabled) (latched status)

HIGH Isolated Input for controlling output

status, on or off. High or open (not
connected), output is on (enabled).
When 0 volts or short circuit applied
to the pin, output is off (disabled)

LOW Isolated Input for controlling output

status, on or off. Logic 0 = output is
on (enabled); Logic 1 or open (not
connected) = output is off (disabled).

OFF Trigger port disabled. Inputs applied

to pin 2 have no effect.

Isolated input for trigger events Pulse width: 100

Pulse width: 100
Action delay: 200 mS max
Restore operation by pressing STANDBY key.
or sending OUTP ON command via remote
interface.

Pulse width: 6 mS min for any guaranteed
unit response.
Action delay: 200 mS max

Pulse width: 6 mS min for any guaranteed
unit response.
Action delay: 200 mS max

Action delay: 500

SCPI

µS min.

µS min.

µS max

FUNCTION GENERATOR CHARACTERISTICS (See PAR. 3.3.9)

Maximum number of waveforms Local: 16

Maximum number of segments or basic wave­forms per waveform

Remote: 1

Local: 10

Remote: 126

Local: Saved for power-up
Remote: Lost when the unit is turned off, must
be saved on the host computer)

Or maximum number of points (whichever
comes first)

• The time interval for each segment
depends on the type of waveform: period
for ramp and square waveforms, period or
fraction of period for sine and triangular
waveforms and time interval for DC levels

• Segments that cause the waveform to
exceed the maximum number of points are
not executed. For local operation they are
marked with a triple asterisk on the front
panel. For remote operation an error mes­sage is generated.

BOP HIPWR 031912 1-5

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

FUNCTION GENERATOR CHARACTERISTICS (Continued)

Types of Basic waveforms Sine (Sinusoidal waveform)

Triangle (Triangular waveform)

Pos. Ramp (Ramp waveform)

Neg. Ramp (Sawtooth waveform)

Square (50% Duty Cycle Pulse)

Level (DC waveform)

Maximum number of points per basic wave­form

Count (Number of repetitions) Range: 1 to 255

Waveform Name 10 characters maximum

Waveform Parameters Type: Voltage or Current

Basic waveform parameters Sine: Frequency (Hz), Amplitude (Vp-p or Ap-p), Offset (Vd-c or Ad-c),

Local: 3933

• Local: Factory default: when the count is

For Count = 0 the waveform is exe-

cuted indefinitely until stop com-

mand is sent

Positive Protection Limit:

(Vd-c or Ad-c)

Negative Protection Limit:

(Vd-c or Ad-c)

Count: number

Initial/Repeating

Start Phase (°), Stop Phase (°).

Triangular: Frequency (Hz), Amplitude (Vp-p or Ap-p), Offset (Vd-c or Ad-c), Start

Phase (°), Stop Phase (°).

Ramp (Pos. or Neg.): Frequency (Hz), Amplitude (Vp-p or Ap-p),

Offset (Vd-c or Ad-c).

Square: Frequency (Hz), Amplitude (Vp-p or Ap-p), Offset (Vd-c or Ad-c).
Level: Timing (Sec), Amplitude (Vd-c or Ad-c).

• Local: the Start/Stop phases, available for sine and triangle only, can be set or
edited by modifying the existing segment (see PAR. 3.3.9.7).

• Remote: the start/stop phases are global parameters, applicable to all sine/ trian­gular waveform segments.

• The Start/Stop points are independent and can have any value between 0° and
360°.

complete or if execution is stopped using

%, the output of the unit is set to OFF

(Standby indicator lit). Output must be
enabled (press STANDBY) to execute the
waveform again. (See Table 3-3, WAVE­FORM STOP for additional settings.)

• Remote: When the count is complete or
the waveform is stopped using the
VOLT:MODE FIX command, the output
remains at last output value.

• Type of waveform, voltage or current, can
be selected only for a new waveform and
consequently applies to all waveform seg­ments. Changing the type for an existing
waveform is not possible, unless the wave­form is erased first.

• The Limit values (positive/negative) and
the count number apply to all waveform
segments and can be edited at the begin­ning of a new waveform or later when mod­ifying a waveform (see PAR. 3.3.9.7).

• All segments except the last may be set to
run once (Initial) or per the Count setting
(Repeating).

1-6 BOP HIPWR 031912

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

FUNCTION GENERATOR CHARACTERISTICS (Continued)

LIST command characteristics for “string” type
waveform (Remote only)

Waveform graphics displayed on LCD for both
Local and Remote operation

Frequency: Not applicable to Level

Range (Hz) 0.001 to 443 Sine, Triangle

Programming Resolution (Hz) 0.001 Sine, Triangle

Accuracy 1.5% of Frequency Sine, Triangle, Square, ±Ramp

Period (applicable to Level only)

Range (Seconds): 0.0005 TO 1.9999 (local front panel) 0.0005 to 5.0000 (remote interface)

Resolution: 0.0001

Accuracy: 1.5% of Time Duration

Maximum number of points

• For single (global) dwell time:
5900 (high resolution)

• For <122 different dwell times:
3933

• For >126 different dwell times:
2950

Dwell time range: 93

Dwell time resolution (increment):

µS

0.751

Skip feature (a number of steps can
be skipped from the LIST at the first
run using LIST:COUN:SKIP.)

Able to synchronize a LIST command
with multiple BOP’s or other devices
using Trigger Port (see Table 2-4
NOTE).

Able to sample output voltage or cur­rent during LIST command execu­tion (see Figures B-2 and B-3).

Local: The LCD represents the programming waveform graph of the main channel,
voltage for voltage mode or current for current mode.

• There is no difference between programming and real output waveform, as long as

programmed Limits are not exceeded and the load is resistive. The programming
waveform representation does not taking into account the interaction between set­tings and load.

• The graph timing is automatically selected for the best waveform representation.

• Because the BOP unit is not an oscilloscope, the waveform representation is

sometimes very sketchy, especially if there is a large difference between the timing
of two adjacent segments or for a reduced number of repetitions of high frequency
waveform. Also, synchronization is difficult for low frequency waveforms.

Remote: When using LIST commands for waveform creation/ execution, the LCD dis­plays the actual or real waveform graphs of the main and limit channel, voltage & cur­rent protection limit for voltage mode and current & voltage protection limit for current
mode. Main and Limit graphs are not phase correlated.

• In order to get a meaningful representation, the graph timing must be chosen prop-

erly. It is recommended that the first value higher than total waveform time be cho­sen from the 12 time selections, spread from 0.04 Second to 75 Seconds.

µS to 34mS.

0.02 to 532 ±Ramp

0.02 to 1000 Square

0.01 Ramp, Square

Note: Dwell time list must match (balance) the
amplitude list.

BOP HIPWR 031912 1-7

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

FUNCTION GENERATOR CHARACTERISTICS (Continued)

Amplitude Range

Main Channel Voltage (Volts p-p) 0 to 2 x E

Current (Amperes

p-p)

Protection Limit Channel . Current, bipolar

(Amperes)

Voltage, bipolar

0 to 2 x I

0 to I

0 to E

(Volts)

Offset Voltage (Volts)

–E

NOM

O

Current (Amperes) –I

O

NOM

Amplitude Resolution (Programming)

Main Channel

and Offset

Voltage

(millivolts a-c)

(millivolts d-c) 1 Triangle, Square, ±Ramp, Level:

Current

(milliamperes a-c)

(milliamperes d-c) 1 Triangle, Square, ±Ramp, Level:

Protection Limit

Channel .

Current, bipolar

(Amperes)

Voltage, bipolar

(Volts)

Amplitude Accuracy

Main Channel

Voltage 0.03% E

and Offset

Current 0.1% I

Protection Limit.

Channel.

Current 0.5% I

Voltage 0.3% E

Distortion (THD-F, Total Harmonic Distortion
relative to the fundamental component)

13% max. Triangle

70% max. ±Ramp

47% max. Square

Start/Stop Angle

Range

(Phase)

Programming Resolution 0.01°

Accuracy Start Angle 1°

Stop Angle 1° @ 0.01Hz, to 16° @ 443 Hz Frequency dependent

NOM

O

NOM

O

NOM

O

NOM

O

to +E

NOM

O

to +I

NOM

O

.35 Sine

.35 Sine

0.1

0.1

NOM

O

NOM

O

NOM

O

NOM

O

5% max. Sine

0 to 360°

Sine, Triangle, Square, ±Ramp

Sine, Triangle, Square, ±Ramp

(set once for all segments)

Applies to offset of sine, triangle, ±ramp, and
square waveforms and to Level waveform
Amplitude.

Sine, Triangle

1-8 BOP HIPWR 031912

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

SAVE/RECALL CHARACTERISTICS

(See PAR. 3.3.8)

Number of Locations 99

Parameters Saved or Recalled All parameters saved for power-up.

Mode of operation Voltage, Current or External For External the operating mode is deter-

mined by signal at I/O Port; no signal selects
voltage mode (see PAR. 3.4.2).

Reference type Internal, External or

Main channel

External Reference Level

Internal, External or

Limit channel

Lesser Limit

Main Amplitude

(Internal)

O

NOM

or I

0 to E

(internal or external)

O

NOM

Main Channel:
Voltage (Volts) for Voltage mode,
Current (Amperes) for Current mode

Protection Limit Amplitude

(Internal)

E

O

1.01 E

MIN

O

or I

NOM

O

or I

MIN

O

to

NOM

Limit Channel, Positive and Negative
Voltage (Volts) for Current mode,
Current (Amperes) for Voltage mode

Output status ON or OFF

MISCELLANEOUS FEATURES

Maximum/Minimum Settings

Protection Limit

Type

Main Channel 0 to E

Protection Limit Channel

(maximum value, Internal)

Load Type Settings

Self-test capabilities

Interface Settings Data Format SCPI (default), CIIL

GPIB Address 0 to 30 (6 = default)

Output Status @ Reset ON or OFF (OFF = default)

Serial Baud Rate Off, 9600, 19200 (Off = default)

Device Clear SCPI (default) or MATE

XON/XOFF Enable (default) or Disable

Prompt Disable (default), Enable,

Calibration Assisted by front-panel prompts

Bipolar (default) or Independent

1.01 E

O

E

O

NOM

MIN

O

NOM

or I

or I

(default) Software limit to setting of main channel

NOM

O

or I

to

MIN

O

(internal)

NOM

O

Active (default), Resistive,

Battery, Custom

Display, Keypad, Interface, Serial

Interface, Analog, Output

Enable with Echo

Voltage (Volts) for Voltage mode,
Current (Amperes) for Current mode

Software limit to setting of protection limit
channel.
Voltage (Volts) for Current mode
Current (Amperes) for Voltage mode

Consult factory for custom setting.

Serial Interface test requires Loop Back Test
connector (p/o KIT 219-0436, see Table 1-5).

BOP HIPWR 031912 1-9

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

MISCELLANEOUS FEATURES (Continued)

Power-up Settings Mode Voltage (default) or Current

Main Channel

Reference Type

Protection Limit Channel

Reference type

Protection Limit

(Internal)

Output status On (default) or Off

Password

Protection Choices Unprotected, Main, Admin1, Admin2 Password menu always protected by Admin2

Items Protected Interface, max/min , Load type, Test,

Series, Parallel, Series x Parallel configura­tions of identical units

Internal (default), External or External

Reference Level (Gain Mode)

Internal (default), External

or Lesser Limit

E

or I

MIN

Levels

Types

Calibration, Power-up, Keypad @

local, Keypad lockout at power-up,

Single, Parallel, Series, 2 X 2, 3 X 2 2 X 2 is two parallel branches of two series-

O

1.01 E

NOM

O

Main, Admin1, Admin2

Save Display Chg

(See Figure 3-5 for defaults)

O

or I

MIN

O

to

NOM

Applies to Limit channel

Voltage (Volts) for Current mode,
Current (Amperes) for Voltage mode

Factory defaults: Main: DEFAULT,
Admin1: none assigned, Admin2: KEPCO

Multiple unit configurations are protected by
Admin2 password.

Save Display Chg choice is Enable or Dis­able; when set to Disable, prevents changes
made to the display settings from being saved
for power up.

connected identical units.
3 X 2 is two parallel branches of three series­connected identical units.

GENERAL (ENVIRONMENTAL) CHARACTERISTICS

Temperature operating 0 to +50 deg C Full rated load

storage -20 to +85 deg C

Cooling Two internal fans exhaust to the rear

Humidity 0 to 95% RH non-condensing

Shock 20g. 11mS ±50% half sine non-operating

Vibration 5-10HZ: 10mm double amplitude 3 axes, non-operating

10-55HZ: 2g 3 axes, non-operating

Altitude sea level to 10,000 feet

Safety Certification a-c power UL 3101-1 and EN 6101-1 Pending

1-10 BOP HIPWR 031912

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

PHYSICAL CHARACTERISTICS

Dimensions English 5.25' X 19" X 21.5" H X W X D

metric 133.3mm X 482.6mm X 546.1mm H X W X D

Weight, 1000W models English 53 lbs

metric 24.1Kg

Connections Source power 3-pin IEC connector

Load connections Nickel-plated copper bus bars

Sensing Output

Terminal Block

Analog I/O control

port

PAR/SER CTRL IN

port

PAR/SER CTRL OUT

port

PAR/SER PROT IN

port

PAR/SER PROT OUT

port

EXT PROT port 6-pin phone jack See Table 2-4

Primary digital port 24-pin GPIB connector IEEE 488 port - See Table 2-11

Secondary digital

ports

External Trigger 4-pin stereo audio phone jack See Table 2-3

7-pin terminal block Default: 3 links installed for local sensing and

ground network connected.

15-pin D female See Figure 2-1, Table 2-10

8-pin mini DIN connector See Figure 2-1, Table 2-7

4-pin mini DIN connector See Figure 2-1, Table 2-6

8-pin phone jack See Figure 2-1, Table 2-8

8-pin phone jack See Figure 2-1, Table 2-9

6-pin phone jack RS 232 port - See Table 2-5

5-pin mini DIN female connector IEEE 1118 port - See Table 2-2

BOP HIPWR 031912 1-11

18.805 [477.63]

18.018 [457.64]

17.675 [448.93]

16.835 [427.60]

]

]

]

1

0

4

]

]

]

9

2

3

7

1

7

.

.

.

8

6

7

5

0

4

5

6

5

[

[

[

0

3

4

0

6

6

0

8

5

.

.

.

2

3

1

2

2

2

]
5
1

.
4
4

[
8

3
7

.
1

1

0

5

.

.

.

9

8

4

7

0

4

5

5

5

[

[

[

0

0

9

0

0

3

8

0

4

.

.

.

2

0

1

2

2

2

OBROUND 0.25x0.453 (4 LOC.)

]
4
5

.
2
3
1

[
8

1
2

.
5

]
4
3

.
7
3

[
0

7
4

.
1

18.235 [463.16]

18.985 [482.21]

]
7
2

.
6
5

[
5

1
2

.
2

FIGURE 1-2. 1000W BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 1 OF 2)

1-12 BOP HIPWR 031912

REMOVE FEET FOR
RACK MOUNTING.

REAR VIEW

SEE NOTE 6.

FIGURE 1-2. BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 2 OF 2)

BOP HIPWR 031912 1-13

22.000 [558.79]

SLIDES TRAVEL DISTANCE: 23.000 [584.2]

1.4 LOCAL CONTROL

Either the front panel keypad or the adjust control can set and adjust output voltage and current
under local control. The display provides a digital display of output voltage and current as well
as a pictorial display of real-time analog voltage and current meters.

The keypad includes five function keys which provide access to the menu-driven functions of
the unit. The menu screens provide access to save the unit’s settings, recall previously saved
settings, configure or execute a waveform, display references or configure the unit by setting
GPIB address, Serial protocols, maximum acceptable voltage and current, etc. (see PAR. 3.3
for details on local control).

Context-sensitive help screens are available by pressing the HELP key. Actual output voltage
and current displays are available while the help screens are displayed.

1.5 REMOTE CONTROL

The BOP Power Supply can be remotely controlled directly via either the IEEE 488.2 (GPIB)
bus (see PARs. 3.5 and 3.5.4) or RS232C (see PAR.3.5.6) interface using SCPI commands
(see and Appendix A and B). Most features available in local mode can also be accessed
remotely via the digital interface. The unit can be controlled with a VISA (Virtual Instrumentation
Software Architecture) driver to facilitate remote programming of the BOP Power Supply (see
PAR. 3.5.5). The VISA driver is an interface written in standard C language which adds the
proper SCPI syntax to commands sent to the BOP.

Programmed settings for main and protection channels are not displayed on the front panel
when in remote mode; these settings can be displayed if needed by setting Remote Debug to
ON (see PAR 3.2.5.2), however this slows power supply response.

The BITBUS is used to allow communication between identical BOP units that are connected in
series and/or parallel to expand the voltage or current range (see PAR. 2.8).

The BOP can also be controlled remotely using analog signal applied to the Analog I/O Port
(see PAR. 3.4 for details.)

1.6 FEATURES

1.6.1 DIGITAL CALIBRATION

The BOP Power Supply contains no internal adjustments. Calibration is done entirely via the
keypad (or remotely via the GPIB or RS 232 interface) using digital entries and a calibrated
DVM, a precision d-c reference voltage source and precision shunt resistor. Calibration instruc­tions appear on the front panel after a password is entered; previous calibration values are
saved and can be restored using the remote interface if desired. The original factory calibration
values can also be restored using the remote interface. (Refer to Section 4.)

1.6.2 VOLTAGE/CURRENT PROTECTION

Positive and negative voltage and current protection values can be individually programmed.
Refer to PAR. 3.3.3.

1.6.3 WAVEFORMS

The BOP models have the capability to make the output follow complex waveforms. These may
be generated either externally, using an analog reference voltage (see PAR. 1.6.6), or internally,
using user-generated waveforms.

1-14 BOP HIPWR 031912

Up to 16 user-generated waveforms can be stored for later use. The user selects the operating
mode, positive and negative protection levels, and a count (the number of times the waveform is
to be repeated). Each waveform consists of up to 10 segments; each segment is assigned one
of six basic waveform types: square, sine, triangle, negative ramp, positive ramp and level.
Depending on the waveform type, frequency, peak-to-peak amplitude, offset, and start and stop
phase angle are then assigned by the user.

Segments at the beginning of the waveform can be programmed to be executed only once, or to
be repeated as specified by the count. A graphic representation on the LCD shows the wave­form as segments are added and is displayed prior to execution. This feature provides unique
versatility for generating a waveform that meets user requirements. Refer to PAR. 3.3.9 for fur­ther details.

1.6.4 SAVING AND RECALLING SETTINGS

The BOP offers 99 memory locations accessible from the front panel that can be used to store a
set of operating parameters for later use. For each location, the user can store operating mode,
output on/off, Main channel reference type and value, and protection reference type and value.
The stored settings can then be recalled to quickly program the unit to the predetermined set­ting. Refer to PAR. 3.3.8 for further details.

1.6.5 EXTERNAL REFERENCE (ANALOG CONTROL)

An external reference, provided through the rear analog port connector (see Table 2-10), can be
used to control the output of the BOP. The external reference may be applied directly or can be
attenuated by the digital controls (see PAR. 3.4.3.2). The BOP will limit its output based on the
user configurable limits so that, in the event of a failure in the external reference, the devices
connected to the output are protected. Refer to PAR. 3.4 for further details on using external sig­nals to control the output.

1.6.6 EXTERNAL LIMITS

When the unit is controlled by an external reference, the protection limits can also be controlled
by analog signals that are digitally calibrated. The BOP samples the limit channel inputs and
applies the proper limit levels at a 5 mS rate with the positive and negative limits being sampled
alternately. The external limit inputs are hardware-protected against overvoltage. Refer to PAR.

3.4.4

1.6.7 USER-DEFINED VOLTAGE/CURRENT MAXIMUM VALUES (SOFTWARE LIMITS)

The BOP output can be programmed not to exceed user-defined values. For example, the BOP
36-28MG, which has a maximum capacity of ±36V, ±28A, can be limited to +30V, –10V, +5A, ­1A for working with circuitry that might be damaged by higher levels. Once the limits are set, val­ues exceeding the limit values will not be accepted, including external references and protection
limits. Refer to PAR. 3.3.4.1.

1.6.8 PARALLEL AND SERIES CONFIGURATIONS

Identical BOP units may be configured in series, parallel or parallel-series (2 X 2 or 3 X 2) con­figurations. The 2 X 2 configurations doubles both output voltage and output current, the 3 X 2
configuration triples the output voltage and doubles the output current. If a series/parallel config­uration is enabled, communication between the master BOP and those configured as slave
units occurs via the BITBUS. Refer to PAR. 2.8 for further details.

BOP HIPWR 031912 1-15

1.6.9 ENERGY RECUPERATION

The BOP is a four-quadrant device as shown in Figure 1-3. Operating as a source, it delivers
energy into a passive load, and as a sink it operates as an electronic load, absorbing and dissi­pating energy from an active load. To minimize energy dissipation, the BOP employs energy
recuperation, where energy sinked from an active load is passed backwards through the output
circuit and the bidirectional input power factor correcting circuit to the a-c power lines, where it
becomes available for reuse. This technology allows high power levels using switch-mode tech­nology while maintaining high efficiency and reduced size and weight.

