AMETEK SFA Series Ethernet Programming User Manual

SG Series IEEE

488.2/RS232 and

Ethernet Options

Programming Manual

M550129-03 Rev K www.programmablepower.com

About AMETEK

AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and
manufacture of precision, programmable power supplies for R&D, test and measurement, process control,
power bus simulation and power conditioning applications across diverse industrial segments. From bench
top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud
manufacturer of Elgar, Sorensen, California Instruments and Power Ten brand power supplies.

AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with
annualized sales of $2.5 billion. The Company has over 11,000 colleagues working at more than 80
manufacturing facilities and more than 80 sales and service centers in the United States and around the
world.

Trademarks

AMETEK is a registered trademark of AMETEK, Inc. Sorensen is a trademark owned by AMETEK, Inc. Other
trademarks, registered trademarks, and product names are the property of their respective owners and are
used herein for identification purposes only.

Notice of Copyright

SG Series IEEE 488.2/RS232 and Ethernet Options Programming Manual

Programmable Power, Inc. All rights reserved.

© 2004-2014 AMETEK

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER,
INC. (“AMETEK”):

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL

OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES,

WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE
OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE
ENTIRELY AT THE USER’S RISK, AND

(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH

STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY
CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT IS CONTAINED WITH THE ENGLISH
LANGUAGE VERSION, WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.

Date and Revision

December 2014 Revision K

Part Number

M550129-03

Contact Information

Telephone: [phone] (toll free in North America)
858 450 0085 (direct)

Fax: [phone]

Email: [e-mail]
[e-mail]

Web: www.programmablepower.com

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Hazardous voltages may be present when covers are removed. Qualified

The equipment used contains ESD sensitive parts. When installing

Important Safety Instructions

Before applying power to the system, verify that your product is configured properly for your particular
application.

WARNING

WARNING

Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform installation
and servicing.

Ensure that the AC power line ground is connected properly to the Power Rack input connector or chassis.
Similarly, other power ground lines including those to application and maintenance equipment must be
grounded properly for both personnel and equipment safety.

Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable.
In normal operation, the operator does not have access to hazardous voltages within the chassis. However,

depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY
may be normally generated on the output terminals. The customer/user must ensure that the output power lines
are labeled properly as to the safety hazards and that any inadvertent contact with hazardous voltages is
eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical
circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open
cover checks to avoid personal injury by any sudden component failure.

Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales
organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage
that results from improper use of the equipment and accessories.

personnel must use extreme caution when servicing this equipment. Circuit
boards, test points, and output voltages also may be floating above (below)
chassis ground.

equipment, follow ESD Safety Procedures. Electrostatic discharges might
cause damage to the equipment.

SAFETY SYMBOLS

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Product Family: SG Series IEEE 488.2/RS232 and Ethernet Options

Warranty Period: Five Years

WARRANTY TERMS

AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the Product stated
above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or workmanship
within the applicable warranty period stated above, then AMETEK may, at its option: repair or replace the
Product; or issue a credit note for the defective Product; or provide the Buyer with replacement parts for the
Product.

The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance with
the return procedure specified below. AMETEK will, at its expense, deliver the repaired or replaced Product
or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the Purchase
Order Agreement or where the Product or any part thereof:

is damaged by misuse, accident, negligence or failure to maintain the same as

specified or required by AMETEK;

is damaged by modifications, alterations or attachments thereto which are not

authorized by AMETEK;
is installed or operated contrary to the instructions of AMETEK;
is opened, modified or disassembled in any way without AMETEK’s consent; or
is used in combination with items, articles or materials not authorized by AMETEK.

The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer
has made all payments to AMETEK provided for in the Purchase Order Agreement.

PRODUCT RETURN PROCEDURE

1. Request a Return Material Authorization (RMA) number from the repair facility (must be done in

the country in which it was purchased):

In the USA, contact the AMETEK Repair Department prior to the return of the product

to AMETEK for repair:

Telephone: [phone], ext. 2295 or ext. 2463 (toll free North America)

858-450-0085, ext. 2295 or ext. 2463 (direct)
Outside the United States, contact the nearest Authorized Service Center (ASC). A

full listing can be found either through your local distributor or our website,

www.programmablepower.com, by clicking Support and going to the Service

Centers tab.