1.7 EQUIPMENT SUPPLIED

Equipment supplied with the BOP power supply is listed in Table 1-3.

TABLE 1-3. EQUIPMENT SUPPLIED

ITEM FUNCTION

Source Power Entry mating connector Mates with source power entry connector 142-0381 (Kepco) (IEC 320)

PAR/SER CONTROL - IN
mating connector

Mates with PAR/SER CONTROL - IN port to allow
access to pins required for calibration

PART NUMBER

142-0488 (Kepco)

1.8 ACCESSORIES

Accessories for the BOP Power Supply are listed in Table 1-5.

1.9 SAFETY

Service must be referred to authorized personnel. Using the power supply in a manner not
specified by Kepco. Inc. may impair the protection provided by the power supply. Observe all
safety precautions noted throughout this manual (see listing on page E, preceding the Table of
Contents). Table 1-4 lists symbols used on the power supply or in this manual where applicable.

TABLE 1-4. SAFETY SYMBOLS

SYMBOL Meaning

WARNING! RISK OF ELECTRIC SHOCK!

CAUTION: REFER TO REFERENCED PROCEDURE.

!

WARNING

CAUTION

1-16 BOP HIPWR 031912

INDICATES THE POSSIBILITY OF BODILY INJURY
OR DEATH.

INDICATES THE POSSIBILITY OF EQUIPMENT
DAMAGE.

BOP HIPWR 031912 1-17

FIGURE 1-3. BOP OUTPUT CHARACTERISTICS

TABLE 1-5. ACCESSORIES

ITEM FUNCTION

Mating Connector, Trigger Mates with Trigger port. 142-0527 (Kepco)

IEEE 1118 (BITBUS)
Mating connector

IEEE 488 Cable, (1 meter long) Connects BOP power supply to GPIB bus. SNC 488-1

IEEE 488 Cable, (2 meter long) Connects BOP power supply to GPIB bus. SNC 488-2

IEEE 488 Cable, (4 meter
longs)

Interconnection Kit for multiple
identical power supplies in par­allel (increase output current)

Interconnection Kit for multiple
identical power supplies in
series (increase output voltage)

Interconnection Kit for multiple
identical power supplies con­nected in two parallel branches
each comprised of 2 or 3 units
connected in series

Line Cord (250V, 20A) Provides connection to a-c mains via Nema 6-20P connector. 118-1087

Line Cord (250V, 20A) Provides connection to a-c mains via Nema L6-20P locking

RS 232 Cable Kit Contains RJ11 to RJ45 Patch cord, RJ 45 Patch cord, two RS

RS 232 Adapter (Male pins) Allows RS 232 port to be connected to DTE equipment. (Sup-

RS 232 Adapter (Female pins) Allows RS 232 port to be connected to a PC (personal com-

15-pin DSUB Connector Mating connector for Analog input connector A2A5J6

IDC 6-pin connector Mating connector for RS-232 PORT, connector A1J5 and PRO-

IDC 8-pin plug Mating connector for PAR/SER PROTECT PORT (IN and

Slides Allows easy withdrawal of unit from rack (see Figure 1-2).

Heat Sink Provides adequate cooling for calibration sense resistors. 136-0451

Allows connection to IEEE 1118 (BITBUS) port. 142-0485 (Kepco)

Connects BOP power supply to GPIB bus. SNC 488-4

Cables required to connect multiple BOP models in parallel for
increased current capability, e.g., connecting two BOP 10­75MG models in parallel to produce a virtual BOP 10-150MG.

Cables required to connect multiple BOP models in series for
increased voltage capability, e.g., connecting two BOP 10­75MG models in series to produce a virtual BOP 20-75MG.

Cables required to connect two parallel branches of series con­nected power supplies.
KIT 219-0480 is used for 2 parallel connected branches of 2
series connected units. The four (total) power supplies provide
double the output current and double the output voltage of a a
single unit
KIT 219-0481 is used for 2 parallel connected branches of 3
series-connected units. The six (total) power supplies provide
double the output current and triple the output voltage of a a
single unit

type connector.

232 adapters, one with male pins to connect to DTE equipment
and one with female pins to connect to a PC (personal com­puter), two RS 232 Loop Back test Connectors (one 6-pin and
one 8-pin) to test RS 232 communication and aid in isolating
RS 232 communication problems.

plied in KIT 219-0436.)

puter). (Supplied in KIT 219-0436.)

Dsub 15 pin hood

Dsub 15 pin male

TECTION EXT. PORT, connector A2A5J7

OUT) connectors.

(Model CS 04 includes slides, brackets, all mounting hardware
and installation instructions.)

PART NUMBER

SP2501 (CUI Stack)

KMDLA-5P (Kycon Inc.)

KIT 219-0449 (2 in parallel)
KIT 219-0446 (3 in parallel)
KIT 219-0447 (4 in parallel)
KIT 219-0448 (5 in parallel)

KIT 219-0443 (2 in series)
KIT 219-0444 (3 in series)

KIT 219-0480 (2 in series X 2

parallel branches)

KIT 219-0481 (3 in series X 2

parallel branches)

118-1088

KIT 219-0436

142-0487

(L-COM RA098M)

142-0506

(L-COM RA098F)

108-0374

(Tyco-Amp 207470-1)

142-0449

(Amphenol 17S-DA15P)

142-0536

(Amphenol 5-555176-3)

142-0535

(Amphenol 5-555176-3)

CS 04

1-18 BOP HIPWR 031912

SECTION 2 - INSTALLATION

2.1 UNPACKING AND INSPECTION

This instrument has been thoroughly inspected and tested prior to packing and is ready for
operation. After careful unpacking, inspect for shipping damage before attempting to operate.
Perform the preliminary operational check as outlined in PAR. 2.3. If any indication of damage is
found, file an immediate claim with the responsible transport service.

2.2 TERMINATIONS AND CONTROLS

a) Front Panel: Refer to Figure 3-1 and Table 3-1.

b) Rear Panel: Refer to Figure 2-1 and Table 2-1.

BOP HIPWR 031912 2-1

FIGURE 2-1. BOP SERIES REAR PANEL

TABLE 2-1. REAR PANEL CONNECTOR FUNCTIONS

NUMBER

(FIGURE 2-1)

1

2

3

4

5

6

7

8

9

10 terminals Frame or chassis terminals

11

12

13

CONNECTOR/TERMINAL

(REFERENCE DESIGNATOR)

IEEE 1118 (BITBUS)

PORT

(connector A1J4)

TRIGGER

(connector A1J3)

IEEE 488 (GPIB) PORT

(connector A1J6)

ANALOG I/O PORT
(connector A2A5J6)

PARALLEL/SERIAL

CONTROL PORT

(connectors A2A5J3, IN

and A2A5J4, OUT)

PARALLEL/SERIAL

PROTECT PORT

(connectors A2A5J1, IN

and A2A5J2 OUT)

EXT PROTECT PORT

(connector A2A5J7)

INPUT connector
(connector A7J1)

Monitor and Sensing

terminal block

(terminal block A7A1TB1)

COMMON

(terminal A7J3)

OUTPUT

(terminal A7J2)

RS232 PORT

(connector A1J5)

Used for multiple identical BOP master/slave parallel, and series and series-parallel
configurations (refer to PAR. 2.8, see Table 2-2).

May be used to initiate BOP output. (See Table 2-3.)

Used for Remote control of the BOP via the IEEE 488 (GPIB) interface (See Table
2-11.)

Provides interface for analog input/output signals. (See Table 2-10.)

Provides interconnections used to control parallel or serial configurations of identi­cal BOP’s as a single power supply (see Table 2-7 for A2A5J3, IN and Table 2-6 for
A2A5J4, OUT).

Provides interconnections used to control protection shutdown of power supplies
connected in parallel or serial configurations (see Table 2-8 for A2A5J1, IN and
Table 2-9 for A2A5J2, OUT).

Provides means for controlling protection via external circuitry and provides status
flags to external circuitry. (See Table 2-4.)

Connects source power to unit.
Pin 1 - Line (or Line 1 without Neutral connection)
Pin 2 - Neutral (or Line 2 without Neutral connection)
Pin 3 - Ground (Protective conductor terminal)

Terminal block provides external connections as follows:
OUT S: Sense line connection to load (compensate for voltage drop on connections
to load.) See PAR. 2.5.6 and 2.5.7 (Terminal 2).
OUT MON: Monitor connection used to monitor output voltage at power terminals
and to implement local sensing (Terminal 3).
GND NET: Grounding network connection (Terminal 4). See PAR. 2.5.3.1.
GND: Chassis ground connection (Terminal 5).
COM MON: Monitor return connection (Terminal 6). Used to monitor output voltage
at power terminals and to implement local sensing.
COM S: Sense line return connection from load (Terminal 7) See PAR. 2.5.6 and

2.5.7

Power output return from load.

Power output connection to load.

Used for Remote control of the BOP via the RS 232 serial interface. (See Table 2-5
for details.)

FUNCTION

TABLE 2-2. IEEE 1118 CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1, 3 (shorted) CONTROL BUS “A”

IEEE 1118 (BITBUS)

PORT

5, 8 (shorted) CONTROL BUS “B”

(connector A1J4)

6TERMINATOR

2-2 BOP HIPWR 031912

IEEE 1118, referenced to pins 5, 8
(2-Wire Differential Interface)

IEEE 1118, referenced to pins 1, 3
(2-Wire Differential Interface)

Connect to pin 5 or 8 to add an internal termination resistor
to first/last unit on the daisy chain.

TABLE 2-3. TRIGGER PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 LOGIC GND Return for TRIGGER and SHUTDOWN signals.

Operation of pin 2 is controlled by OUTP:CONT command
(PAR. B.15): STANDBY, HIGH, LOW, DISABLED.

Factory default is STANDBY upon power-up: Logic 0 ((0 volts
or short circuit) for at least 100
puts the unit in standby, however Logic 1 (TTL or 5V CMOS
level) does NOT enable the output. STANDBY key or a
remote OUTP ON command must be used to enable the out­put. Response to this signal is relatively slow (200mS max).

HIGH: Logic 1 or open (not connected) = output is on
(enabled); Logic 0 = output is off (disabled).

LOW: Logic 0 = output is on (enabled); Logic 1 or open (not
connected) = output is off (disabled).

OFF - Pin 2 is disabled and the unit does not respond to sig­nals applied to this pin. Either OFF or STANDBY is required if
using OUTP ON and OUTP OFF commands to control the
output.

Logic 0 causes a trigger event. Logic 1 (TTL or 5V CMOS
level) rearms the trigger feature.

TRIGGER PORT
(connector A1J3)

SHUTDOWN

or

OUTPUT ON-OFF

2

3 NOT USED

4 EXT. TRIGGER INPUT

µS disables the output and

TABLE 2-4. EXTERNAL PROTECTION CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

Cathode of LED optocoupler (through a 510 ohm resistor) which is
used for external isolated shutdown. Anode of LED is connected to
(A2A5J7) pin 2. A positive voltage (3.5 to 15V) at pin 2 (referenced to

1 SD_EXT_K

2 SD_EXT_A

EXT. PROTECT PORT

(connector A2A5J7)

NOTE: Upon receipt of LIST:SET:TRIG command (PAR B.72), the Output Off flag (EXT_C/EXT_E) no longer represents output on/

off state. Instead, this signal can be used to trigger an external device. The transistor state (conducting or not conducting)
and the pulse width duration is controlled by the LIST:SET:TRIG command. Upon receipt of LIST:CLE command (PAR
B.49) the Output Off flag reverts to representing output on/off status as described above.

3 PG_EXT_C

4 PG_EXT_E

5 EXT_C

6 EXT_E

pin 1) shuts down the unit functionality. The unit remains powered,
but no output is available and the red front panel FAULT LED will go
ON. Response is relatively fast (100
operation it is necessary to cycle power off, then on (preferred) or
briefly press the RESET key on the front panel keypad.

Anode of LED optocoupler which is used for external isolated shut­down. (See pin 1 above.)

Collector of optocoupler-transistor which is used for external isolated
“power OK” flag. Transistor emitter is connected to (A2A5J7) pin 4.
When unit is operating normally, transistor is saturated. Current
through transistor should not exceed 5mA and supply voltage should
not exceed 15V.

Emitter of optocoupler-transistor which is used for external isolated
“power OK” flag. (See pin 3 above.)

Collector of optocoupler-transistor which is used for external isolated
“Output OFF” flag. Transistor emitter is connected to (A2A5J7) pin 6.
When output is OFF, transistor is saturated. Current through transis­tor should not exceed 3mA and supply voltage should not exceed
15V. See NOTE below for alternate function.

Emitter of optocoupler-transistor which is used for external isolated
“output OFF” flag. (See pin 5 above.)

µS max.). To resume normal

BOP HIPWR 031912 2-3

TABLE 2-5. RS232C PORT INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 RTS Request To Send (protocol not used)

2RXD Receive Data

RS 232

PORT

A1J5

3 TXD Transmit Data

4 LOGIC GND Logic Ground

5 LOGIC GND Logic Ground

6 CTS Clear To Send (protocol not used)

TABLE 2-6. PARALLEL/SERIAL CONTROL OUT PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 SGND Local signal ground

PAR ALLEL /SER IAL

CONTROL OUT

PORT

(A2A5J4)

2 No connection

S_IN_PARALLEL Relayed signal for daisy chain connection. (See PARALLEL/SERIAL IN

3

4 No connection

PORT (A2A5J3) pin 3)

TABLE 2-7. PARALLEL/SERIAL CONTROL IN PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 SGND Local signal ground

2 No connection

S_IN_PARALLEL Input for programming output current of a parallel-connected slave. Pro-

PAR ALLEL /SER IAL

CONTROL IN PORT

(A2A5J3)

3

4 No connection

5 No connection

IOUT_M_UNIT Output for programming slave current when the unit is a parallel-con-

6

7 No connection

S_IN_SERIAL Input for programming output voltage of a series-connected slave. Pro-

8

vided by master unit.
Level: –10V to +10V controls the current between –I

nected master
Level: –10V to +10V programs slave current to –I

vided by master unit or from previous slave if multiple slaves connected.
Level: –E
+E

Onom

Onom

to –E

to +E

Onom

controls programs output voltage from

Onom

.

Onom

Onom

to +I

to +I

Onom

Onom

.

.

2-4 BOP HIPWR 031912

TABLE 2-8. PARALLEL/SERIAL PROTECT IN PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

SD_A Anode of LED optocoupler which is part of protection circuit for parallel

or series combination. Cathode of LED is connected to PARALLEL/
SERIAL PROTECT OUT PORT (A2A5J2) pin 1 (see Table 2-9). When
activated, the optocoupler shuts down the unit. LEDs from all units of the
parallel or series combination are connected in series.

parallel or series combination. Transistor emitter is connected to PAR­ALLEL/SERIAL PROTECT OUT PORT (A2A5J2) pin 2 (see Table 2-9).
When unit is operating normally, transistor is saturated. Transistors from
all units of the parallel or series combination are connected in series.

energy from the master unit.

power up to prevent shutdown during power up.

PARALLEL/SERIAL

PROTECT IN PORT

(A2A5J1)

1

PGOUT_C Collector of optocoupler transistor which is part of protection circuit for

2

SD_RETURN Completes return connection for the protection circuit which receives

3

4 No connection

5 No connection

6 No connection

7 GND Local power ground.

ALLOW EXT_ERR Provides energy for the protection circuit (master unit only). Disabled at

8

TABLE 2-9. PARALLEL/SERIAL PROTECT OUT PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

SD_K Cathode of LED optocoupler which is part of protection circuit for parallel

PARALLEL/SERIAL

PROTECT OUT

PORT

(A2A5J2)

1

PGOUT_E Emitter of optocoupler transistor which is part of protection circuit for

2

SD_RETURN Relayed connection, provides return for the protection circuit which

3

4 No connection

5 No connection

6 No connection

7 No connection

8 No connection

or series combination. (See IN port (A2A5J1) pin 1,Table 2-8.)

parallel or series combination. (See IN port (A2A5J1) pin 2,Table 2-8.)

receives energy from the master unit.

BOP HIPWR 031912 2-5

TABLE 2-10. ANALOG I/O PORT INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

CAUTION: IT IS RECOMMENDED THAT SOURCE POWER OF EXTERNAL EQUIPMENT CON-

NECTED TO THE ANALOG PORT BE APPLIED THROUGH AN ISOLATING TRANS­FORMER TO AVOID GROUND LOOPS OR POSSIBLE DAMAGE TO THE BOP DUE TO
INCORRECT EQUIPMENT A-C WIRING (E.G., DEFEATING OF GROUND CONNECTION).

1NC

External input signal, TTL logic referenced to pin 9, controls the mode
of operation when using external reference (goes to the digital board

2VM-/CM

3 IOUT_DMM

4 SGND Signal Ground used for IOUT_DMM (pin 3) return.

5 – I_LIM_EXT

ANALOG I/O

PORT

A2A5J6

NOTE 1. When disabled, the external limit channels are automatically set 20% higher than BOP nominal references.

6 – V_LIM_EXT

7NC

8NC

9 GND Ground - Used for VM-/CM (pin 2) return

10 SGND Signal Ground (used for EXT_REF (pin 11) return

11 E XT_ REF

12 GND1 Ground (Used for pin 5, 6, 13 and 14 return)

13 +I_LIM_EXT

14 +V_LIM_EXT

15 NC

that changes VM-/CM signal). Logic 0 (or pin grounded) = current
mode, logic 1 (or pin not connected, the default) = voltage mode (see
PAR. 3.4.2).

Output analog signal through 2K ohm resistor referenced to pin 4 for
monitoring overall output current, 0V to ± 10V corresponds to zero to ±
full scale current.

Analog input signal referenced to pin 12, 0V to +10V sets the negative
current limit between zero and –I
maximum current (e.g., for BOP 36-28MG +10V sets negative current
limit to –28A) (see PAR. 3.4.4). Open = disabled (see NOTE 1).

Analog input signal, 0V to +10V, sets the negative voltage limit
between zero and –E
age (e.g., for BOP 36-28MG +10V sets negative voltage limit to –36V).
Open = disabled. (See PAR. 3.4.4.) Open = disabled (see NOTE 1).

External analog reference signal referenced to pin 10, used for both
voltage mode and current mode, 0V to ±10V corresponds to zero to ±
rated nominal (full scale), voltage or current (see PAR. 3.4.3).

Analog input signal referenced to pin 12, 0V to +10V sets the positive
current limit between zero and I
mum current (e.g., for BOP 36-28MG +10V sets positive current limit to
+28A) (see PAR. 3.4.4). Open = disabled (see NOTE 1).

Analog input signal, 0V to +10V sets the positive voltage limit between
zero and E
for BOP 36-28MG +10V sets positive current limit to +36V. Open = dis­abled. (See PAR. 3.4.4.) (see NOTE 1).

, +10V corresponds to rated maximum voltage (e.g.,

Omax

, +10V corresponds to rated maximum volt-

Omax

, +10V corresponds to rated

Omax

; +10V corresponds to rated maxi-

Omax

2.3 PRELIMINARY OPERATIONAL CHECK

A simple operational check after unpacking and before equipment installation is advisable to
ascertain whether the power supply has suffered damage resulting from shipping.

Refer to Figures 2-1 and 3-1 for location of operating controls and electrical connections. Tables
3-1 and 3-2 explain the functions of operating controls/indicators and keypad keys, respectively.
Refer to PAR. 3.2 for a description of basic operating techniques.

1. With POWER switch set to off position, connect the power supply to source power (see PAR.

2.5.2).

2-6 BOP HIPWR 031912

2. With no load connected, set POWER switch to the ON position. Each time the unit is turned
on an internal self-test is performed. The alphanumeric display (LCD) shows the processor
firmware revision history and lists various tests performed during the internal self-test. As
each test is completed, PASS or FAIL is displayed. If all tests pass, the unit goes into the
default mode. If a failure occurs, the failure is displayed. Figure 3-3 shows the factory config­ured power on defaults displayed on the LCD.

TABLE 2-11. IEEE 488 PORT INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

IEEE 488

PORT

J5

1D

2D

3D

4D

5 EOI End or Identify

6 DAV Da ta Valid

7 NRFD Not Ready for Data

8 NDAC Not Data Accepted

9 IFC Interface Clear

10 SRQ Service Request

11 ATN Attention

12 SHIELD Shield

13 D

14 D

15 D

16 D

17 REN Remote Enable

18 GND Ground (signal common)

19 GND Ground (signal common)

20 GND Ground (signal common)

21 GND Ground (signal common)

22 GND Ground (signal common)

23 GND Ground (signal common)

24 LOGIC GND Logic Ground

I01 I/O Line

I02 I/O Line

I03 I/O Line

I04 I/O Line

I05 I/O Line

I06 I/O Line

I07 I/O Line

I08 I/O Line

3. Connect a digital voltmeter (DVM) (resolution and accuracy of 0.01% or better) to the
OUTPS and COMS terminals at the rear panel terminal block.

4. Use the keypad to enter the rated maximum voltage of the power supply (e.g., enter 36 for a
model BOP 36-28MG) and press ENTER. If STANDBY indicator is lit, press STANDBY key.

5. Verify DVM voltage reading agrees with programmed voltage within 0.03% of rated maxi­mum voltage and agrees with displayed voltage on LCD within 0.05% of rated maximum
voltage.

BOP HIPWR 031912 2-7

2.4 INSTALLATION

2.4.1 RACK MOUNTING

The unit is shipped with four feet attached to bottom of the unit which must be removed prior to
installation (see Figure 1-2). The BOP is designed to be rack mounted in a standard 19-inch
wide rack using the mounting ears (supplied) attached to the front panel (see Figure 1-2). Allow
a minimum of 7/8 in. (22.2 mm) above and below the unit to permit air intake necessary for
proper cooling of the unit. CAUTION: THE RACK MUST PROVIDE SUPPORT AT THE REAR

(WITHIN 6 INCHES OF THE REAR PANEL). OPTIONAL SLIDES CAN ALSO BE USED (SEE
PAR. 2.4.2).

2.4.2 SLIDE INSTALLATION

Optional slides are available for rack mounting (see Table 1-5 and Figure 1-2).

2.5 WIRING INSTRUCTIONS

Interconnections between an a-c power source and a power supply, and between the power
supply and its load are as critical as the interface between other types of electronic equipment.
If optimum performance is expected, certain rules for the interconnection of source, power sup­ply and load must be observed by the user. These rules are described in detail in the following
paragraphs.

CAUTION: WHEN WORKING WITH ACTIVE LOADS, THE VOLTAGE OR CURRENT OF

THE ACTIVE LOAD MUST NOT EXCEED THE MAXIMUM VOLTAGE OR CUR­RENT RATING OF THE BOP. OTHERWISE THE OVERVOLTAGE OR OVER­CURRENT PROTECTION WILL SHUT DOWN THE POWER SUPPLY.

2.5.1 SAFETY GROUNDING

Local, national and international safety rules dictate the grounding of the metal cover and case
of any instrument connected to the a-c power source, when such grounding is an intrinsic part of
the safety aspect of the instrument. The ground terminal of the source power connector (Figure
2-1) is connected to the chassis and the instructions below suggest wiring methods which com­ply with these safety requirements; however, in the event that the specific installation for the
power system is different from the recommended wiring, it is the customer's responsibility to
ensure that all applicable electric codes for safety grounding requirements are met. As a pre­caution, always connect the stud marked at the rear panel to proper earth ground.

2.5.2 SOURCE POWER CONNECTIONS

Source power is connected to the power supply via three-wire input power using the source
power mating connector supplied (see Table 1-3). See Table 1-2 for source power specifica­tions. This power supply operates from single phase a-c mains power (or between two phases
of 3-phase a-c mains power) over the specified voltage and frequency ranges (Table 1-2) with­out any need for range selection.

2.5.3 D-C OUTPUT GROUNDING

Connections between the power supply and the load and sensing connections may, despite all
precautions such as shielding, twisting of wire pairs, etc., be influenced by radiated noise, or
“noise pick-up”. To minimize the effects of this radiated noise the user should consider ground­ing one side of the power supply/load circuit. The success of d-c grounding requires careful
analysis of each specific application, however, this recommendation can only serve as a general
guideline.

2-8 BOP HIPWR 031912

One of the most important considerations in establishing a successful grounding scheme is to
avoid GROUND LOOPS. Ground loops are created when two or more points are grounded at
different physical locations along the output circuit. Due to the interconnection impedance
between the separated grounding points, a difference voltage and resultant current flow is
superimposed on the load. The effect of this ground loop can be anything from an undesirable
increase in output noise to disruption of power supply and/or load operation. The only way to
avoid ground loops is to ensure that the entire output/load circuit is fully isolated from ground,
and only then establish a single point along the output/load circuit as the single-wire ground
point.

The exact location of the “best” d-c ground point is entirely dependent upon the specific applica­tion, and its selection requires a combination of analysis, good judgement and some amount of
empirical testing. If there is a choice in selecting either the OUTPUT or COMMON output termi­nals of the power supply for the d-c ground point, both sides should be tried, and preference
given to the ground point producing the least noise. For single, isolated loads the d-c ground
point is often best located directly at one of the output terminals of the power supply; when
remote error sensing is employed, d-c ground may be established at the point of sense lead
attachment. In the specific case of an internally-grounded load, the d-c ground point is automat­ically established at the load.

The output and common terminals of BOP power supplies are d-c isolated (“floating”) from the
chassis in order to permit the user maximum flexibility in selecting the best single point ground
location. Care must be taken in measuring the ripple and noise at the power supply: measuring
devices which are a-c line operated can often introduce additional ripple and noise into the cir­cuit.

There is, unfortunately, no “best” method for interconnecting the load and power supply. Individ­ual applications, location and nature of the load require careful analysis in each case. Ground­ing a single point in the output circuit can be of great importance. It is hoped that the preceding
paragraphs will be of some assistance in most cases. For help in special applications or difficult
problems, consult directly with Kepco's Application Engineering Department.

2.5.3.1 GROUNDING NETWORK CONFIGURATION

When the output is floating there is a tendency for large changes in output voltage to affect the
digital programming section, possibly resulting in an erroneous output. Decoupling capacitors
from each of the two output terminals to the chassis via a terminal block link form a grounding
network. The grounding network is designed to reduce high frequency noise and ensure that the
digital programming section is not adversely affected by the dynamic swing of the output. The
power supply is shipped with the grounding network connected: a connection between terminals
TB1-4 (GND NET) and TB1-5 (GND). To disconnect the grounding network from the output,
remove the connection across TB1-4 and TB1-5.

2.5.4 POWER SUPPLY/LOAD INTERFACE

The general function of a voltage- or current-stabilized power supply is to deliver the rated out­put quantities to the connected load. The load may have any conceivable characteristic: it may
be fixed or variable, it may have predominantly resistive, capacitive or inductive parameters; it
may be located very close to the power supply output terminals or it may be a considerable dis­tance away. The perfect interface between a power supply and its load would mean that the
specified performance at the output terminals would be transferred without impairment to any
load, regardless of electrical characteristics or proximity to each other.

BOP HIPWR 031912 2-9

The stabilized d-c power supply is definitely not an ideal voltage or current source, and practical
interfaces definitely fall short of the ideal. All voltage-stabilized power supplies have a finite
source impedance which increases with frequency, and all current-stabilized power supplies
have a finite shunt impedance which decreases with frequency. The method of interface
between the power supply output and the load must, therefore, take into account not only the
size with regard to minimum voltage drop, but the configuration with regard to minimizing the
impedance introduced by practical interconnection techniques (wire, bus bars, etc.). The series
inductance of the load wire must be as small as possible as compared to the source inductance
of the power supply: although the error sensing connection to the load compensates for the d-c
voltage drop in the power leads, it cannot compensate for the undesirable output effects of the
power lead inductance. These lead impedances (both power and sensing leads) are especially
important if the load: is constantly modulated or step-programmed; has primarily reactive char­acteristics; or where the dynamic output response of the power supply is critical to load perfor­mance.

2.5.5 LOAD CONNECTION - GENERAL

Load connections require wires that are properly rated for the nominal output current of the unit.
Load connections to the BOP power supply are achieved via the OUTPUT and COMMON bus
bar-type terminals located on the rear panel. A barrier strip is provided at the rear panel for con­nection of the sense wires to the load (for remote sensing or multiple unit applications).

CAUTION: NEVER CONNECT THE LOAD TO THE SENSE TERMINALS. MONITORING

INSTRUMENTS (E.G., DVM, ETC.) ARE THE ONLY EXTERNAL EQUIPMENT
THAT MAY BE SAFELY CONNECTED TO THE SENSE TERMINALS.

CAUTION: NEVER CONNECT THE BOP OUTPUT TERMINAL (OR THE LOAD TERMINAL

TIED TO THE OUTPUT TERMINAL) TO EARTH-GROUND. OTHERWISE, IF
THE CONTROLLING DEVICE IS GROUNDED, THE BOP CAN BE DAMAGED
BY THE PROTECTION LIMIT OUTPUT CURRENT FLOWING INSIDE THE BOP
ALONG THE PROGRAMMING SIGNAL RETURN PATH.

CAUTION: DO NOT CONNECT BOTH THE LOAD AND THE PROGRAMMING DEVICE

RETURN (COMMON) TO EARTH-GROUND POTENTIAL. OTHERWISE, IF THE
COMMON POWER CONNECTION BETWEEN THE BOP AND THE LOAD IS
LOST, THEN THE BOP CAN BE DAMAGED BY OUTPUT CURRENT FLOWING
INSIDE THE BOP ALONG THE PROGRAMMING SIGNAL RETURN PATH.

NOTE REGARDLESS OF OUTPUT CONFIGURATION, EITHER LOCAL OR REMOTE OUT-

PUT SENSE LINES MUST BE CONNECTED FOR OPERATION.

1. OBSERVE POLARITIES: The OUT S sensing wire must be connected to the OUT-
PUT load wire, and the COM S sensing wire must be connected to the COMMON load
wire.

2. IF LOCAL SENSING IS USED, INSTALL LINKS (see Figure 2-2).

CAUTION: THE SAFETY FEATURES INCORPORATED INTO THE BOP TO HANDLE

ENERGY FROM ACTIVE LOADS ARE UNABLE TO PROTECT THE POWER
SUPPLY OR THE LOAD IF INPUT POWER TO THE BOP IS LOST OR IF THE
BOP MALFUNCTIONS. IT IS RECOMMENDED THAT THE USER MONITOR
“POWER OK” FLAG PINS 3 AND 4 OF THE EXTERNAL PROTECT PORT (SEE
TABLE 2-4) AND IMPLEMENT A FAST-ACTING MEANS OF DISCONNECTING
CAPACITIVE LOADS OR CROWBARRING INDUCTIVE LOADS TO PREVENT
DAMAGE TO BOTH THE BOP AND THE LOAD IN THE EVENT OF INPUT
POWER LOSS.

2-10 BOP HIPWR 031912

2.5.6 LOAD CONNECTION USING LOCAL SENSING

Figure 2-2 shows a typical configuration using local sensing and a grounded load; for local
sensing with an isolated (“floating”) load, do not install the ground connection (see Figure 2-2,
Note 2).

2.5.7 LOAD CONNECTION USING REMOTE SENSING

Figure 2-3 shows a typical configuration using remote sensing and a grounded load; for remote
sensing with an isolated (“floating”) load, do not install the ground connection (see Figure. 2-3,
Note 2).

Use #22 AWG wire, twisted pair for remote sense connections.

2.6 COOLING

The power devices used within the power supply are maintained within their operating tempera­ture range by means of internal heat sink assemblies and by two cooling fans. Periodic cleaning
of the power supply interior is recommended. If the power supply is located within a confined
space, take care that the ambient temperature, which is the temperature of the air immediately
surrounding the power supply, does not rise above the specified limits (see Table 1-2).

2.7 SETTING UP THE UNIT

The following paragraphs describe the connections and initial BOP setup needed to operate in
the desired mode.

2.7.1 CONSIDER THE LOAD TYPE

The BOP can be configured to respond differently to the Output OFF command, depending on
whether the load is defined as Active, Resistive or Battery. Refer to PAR. 3.3.6 to configure this
setting.

2.7.2 SETUP FOR LOCAL OPERATION

With all power off, connect the load to the BOP using either local or remote sensing (refer to
PAR. 2.5). If units are to be connected in series or parallel, refer to PAR. 2.8.) Then refer to PAR.

3.2 for power supply basics and local operation. The factory default configuration allows local

operation with no further setup required.

BOP HIPWR 031912 2-11

FIGURE 2-2. LOAD CONNECTIONS, LOCAL SENSING

GND

N / C OUT

OUT

MON

S

NET

GND

COM
MON

COM

S

FIGURE 2-3. LOAD CONNECTIONS, REMOTE SENSING

2-12 BOP HIPWR 031912

2.7.3 SETUP FOR REMOTE OPERATION VIA GPIB

With all power off, connect the load to the BOP using either local or remote sensing. If units are
to be connected in series or parallel, refer to PAR. 2.8. Connect the GPIB connector to the GPIB
port (see Figure 2-1 and Table 2-1). Turn power on and refer to PAR. 3.2 for power supply
basics and PAR. 3.5 for remote mode programming.

The default GPIB address is 6; to change it refer to PAR 3.5.3.1. The default configuration
allows both local and remote operation; to prevent local operation once the unit is being con­trolled from the GPIB, see PAR. B.135. Refer to PAR. 3.5.3.1 to configure the GPIB Port.

SCPI programming is described in PAR. 3.6; Appendices A and B provide syntax for SCPI com­mon and subsystem commands and queries implemented in this unit. All the features described
for Local Mode operation can be accomplished using remote SCPI commands.

2.7.4 SETUP FOR REMOTE OPERATION VIA RS 232C

With all power off, connect the load to the BOP using either local or remote sensing (refer to
PAR. 2.5). If units are to be connected in series or parallel, refer to PAR. 2.8. Connect the RS
232 connector to the RS 232 port (see Figure 2-1 and Table 2-1). Turn power on and refer to
PAR. 3.2 power supply basics and PAR. 3.5.6 for RS 232 operation. SCPI programming is
described in PAR. 3.6; Appendices A and B provide syntax for SCPI common and subsystem
commands and queries implemented in this unit. Refer to PAR. 3.5.3.2 to configure the RS 232
Port.

2.8 MULTIPLE UNIT CONFIGURATIONS

Parallel, series and series-parallel configurations of identical BOP units increases the rated volt­age and current range of the power supply. Up to five units can be connected in parallel to
increase the current: I

MAX (one unit)

x NP = I

parallel. Similarly, up to three units can be connected in series to increase the voltage: E

x NS = E

unit)

MAX (parallel combination)

where NS = number of units in series. In addition, identical
units may be connected in both series and parallel. The 2 X 2 configuration, two parallel
branches of two series-connected power supplies, doubles the output voltage and doubles the
output current of a single unit. The 3 X 2 configuration, two parallel branches of three series­connected power supplies, triples the output voltage and doubles the output current of a single
unit. Multiple unit configurations require the appropriate Interconnection Kit (see Table 1-5).

For all multiple unit configurations the master reports the system output parameters: voltage
and current; the slaves report the main channel parameter: voltage for voltage mode (series
configurations) or current for current mode (parallel configurations).

Additional hex nuts are provided in the interconnection kit for sufficient cable separation so they
can be oriented as needed to fit onto the terminal.

NOTE: Multiple unit configurations require that all individual units be properly calibrated. (Units

shipped from Kepco have been factory-calibrated.) If not, refer to Section 4 to calibrate
the individual units prior to connecting them in parallel or series. Using calibrated units
ensures that the multiple unit configuration is calibrated; calibrating the multiple unit
configuration is neither needed nor possible.

MAX (parallel combination)

where NP = number of units in

MAX (one

Before powering up the units to be configured, first connect the units in parallel or series. Fig­ures 2-4 (local sensing) and 2-5 (remote sensing) show the connections for three parallel-con­nected units; Figures 2-6 (local sensing) and 2-7 (remote sensing) show the connections for

BOP HIPWR 031912 2-13

three series-connected units. These figures allow other configurations, e.g., five parallel-con­nected units or two series connected units, etc. to be easily deduced. Figure 2-12 shows the
connections for a typical 3 X 2 (two parallel branches each consisting of three series-connected
units) configuration, as well as simplified diagrams showing required arrangements for 2 X 2.

CAUTION: FOR PARALLEL CONFIGURATIONS, REMOVE LINKS BETWEEN (COM S)

AND (COM OUT) TERMINALS OF ALL SLAVES TO PREVENT DAMAGE TO
THE UNIT AND MAINTAIN SYSTEM ACCURACY.

The following connections are required.

• Power cables

• Sense connections (either local or remote)

• All interconnection cables and terminations required for parallel, series, 2 X 2 or 3 X 2
configurations are supplied in the applicable Interconnection Kit (see Table 1-5 for part
number).

2.8.1 MULTIPLE UNIT SOURCE POWER

Multiple units must all be connected to the same a-c input power source.

CAUTION: CONNECTING MULTIPLE UNITS TO DIFFERENT A-C INPUT SOURCES MAY

DAMAGE THE BOP POWER SUPPLIES AND/OR THE LOAD.

2.8.2 MULTIPLE UNIT PROTECTION

For multiple unit configurations it is necessary to configure the protection so that a fault will shut
down all the interconnected power supplies. Figure 2-8 is a simplified diagram showing typical
interconnections for master/slave configurations.

2-14 BOP HIPWR 031912

FIGURE 2-4. PARALLEL CONFIGURATION, LOCAL SENSING, TYPICAL

BOP HIPWR 031912 2-15

FIGURE 2-5. PARALLEL CONFIGURATION, REMOTE SENSING, TYPICAL

2-16 BOP HIPWR 031912

N / C OUT

N / C OUT

GND

OUT

NET

MON

S

GND

OUT

NET

MON

S

GND

GND

COM
MON

COM
MON

COM

COM

S

S

FIGURE 2-6. SERIES CONFIGURATION, LOCAL SENSING, TYPICAL

BOP HIPWR 031912 2-17

N / C OUT

GND

OUT

NET

MON

S

GND

COM
MON

COM

S

N / C OUT

N / C OUT

GND

OUT

NET

MON

S

GND

OUT

NET

MON

S

GND

GND

COM
MON

COM
MON

COM

COM

S

S

FIGURE 2-7. SERIES CONFIGURATION, REMOTE SENSING, TYPICAL

2-18 BOP HIPWR 031912

N / C OUT

GND

OUT

NET

MON

S

GND

COM
MON

COM

S

FIGURE 2-8. TYPICAL MASTER/SLAVE PROTECTION INTERCONNECTIONS

Upon startup, PAR/SER PROT IN PORT pin 8 of the master goes low, and stays low until all
slaves are powered up. Normal power up of a unit causes the transistor connecting PAR/SER
PROT IN PORT pin 2 and PAR/SER PROT OUT PORT pin 2 to conduct. The transistors of all
units are connected in series, effectively shorting out all the shutdown diodes (the shutdown
diodes of all units are also connected in series) connecting PAR/SER PROT IN PORT pin 1 and
PAR/SER PROT OUT PORT pin 1. After all the units are powered up and operating normally,
the low at PAR/SER PROT IN PORT pin 8 changes to high, but the conducting transistors keep
the voltage at pin 8 low and the diodes are cut off. If a fault occurs, the transistor between PAR/
SER PROT IN PORT pin 2 and PAR/SER PROT OUT PORT pin 2 of the defective unit is cut off,
allowing current to flow through the shutdown diodes. This develops internal shutdown signals
that shut down all units.

2.8.3 CONFIGURING PARALLEL, SERIES, 2 X 2 OR 3 X 2 COMBINATIONS

NOTE: To power down the combination, first press the STANDBY key on the master to dis-

able the output, then turn off the slave(s) followed by the master.

1. To configure a unit to be designated as a slave proceed as follows:

a. Turn on power only to the unit to be designated as a slave.

b. From the power-up screen press

Parallel and press
password (see PAR. 3.2.4.4) before continuing.

BOP HIPWR 031912 2-19

% to enter the General Setup Menu. Highlight Series/

! to view the Multiple Units menu (see Table 2-12). If required, enter

TABLE 2-12. MULTIPLE UNITS MENU FUNCTIONS

SETTING

CONFIGURATION STANDALONE

UNIT TYPE
(for parallel and series
selections only)

CONNECTION TYPE
(for parallel and series
selections only)

CHOICES

(BOLD = Factory Default)

PARALLEL

SERIES
MASTER 2 X 2
MASTER 3 X 2

STANDALONE

MASTER +1
MASTER +2
MASTER +3
MASTER +4

SLAVE #1
SLAVE #2
SLAVE #3
SLAVE #4
SLAVE #5

PARALLEL

SERIES

FUNCTION

STANDALONE - Unit operates independently, no additional units connected.
PARALLEL - Unit to be configured for parallel operation; opens UNIT TYPE
and CONNECTION TYPE options shown below. Used when units are con­nected in parallel (increase output current) (see NOTE below).
SERIES - Unit to be configured for series operation; opens UNIT TYPE and
CONNECTION TYPE options shown below. Used when units are connected
in series (increase output voltage) (see NOTE below).
MASTER 2 X 2 - Unit configured as master in control of two parallel branches
comprised of two series connected units. Used when units are connected in
parallel and series to double output voltage and current (see NOTE below).
MASTER 3 X 2 - Unit configured as master in control of two parallel branches
comprised of three series connected units. Used when units are connected in
parallel and series to triple output voltage and double output current (see
NOTE below).