2. When requesting an RMA, have the following information ready:

Model number
Serial number
Description of the problem

NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.
NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to an

evaluation fee and applicable freight charges.

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CONTENTS

SECTION 1 OVERVIEW ....................................................................... 1-1

1.1 Introduction ..................................................................................................... 1-1

1.2 IEEE 488.2 GPIB and RS232 Options ............................................................ 1-1

1.3 Ethernet Option .............................................................................................. 1-1

SECTION 2 IEEE 488.2 GPIB/RS232 FEATURES, FUNCTIONS AND

SPECIFICATIONS ...................................................... 2-1

2.1 Introduction ..................................................................................................... 2-1

2.2 Features ......................................................................................................... 2-1

2.3 Programmable Functions ................................................................................ 2-1

2.4 Readback Functions ....................................................................................... 2-2

2.5 Specifications ................................................................................................. 2-2

2.5.1 Programming Resolution .................................................................. 2-2

2.5.2 Programming Accuracy .................................................................... 2-2

2.5.3 Readback Resolution ........................................................................ 2-2

2.5.4 Readback Accuracy .......................................................................... 2-2

SECTION 3 IEEE 488.2 GPIB/ RS232 CONFIGURATIONS AND REMOTE

PROGRAMMING ........................................................ 3-1

3.1 Rear Panel ..................................................................................................... 3-1

3.2 RS232 Setup Procedure ................................................................................. 3-3

3.3 IEEE 488.2 GPIB Setup Procedure ................................................................ 3-4

3.3.1 Configuration Switch ......................................................................... 3-5

3.3.2 Remote/Local Selection .................................................................... 3-6

3.3.3 Power-On GPIB Service Request (PON SRQ) Selection .................. 3-8

3.3.4 Shield Ground ................................................................................... 3-8

3.3.5 Address Selection ............................................................................. 3-8

3.4 Remote Programming Via RS232 ................................................................... 3-9

SECTION 4 ETHERNET INTERFACE FEATURES, FUNCTIONS AND

SPECIFICATIONS ...................................................... 4-1

4.1 Introduction ..................................................................................................... 4-1

4.1.1 Minimum System Requirements ....................................................... 4-1

4.2 Features and Functions .................................................................................. 4-2

4.2.1 Features ........................................................................................... 4-2

4.2.2 Programmable Functions .................................................................. 4-2

4.2.3 Readback Functions ......................................................................... 4-3

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4.3 Specifications ................................................................................................. 4-3

4.3.1 Ethernet/LAN Configuration .............................................................. 4-3

4.3.2 Ethernet Configuration Factory Defaults ........................................... 4-3

4.3.3 Programming Resolution .................................................................. 4-4

4.3.4 Programming Accuracy .................................................................... 4-4

4.3.5 Readback Resolution ....................................................................... 4-4

4.3.6 Readback Accuracy .......................................................................... 4-5

SECTION 5 ETHERNET CONFIGURATION AND REMOTE

PROGRAMMING ......................................................... 5-1

5.1 Rear Panel ..................................................................................................... 5-1

5.2 Ethernet Setup Procedure .............................................................................. 5-3

5.2.1 Network Setup Using DHCP ............................................................. 5-4

5.2.2 Network Setup Using Auto-IP ........................................................... 5-5

5.2.3 Network Setup Using the Serial COM Port ....................................... 5-6

5.2.4 Network Setup Using Web Browser .................................................. 5-7

5.2.5 Configuration Switch ......................................................................... 5-7

5.2.6 Remote/Local Selection .................................................................... 5-9

5.3 External User Control Signal Connector ....................................................... 5-10

5.4 Programming/Communication Via Ethernet .................................................. 5-13

5.4.1 Raw Socket Interface ..................................................................... 5-13

5.4.2 VXI-11 Protocol .............................................................................. 5-13

5.4.3 Web Server .................................................................................... 5-13

5.5 Ethernet Web Pages, Overview .................................................................... 5-14

5.5.1 HOME ............................................................................................ 5-16

5.5.2 IP CONFIGURATION ..................................................................... 5-17

5.5.3 SETTINGS ..................................................................................... 5-21

5.5.4 STATUS ......................................................................................... 5-24

5.5.5 POWER .......................................................................................... 5-26

5.5.6 PRESETS ...................................................................................... 5-28

5.5.7 SECURITY ..................................................................................... 5-30

SECTION 6 IEEE 488.2 GPIB/RS232/ETHERNET AND SCPI COMMAND

OPERATION ............................................................... 6-1

6.1 Introduction .................................................................................................... 6-1