STANDALONE - Unit operates independently, no additional units connected.
MASTER+1 - Unit is the master (controller), with one slave unit connected.
MASTER+2 - Unit is the master (controller), with two slave units connected.
MASTER+3 - Unit is the master (controller), with three slave units connected.
MASTER+4 - Unit is the master (controller), with four slave unit connected.
SLAVE #1 - Unit is slave no. 1 in configuration using one to five slave units.
SLAVE #2 - Unit is slave no. 2 in configuration using two to five slave units.
SLAVE #3 - Unit is slave no. 3 in configuration using three to five slave units.
For Master 2X2 and Master 3X2, slave #3 is always the unit controlled in par­allel by the master.
SLAVE #4 - Unit is slave no. 4 in configuration using four or five slave units.
SLAVE #5 - Unit is slave no. 5 in MASTER 3X2 configuration using two paral­lel branches comprised of three series-connected units.

Not Selectable - Indicates whether parallel or series was chosen as Configu­ration type.

c. From the Multiple Units menu, highlight Configuration (use ADJUST control or the Y

or U keys) and press ! to modify. When prompted, enter ADMIN2 password (see PAR.

3.2.4.4). Select Series, Parallel, Master 2X2 or Master 3X2 and press

$ to apply

the change.

d. If either Series or Parallel were selected in step c above, Connection Type shows

Series or Parallel as selected. Highlight Unit Type and press
light SLAVE #1 and press

$ to apply the change.

e. Exit the Multiple Units menu and return to main screen by pressing

! to modify. High-

$ to save the settings

upon power-up. The unit goes to REMOTE mode, the status message reads MASTER
Module not found, the Fault indicator is lit, and the unit continues to beep once a min-

ute until the master is found. The only function keys displayed are
the system is running,

! and % are no longer available; # functions normally.

!, # and %. While

CAUTION: THE UNITS ARE NOW CONFIGURED AS SLAVE(S) TO BE CONTROLLED

ONLY BY THE MASTER. DO NOT USE THE SLAVE KEYPAD, RS 232 PORT
OR GPIB PORT TO TRY TO CONTROL THE SLAVE(S).

2. Repeat step 1 as necessary to configure all slaves, but at step c highlight applicable SLAVE
# as appropriate. Each slave MUST have a different number that is sequentially

assigned.

3. Turn on the unit to be configured as a master and note that upon power up the FAULT light
will go on (this is normal). Proceed as follows:

2-20 BOP HIPWR 031912

a. From the power-up screen press

Parallel and press
prompted, enter ADMIN2 password (see PAR. 3.2.4.4) before continuing.

! to view the Multiple Units menu (see Table 2-12). When

% to enter the General Setup Menu. Highlight Series/

b. From the Multiple Units menu, highlight Configuration (use ADJUST control or the

or U keys) and press ! to modify. Select Series, Parallel, Master 2X2 or Master
3X2, press

c. If Series or Parallel was selected in step b above, Connection Type shows

Series or Parallel as selected above. Highlight Unit Type and press
Highlight Master +1
ter +4 not permitted for series connections) and press $ to apply the change.

d. Exit the Multiple Units menu by pressing

cycles. The display shows the master power-up screen (see Figure 2-9).

e. Turn off power to the master, then turn on power to the master.

f. The power-up master module screen (Figure 2-9) shows the status of the slave(s). Refer

to Table 2-13 for an explanation of status indications for the slave(s).

If all the slaves are recognized as ready, after about 10 Seconds the master LCD reverts to the
Power On Default screen (see Figure 2-10). The slaves display the Slave Power On Default
screen (see Figure 2-11), except the unit will be in Current Mode for parallel configurations and
Voltage mode for series configurations and the message will indicate the unit is operating as a
slave. The slave number appears at the lower left of the display. For instructions to return the
slave to standalone operation, refer to PAR. 2.8.5. The fault indicators on all units are off.

$ to apply the change.

, Master +2, Master +3, or Master +4 (Master +3, or Mas-

VOLTAGE

! to modify.

$ to save the settings for subsequent power-up

CURRENT

VOLTAGE

Y

SOURCE

CPROTECT

BOP HIPWR 031912 2-21

FIGURE 2-9. MASTER POWER UP SCREEN

TABLE 2-13. SLAVE STATUS MESSAGE DEFINITIONS

Slave Status Message

Displayed on Master Power Up Screen

(see Figure 2-9)

Ready Unit is ready for operation.

STANDBY

Powered OFF Unit is not responding to polls via BITBUS.

Failed

Not Used Unit is not part of parallel configuration

Unknown Waiting for interface communication

If unit’s FAULT indicator is off, hardware error has NOT been detected,
output is ready to be turned on

Unit’s FAULT indicator is on to indicate a hardware error has been
detected.

MEANING

If the master power-up screen is still displayed after 10 Seconds, a slave was not properly rec­ognized. Pressing

% or turning power off, then on again, reconfigures the unit as a standalone

unit. Verify that the BITBUS cable is installed correctly. Verify that the slave has been properly
configured as a slave per step 1 above. Repeat step 3. If the power up screen still does not
revert to the power on default screen, refer to troubleshooting.

4. Adjust the limits to reflect the increased power capacity of the multiple unit combination as
follows:

a. From the main screen, press

b. From the General Setup menu, Highlight Max/Min Settings and press

% to enter the General Setup Menu.

!. Press @ to

restore defaults. Verify that the Max/Min settings reflect the multiple unit combination. For
example, for a parallel combination the values for +Current Max, –Current Min and ±Cur­rent Protect Max/Min now reflect the total current of the parallel combination. Voltage val­ues and limits reflect a series combination. For 2 X 2 and 3 X 2 combinations both current
and voltage are affected. NOTE: If desired, these limits may be lowered as described for a
standalone unit (see PAR. 3.3.4).

c. Press

$ to save the settings upon power-up, then % to exit the General Setup menu and

return to the power-up screen

VOLTAGE
SOURCE

FIGURE 2-10. POWER ON DEFAULT SCREEN FOR MASTER UNIT

2-22 BOP HIPWR 031912

VOLTAGE
SOURCE

0.0000

FIGURE 2-11. POWER ON DEFAULT SCREEN FOR SLAVE UNIT

2.8.4 OPERATING INSTRUCTIONS FOR MULTIPLE UNIT COMBINATIONS

1. Apply power to the combination by first turning on the master, then turn on the slave(s). If the
master is in STANDBY, depress STANDBY key on the master to apply power to the output
terminals. (To power down the combination, first press STANDBY key on the master to dis-
able the output, then turn off the slave, followed by the master.

2. When the units of a multiple unit combination are first turned on there is a brief delay until all
units are communicating over the BITBUS to form the combined assembly.

• When the master is turned on, the unit initially displays the Serial number as well as the
Firmware Revision levels and power up test results for the Display, Interface and Analog
processors, then displays the Master Power Up screen (Figure 2-9).

• When a slave is turned on, the unit initially displays the Slave Power Up screen (Figure
2-11), the Fault indicator is lit, and the unit continues to beep once a minute until the
master is found. For instructions to return the slave to standalone operation, refer to
PAR. 2.8.5. Once the slave is up and running, the

! key indicates LOCKOUT and the

# key shows DISPLAY (see PAR. 3.2.5).

• When the master finally recognizes all the slaves, the master LCD reverts to the Power
On Default screen (see Figure 2-10). The slave(s) display the voltage meter (for series
configurations) or current meter (for voltage configurations), and the message indicates
the unit is operating as a slave with slave number shown at lower left corner. The fault
indicators on all units are off.

• Operation of a multiple unit combination is done by operating the master as described
for a single unit. SCPI commands and front panel control actions applied to the master
affect the multiple unit combination. The LCD display of the master refers to the multiple
unit combination, while the front panel LCD of the slave shows the actual voltage
(series) or current (parallel) provided by the slave.

BOP HIPWR 031912 2-23

2.8.5 RESTORING A UNIT TO STANDALONE OPERATION

1. Turn off power to the master.

2. Turn off power to the slave(s).

3. Turn on power to the unit to be restored to standalone operation.

4. From the power-up screen press
Parallel and press
enter ADMIN2 password (see PAR. 3.2.4.4) before continuing.

5. Press

6. Press

7. Turn off power to the unit, then turn power on. The unit will power up as a standalone unit.

2.8.6 CHANGING MULTIPLE UNIT CONFIGURATIONS

To change a unit from series, parallel, Master 2X2 or Master 3X2 operation to a different config­uration, first set the unit to Standalone by referring to PAR. 2.8.5, then refer to PAR. 2.8.3 and
configure as desired.

@ to return to factory defaults. This configures the unit as a standalone unit.

$ to save for power-up.

! to view the Multiple Units menu (see Table 2-12). When prompted,

% to enter the General Setup Menu. Highlight Series/

2-24 BOP HIPWR 031912

N / C OUT

N / C OUT

N / C OUT

GND

OUT

GND

OUT
MON

S

OUT
MON

S

OUT
MON

S

COMSCOM

GND

NET

MON

GND

COMSCOM

GND

NET

MON

GND

COMSCOM

GND

NET

MON

N / C OUT

N / C OUT

N / C OUT

MON

S

OUT
MON

S

OUT
MON

S

COMSCOM

GND

NET

MON

GND

COMSCOM

GND

NET

MON

GND

COMSCOM

GND

NET

MON

FIGURE 2-12. 3 X 2 (3 SERIES X 2 PARALLEL) CONFIGURATION, LOCAL SENSING, TYPICAL

BOP HIPWR 031912 2-25/(2-26 Blank)

3.1 GENERAL

This section explains how to operate the 1000 Watt BOP Power Supply. The power supply can
be operated either in Local mode (see PAR’s. 3.2 and 3.3) using the front panel keypad,
ADJUST control and graphical display, or in Remote mode.

NOTE: Unless otherwise noted, operating instructions start from the power-up screen (see

either Figure 3-3 or Figure 3-4). Press
screen.

Remote mode can either be analog or digital. Analog remote uses analog signals from the Ana­log I/O port to control the output (see PAR. 3.4). Digital remote (see PAR. 3.5) uses either the
built-in GPIB (IEEE 488) (see PAR. 3.5.4) or RS 232 (see PAR. 3.5.6) interface to communicate
with a remote computer. GPIB or RS 232 communication is via one of two protocols: 1) SCPI
commands which afford full functionality of the BOP (see PAR. 3.6, Appendix A and Appendix
B) or 2) CIIL commands (for compatibility with older Kepco products). Operation in remote mode
can be simplified by the use of the VISA driver (see PAR. 3.5.5).

3.2 POWER SUPPLY BASICS

The following paragraphs describe basic operation of the front panel controls, which are used to
configure and operate the power supply. This includes a description of the keypad (PAR. 3.2.1),
graphical display (LCD (PAR. 3.2.2), how to turn the unit on (PAR. 3.2.3), how to change the
power-up defaults (see PAR. 3.3.7). An explanation of the BOP menus (PAR. 3.2.4) provides
basic techniques needed to use the ADJUST control and the function, arrow and numeric keys
in conjunction with the LCD to operate the power supply. Operator convenience functions (LCD
background and contrast, and the audible beep) are described in PAR. 3.2.5. Refer to Table 3-1
and Figure 3-1 for a description of front panel controls and indicators

SECTION 3 - OPERATION

% to exit submenus and return to the power-up

3.2.1 KEYPAD DESCRIPTION (SEE FIGURE 3-2)

The front panel keypad is comprised of 27 keys, eleven for 10 digits (0 - 9) plus decimal point,
five dedicated to software functions (

, Y, U) that work with the display to select a parameter/field and highlight a numerical digit,

T

and seven dedicated function keys (STANDBY, MODE, RESET, CLEAR, +/–, ENTER and
HELP) that are defined in Table 3-2.

BOP HIPWR 031912 3-1

FIGURE 3-1. BOP SERIES FRONT PANEL

! to %) indicated by the display, four direction keys R

NUMBER

(FIGURE 3-1)

1

2

3

4

5

6

TABLE 3-1. FRONT PANEL CONTROLS AND INDICATORS

CONTROL/INDICATOR FUNCTION

POWER ON/OFF

circuit breaker A7CB1

Alphanumeric/graphic Display

(LCD)

STANDBY indicator

Keypad

FAULT indicator

ADJUST control

Applies source power to unit

Displays output voltage and current as well as information in response to
keypad and ADJUST control entries. Displays function of soft function
keys F1 through F5, and displays information as required to perform all
local functions.

Lights to indicate when the unit is in Standby mode. Behavior of the unit
in Standby (Output off) is determined by the options chosen for Load
Type (see PAR. 3.3.6). If the Load Type is ACTIVE (default), then in
Standby mode the unit is set to voltage mode, voltage is set to zero, cur­rent protection is set to the nominal, and voltage limit is set to maximum.

Access all local functions (see PAR. 3.2.1, Figure 3-2 and Table 3-2 for
details).

Lights when a fault is detected. The failure of the following assemblies
cause the FAULT indicator to go on: A1 (any control function failure), A2
(overtemperature, instant internal overcurrent, output overvoltage/over­current, local +15V failure), A4 (input under/overvoltage, input overcur­rent, internal output under/overvoltage, internal output overcurrent,
overtemperature, fan failure, local –15V failure). When the FAULT indica­tor lights, the LCD will briefly display messages about the fault (see Table
B-5, Appendix B for details), however the FAULT indicator remains lit.
When the fault has been removed, normal operation is restored by
cycling power off, then on (preferred) or by briefly pressing the RESET
key on the front panel to initiate a shut down and power up sequence
(see RESET key, Table 3-2).

The control Increases or decreases the highlighted digit of numeric fields
(use

R or T to change the highlight). When depressed, the control

Increases or decreases the least significant digit of numeric fields. If the
output is enabled, voltage and current adjustments are immediately pres­ent at the output without pressing ENTER. For alphanumeric fields, the
control cycles through all alphanumeric and symbol characters. (use
to highlight the next character and press ENTER when complete). On
submenus the control highlights parameter of interest.

T

FIGURE 3-2. FRONT PANEL KEYPAD

3-2 BOP HIPWR 031912

E
N
T
E
R

TABLE 3-2. SPECIAL KEY FUNCTIONS

KEY FUNCTION

The STANDBY key toggles the unit between output on (enabled, STANDBY indicator off) and output off
(disabled, STANDBY indicator on). When on, the output goes to the programmed settings. Behavior of the

STANDBY

MODE

R or T

unit in Standby (Output off) is determined by the options chosen for Load Type (see PAR. 3.3.6). The
default Load Type is ACTIVE, i.e., in STANDBY the unit is set to voltage mode, voltage is set to zero, cur­rent protection is set to the nominal, and voltage limit is set to maximum.

Depressing this key shifts the operating mode from voltage to current and vice versa, and at the same time
sets the unit to STANDBY permitting the user to introduce new settings for the selected operating mode.
The operating mode is indicated at the upper right of the LCD. Setting the unit to STANDBY when the
mode is changed only occurs when using the MODE key.

From the power-up screen, these keys scroll the cursor from digit to digit within a field.

Y or U

CLEAR

+/–

ENTER

HELP

! through

%

RESET

switch

From the power-up screen, these keys scroll through the main or protection fields. Also used to scroll
though and select options on other menus.

Clears numeric value to 0 (zero). Clears alphanumeric characters for new entry.

Switches the sign between + and – when inputting numerical values. The sign change applies only to the
main channel: voltage in voltage mode, current in current mode.

CAUTION:Pressing +/– key while the power is applied to the load will reverse the polarity of voltage
applied to the load.

Activates highlighted parameters. When setting voltage/current values using the keypad, the values
entered are not programmed until ENTER is pressed.

Provides context-sensitive help to assist in using the keypad and display to program the unit. Press HELP
repeatedly for more help messages.

The “soft” function keys are software dependent, and will change depending on the operation being per­formed. The key function is indicated by a box in the LCD which is aligned with the key (see PAR. 3.2.2).

Switch is recessed and requires the use of a tool to prevent inadvertent activation. Pressing RESET briefly
causes the unit to shut down followed by execution of a power on sequence which results in the unit being
set to the power on defaults (see PAR. 3.3.7). To restore normal operation after a fault has been cleared it
is recommended that the unit be powered off, then on again instead of using the RESET key.

CAUTION:Pressing RESET will cause voltage transients to appear at the output which may damage
a connected load.

3.2.2 LCD AND POWER-UP SCREEN DESCRIPTION

The LCD display is a 320 x 240 pixel monochrome window that displays various menus depend­ing on the state of the power supply and operator input. At the power-up screen, the LCD will
show actual voltage and current at the BOP output, the mode (at the upper right), the function of
the soft keys to the right, help text at the bottom, and main and complementary limit channel set­tings above the help text.

The power-up screen (Figure 3-3 or Figure 3-4) is presented upon power-up or when all sub­menus of a function have been exited. This screen shows analog and digital representations of
the actual BOP output in the center of the display.

At the upper right of the display, the mode of operation is displayed:

• Voltage source

• Voltage sink

• Current source

• Current sink

BOP HIPWR 031912 3-3

VOLTAGE

0.

0000

FIGURE 3-3. POWER-UP SCREEN SHOWING GRAPHIC METERS

VOLTAGE

0.

0000

FIGURE 3-4. POWER-UP SCREEN SHOWING TIME LINE GRAPH

When in Voltage mode, the power supply will (within the configured and rated limits) provide the
programmed output voltage. Current is determined by the load, and cannot exceed the Current
Protect limits. Mode displayed at the upper right is VOLTAGE SOURCE. If the protect limit is
reached, CPROTECT is displayed.

When in Current mode, the power supply will (within the configured and rated limits) provide the
programmed output current. Voltage is determined by the load, and cannot exceed the Voltage
Protect limits. Mode displayed at the upper right is CURRENT SOURCE. If the protect limit is
reached, VPROTECT is displayed.

If CPROTECT (current protection), VPROTECT (voltage protection) or PROTECT (analog pro­tection, either voltage or current) is displayed, the power supply output is controlled by the pro­tect channel and will not exceed the preprogrammed protection limit.

When in Source mode, the power supply is delivering (sourcing) energy to a passive load.

3-4 BOP HIPWR 031912

When in Sink mode, the power supply is operating as an electronic load, absorbing and recu­perating the energy of an active load. Recuperated energy is passed back into the a-c source
power line. Mode displayed at the upper right is VOLTAGE SINK when the unit is in voltage
mode and an external constant current is injected into the BOP. Correspondingly, CURRENT
SINK is displayed when the unit is in current mode and an injected current from an external con­stant voltage is presented at the output of the BOP. These messages are normally displayed
briefly when voltage is decreased towards zero, and may also be displayed briefly during
changes in a capacitive load.

The bottom lines of the display provide STATUS, ACTIVE SETTINGS and MESSAGES (includ­ing error messages).

STATUS includes whether the unit is under local or remote control, and identifies the main and
protect channels.The protect channel will show either a single entry for both positive and nega­tive VPROTECT or CPROTECT or separate entries for + and – VPROTECT or CPROTECT.
This is established by selecting either Bipolar or Independent for Protect Entry (see PAR,

3.3.3.1).

ACTIVE SETTINGS show the values that will be applied to the respective channel. The high­lighted settings are used to program the unit and can be changed using the keypad or ADJUST
control after highlighting. If these are changed using the keypad, the ENTER key must be
pressed to program the unit; if the ADJUST control is used, the changed setting immediately
programs the unit without pressing ENTER. If the main channel indicates CURR-EXT or VOLT­EXT, the setting establishes the full scale output corresponding to a 10V analog signal (see
PAR, 3.4.3.2). If the main or protect channel indicates EXTERNAL, the corresponding setting is
determined by an analog reference (see PAR. 3.4.3.1.

MESSAGES change depending on the particular screen being displayed. Error messages are
displayed for both local and remote operation, and only appear briefly.

At the right of the display, five graphic boxes indicates the active function of the soft function
keys,

! through %. Depressing the corresponding key on the keypad activates the function

shown on the display. These functions are arranged in a menu format (see PAR. 3.2.4).

3.2.3 TURNING THE POWER SUPPLY ON

CAUTION: DO NOT REPEATEDLY TOGGLE THE CIRCUIT BREAKER/SWITCH AS THIS

MAY DAMAGE THE UNIT.

Set POWER ON/OFF circuit breaker/switch (1, Figure 3-1) on front panel to ON. If actuator does
not lock when released, wait a few seconds before trying again. The circuit breaker is “trip-free”
design; if overload exists, contacts cannot be held closed by actuator.

When the power supply is turned on, it performs a brief self-test that includes testing the three
processors (analog, interface and display), then displays the power-up screen (see Figure 3-3
or 3-4). If an error is detected, the FAULT indicator will light, information about the error will be
briefly displayed on the LCD.

If the unit powers up in REMOTE mode, press
mode.

NOTE: If the unit is a Slave of a multiple unit configuration, the unit will power up in REMOTE

and will display LOCAL LOCKOUT once the Master has taken control of the Slave. To
restore LOCAL control of a Slave, power down both master and slave, then turn on
only the slave and press

! (see PAR. 3.3.1) to set the unit to LOCAL mode.

! (see PAR. 3.3.1) to set the unit to LOCAL

BOP HIPWR 031912 3-5

If the display is not viewable, press # twice. The display will cycle through the range of con­trast settings. Press

To select between the meter (Figure 3-3) and time line (Figure 3-4) displays refer to PAR.

3.2.5.4. To change the default power-up settings, refer to PAR. 3.3.7.

3.2.4 HOW TO ACCESS THE MENUS

From the power-up screen, pressing the Function keys indicated on the LCD opens the associ­ated menu. The menu opened may list submenus that may be opened either directly by press­ing the associated Function keys, or by highlighting an item on the list and pressing the
View/Modify function key. Menus and submenus will display a list of parameters, with the top
one highlighted. The function key assignments can vary, but generally offer the following
choices:

•

! allows the highlighted parameter to be viewed or modified. After changing the

parameter, the following choices are available.

•

$ - SAVE or ENTER to save the change

•

% - EXIT to abort the change and exit to the previous menu.

•

@ - RESTORE DEFAULT restores factory defaults for the parameters displayed

(except for GPIB address). The factory defaults may be saved as power-up defaults by
pressing

# again to lock in the preferred contrast.

$.

•

# - The function varies, depending on the menu. In most cases # is used to abort a

change without applying the modified setting. From the power-up screen
adjust contrast. In the Revisions/TEST submenu of the General Setup Menu,
to execute a test.

•

$ - SAVE FOR POWER-UP Saves the configuration shown as a power-up setting so

the changes will not be lost when the unit is turned off.

•

% - APPLY EXIT applies the current (changed) setting without saving for power-up and

exits to the previous menu or to the power-up screen, EXIT leaves the current menu
without saving or applying changes.

3.2.4.1 OVERALL MENU STRUCTURE

The menu structure is as follows (NOTE: BOLD = Factory Default):

Power-up Screen (Power up menu)

•

! - Save/Recall

• • Saved Setups (Figure 3-8): Recall one of 99 saved setups.

• • • Saved Setup Details (Table 3-8): Mode (voltage/current), main channel reference (internal/exter­nal/external reference level) and setting, protection limit (internal/external/lesser limit) and setting(s),
output status (on/off)

•

@ - Waveform

• • Saved Waveforms (Figure 3-9): Choose one of 16 saved waveforms.

• • • New Waveform Settings (Table 3-12): Name (max. 10 characters), protection settings, count, mode
(voltage/current)

• • • Waveform Settings (Figure 3-10): Name, protection settings, count, segment list, mode

• • • • Segment Details (Table 3-11): Type (square/±ramp/triangle/sine/level), frequency or period, p-p

amplitude, offset, start/stop angle for sine and triangle, initial/repeat

•

# - Display

• • Display and Beep Settings (Table 3-3): Display (meters/graphics (12 choices)), background (white/black),

contrast, beep (On/Off/Error only)

# is used to

# is used

3-6 BOP HIPWR 031912

• $ - Analog Remote Setup

• • Analog Remote Settings (Table 3-15): Reference input (internal/external/external reference level), protec­tion limit (internal/external/lesser limit), external mode (enable/disable)

•

% - General Setup (Figure 3-6)

• • Interface Settings (Table 3-16): Data format (SCPI/CIIL), GPIB address (default = 6), *RST sets Output
(on/off), Device clear (SCPI/MATE), Serial Baud (Off/9600/19200), Xon/Xoff (enable/disable), prompt
(enable/disable)

• • Max/Min Settings (Table 3-5): Protect Entry (Bipolar/Independent); for voltage mode: +Voltage max, –Volt­age min, ±CProtect max/min; for current mode: +Current max, –Current min, ±VProtect max/min

• • Load Type (Figure 3-6): Active/Resistive/Battery

• • Revisions/Test (Table 3-13): (Tests: display, keypad, interface, serial, analog and output)

• • Calibration (PAR. 4.4): Voltage, Current and External and Controls calibration

• • Power-up Settings (PAR. 3.3.7): Mode (Volta ge/Current), Main channel reference (Internal/External/Exter-
nal Reference Level), protect channel type (Internal/External/Lesser Limit), Voltage Protect Limit (current
mode, Current Protect Limit (voltage mode) output on/off

• • Password (See Figure 3-5 for default settings)

• • • Password Settings: Menu protection (Interface/Max-Min/Load/Test/Power-up/Keypad @ local/Key-

pad@power-up), Save Display chg (Enable/Disable), Passwords (Main/Admin1/Admin2 or Unpro-

• • Series/Parallel (Table 2-12): Configuration (Standalone/Parallel/Series/Master 2X2/Master 3X2); for parallel

tected)

or series: Unit Type (Standalone/Master+1 to+4/Slave #1 to #5) and Connection Type: shows Series or Par­allel).

3.2.4.2 HOW TO MODIFY A PARAMETER

First access the parameter by accessing the proper menu as described above (PAR 3.2.4);
Tables 3-3 through 3-15 list the menu parameters. To modify a parameter listed in a menu or
submenu, proceed as follows:

1. Highlight the parameter using the

2. When the desired choice is highlighted, press

Y and U keys.

! to modify the active setting. The choices

are displayed with the active setting highlighted. In the case of numerals, the units digit is
highlighted.

• To change a numeric setting, press the number keys, then press ENTER to program the

numbers entered. Use the CLEAR key to clear numbers entered and start over. The
ADJUST control can also be used to increment or decrement the highlighted digit.
Pressing ADJUST while rotating adjusts the least significant digit. If the output is on (unit
not in Standby) changes made using the ADJUST control are immediately applied to the
output.

• For alphanumeric characters use multiple presses of the keys for letters or symbols:

0

(space), 1 (+, –, /), 2 (ABC), 3 (DEF), 4 (GHI), 5 (JKL), 6 (MNO). 7 (PQRS),

8 (TUV), 9 (WXYZ). Use the T key to highlight the next character. As an alternative,

the

U or Y keys or ADJUST control will scroll through numbers, and letters and sym-

bols. Use the CLEAR key to clear the entire alphanumeric field and start over

3. Press

NOTE: Press HELP key for more information, press HELP again to see multiple screens;

$ to apply the change and return to the menu (to change another parameter, repeat

steps 1 and 2). To abort (return to the menu without applying the change), press

press CLEAR key to exit the help screen.

%.

3.2.4.3 PASSWORD SETUP.

Parameters that can be protected may be designated as Unprotected (no password required) or
assigned one of three possible passwords: Main Unit, Admin 1 and Admin 2. The three pass­words can be used to independently protect certain settings to prevent tampering or inadvertent

BOP HIPWR 031912 3-7

reconfiguration of the BOP, yet allow access to qualified personnel. These password levels
apply only to local operation. When in remote, only the main password is accessible, acting

as a general password (see PAR B.139). The functions that can be password protected are
Interface settings, Max/Min settings, Load type, Test, Calibration, Power-up Settings, and Key­pad lockout at power-up (see Figure 3-5 for factory default password settings). In addition, it is
possible to prevent changes made to the display settings from being saved for power up by set­ting Save Display Chg to Disable.

When the unit is operating in remote mode with Keypad @ local activated, a password is
required before the unit can be returned to local operation. In addition, when a waveform is exe­cuting in local mode, depressing
waveform is stopped.

To change any password you must enter the Admin 2 password to access the Password Menu.
The unit is shipped with the Admin 2 password set to “KEPCO,” the Main Unit password set to
”DEFAULT,” and the Admin 1 password is not assigned. To change the password or to protect
one of the protected menus, proceed as follows:

% to stop the waveform requires a password before the

1. Press

2. Enter the Admin 2 password (see PAR. 3.2.4.4 for details), then press

3. To change a password, highlight the Main Unit, Admin 1 or Admin 2 password and press

4. Press CLEAR to erase the previous password from memory.

5. Enter the new password (see PAR. 3.2.4.4) and press

NOTE: Do NOT use space characters for passwords

6. To protect or unprotect a menu highlight the password setting for the menu (Interface, Max-

NOTE: To restore the password protection defaults shown in Figure 3-5, press

7. When complete, press

% from the power-up screen to enter the General Setup menu. Highlight Password

and press

!.

! to verify. The

Password Protection menu (see Figure 3-5) is now displayed.

!

to modify.

$ to save. Up to eight characters

are permitted for passwords.

Min, Load, Test, Power-up, Keyboard @ Local, Keypad@power-up) and press
ify. Highlight either the desired password (Main Unit, Admin 1 or Admin 2) or Unprotected
and press

$ to save.

! to mod-

@; this leaves

the three individual passwords remain unchanged.

$ to save for power-up or % to apply the changes (without saving

for power-up) and exit.

3.2.4.4 HOW TO ACCESS A PASSWORD PROTECTED MENU

An administrator can independently assign one of three passwords (Main Unit, Admin 1 or
Admin 2) to eight functions. Under General Setup the Series/Parallel submenu is assigned the
Admin 2 password; this cannot be changed.

When trying to modify a protected setting or access a protected menu, the message PASS­WORD IS REQUIRED appears at the top, and the first character is highlighted. Proceed as fol­lows:

3-8 BOP HIPWR 031912

1. Enter the first character of the password using the keypad or ADJUST control (see PAR.

3.2.4.2 for entry of alphanumeric characters). (To change the password, refer to PAR.

3.2.4.3.)

2. Press

3. Repeat steps 1 and 2 until the correct password is displayed, then press
protected setting or menu will now be accessible

NOTE: If the password is incorrect, the message Password incorrect is displayed at the
bottom of the screen. Press CLEAR and proceed to step 1 above.

T to move to the next character and repeat step 1 for the next character of the pass-

word.

! to verify. The

VOLTAGE

0.0000 0.0000

CURRENT

Admin 2

Admin 2

VOLTAGE

SOURCE

FIGURE 3-5. PASSWORD PROTECTION MENU, FACTORY DEFAULTS

3.2.5 OPERATOR CONVENIENCE FUNCTIONS (DISPLAY MENU)

From the power-up screen (Figure 3-3), pressing
menu (see Table 3-3). The functions listed can be modified using the techniques described in
PAR.3.2.4). This function is always available, whether in Local, Remote or Local/Lockout mode.

NOTE: If

3.2.5.1 ADJUSTING LCD BRIGHTNESS, CONTRAST AND BACKGROUND

From the power-up screen, (Figure 3-3), press
contrast gradually alternates between light and dark. When the contrast is acceptable, press
to apply the change and exit contrast adjust. Use the T and R keys for fine adjustment of con­trast. Contrast can also be adjusted from the power-up screen by pressing
ing

T and R as needed for fine adjustment.

$ is not available when the operator convenience menu is open, these functions

(see PAR. 3.2.5.1 to 3.2.5.4) can not be saved for power-up. To save for power-up it is
first necessary to change SAVE DISPLAY CHG at the password setup from DISABLE
(default) to ENABLE (see PAR. 3.2.4.3 and Figure 3-5). After saving the changes for
power-up, SAVE DISPLAY CHG at the password setup can be set to DISABLE to pre­vent future changes if desired.

# opens the operator convenience functions

# twice to initiate contrast adjustment. The

#

# once, then press-

BOP HIPWR 031912 3-9

To change the background, press # from the power-up screen, Highlight Background, press

!, highlight Black or White, then $ to save. Press $ exit and save for power-up or % to

apply the changes (without saving for power-up) and exit.

TABLE 3-3. DISPLAY (OPERATOR CONVENIENCE) MENU FUNCTIONS

SETTING

NOTE: To save any of the functions listed below for power-up it is necessary to first change SAVE DISPLAY CHG at the password

setup (see PAR. 3.2.4.3and Figure 3-5) from DISABLE to ENABLE.

GRAPHIC DISPLAY Meters

DISPLAY
BACKGROUND

REMOTE
DEBUG

KEY PRESS BEEP On

WAVEFORM STOP Output Off

NOTE: Control display contrast by pressing

acceptable. Contrast can also be set directly by pressing

CHOICES

(BOLD = Factory Default)

75s Graph
30s Graph
15s Graph

7.5s Graph

3.8s Graph

1.5s Graph

0.8s Graph

0.5s Graph

0.3s Graph

0.15s Graph

0.04s Graph

0.08s Graph

White

Black

Off

On

Error Only

Off

Last Level

Current Lvl

# twice to dynamically change the contrast, then press # to set when contrast is

METERS - Output voltage and current are displayed on representations of ana­log meters.
GRAPH - Displays a sample of the output for the time indicated (see Figure 3-

4). The complete time-line uses 240 points. E.g., selecting 2 Second Graph
means that 2S/240 = 50ms sampling, i.e., every 50ms a snapshot of the output
state is used to produce a single point.

WHITE - Sets the background to white and displays black characters.
BLACK - Sets the background to black and displays white characters.

OFF - LCD does not show programmed settings for main and protection chan­nels while in remote mode of operation (local mode is unaffected).
ON - Programmed settings for main and protection channels are displayed,
however the unit responds more slowly.

ON - provides an audible beep for each key press and for each error received.
ERROR ONLY - silences the beeps for each key press; errors will still cause
beep.
OFF - silences all beeps including key presses and errors except for power-up
and unit faults.

Output Off - When waveform is stopped (either count complete or
pressed), output freezes at whatever level the waveform was at when
pressed or count completed, then after a brief delay output is set to STANDBY
(disabled).
Last Level - When waveform is stopped (either count complete or
pressed), waveform runs through full cycle. The output stops at the last gener­ated value of the waveform (e.g., for a sinewave segment of 0° to 270°, 10V
amplitude, 0V offset, when F5 is pressed the output will end up at -10V).
Current lvl - When waveform is stopped (
ever level the waveform was at when

# once and using T and R as needed (see PAR. 3.2.5.1).

FUNCTION

%

% was

%

% pressed), output freezes at what-

% was pressed.

3.2.5.2 DISPLAYING PROGRAMMED SETTINGS IN REMOTE MODE

When Remote Debug is set to OFF (default), the programmed settings for main and protection
channels that are displayed on the LCD in local mode, are not displayed while in remote mode
and the LCD reads “Display settings off.” When set to ON, the programmed settings for main
and protection channels are displayed, however the unit responds more slowly in remote mode.

To change the Remote Debug setting, press
light Remote Settings, press
for power-up or

% to apply the changes (without saving for power-up) and exit.

3-10 BOP HIPWR 031912

# from the power-up screen (Figure 3-3), High-

!, highlight On or Off, then $ to save. Press $ exit and save

3.2.5.3 ENABLING/DISABLING AUDIBLE BEEPS

From the power-up screen (Figure 3-3), press
using the techniques described in PAR. 3.2.4). Even though audible beeps are set to off, the
beeps will still sound upon power-up or detection of a power supply fault.

3.2.5.4 DISPLAYING METERS OR GRAPH (TIME LINE)

The top screen can be configured to either display graphical analog meters (Figure 3-3) show­ing a coarse representation of voltage and current in addition to the digital readout, or a graphi­cal time line (Figure 3-4). The graphical time line is not an oscilloscope type display. Instead, it
samples the output and refreshes the screen at a specified interval: 75, 30, 15, 7.5, 3.8, 1.5, 0.8,

0.3, 0.15, 0.08 or 0.04 Seconds. This can be useful when executing a waveform, although it is

not a substitute for monitoring the output with an oscilloscope for precision. There is no correla­tion between voltage and current graphs. For the best graphical representation choose the
graph time that is closest to, but greater than, the waveform time duration.

From the power-up screen, press
Highlight any of the meters or one of the graph selections and press
to save for power-up or % to exit.

3.2.5.5 WAVEFORM STOP

Output Off - When waveform is stopped (e. g., by pressing
the waveform was at when
(disabled).

#, then highlight the Graphic Display setting and press !.

% was pressed, then after a brief delay output is set to STANDBY

#, then refer to Table 3-3 and modify the setting

$ to save. Then press $

%), output freezes at whatever level

Last Level - When waveform is stopped (e. g., by pressing
cycle. The output stops at the last generated value of the waveform (e.g., for a sinewave seg­ment of 0° to 270°, 10V amplitude, 0V offset, when

Current lvl - When waveform is stopped (e. g., by pressing
the waveform was at when

3.3 LOCAL MODE OPERATION

Local operation of the BOP power supply can be accomplished from the front panel via the 27
key keypad, and the ADJUST knob. All indications are provided by the 4-inch graphical display
(LCD).

3.3.1 SETTING LOCAL MODE

When the power supply is turned on, it is automatically set to Local mode. If the unit is in
REMOTE mode and the display shows F1-LOCAL, pressing

3.3.1.1 KEYPAD LOCKOUT

To prevent the unit from entering local mode from the front panel once remote mode has been
entered, refer to PAR. 3.2.4.3 and assign a password to “Keyboard @ local.“ Then the unit
will not permit local operation until the proper password has been entered (see PAR. 3.2.4.4).
NOTE: The

If the
command, SYST:KEYB DIS (see PAR. B.135). To unlock the keypad, either send SYST:KEYB
ENAB or turn the unit off then on again.

# key can still be used to adjust display contrast before entering the password.

! key legend is “F1 - LOCAL LOCK OUT,” the keypad has been locked by the remote

%) was pressed.

%), waveform runs through full

%) is pressed the output will end up at -10V

%), output freezes at whatever level

! sets the unit to LOCAL mode.

BOP HIPWR 031912 3-11

3.3.1.2 LOCAL PASSWORD PROTECTION AT POWER-UP

It is possible to require a password before the front panel controls can function when the unit is
powered up. From the power-up screen, press
password (see PAR. 3.2.4.4) and press
@ Pwr-up and press F1. Highlight on of three password settings and press
press

$ to save for power-up (or % to exit without applying the changes). When the unit is

next powered up, pressing any keypad key or rotating the ADJUST control requires entry of the
password selected above before continuing. NOTE: The
play contrast before entering the password.

3.3.2 SETTING VOLTAGE OR CURRENT MODE

The BOP uses two separate channels, one to set output voltage or current and one to set the
corresponding protection limit. The main channel is determined by the MODE key (in local
mode) which alternately selects either Voltage mode or Current mode or by SCPI command (in
digital remote mode). The protection channel is determined automatically by the main channel
selected. When Voltage mode is selected, the current protection channel is active, and when
Current mode is selected, the Voltage protection channel is active. Table 3-4 defines the voltage
and current parameters used in this manual.

3.3.3 PROGRAMMING VOLTAGE OR CURRENT AND ASSOCIATED PROTECT LIMITS

From the power-up screen the settable voltage/current parameters are displayed at the bottom
of the LCD above the HELP message (see Figure 3-3). Use
protect channel. (For BOP protect limits refer to PAR. 3.3.4.2 and for external limits see PAR.

3.3.4.3.)

%, highlight password, then !. Enter Admin 2

! to verify. Under Menu Protection, highlight Keypad

$ to save. Then

# key can still be used to adjust dis-

Y or U to highlight the main or

1. To verify that the unit is configured for internal references press
screen and verify that Reference Input and Protection Limit are set to Internal, and External
Mode is set to Disable. If necessary to change a setting, use
parameter, and press
then press
PAR. 3.4.

2. Verify that the load has been configured properly to ensure that the unit behaves as
expected when the output is off (see PAR. 3.3.6 for details).

3. Press MODE key to select the main channel (VOLTAGE or CURRENT); the associated
PROTECT channel is automatically selected and displayed.

4. Set the output on or off as desired using the STANDBY key. The output is off (disabled)
when the STANDBY indicator is lit, on (enabled) when not lit.

5. Use
local mode. These methods can be used either when the output is disabled (STANDBY indi-
cator lit) or enabled.:

CAUTION: WHEN THE ADJUST CONTROL IS ROTATED, THE ACTIVE PARAMETER IS

$ to save for power-up or % to exit. If analog programming is desired, refer to

Y or U to highlight the main channel. There are two ways to program the output in

IMMEDIATELY EFFECTIVE IF THE OUTPUT IS ENABLED (ON = STANDBY
INDICATOR NOT LIT). THE VOLTAGE/CURRENT APPLIED TO THE LOAD
CHANGES AS THE ADJUST CONTROL IS ROTATED.

! to modify. Highlight the desired selection and press $ to save,

$ from the power-up

Y or U to highlight the

3-12 BOP HIPWR 031912

a. Use the ADJUST control to increase or decrease the main channel setting (e.g., volt-

age when the unit is in voltage mode). Start with the most significant digit of the desired
value, then use

T to highlight the next digit. For fine adjustment press the ADJUST

control in while rotating the knob to modify the least significant digit.

b. Enter the desired value on the keypad using the number keys. For example, to program

the BOP to 75.8V, press the following keys in order
fine adjustment use

Y, and U to modify the least significant digit. To correct the entry

75.8 then press ENTER. For

before activation press the CLEAR key to set the value to zero and start over. When the
desired value is displayed, press ENTER. This causes the new value to appear at the
output and be applied to the load if the output is enabled.

TABLE 3-4. VOLTAGE AND CURRENT PARAMETER DEFINITIONS

To m o d ify

Term Definition

refer to PAR.