6.2 Register Definitions ........................................................................................ 6-1

6.2.1 SCPI Status Byte .............................................................................. 6-1

6.2.2 Standard Event Status Register (ESR) ............................................. 6-3

6.2.3 Protection Condition and Protection Event Status Register .............. 6-3

6.2.4 Operation Status and Questionable Status Registers ....................... 6-5

6.2.5 Error/Event Queue............................................................................ 6-5

6.2.6 Serial Poll Operation ......................................................................... 6-8

6.3 Ethernet LXI™, VXI-11, and SCPI Conformance Information ......................... 6-8

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6.3.1 Parameter Definitions ....................................................................... 6-8

6.3.2 Units ................................................................................................. 6-9

6.3.3 Conventions...................................................................................... 6-9

6.3.4 Queries ............................................................................................. 6-9

6.4 IEEE 488.2 Common Command Subsystem ................................................ 6-10

6.5 SOURCE SCPI Command Subsystem ......................................................... 6-12

6.5.1 SOURCE SCPI Command Summary.............................................. 6-12

6.5.2 SOURCE SCPI Command Reference ............................................ 6-13

6.5.3 RAMP FUNCTION .......................................................................... 6-16

6.6 MEASURE SCPI Command Subsystem ....................................................... 6-17

6.6.1 MEASURE SCPI Command Summary ........................................... 6-17

6.6.2 MEASURE SCPI Command Reference .......................................... 6-17

6.7 OUTPUT SCPI Command Subsystem .......................................................... 6-18

6.7.1 OUTPUT SCPI Command Summary .............................................. 6-18

6.7.2 OUTPUT SCPI Command Reference ............................................. 6-18

6.8 STATUS SCPI Command Subsystem .......................................................... 6-19

6.8.1 STATUS SCPI Command Summary ............................................... 6-19

6.8.2 STATUS SCPI Command Reference .............................................. 6-20

6.9 SYSTEM SCPI Command Subsystem .......................................................... 6-21

6.9.1 SYSTEM SCPI Command Summary .............................................. 6-21

6.9.2 SYSTEM SCPI Command Reference ............................................. 6-22

6.10 HTRIGGER SCPI Command Subsystem ..................................................... 6-25

6.10.1 HTRIGGER SCPI Command Summary .......................................... 6-25

6.10.2 HTRIGGER SCPI Command Reference ......................................... 6-25

6.11 TRIGGER SCPI Command Subsystem ........................................................ 6-26

6.11.1 TRIGGER SCPI Command Summary ............................................. 6-26

6.11.2 TRIGGER SCPI Command Reference ........................................... 6-26

6.12 CALIBRATION SCPI Command Subsystem ................................................. 6-27

6.12.1 CALIBRATION SCPI Command Summary ..................................... 6-27

6.12.2 CALIBRATION SCPI Command Reference .................................... 6-29

6.13 SGI-Unique Commands ................................................................................ 6-32

6.13.1 Restrictions on Sequence Programming: ........................................ 6-32

6.13.2 SGI SOURCE SCPI Command Subsystem .................................... 6-34

6.13.3 SGI PROGRAM SCPI Command Subsystem ................................. 6-35

6.13.4 SGI MEASURE SCPI Command Subsystem .................................. 6-42

6.13.5 SGI HTRIGGER SCPI Command Subsystem ................................. 6-42

6.14 Examples of Using the SCPI Commands ..................................................... 6-43

6.14.1 VI Mode Example ........................................................................... 6-43

6.14.2 OVP Setup Example ....................................................................... 6-43

6.14.3 Trigger Example ............................................................................. 6-44

6.14.4 Hardware Trigger Example ............................................................. 6-45

6.14.5 Ramp V Example ............................................................................ 6-45

6.14.6 Ramp I Example ............................................................................. 6-45

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6.14.7 Ramp V Example 2......................................................................... 6-46

6.14.8 Power On INIT Example ................................................................. 6-46

6.14.9 Sequence Creation and Execution Examples ................................. 6-47

SECTION 7 CALIBRATION .................................................................. 7-1

7.1 Introduction .................................................................................................... 7-1