Local Remote

+E

Onom

–E

Onom

+I

Onom

–I

Onom

+Voltage
–Voltage

+Voltage max
–Voltage min

+Current Protect
–Current Protect

+Current Protect Max
–Current Protect Min

Minimum (box)
+Current Protect Min
–Current Protect Max

The nominal (rated) output voltage of the unit determined by model; e.g. for
a BOP 36-28MG, ±E

The nominal (rated) output current of the unit determined by model; e.g. for
a BOP 36-28MG, ±I

Voltage mode only. Positive (+) and negative (–) output voltage values
established by keypad or remote command.
Range (+): 0 to +Voltage max
Range (–): 0 to –Voltage min

Voltage mode only. Maximum (positive) and minimum (maximum
negative) voltage that can be set.
Value (+): 0 to +E
Value (–): 0 to –E

Voltage mode only. Defines maximum (+) current and Minimum (maximum
negative) (–) that unit can source or sink.
Range (+): +Current Protect min to +Current Protect max
Range (–): –Current Protect max to –Current Protect min

Voltage mode only. Maximum setting for +Current Protect and Minimum
(maximum negative) setting for –Current Protect.
Value (+): +Current Protect min to (1.01 x +Current max)
Value (–): –Current Protect max to (1.01 x –Current min)

Voltage mode only. Minimum (positive) setting for +Current Protect and
maximum (maximum negative) setting for –Current Protect. Values of ±Cur­rent Protect between +Current Protect Min and –Current Protect Max (near
zero) are not allowed.This zone (also referred to as the minimum (box) is
automatically calculated by the BOP (see Figure 1-3).

Onom

Onom

Onom
Onom

is 36V.

is 28A.

N/A N/A

N/A N/A

B.86

3.3.4.1 B.88, B.89,
B.90, B.92

B.29, B.30,

B.35, B.33

3.3.4.2 B.37, B.38,
B.41, B.39

N/A N/A

+Voltage Protect
–Voltage Protect

+Voltage Protect Max
–Voltage Protect Min

BOP HIPWR 031912 3-13

Current mode only. Maximum positive (+) and minimum (maximum
negative) (–) voltage that can appear at the output.
Range (+): +Voltage Protect min to +Voltage Protect max
Range (–): –Voltage Protect max to –Voltage Protect min

Current mode only. Maximum (positive) setting for +Voltage Protect and
Minimum (maximum negative) setting for –Voltage Protect.
Value (+): +Voltage Protect min to (1.01 x +Voltage max)
Value (–): –Voltage Protect max to (1.01 x –Voltage min)

B.96, B.97,

B.102,

B.100

3.3.4.2 B.104,

B.105,
B.108,

B.106

TABLE 3-4. VOLTAGE AND CURRENT PARAMETER DEFINITIONS (CONTINUED)

Term Definition

Local Remote

To m o d ify

refer to PAR.

Minimum (box)
+Voltage Protect Min
–Voltage Protect Max

+Current
–Current

+Current max
–Current min

Current mode only. Minimum (positive) setting for +Voltage Protect and
maximum (maximum negative) setting for –Voltage Protect. Values of ±Volt­age Protect between +Voltage Protect Min and –Voltage Protect Max (near
zero) are not allowed. This zone (also referred to as the minimum (box) is
automatically calculated by the BOP (see Figure 1-3).

Current mode only. Positive and negative output current established by
keypad or remote command.
Range (+): 0 to +Current max
Range (–): 0 to –Current min

Current mode only. Maximum (positive) and minimum (maximum
negative) current that can be set.
Value (+): 0 to +I
Value (–): 0 to –I

Onom
Onom

NOTE: The value entered for the main channel and the protect channel is automatically pre-

vented from exceeding the preset maximum software limit (see PAR. 3.3.4).

6. To program the corresponding Protect channel, press

Y or U as necessary to highlight the

Protect channel. Then set the value using either of the two methods described above. If the
Protect Entry setting (see PAR. 3.3.3.1) is set to Independent, separate entries for the posi­tive and negative protect channel are possible. Otherwise the value entered is applied to
both positive and negative protect channels.

3.3.3.1 SELECTING BIPOLAR/INDEPENDENT PROTECTION LIMITS

N/A N/A

B.19

3.3.4.1 B.21, B.22,
B.25, B.23

The BOP can be configured to show the protection limits as either a single value that applies to
both protection channels or show individual settings for positive and negative protection limits.
Selecting Independent protection limits means that the positive and negative limits are dis­played (and can be modified) independently. Bipolar means that for each protection limit (volt­age or current) a single value applies to both the positive and negative limits; only one value is
displayed and can be edited for both ± protection limits.

Press

% from the power-up screen to enter the General Setup menu (Figure 3-6), then high-

light Max/Min Settings. Press
Password is required, see PAR. 3.2.4.4 for instructions.) Highlight Protect Entry and press
change it. Highlight Bipolar or Independent, then
press

$ to save for power-up, or # to abort, or % to apply the changes (without saving for

! to enter the Max/Min Settings submenu (Figure 3-7). (If a

! to

$ to save, or % to abort. When complete,

power-up) and exit.

3-14 BOP HIPWR 031912

VOLTAGE

CURRENT

0.0000 0.0000

FIGURE 3-6. GENERAL SETUP MENU

VOLTAGE

SOURCE

VOLTAGE

0.0000 0.0000

FIGURE 3-7. MAX/MIN SETTINGS MENU

CURRENT

VOLTAGE

SOURCE

Selection of Bipolar does not immediately change the protect limit values; it changes how the
protect settings are displayed and set from the power-up screen. So if maximum/minimum pro-
tection limits were set to different values, (e.g, for BOP 36-28MG, current mode, no load, +V
Protect Max = 25V and –V Protect Min = 7V) when BIPOLAR is selected, the previous protec­tion values (+25, –7) will remain in place until a new value is entered in the Voltage Protection
field. When a new Voltage Protect setting, e.g., 22V, is entered with BIPOLAR mode selected,
+Voltage Protect is set to +22V and -Voltage Protect to –22V.

NOTE: The use of remote programming (via RS 232 or GPIB) automatically asserts Indepen-

dent protection limits. Once the unit is returned to local mode, the unit is automatically
returned to BIPOLAR mode.

BOP HIPWR 031912 3-15

3.3.3.2 UNDERSTANDING VOLTAGE AND CURRENT PROTECT LIMITS

These values are the references for the complementary channels: voltage in current mode and
current in voltage mode. The range for these values is between a minimum (box) value (see Fig­ure 1-3) and 1% above the rated nominal value (see PAR. 3.3.4.2). If the unit is in voltage mode,
it will enter current protect mode when the load demands more current and energy than permit­ted by the ±current protect settings. Similarly, if the unit is in current mode, it will enter voltage
protect mode if the load demands more voltage and energy than permitted by the ±voltage pro­tect settings. When the protect settings are exceeded, the protection channel limits the output, a
VPROTECT, CPROTECT or PROTECT (PROTECT may be seen only when external limits are
in use) message is displayed at the upper right of the LCD, and the power supply continues
operation.

3.3.3.3 HIDDEN VOLTAGE AND CURRENT PROTECT LIMITS

The BOP employs two back-up channels which function as safety backups if a main channel
fails. The backup channel limits are fixed and not user accessible. These limits are set to 5%
over the nominal (rated) values for voltage or current. If the software limits for a main channel is
changed (PAR. 3.3.4.1) the corresponding protect channel limit is automatically changed to be
5% of the nominal (rated) value above the user-programmed software limit.

3.3.4 CHANGING MAXIMUM OR MINIMUM SOFTWARE-CONTROLLED LIMITS

The maximum or minimum allowable voltage and current settings of the unit can be reduced
from the nominal using the Max/Min Settings menu (Table 3-5). which lists the system’s soft­ware-controlled voltage and current limits (+Voltage Max, –Voltage Min, +Current Max, –Current
Min) as well as the corresponding protection limits organized by operating mode. The default
values of the system limits are established by the Model: the nominal (rated) values for voltage
and current and 1.01 x the nominal (rated) values for protection. The default values can be
reduced by modifying the highlighted parameter. The unit will not accept local or remote com­mands that exceed the system limits. The system limits are always in effect, even when the unit
is controlled by an external reference. If system limits are changed, the protection limits
must be changed to correspond to the new system limits. As an example, changing +Volt­age Max and –Voltage Min of a BOP 36-28MG to ±3V, respectively, causes the unit to behave
as if it was a BOP 3-28MG. In this case it is important to change the +V Protect Max and –V Pro­tect Min limits (e.g., to ±3.3V, respectively) so that the load is protected when operating in Cur­rent Mode. System limits are absolute values (do not use minus sign for negative limits).

The internal parameters +Current Protect Min and –Current Protect Max are displayed to com­pletely define the permissible window when operating in Voltage mode. Similarly, +Voltage Pro­tect Min, and –Voltage Protect Max are displayed to completely define the permissible window
for voltage when operating in Current mode.

3-16 BOP HIPWR 031912

TABLE 3-5. MAX/MIN SETTINGS MENU

SETTING

Protect Entry BIPOLAR

+Voltage Max (value)

–Voltage Min (value)

+C Protect Max (value) model specific

+C Protect Min (internal value)

–C Protect Max (internal value)

–C Protect Min (value) model specific

+Current Max (value)

–Current Min (value)

+V Protect Max (value)

+V Protect Min (internal value)

–V Protect Max (internal value)

–V Protect Min (value)

NOTE: To restore all Max/Min settings defaults, press

press
saving for power-up) and exit.

up to Iomax + 1% of Iomax

up to Iomax + 1% of Iomax

@ to restore defaults shown above in BOLD. Press $ to save for power-up or % to apply the changes (without

CHOICES

(BOLD = Factory Default)

INDEPENDENT

+Eomax

–Eomax

Not Adjustable

Not Adjustable

+Iomax

–Iomax

Eomax +1% of Eomax

Not Adjustable

Not Adjustable

Eomax + 1% of Eomax

BIPOLAR - Causes a single protection limit value (one for voltage, one for cur­rent) to apply to both ± limits. Only one value is displayed and edited from the
front panel. (see PAR. 3.3.3.1.)
INDEPENDENT - Allows + and – protection limits to be set independently. from
the front panel (see PAR. 3.3.3.1 for considerations when using remote mode).

Defines the maximum voltage level that can be set in voltage mode. Default =
Rated +Output voltage (e.g., for BOP 36-28MG, Eomax = 36). To modify, see
PAR. 3.3.4.1.

Defines the minimum (maximum negative) voltage level that can be set in volt­age mode. Default = Rated –Output voltage (e.g., for BOP 36-28MG, Eomax =

36). To modify, see PAR. 3.3.4.1.

Defines the maximum value for +Current Protect. To modify refer to 3.3.4.1.

Defines the minimum value that +Current Protect can be set to. This is a calcu­lated value and is not adjustable from the front panel.

Defines the maximum (minimum negative) value that –Current Protect can be
set to. This is a calculated value and is not adjustable from the front panel.

Defines the minimum (maximum negative) value for –Current Protect. To modify
refer to 3.3.4.1.

Defines the maximum current level that can be set in current mode. Default =
Rated +Output current (e.g., for BOP 36-28MG, Iomax = 28). To modify, see
PAR. 3.3.4.1.

Defines the minimum (maximum negative) current level that can be set in current
mode. Default = Rated –Output current (e.g., for BOP 36-28MG, Iomax = 28). To
modify, see PAR. 3.3.4.1.

Defines the maximum value that +Voltage Protect can be set to. To modify refer
to 3.3.4.1.

Defines the minimum value that +Voltage Protect can be set to. This is a calcu­lated value and is not adjustable from the front panel.

Defines the maximum (minimum negative) value that –Voltage Protect can be
set to. This is a calculated value and is not adjustable from the front panel.

Defines the minimum (maximum negative) value for –Voltage Protect. To modify
refer to 3.3.4.1.

FUNCTION

VOLTAGE MODE

CURRENT MODE

% from the power-up screen, highlight Max/Min settings, press !, then

3.3.4.1 CHANGING MAXIMUM ACCEPTED VOLTAGE OR CURRENT (MAIN CHANNEL SOFT­WARE LIMITS)

The software limits for the main channels (+Voltage Max, –Voltage Min, +Current Max and –
Current Min) are the maximum (positive) and minimum (Maximum negative) values allowable
for voltage and current. The default software limits are determined by the model: the nominal
(rated) values for voltage and current (e.g., 36V and 28A for the BOP 36-28MG). These four
values can be adjusted independently. For example, a BOP 36-28MG, capable of delivering
±36V in voltage mode can be configured to allow voltage to be adjusted only from –1V to
+15V by setting –Voltage Min to –1 and +Voltage Max to +15. Similarly, a BOP 36-28MG,

BOP HIPWR 031912 3-17

capable of delivering ±28A in current mode can be configured to allow current to be adjusted
from –0.5A to +10A by setting –Current Min to –0.5 and +Voltage Max to +10. Adjustment
range is between 0 and E
ware limits are not the same as the Protect Limits described in PAR. 3.3.4.2.

The main channel software limit values can be lowered (closer to zero) by the user, e.g., to pre­vent inadvertent damage to a specific circuit under test. When the maximum/minimum values
are lowered, the unit will not accept values that exceed the new software limits. If the user
attempts to enter a value that exceeds the software limit, the unit will continue to function. in
local mode the Exceeding Maximum Allowed Value message is displayed, and the output
will be clamped to the main channel software limit (maximum/minimum) value. In remote mode
the command is considered invalid and is disregarded: a 120 error is produced and the mes­sage Voltage Out of Range or Current Out of Range is displayed on the front panel.

The main channel software limits are always in effect, even when the unit is controlled by an
external reference. If main channel software limits are changed from the default, the pro-

tection limits must be changed to correspond to the new software limits (see PAR.

3.3.4.2). As an example, changing +Voltage Max and –Voltage Min of a BOP 36-28MG to ±3V,

respectively, causes the unit to behave as if it was a BOP 3-28MG. In this case it is important to
change the +V Protect Max and –V Protect Min limits (e.g., to ±3.3V, respectively) so that the
load is protected when operating in Current Mode.

for voltage and 0 and I

Onom

for current. Note that these soft-

Onom

1. Press
Max/Min Settings.

2. Press
is required, see PAR. 3.2.4.4 for instructions.)

3. Highlight the voltage or current max/min value and press
are absolute values (do not use minus sign for negative limits). Use number keys to change
the setting, then

4. When complete, press
(without saving for power-up) and exit.

5. Upon return to the power-up screen, the main channel (voltage or current) is compared
against the main channel limits in effect. If the main channel exceeds the limit, it is set to
zero.

3.3.4.2 CHANGING MAXIMUM/MINIMUM PROTECTION SOFTWARE-CONTROLLED LIMITS

The ± protection limits are software limits that establish the maximum and minimum (maximum
negative) allowable levels of output voltage in current mode and current in voltage mode. The
default protection limits are 1% above E

The protect channel limits are +V (voltage) Protect max, –V Protect min, +C (current) Protect
Max and –C Protect min (see Table 3-4); these prevent the unit from delivering voltage or cur­rent that exceed these settings. In voltage mode the current protect channel is clamped to the
limit value; in current mode the voltage protect channel is clamped to the limit value. Adjustment
range is between a minimum (box) value (see Figure 1-3) and 1% above the nominal (rated)
value.

% from the power-up screen to enter the General Setup menu, then highlight

! to enter the Max/Min Settings submenu (Figure 3-7 and Table 3-5). (If a Password

! to change it. Software limits

$ to save.

$ to save for power-up, # to abort, or % to apply the changes

Omax or

1% above I

Omax

.

3-18 BOP HIPWR 031912

CAUTION: WHEN WORKING WITH ACTIVE LOADS, ALWAYS ADJUST THE BOP PRO-

TECTION LIMITS TO BE ABOVE THE MAXIMUM VALUES OF VOLTAGE OR
CURRENT EXPECTED FROM THE LOAD. FOR EXAMPLE, WHEN THE BOP IS
OPERATING IN VOLTAGE MODE SINKING ENERGY FROM A CONSTANT
CURRENT TYPE LOAD, SET THE CURRENT PROTECTION LIMITS OF THE
BOP ABOVE THE MAXIMUM CURRENT EXPECTED FROM THE LOAD.

1. Press
Max/Min Settings and press
instructions.)

2. Highlight the ±CPROTECT or ±VPROTECT max/min value and press
ware limits are absolute values (do not use minus sign for negative limits). Use number keys
to change the setting. Press

3. When complete, press
(without saving for power-up) and exit.

4. Upon return to the power-up screen, the new protection limit (voltage or current) is com­pared against the protection limits in effect. If the new protection limit setting is below the
existing setting for the protection limit, the protection channel (voltage or current) is set to
zero.

3.3.4.3 EXTERNAL LIMITS

These limits are external analog signals which are converted within the BOP to digital signals
that program the protection channels only: current protect in voltage mode and voltage protect
in current mode. The range of each analog input signal is +1V to +10V, corresponding to a
range for clamping the output between minimum, 10% of nominal (positive and negative), to
+max/–min of nominal rating. Refer to PAR. 3.4.4 for details on implementing external limits.

Table 3-4 explains the effect that these limits have in both voltage and current mode, and refer­ences the corresponding paragraph for changing the parameter in either local or remote mode.

% from the power-up screen to enter the General Setup menu, then highlight

! to view. (If a Password is required, see PAR. 3.2.4.4 for

! to change it. Soft-

$ to save, or % to abort.

$ to save for power-up, or # to abort, or % to apply the changes

3.3.5 ENABLING/DISABLING DC OUTPUT POWER

The BOP output can be disabled (OFF) or enabled (ON) by toggling the STANDBY key in local
mode or sending the SCPI OUTPut ON or OUTPut OFF command (see PAR. B.13) via the
selected digital remote control bus (see PAR. 3.5). The behavior of the unit when disabled
depends on the Load Type setting (see PAR. 3.3.6 and Table 3-6 for details).

BOP HIPWR 031912 3-19

3.3.6 DETERMINING HOW THE UNIT RESPONDS WHEN OUTPUT IS OFF (LOAD TYPE)

TABLE 3-6. POWER SUPPLY BEHAVIOR WHEN OUTPUT IS SET TO OFF

LOAD TYPE

SETTING

ACTIVE

RESISTIVE

BATTERY

If unit was in Voltage Mode when output OFF

command issued.

• Unit remains in voltage mode.

• Voltage set to zero.

• Both ± Current Protect set to maximum.

• Both ± Voltage Limit remain at maximum.

• Unit remains in voltage mode.

• Voltage set to zero.

• Both ± Current Protect set to minimum box values.

• Both ± Voltage Limit. remain at maximum.

• Unit set to current mode.

• Current set to zero.

• Both ± Voltage Protect. remain at maximum.

• Both ± Current Limit set to maximum.

If unit was in Current Mode when output OFF

command issued.

• Unit set to voltage mode.

• Voltage set to zero.

• Both ± Current Protect remain at maximum.

• Both ± Voltage Limit set to maximum.

• Unit remains in current mode.

• Current set to zero.

• Both ± Current Protect set to minimum box values.

• Both ± Voltage Limit set to maximum,

• Unit remains in current mode,

• Current set to zero.

• Both ± Voltage Protect set to maximum.

• Both ± Current Limit remain at maximum.

The BOP supports three Load Type selections (see Table 3-6) which determine how the power
supply responds when the output is off: ACTIVE, RESISTIVE and BATTERY. (Load type CUS­TOM (not normally active) permits customized settings to be implemented; for details contact
consult factory.) These selections are designed to provide proper operation with different load
types. It is important to note that the Load Type selection does not affect the settings of the
power supply for ON state; it only affects the main internal reference level and the protection
levels during the OFF state.

WARNING

For inductive loads, and especially superconducting magnet type
loads, the inherent offset of the BOP in the OFF state may generate sig­nificant current in the circuit. A properly rated switch in parallel with a
resistor must be connected between the power supply and the load.
The switch must be open and the BOP front panel LCD must read 0V,
0A before removing or installing connections between BOP and load.

ACTIVE. Active mode (default setting) is necessary for the power supply to function properly

and safely with inductive loads and constant-current-type active electronic loads. Active mode
can also be used with resistive loads. Table 3-6 indicates how the power supply responds to a
command to go from Output ON to OFF. When the output is disabled, the unit is set to voltage
mode, voltage is set to zero and both current protect and voltage limit are set to maximum.
When the unit is enabled, the pre-existing settings for voltage, current protect and voltage limit
are restored.

WARNING

For both inductive loads and constant-current-type active electronic
loads when the BOP output is set to OFF, a path is provided for absorb­ing either the energy accumulated in the reactance of the load during
the ON state, or energy delivered by an electronic load. This prevents
damage to the load and power supply as well as providing safety for
the user. However, In addition to the built-in safety features, constant­current-type active electronic loads must be adjusted to zero and the
BOP front panel LCD must read 0V, minimum current, before handling
the power supply-to-load connections.

3-20 BOP HIPWR 031912

RESISTIVE. This mode, as the name suggests, is useful for resistive loads. Table 3-6 indicates
how the power supply responds to a command to go from Output ON to OFF.

WARNING

Accessing the BOP after the output is disabled in BATTERY mode is
hazardous because (1) high current arcing is possible and (2) either the
external battery voltage, or the voltage (±Voltage Protection max) on
the BOP output terminals may be dangerous. Therefore, for battery and
constant-voltage-type active electronic loads it is recommended that
two properly rated external switches be installed for safety: one in
series with the battery, and one across the BOP output. After the unit is
set to OFF, first open the switch in series with the battery, then close
the switch across the BOP output to ensure safety before handling
BOP connections. When connecting the battery, the switch across the
output should be opened after the connections are complete and then
the switch in series with the battery should be closed. If the constant­voltage-type active electronic load is adjusted to zero before handling
the power supply-to-load connections, only the switch across the BOP
output is required.

BATTERY. This mode is necessary for the power supply to function properly and safely with

either battery or constant-voltage-type active electronic loads. This mode prevents the battery
from discharging during the OFF state. When the output is disabled (set to OFF), the BOP will
go to current mode, current will be set to zero, with voltage protect and current limit set to maxi­mum. In this way the battery will not be discharged while the output is OFF. For constant-volt­age-type active electronic loads this mode stops energy flow during the OFF state. Table 3-6
indicates how the power supply responds to a command to go from Output ON to OFF.

To configure, press
modify. (If a Password is required, see PAR. 3.2.4.4 for instructions.) Highlight Active, Resistive
or Battery (see explanations and associated WARNINGS above) and press
press

$ to save for power-up, # to abort, or % to apply the changes (without saving for

power-up) and exit. After configuring, the new setting will be effective when the power supply
goes from output on to output off.

To restore factory default (Active), press
press

!, then press @ to restore default. Press $ to save for power-up or % to exit

3.3.7 CHANGING THE DEFAULT POWER UP SETTINGS

When the BOP is shipped, the following default settings are programmed to be in effect each
time the unit is turned on, however these defaults may be changed as indicated below;

• Mode: Voltage (may be voltage or current, see PARs. 3.3.2 and 3.4.2. Table 3-7 illus­trates the relationship between Mode, Main Channel, Protection Type and Levels set­tings.

• Main Channel: Internal (may be Internal, External, or External Reference Level, PARs.
and 3.4.3).

• Protection type: Internal (may be Internal, External, Lesser Limit) (see PARs. and 3.4.4)

• Levels, Voltage and Current: maximum (see PAR. 3.4.4) Represents the power-up val-

BOP HIPWR 031912 3-21

% from the power-up screen, then highlight Load Type and press ! to

$ to save. Then

% from the power-up screen, highlight Load Type,

ues for protection limit channels (bipolar limits), voltage for current mode and current for
voltage mode. Table 3-7 illustrates the relationship between Mode, Main Channel, Pro­tection Type and Levels settings.

• Output: on (may be on or off) (see PAR. 3.3.5)

To change the default settings refer to the applicable paragraph(s) specified above as needed,
then from the power-up screen press
word is required, see PAR. 3.2.4.4 for instructions.) Highlight the parameter and press
modify. Use

Y, U or the ADJUST control to highlight a selection, then press $ to save. To

change a value use the number keys to enter new setting, then
settings have been configured, press

%. Highlight Power-up Settings and press !. (If a Pass-

! to

$ to save. When all power-up

$ to save for power up or % to exit and abort the

change.

To change the power-up default settings to use different positive and negative limits, first set the
bipolar levels as described above. Then refer to PAR. 3.3.3.1 and set the independent limits as
desired. When complete, press

$ to save for power-up.

To restore the factory default power-up settings listed above, from the power-up screen press

%. Highlight Power-up Settings and press !. Then press @ to restore the defaults. Then

press

$ to save for power up or % to exit and abort the change.

These settings can be directly applied to a load upon power-up. Many other configurable set­tings can be saved for power up using the

$ key after modifying the setting

TABLE 3-7. EXAMPLES SHOWING HOW POWER-UP SETTINGS FUNCTION

Mode

Voltage Internal Internal

Current Internal Internal

Voltage

Current

Voltage Internal

Current Internal

Main

Channel

External

or

ExtRefLvl

External

or

ExtRefLvl

Protection

Typ e

Internal

Internal

External

or Lesser

Limit

External

or Lesser

Limit

Levels

Voltage: 10
Current: 25

Voltage: 10
Current: 25

Voltage: 10
Current: 25

Voltage: 10
Current: 25

Voltage: 10
Current: 25

Voltage: 10
Current: 25

Power-up condition (output ON)

(All referenced pins located on Analog I/O Port

see PAR. 3.4 and Figure 2-1)

Unit powers up in voltage mode, 0V, ±current protection set to 25A. Pressing
MODE changes mode to current, puts unit in standby: output to 0A, ±voltage
protection to power-up setting of 10V, output off and STANDBY indicator on.

Unit powers up in current mode, 0A, ±voltage protection set to 10V. Pressing
MODE changes mode to voltage, puts unit in standby: output to 0V, current
protection to power-up setting of 25A, output off and STANDBY indicator on.

Unit powers up in voltage mode, output voltage determined by Analog port,
pin 11 (see PAR. 3.4.3.1 for External, PAR. 3.4.3.2 for ExtRefLvl), ±current
protection set to 25A. Pressing MODE changes mode to current, puts unit in
standby, ±voltage protection to power-up setting of 10V. When output is on
(STANDBY indicator off), output current determined by pin 11.

Unit powers up in current mode, output current determined by Analog port,
pin 11 (see PAR. 3.4.3.1 for External, PAR. 3.4.3.2 for ExtRefLvl), ±voltage
protection set to 10V. Pressing MODE changes mode to voltage and puts unit
in standby, ±current protection to power-up setting of 25A. When output is on
(STANDBY indicator off), output voltage determined by pin 11.

Unit powers up in voltage mode, 0V, ±current protection determined by pins 5
and 13 (see PAR. 3.4.4 for External, PAR. 3.4.4.1 for Lesser Limit). Pressing
MODE changes mode to current, puts unit in standby. When output is on,
(STANDBY indicator off), ±voltage protection determined by, pins 6 and 14.

Unit powers up in Current mode, 0A, ±voltage protection determined by pins
6 and 14 (see PAR. 3.4.4 for External, PAR. 3.4.4.1 for Lesser Limit). Press­ing MODE changes mode to voltage, puts unit in standby. When output is on,
(STANDBY indicator off), output voltage is 0V, ±current protection deter­mined by, pins 5 and 13.

3-22 BOP HIPWR 031912

3.3.8 STORING/RECALLING POWER SUPPLY OUTPUT SETTINGS

The power supply settings (mode, main channel reference type and setting, protection limit type
and setting and output status) can be stored in one of 99 memory locations for later recall. This
feature is accessible from the front panel by pressing

! from the power-up screen to view the

Saved Settings screen (Figure 3-8). For a description of abbreviations used, refer to PAR.

3.3.8.1 To view previously saved settings refer to PAR 3.3.8.3. To save the power supply set­tings or modify previously saved settings refer to PAR. 3.3.8.3. To recall saved settings and
apply them to the output refer to PAR. 3.3.8.5.

3.3.8.1 UNDERSTANDING ABBREVIATIONS USED FOR SAVED SETTINGS

The parameters listed in Table 3-8 are displayed, followed by a listing of the first 20 memory
locations, displayed in two rows of ten. Use

T and R keys to display additional columns or

navigate to the desired location.

Locations that are not empty show an abbreviated representation of the saved settings. (To see
all the pertinent settings for a particular location, highlight the location, then press
to exit without modifying the settings.)

If either Voltage or Current mode were saved, the main channel setting is listed under the Main
heading followed by V (voltage) or A (current), followed by either f (Output OFF), n (Output ON).
If the reference type is ExtRefLvl (instead of Internal or External), the uppercase V or A is
replaced by lowercase v or a. The protection setting is listed under the Prot heading.

!; press %

TABLE 3-8. SAVE/RECALL MENU

PARAMETER

NOTE: DEFAULT values for empty cells are the settings of the unit at the time the save/recall menu is entered.

MODE VOLT

MAIN CHANNEL

REFERENCE

SETTING nn.nnn or

CHOICES

(BOLD = Factory Default)

CURRENT

EXTERNAL

INTERNAL

EXTERNAL

EXTL REF LVL

nnn.nnn

(model and parameter

dependent)

VOLT - Selects voltage mode. Voltage value determined by SETTING.
CURRENT - Selects current mode. Current value determined by SETTING.
EXTERNAL - Used for customized configuration where EXT VM/CM signal at pin
2 of I/O port controls mode; consult factory for details.

INTERNAL: Any external reference applied to the Analog I/O port pin 11 is ignored
and the internal reference established by SETTING field.
EXTERNAL: The internal reference is ignored, and the external reference applied
to the Analog I/O port pin 11 is used (see PAR. 3.4.3.1).
EXTL REF LVL: Allows the gain of the BOP to be established by the maximum
output voltage or current introduced by the SETTING field. (see PAR. 3.4.3.2).

Sets the active channel setting. E.g., if VOLT mode is selected, nnn.nnn is voltage
setting, if CURRENT mode is selected, nn.nnn is current setting. If EXTERNAL
mode is selected, SETTING is not available.

FUNCTION

BOP HIPWR 031912 3-23

PARAMETER

PROTECTION

MODE

POSITIVE nn.nnn or

NEGATIVE nn.nnn or

OUTPUT OFF

CHOICES

(BOLD = Factory Default)

INTERNAL

EXTERNAL

LESSER LIMIT

nnn.nnn

nnn.nnn

ON

If External mode was saved, the protection setting is followed by C, indicating that the mode
(voltage or current is Conditioned by the external signal applied to pin 2 of the Analog I/O Port
(see Table 2-10).

If the protection setting is followed by a minus sign (–) it indicates that the negative protection
value (displayed) is set larger (absolute value) than the positive protection value (not shown on
the list). Similarly, if the protection setting is followed by a plus sign (+) it indicates that the posi­tive protection value (displayed) is set larger than the negative protection value (not shown on
the list).

TABLE 3-8. SAVE/RECALL MENU (CONTINUED)

FUNCTION

INTERNAL - Allows limits to be controlled by POSITIVE and NEGATIVE values.
EXTERNAL: Allows limits to be controlled by analog signals applied to the analog
port (see PAR. 3.4.4).
LESSER LIMIT: Allows protect limit to be automatically selected from either 1) the
external analog voltage applied to the Analog I/O port or 2) the value set in the
POSITIVE and NEGATIVE fields. Whichever limit has a lower absolute value
(closest to zero) has effect (see PAR. 3.4.4).

This is the positive value for Voltage protect if CURRENT mode is selected, or the
positive value for Current protect if VOLTAGE mode is selected. If EXTERNAL
mode is selected, this field is not accessible.

This is the negative value for Voltage protect if CURRENT mode is selected, or the
negative value for Current protect if VOLTAGE mode is selected. If EXTERNAL
mode is selected, this field is not accessible.

OFF - Output disabled. The behavior of the unit when output is disabled depends
on the LOAD TYPE setting (see PAR.3.3.6).
ON - Output enabled.

If Main channel reference was saved as External, EXT is listed under the Main heading. In this
case the main channel reference uses the external voltage applied to pin 11 of the Analog I/O
Input Port (see Table 2-10).

If Protection type was saved as External, EXT is listed under the Prot heading. In this case the
protection settings are determined by the levels applied to the appropriate pins of the Analog I/O
Input Port (see Table 2-10). If the main channel is voltage, the protection settings are deter­mined by pin 5 (negative current protection) and pin 13 (positive current protection). If the main
channel is current, the protection settings are determined by pin 6 (negative voltage protection)
and pin 14 (positive voltage protection).

3.3.8.2 VIEWING SAVED SETTINGS

1. Pressing
sisting of a list of locations 1 through 20 arranged in two columns of 10 rows. Use

! from the power-up screen displays the Saved Setups screen (Figure 3-8) con-

T and R

keys to display additional columns. NOTE: Use the number keys as a shortcut, e.g., press­ing 4 immediately highlights location 41, showing the column with locations 41 through 50.

2. Use the
is highlighted, press

U and Y keys to highlight the desired memory location; When the desired location

!. The details of the parameters listed in Table 3-8 are displayed.

3.3.8.3 SAVING SETTINGS AND ERASING OR MODIFYING PREVIOUSLY SAVED SETTINGS

1. Press

! from the power-up screen to enter the Saved Setups screen (Figure 3-8).

3-24 BOP HIPWR 031912

VOLTAGE

0.0000 0.0000

FIGURE 3-8. SAVED SETUPS MENU

2. Use the U and Y keys to highlight the desired memory location; To erase a highlighted

memory location, press

#. The list will show erased locations as Empty.

CURRENT

VOLTAGE

SOURCE

3. Press

4. Once the details are displayed, use the

NOTE: If a value to be saved is beyond the range of the unit, the value saved will be limited to

5. Continue to modify parameters as described in step 4 above. When all parameters have

NOTE: If the message CHANGES NOT ALLOWED is displayed, the memory location has been

6. After the changes have been saved, the unit returns to the Saved Settings screen, where

3.3.8.4 COPYING PREVIOUSLY SAVED SETTINGS TO A NEW LOCATION

! to see the details stored in the highlighted location.

U and Y keys to highlight the desired parameter.

the maximum value. If the Mode is changed, the numerical values for the main and
protection channels must be revised accordingly.

• To modify the parameter, press
keypad to enter a numeric value, then press

• To exit without changing the parameter, press

been modified, press
changes.

remotely locked (see PAR. A.12 for details).

the saved settings can now be applied to the output by pressing

$ to save for power-up. Press % to exit without storing the

!. Highlight the desired choice from a list, or use the

$ to save, or % to abort.

%.

@.

1. Press

2. Use the

BOP HIPWR 031912 3-25

! from the power-up screen to enter the Saved Setups screen (Figure 3-8).

U and Y keys to highlight the location to be copied, then press $.

3. Highlight an Empty location and press $ to save to the highlighted location, or press % to

abort the copy.

3.3.8.5 APPLYING SAVED SETTINGS TO THE OUTPUT (RECALL)

1. Press

2. Use the

3.3.9 WAVEFORM GENERATION

3.3.9.1 PROTECTING THE LOAD WHEN ACCESSING WAVEFORMS

CAUTION: BEFORE PRESSING

1. Use the MODE key to set the operating mode of the unit (voltage or current) to correspond

2. Set the main channel to zero, and the protection channel to maximum. This ensures that the

3.3.9.2 WAVEFORM OVERVIEW

! from the power-up screen to enter the Save/Recall menu.

U and Y keys to highlight the desired memory location. When the desired location

is highlighted, press
the settings to the output. Refer to PAR. 3.3.8.3 to modify a setting before execution.

! to view the detailed settings before execution, or press @ to apply

@ TO ENTER THE SAVED WAVEFORM SCREEN FROM

THE POWER-UP SCREEN, PERFORM THE FOLLOWING STEPS TO AVOID
UNEXPECTED VOLTAGES OR CURRENTS FROM PREVIOUS SETTINGS
BEING BRIEFLY APPLIED TO THE LOAD WHEN THE WAVEFORM IS FIRST
EXECUTED.

with the mode of the waveform.

waveform will start from zero. Otherwise, between pressing STANDBY to turn the output on,
and pressing
supply will be applied to the load until the waveform starts executing.

$ to execute the waveform, the previously programmed settings of the power

After observing the precautions of PAR. 3.3.9.1, the Saved Waveforms screen (Figure 3-9) is
entered by pressing
viously saved will be displayed with the previously assigned names; waveforms that have been
erased will appear as Empty. Up to 16 separate local waveforms can be programmed and
stored from the front panel.

Each waveform has an identifying name, the operating mode (voltage or current), positive and
negative protection values, and the count (the number of times the complete waveform is to be
repeated). Setting the count to zero allows the waveform to repeat continuously.

A waveform is comprised of at least one, or as many as 10 segments. Each segment has an
individually specified value for Type, Frequency or Period, Amplitude, Offset, Start angle, Stop
angle, and Initial/Repeat; see Table 3-11 for details. Refer to PAR. 3.3.9.4 to view a previously
saved waveform, PAR. 3.3.9.6 to execute a previously saved waveform, PAR. 3.3.9.7 to modify
a previously saved waveform, PAR. 3.3.9.8 to create a new waveform and PAR. 3.3.9.9 for an
example with detailed instructions on how to create a complex waveform.

@ from the power-up screen (Figure 3-3). Waveforms that have been pre-

3-26 BOP HIPWR 031912

VOLTAGE

CURRENT

0.0000 0.0000

FIGURE 3-9. SAVED WAVEFORMS MENU

3.3.9.3 UNDERSTANDING HOW WAVEFORMS ARE GENERATED

Waveform are generated by the BOP by producing a series of discrete output levels (points) in a
prescribed pattern. In the case of sine, triangle and ramps, this produces an output that con­forms to an approximation of the selected waveform type. The number of points available for a
waveform is limited to 3933 for all segments. Since there are a finite number of points, the lower
the frequency, the more points used, and the smoother the output waveform will appear. As the
frequency increases, fewer points are available for each cycle and the resulting waveform may
appear somewhat more jagged. Tables 3-9 and 3-10 list the number of points used for each fre­quency range of sine, triangle and ramp waveforms and for square waveforms, respectively.
Levels use a maximum of 60 points.

VOLTAGE

SOURCE

This means that a waveform consisting of a single sinewave segment at 0.1 Hz will use all 3840
points to generate each cycle, while a sinewave at 440 Hz will use 24 points for each cycle.
Note that a single segment between 0.01Hz and 1.8Hz uses all available points, so subsequent
segments will not be accepted. Four segments of 10Hz will be acceptable, while five segments
at 10 Hz will not be accepted. Reducing the segment by using the start and stop angle will also
reduce the number of points used.

Each time a segment is added, the waveform is validated. When a segment is added that
causes the point total to exceed 3933, three asterisks *** will appear to the left of the segment,
and the error message “LIST TOO SMALL” will be displayed briefly. This can be corrected by
either reducing the number of segments, or increasing the frequency of the existing segments
until the point total is acceptable.

BOP HIPWR 031912 3-27

TABLE 3-9. SINE, TRIANGLE AND RAMP WAVEFORM FREQUENCY VS. POINTS

Frequency

(See Notes 1, 2, and 3)

From To From To

4

0.01Hz

2.71Hz 3.6Hz 2880 66.6Hz 88.7Hz 120

3.71Hz 5.5Hz 1920 88.8Hz 118.3Hz 90

5.6Hz 8.3Hz 1280 118.4Hz 147.9Hz 72

8.4Hz 11.0Hz 960 148Hz 177.4Hz 60

11.1Hz 14.7Hz 720 177.5Hz 221.8Hz 48

14.8Hz 22.1Hz 480 221.9Hz 295.8Hz 36

22.2Hz 33.2Hz 320 295.81Hz 354.9Hz 30

33.3Hz 44.3Hz 240 355.9Hz 443.7Hz 24 (See Note 2)

44.4Hz 55.4Hz 192 443.8z 532Hz 20 (See Note 3)

NOTES: 1. As the frequency varies within the range, the time interval per point varies proportionately.

2. Sine and Triangle segments can not exceed 443Hz.

3. Ramp segments can not exceed 532Hz.

4. 0.001 for sine and triangle.

2.7Hz 3840 55.5Hz 66.5Hz 160

Total Points

Frequency

(See Notes 1, 2, and 3)

Tot a l Points

TABLE 3-10. SQUARE WAVEFORM FREQUENCY VS. POINTS

Frequency

(See Note 1)

From To From To

0.02Hz 1.8Hz 3840 43.51Hz 58.0Hz 120

1.81Hz 2.7Hz 2880 58.01Hz 72.5Hz 90

2.71Hz 4.0Hz 1920 72.51Hz 87.0Hz 72

4.01 5.4Hz 1280 87.01Hz 108.7Hz 60

5.41 7.2Hz 960 108.71Hz 145.0Hz 48

7.21Hz 10.8Hz 720 145.2.9Hz 174.0Hz 36

10.81 16.3Hz 480 174.1Hz 217.5Hz 30

16.31Hz 21.7Hz 320 217.6Hz 261.0Hz 24

21.71Hz 27.1Hz 240 261.1Hz 435.0Hz 20

27.11Hz 32.6Hz 192 435Hz 652.5Hz 12

55.5Hz 66.5Hz 160 653 1000 10

NOTE: 1. As the frequency varies within the range, the time interval per point varies proportionately.

Total Points

Frequency

(See Notes 1)

Tot a l Points

3.3.9.4 WAVEFORM SPECIFICATIONS

Refer to Table 1-2 for specifications applicable to waveforms created either locally, using the
BOP front panel (Local) or remotely from a host computer, using LIST commands (Remote). Dif­ferences between local and remote operation are highlighted.