7.2 Setup for Calibration ....................................................................................... 7-2

7.3 Voltage Programming Calibration (Ethernet) .................................................. 7-3

7.4 Voltage Program Gain/Offset and Measurement Readback Calibration (Ethernet,
GPIB) 7-5

7.5 Overvoltage Protection Programming Calibration (Ethernet, GPIB) ................ 7-6

7.6 Current Programming Calibration (Ethernet) .................................................. 7-7

7.7 Current Programing gain/offset and Measurement Readback Calibration

(Ethernet, GPIB) ...................................................................................................... 7-9

7.8 ANALOG PROGRAM ADJUSTMENT .......................................................... 7-11

7.8.1 Adjustment for Current Mode .......................................................... 7-14

7.8.2 Adjustment for Voltage Mode ......................................................... 7-15

SECTION 8 SCPI STATUS IMPLEMENTATION ................................... 8-1

List of Tables

Table 3-1. Remote/Local Switch ................................................................................. 3-6

Table 3-2. Remote Power-on Conditions .................................................................... 3-7

Table 5-1. Remote/Local Switch ................................................................................. 5-9

Table 5-2. Remote Mode Power-on Conditions ......................................................... 5-10

Table 5-3. External User Control Signal Connector Pinout – Ethernet only ............... 5-11

Table 6-1. SCPI Status Byte ....................................................................................... 6-2

Table 6-2. Standard Event Status Register ................................................................. 6-3

Table 6-3. Protection Condition and Event Status Registers ....................................... 6-4

Table 6-4. SCPI Error Codes ...................................................................................... 6-5

Table 6-5. System Fault Registers ............................................................................ 6-24

List of Figures

Figure 3-1. SG Unit with GPIB/RS232 Option ............................................................. 3-1

Figure 3-2. SG Unit with GPIB/RS232 Option ............................................................. 3-2

Figure 3-3. SG Unit with RS232 only .......................................................................... 3-2

Figure 3-4. RS232 Communications Cable Pinout ...................................................... 3-3

Figure 3-5. SGA Configuration Switch for GPIB .......................................................... 3-5

Figure 3-6. SGI 8-pin Configuration Switch for GPIB or Ethernet ................................ 3-5

Figure 3-7. SGI 4-pin Configuration Switch for Ethernet .............................................. 3-5

Figure 3-8. RS232 Rear Panel RJ-type 6P6C Connector Pinout .................................. 3-9

Figure 5-1. SG Rear Panel with Ethernet/RS232 Options ........................................... 5-1

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Figure 5-2. SG Rear Panel with Ethernet/RS232 Options ........................................... 5-2

Figure 5-3. SGI Rear Panel with Ethernet/RS232 Options (4-pin Config Switch shown) 5­3

Figure 5-4. Power Supply’s Home Page (SGI shown here) ......................................... 5-5

Figure 5-5. SG 8-pin Configuration Switch for the Ethernet Option .............................. 5-8

Figure 5-6. SG 4-pin Configuration Switch for the Ethernet Option .............................. 5-8

Figure 5-7. External User Connector Pinout (10-pin Molex, rear panel view)............. 5-11

Figure 5-8. Example of Open-Collector, TTL Input, and Relay Output Circuits .......... 5-12

Figure 5-9. SGI Banner and Tabs ............................................................................. 5-14

Figure 5-10. SGA Banner and Tabs .......................................................................... 5-14

Figure 5-11. Login Window ....................................................................................... 5-15

Figure 5-12. SGI Home Page .................................................................................... 5-16

Figure 5-13. SGI IP Configuration Page .................................................................... 5-17

Figure 5-14. Settings Page ........................................................................................ 5-21

Figure 5-15. Alert Message for Save Settings ........................................................... 5-23

Figure 5-16. Status Page .......................................................................................... 5-24

Figure 5-17. SGI Power Page (not in SGA) ............................................................... 5-26

Figure 5-18. SGI Presets Page (not in SGA) ............................................................. 5-28

Figure 5-19. Security Page ........................................................................................ 5-30

Figure 5-20. Add New User Window from Security Page .......................................... 5-31

Figure 5-21. Edit Existing User Window from Security Page ..................................... 5-32

Figure 6-1. Power Supply Output for Example 1 ....................................................... 6-48

Figure 6-2. Power Supply Output for Example 2 ....................................................... 6-49