3-28 BOP HIPWR 031912

3.3.9.5 VIEWING STORED WAVEFORMS

After observing the precautions of PAR. 3.3.9.1, press
the Saved Waveforms screen (Figure 3-9). Use
a previously saved waveform, then press
3-10). The lower half of the LCD shows a representation of the programmed waveform. The let­ters along the vertical axis of the graph at the lower left side indicate whether the waveform is
programmed to operate in voltage or current mode. The message at the upper right indicates
the actual mode of the power supply while the waveform is being executed. The upper half pres­ents the waveform name, positive and negative protection settings, the repetition count, fol­lowed by a listing of segments. The type (square, sine, etc.), frequency, p-p amplitude, and
whether the segment is initial (run only the first time) or repeating is indicated by I or R, respec­tively. To see the offset, start/stop angle, initial/repeat for a segment, use
encoder to highlight the segment, then press
ment, since the last segment must repeat). Use use

Y or U or the encoder to highlight the name of

! to view the Waveform Settings screen (see Figure

! (Initial/Repeat is not available for the last seg-

@ from the power-up screen to access

Y or U or the

Y or U to highlight the parameter, press

!, then set the value or highlight the desired setting and press $ to save for power-up or %

to abort and exit without changing the parameter.

VOLTAGE

SOURCE

3.3.9.6 EXECUTING A WAVEFORM

After observing the precautions of PAR. 3.3.9.1, press
the Saved Waveforms screen (Figure 3-9). Highlight one of the stored waveforms, then press

!. If the unit is in Standby, press the STANDBY key to turn the output on, then press $ to

execute the waveform.

To stop execution, press
and leave the BOP in one of three states. Standby - the output will be off (STANDBY indicator
on). At the current point of the wave form. The BOP output will be at some random point in the
programmed waveform. The BOP will complete the waveform cycle and leave the output at the
last point of the waveform. This is chosen using the display menu see Table 3-3.

BOP HIPWR 031912 3-29

FIGURE 3-10. WAVEFORM SETTINGS MENU

@ from the power-up screen to enter

%. This stops waveform execution. The unit will stop the waveform

To change the Waveform Stop setting, press # from the power-up screen (Figure 3-3), High­light Waveform Stop, press
Press

$ exit and save for power-up or % to apply the changes (without saving for power-up)

and exit.

While the waveform is executing, the display shows a graphic of the programmed waveform
(repeating segments only) below the message Waveform Executing.

Be sure that output power is OFF (Standby indicator lit) while connect­ing monitoring device. Be sure that connections are secure and that
terminals are not inadvertently shorted.

It is recommended that an oscilloscope be used to view the actual output. Connect the oscillo­scope across OUT S and COM S terminals of the rear panel terminal block to monitor the output
at the load, or between OUT MON and COM MON to monitor the BOP output at the BOP (see
Figure 2-1).

3.3.9.7 MODIFYING PREVIOUSLY STORED WAVEFORMS

To edit a previously stored waveform, first observe the precautions of PAR. 3.3.9.1, then view
the waveform and highlight the segment to edit as specified in PAR. 3.3.9.4. (The operating
mode can not be edited; to change from a voltage waveform to a current waveform, refer to
PAR. 3.3.9.8 to start a new waveform.)

!, highlight Standby, Last Level or Current Lvl, then $ to save.

WARNING

Use

Y or U or ADJUST to highlight the segment, then press ! to edit,

When editing a segment, a submenu showing the parameters for that segment will open (see
Table 3-11). Use
change the parameter, then press
p or

% to abort and exit without saving the segment parameters that were edited.

To delete a segment, highlight the segment at the Waveform Settings screen (Figure 3-10), the
press

#, to permanently erase the segment. This change is saved immediately and can not be

undone.

To add a segment, at the Waveform Settings screen (Figure 3-10) highlight the segment follow­ing the one to be added (e.g., if there are three existing segments (1, 2, 3), to add a segment
between 2 and 3, highlight 3. To add a segment following 3, highlight End of Segments. After
highlighting the segment, press
waveform type selected (see Table 3-11 for details) can then be modified as desired.

3.3.9.8 CREATING A NEW WAVEFORM

1. After observing the precautions of PAR. 3.3.9.1, press
the Saved Waveforms screen (Figure 3-9), highlight one of the waveforms designated
Empty, then press

2. Assign a name to the waveform: highlight Name, press
using the

3.2.4.2 for details). Press

Y or U or the encoder to highlight the parameter, then press ! to edit,

@ to insert a new segment. The parameters applicable to the

@. The Waveform Settings screen (Figure 3-10) opens.

Y or U keys or ADJUST or the multiple presses of the numeric keys (see PAR.

$ to save or % to abort.the change and exit.

$ to save or % to abort. Then press $ to save for power

@ from the power-up screen to enter

! to modify, change the name

3-30 BOP HIPWR 031912

TABLE 3-11. WAVEFORM SEGMENT DETAILS MENU

SETTING CHOICES FUNCTION

Type Square

Frequency (Hz) or
Period (Sec) for Level
only

Amplitude (P to P) xxx.xxx

Offset xxx.xxx

Start Angle
(Sine or Triangle only)

Stop Angle
(Sine or Triangle only)

Initial/ Repeat Repeating

NOTES

1. All waveforms except Level are centered on the offset. E.g. for a BOP 100-10MG, a positive ramp of 100V p-p amplitude, 10V
offset, will start at -40V and increase to +60V over the time period (T) determined by the frequency (F): T = 1/F.

2. When starting a new waveform, the first segment is always a repeating segment. One or more initial segments can be inserted
before the first repeating segment. Segments inserted before an initial segment are automatically set to initial; segments
inserted after a repeating segment are automatically set to repeating. It is recommended that the repeating segments be created
first. E.g. For a waveform with five segments, 1 and 2 designated Initial and 3, 4, and 5 designated Repeating, If the count was
set to 10, the first waveform would be comprised of segments 1 through 5, but the next nine waveforms would only have seg­ments 3, 4, and 5. This feature can be useful for establishing an initial delay or preconditioning the load prior to running the
repeating waveform.

3. If the internal memory space used to process a waveform segment is exceeded, *** is displayed to the left of the segment(s) in
error. This can be corrected by 1) increasing the frequency (the lower the frequency, the more memory is used), 2) reducing the
number of segments.

Pos Ramp

Neg Ram

Triangle

Sine

Level

Trigger

xxxx.xxx (Hz) or

xx.xxxx (Seconds)

(see Note 3)

(Volts or Amperes)

(Volts or Amperes)

xxx x

(degrees)

xxx x

(degrees)

Initial

Square - Square wave, bipolar, starts with positive excursion (see Note 1).
Pos Ramp - Increasing ramp, bipolar (see Note 1).
Neg Ramp - Decreasing ramp, bipolar (see Note 1).
Triangle - bipolar, starts with positive excursion, start/stop angle may be user con­trolled (see Note 1).
Sine - - bipolar, starts with positive excursion, start/stop angle may be user controlled
(see Note 1).
Level - value determined by offset., duration determined by Period.
Trigger - Determines whether high level, low level or high-to-low edge is required at
trigger port to allow waveform to continue. NOTE: Offset does not affect trigger, 0V off­set is recommended.

Square wave: 0.02 to 1000 Hz
Ramp: 0.02 to 532 Hz
Sine or Triangle:0.001 to 443 Hz
Level: Period in Seconds. 0.005 to 5.0000 Seconds

Peak to peak amplitude of segment. Volts or Amperes determined by mode selected
for waveform. Value within model rating acceptable (e.g., for BOP 100-10MG, maxi­mum amplitude is 200V). Values that exceed the maximum or minimum software limits
(see PAR. 3.3.4.2) are neither accepted nor executed.

DC level on which the waveform (centered) will ride or Amplitude for Level segments.
Volts or Amperes determined by mode selected for waveform. E.g. for BOP 100­10MG, to specify a positive ramp that goes from +30V to +80V, set amplitude to +50V
and offset to +55V. Since p-p amplitude of segment is centered on offset, it is possible
for the waveform to exceed the model ratings (e.g., for the BHK 100-10MG, if the
amplitude is set to 150V and the offset is -50V, the negative portion of the segment will
exceed the -100V maximum of the model). In this case the output is clamped to the
max/min software limit in effect (see PAR. 3.3.4.1). Values that exceed the maximum
or minimum software limits (see PAR. 3.3.4.2) are neither accepted nor executed.

The point at which the sine or triangle waveform segment starts. Values from 0.0° to

360.0° are acceptable. Default is 0.0°.

The point at which the sine or triangle waveform segment stops. Values from 0.0° to

360.0° acceptable. Default is 0.0° (functions the same as 360°).

Repeating - Segment is executed for each cycle specified by the Count (see Note 2).
Initial - Segment is executed only on the first count and skipped for all subsequent
counts. Useful for preconditioning applications (see Note 2).
All segments except the last may be set to Initial or Repeating. The last segment is
always Repeating

BOP HIPWR 031912 3-31

3. Refer to Table 3-12 and enter the desired settings for Mode, Positive and Negative Protec­tion and Count. These settings apply to all waveform segments. (Note that the setting for
mode cannot be changed once it has been saved; to change the mode, create a new wave­form.) For each parameter listed in Table 3-12 use
parameter, then press

! to edit, change the parameter, then press $ to save or % to

Y or U or ADJUST to highlight the

abort and exit.

TABLE 3-12. NEW WAVEFORM SETTINGS MENU

SETTING CHOICES FUNCTION

Name Alphanumeric characters

(10 characters max.)

(Name Assigned by User)

Mode VOLTAGE

CURRENT

Protection
Positive
Negative

Count 0-999 Determines how many times the waveform is to be repeated, except for seg-

Waveforms are assigned a number from 1 to 16. When a new waveform is
programmed, a name must be assigned so it can be easily recognized and
recalled. Up to16 waveforms can be stored from the front panel.

Determines the active mode for the waveform. This setting cannot be
changed once it has been saved. To change the mode, create a new wave­form and delete the existing waveform.

Assigns the positive and negative protect levels to be in effect while the wave­form is running. These levels apply to the complementary channel. (e.g., if the
Mode selected is voltage, the complementary channel is the current channel.

ments marked Initial, which are only executed once. To repeat the waveform
indefinitely, set the count to 0

4. Refer to Table 3-11 and enter the parameters for the first segment: Type, Frequency, Ampli­tude (p-p) and Offset. For each parameter use
parameter, then press

! to edit, change the parameter, then press $ to save or % to

Y or U or the encoder to highlight the

abort and exit.

5. When segment is complete, press

$ to save for power up. Continue to add segments as

desired.

NOTE: When the first segment is added, start/stop angle is not accessible, however this can

be modified once the segment has been added.

6. When adding a new segment, the parameters of the highlighted segment are copied. It is
not possible to move or copy a segment to another location. Refer to Table 3-11, Note 2 for
details about initial vs. repeating segments. Refer to PAR. 3.3.9.9 for a detailed example of
how to add segments to build a complex waveform.

3.3.9.9 USING SEGMENTS TO BUILD A WAVEFORM

The following steps provide detailed instructions to illustrate how a complex waveform, illus­trated in Figure 3-11, may be created by building segments. Refer to PAR. 3.2.4 for details on
changing parameters if needed.

1. After observing the precautions of PAR. 3.3.9.1, press
the Saved Waveforms screen (Figure 3-9), highlight a waveform designated Empty and
press

@ to create a new waveform.

@ from the power-up screen to enter

3-32 BOP HIPWR 031912

FIGURE 3-11. SAMPLE WAVEFORM

2. The initial waveform settings are displayed (see Table 3-11 and Table 3-12 for parameter
details. Use
to save the setting.

Name CAP CHARG
Mode VOLTAGE
Protection
Positive 10
Negative 10
Count 0
Segment
Type Neg Ramp
Frequency (Hz) 50
Amplitude (p-p) 4
Offset 8

! to modify the initial settings for the waveform. For each parameter, use $

When all settings are complete, press
ing negative ramp starting at +10V decreasing to +6V since it is a 4V p-p signal riding on an
8V offset. The frequency of 50 Hz establishes the time duration of 20 ms for the segment.

3. From the Waveform Settings screen, highlight segment NEG RAMP 50.0HZ 4.00 R and
press

@ to insert a new segment. Use ! to modify the following settings of the new seg-

ment. For each parameter, use

Type Level
Period (Sec) 0.002
Offset 0
Initial/Repeat Initial

When complete, press
executed only once at the beginning of the waveform.

BOP HIPWR 031912 3-33

$ to save for power-up. This step changes the 2ms, 0V level to be

$ to save the setting.

$ to save for power-up. This step creates a repeat-

4. From the Waveform Settings screen, highlight segment LEVEL 0.002s 0.00 I and press @
to insert a new segment. Use ! to modify the following settings of the new segment. For
each parameter, use

Type Level
Period (Sec) 0.001
Offset 1.5

$ to save the setting.

When all settings are complete, press
level of 1ms prior to the 0V level. This segment is automatically set to Initial since the previ­ous segment is set to Initial. The first two segments form a positive 2ms, pulse, delayed 1ms
from the start of execution. The pulse can be used for synchronizing an external monitoring
device.

5. From the Waveform Settings screen, highlight segment NEG RANP 50.0HZ 4.00 R and
press

@ to insert a new segment. Use ! to modify the following settings for the next seg-

ment. For each parameter, use

Type Sine
Frequency (Hz) 25
P to P Amplitude 20
Offset 0
Start angle 0.0
Stop angle 90.0
Initial/Repeat Initial

When all settings are complete, press
initial segment which is the first quadrant of a 20V p-p sine wave riding on a 0V offset. It
starts at 0V and rises to 10V (1/2 of 20) over 10 ms (1/4 of 40ms period established by 25Hz
frequency). This segment simulates the initial charging of a capacitor.

6. From the Waveform Settings screen, highlight End of Segments and press
next segment. Use
parameter, use

! to modify the following settings for the next segment. For each

$ to save the setting

$ to save the setting.

$ to save for power-up. This step creates a 1.5V

$ to save for power-up. This step creates another

@ to insert the

Type Sine
Frequency (Hz) 50
Amplitude (p-p) 8
Offset 6
Start angle 0.0
Stop angle 90.0

When all settings are complete, press
1/4 sine wave that starts at 6V and rises to 10V over 5 ms (1/4 of 20ms period established
by 50Hz frequency). The waveform shown in Figure 3-11 has now been saved. Note that by
careful calculation of period and start/stop angle, accurate waveform simulations can be
attained.

7. Either execute the completed waveform by pressing STANDBY (to turn the output on), then

$, or press % to return to the Saved Waveforms screen.

3.3.9.10 COPYING A WAVEFORM

After observing the precautions of PAR. 3.3.9.1, press
the Saved Waveforms screen (Figure 3-9). Highlight one of the stored waveforms, then press

3-34 BOP HIPWR 031912

$ to save for power-up. This step create a repeating

@ from the power-up screen to enter

$. Then highlight a waveform location designated Empty and press $ to save or % to abort

the change and exit. The copied waveform may then be modified and saved with a new name if
desired (see PAR. 3.3.9.7).

3.3.10 RESET

CAUTION: PRESSING RESET WILL CAUSE VOLTAGE TRANSIENTS TO APPEAR AT

THE OUTPUT WHICH MAY DAMAGE A CONNECTED LOAD. SWITCH IS
RECESSED TO PREVENT INADVERTENT ACTIVATION.

Pressing RESET causes the power supply to execute a complete power on sequence to reset
the power supply to the power up settings (see PAR. 3.3.7).

3.3.11 OPERATOR TESTING

The Test System submenu is entered by pressing
Revision/Test and press

!. Upon power-up all tests are flagged as Untested. Table 3-13 lists

the tests that can be run. Highlight the choice and press

% from the power-up screen, then highlight

# to run the selected test.

TABLE 3-13. REVISIONS/TEST MENU

SETTING

MAXIMUM OUTPUT

VOLTAGE XX

CURRENT YY

TEST

DISPLAY Status (see NOTE below) Automatic test, reports status messages (see NOTE below).

KEYPAD Status (see NOTE below) Requires depressing keys indicated on LCD.

INTER-

FACE

SERIAL Status (see NOTE below) Automatic test of serial port - requires installation of loop back test connector.

ANALOG Status (see NOTE below) Automatic test which does not affect unit output. Reports status messages

OUTPUT Status (see NOTE below) WARNING: DANGEROUS VOLTAGES ARE PRESENT AT THE OUTPUT

REVISIONS

DISPLAY

INTERFACE

ANALOG

NOTE: Test status is as follows:

UNTESTED Initial status when first entering menu.
TESTING Test is running.
PASSED Test was successful.
FAILED Test failed.
FAIL EXT SERIAL test failed - verify loop back connector installed (see PAR. 3.5.6.4).

CHOICES

(BOLD = Factory Default)

(Cannot be highlighted)

XX.0

YY.0

Status (see NOTE below) Automatic test, reports status messages (see NOTE below).

(Cannot be highlighted)

x.xx
y.y y
z.zz

Displays rated output voltage and current of power supply. including all slaves
connected in parallel or series.

This test requires pressing every key on the keypad, plus moving the
ADJUST control clockwise and counterclockwise, with the ADJUST control
depressed and released. As the keys and control function pass the tests, the
corresponding function on the LCD is highlighted. When the last test is suc­cessful, the LCD displays “passed.” The test must be completed within two
minutes, otherwise a “Failed” indication is displayed.

(see PAR. 3.5.6.4). Reports status messages (see NOTE below).

(see NOTE below).

TERMINALS: DO NOT TOUCH! DISCONNECT LOAD BEFORE RUNNING
THIS TEST. Output is automatically programmed to +

then to 0V. Test duration is less than 2 Seconds. Reports status messages
(see NOTE below).

Displays current firmware revision for display, interface and analog proces­sors.

FUNCTION

E

Onom

then –E

Onom

,

BOP HIPWR 031912 3-35

3.3.12 ERROR MESSAGE EXPLANATIONS

When a key press is not accepted, an error message is displayed at the bottom of the screen.
Although recovery from most operator errors is obvious and simple, Table 3-14 lists all the error
messages along with associated explanations as to why they occurred.

TABLE 3-14. ERROR MESSAGE EXPLANATIONS

ERROR MESSAGE EXPLANATION

General

Multiple Decimal places not supported Decimal key was pressed while to the right of the existing decimal point.

Exceeding Maximum Allowed Value To check maximums, go to power-up screen, press

%, highlight Max/Min Settings, press

!.

Sign does not affect Protection Limits Protection Limit field is positive or negative, numerical value does not need sign

Entry incomplete, Depress ENTER
key

Executing List A waveform is currently executing via remote mode. Commands to change the output are

Save Disabled, Request ignored Save Display Change is disabled. From power-up screen, press

EXTERNAL MODE enabled. MODE key does not function while Mode is being controlled externally. Press

F2 Key not valid F2 only works when labeled. key was probably pressed inadvertently.

Password incorrect Enter the correct password and press

F3 - Invalid

F4 - Invalid

Series or Parallel when not
STANDALONE

Calibration invalid - Multiple Unit Consult Factory.

BITBUS option must be Disabled Change CIIL mode to SCPI. From power-up screen press

External Reference Waveform not
accessible

External Mode - Waveform not
accessible

External Limits - Waveform not
accessible

Empty Entry - use F2 instead Empty location cannot be modified using

No Room to insert - delete a segment. No more than 10 segments are allowed in a waveform.

Unable to delete segment. Try again. If still unable to delete segment, contact factory. for RMA.

Only EDIT allowed on Entry. When viewing waveform, if name, count or protection levels are highlighted, press

MODE incorrect - Please Change A voltage waveform was executed while the unit was in current mode or a current

When changing either the main channel or the protect channel, using the number keys, the
change must be applied to the output by pressing ENTER before moving on to change the
other channel.

not accepted until list is stopped (send command VOLT:MODE FIXED).

%, highlight password

settings to enable.

$, high-

light External Mode and change to Disable.

!. If password has been lost and can not be

recovered, refer to PAR. 3.6.3.12.1 to reset to factory defaults.

Setup Menu

# only works when labeled. Key was probably press inadvertently.
$ only works when labeled. Key was probably press inadvertently.

Master/Slave Menu

Mismatch between Unit type and Connection type. Automatically reverts to
Unit type: Standalone, Connection Type: standalone.

% highlight Interface Data For-

mat, press
cycle BOP off, then on.

Reference Input must be set to Internal for waveforms to be executed. Press
Reference Input, press

External Mode must be disabled for waveforms to be executed. Press
nal Mode, press

Protection Limit must be set to Internal for waveforms to be executed. Press
Protection Limit, press

!, highlight SCPI, press $, then press $ to save for power-up, then

Waveform Menu

$ highlight

! highlight Internal, press $, then %.

$ highlight Exter-

! highlight Disable, press $, then %.

$ highlight

! highlight Internal, press $, then %.

! Press @ to start new waveform.

! to

modify the setting.

waveform was executed while the unit was in voltage mode. Press MODE key to change to
correct mode, press STANDBY key to set output on then press

@ and ! are not functional with these parameters.

$ to run the waveform

3-36 BOP HIPWR 031912