Figure 6-3. Power Supply Output for Example 3 ....................................................... 6-50

Figure 6-4. End-of-Sequence Pause for Example 4 .................................................. 6-52

Figure 6-5. Power Supply Output for Example 5 ....................................................... 6-56

Figure 6-6. Power Supply Output for Example 6 ....................................................... 6-57

Figure 6-7. Power Supply Output for Example 7 ....................................................... 6-60

Figure 7-1. Potentiometer Locations .......................................................................... 7-12

Figure 7-2. Precision Current Shunt ........................................................................... 7-13

Figure 7-3. Remote Current Programming Using 0-5 VDC or 0-10 VDC Voltage Source

................................................................................................................................... 7-14

Figure 7-4. SGI Front Panel ....................................................................................... 7-14

Figure 7-5. Remote Voltage Programming Using 0-5 VDC or 0-10 VDC Voltage Source

................................................................................................................................... 7-15

Figure 7-6. Analog Control Connector (J1) ................................................................. 7-16

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1.1

1.2

OVERVIEW

INTRODUCTION

This manual provides instructions for full remote programming control and
monitoring from a computer, for your SG series high power DC power supply.
For easy navigation to the applicable instructions, this manual separates
GPIB and RS232 setup instructions from Ethernet setup instructions. The
instructions then converge where they are common to all three interface
options. See Sections 1.2 and 1.3 for orientation. Use this programming
manual in conjunction with your SGA or SGI Operation manual.

IEEE 488.2 GPIB AND RS232 OPTIONS

If you are using the IEEE 488.2 GPIB or RS232 interface, go to:

• Section 2 for features, functions and specifications,

SECTION 1

• Section 3 for configuration and remote programming setup

• Section 6 for SCPI commands and definitions

• Section 7 for calibration procedures

• Section 8 for SCPI Status Implementation

1.3

ETHERNET OPTION

If you are using an Ethernet interface, go to:

• Section 4 for features, functions, and specifications

• Section 5 for configuration and for programming setup of your SG power

supply via the Ethernet

• Section 6 for SCPI commands and definitions

• Section 7 for calibration procedures

• Section 8 for SCPI Status Implementation

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Overview SG Series Programming

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2.1

2.2

SECTION 2

IEEE 488.2 GPIB/RS232

FEATURES, FUNCTIONS

AND SPECIFICATIONS

INTRODUCTION

This section introduces the features, functions and specifications for IEEE 488.2
GPIB and RS232.

FEATURES

• 16-bit programming and 16-bit readback of voltage and current

• Programmable overvoltage protection with reset

• IEEE 488.2 and SCPI compliant command set

• User selectable Constant-Voltage/Constant-Current or Foldback mode,

with reset

• Voltage Ramp and Current Ramp functions

• Field-upgradable firmware via RS232

• Soft calibration

• Rear panel IEEE 488.2 and RS232 control interface

• Rear panel configuration switch

2.3

PROGRAMMABLE FUNCTIONS

• Output voltage and current

• Soft limits for voltage and current

• Overvoltage protection

• Output enable/disable

• Maskable fault interrupt

• Hold and trigger

• Full calibration

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IEEE/GPIB Features, Functions, Specifications SG Series Programming

2.4

READBACK FUNCTIONS

• Actual measured voltage and current

• Voltage and current settings

• Soft voltage and current limits

• Overvoltage protection setting

• Status and Accumulated Status registers

• Programming error codes

• Fault codes

• Manufacturer, power supply model, and firmware version identification

2.5

SPECIFICATIONS

Specifications are subject to change without notice. Refer to your SGA or SGI
power supply operation manual for effects of line regulation, load regulation,
and temperature on accuracy specifications.

2.5.1

2.5.2

2.5.3

2.5.4

Programming Resolution

Voltage: 0.002% of full scale
Current: 0.002% of full scale
Overvoltage Protection: 0.002% of full scale (full scale is 110% of max

output voltage.)

Programming Accuracy

Voltage: ± ( 0.1% of maximum output voltage)
Current: ± ( 0.4% of maximum output current)*
Overvoltage Protection: ± (1.0% of max output voltage)
* After 30 minutes operation with fixed line, load, and temperature.

Readback Resolution

Voltage: ± 0.002% of full scale
Current: ± 0.002% of full scale

Readback Accuracy

Voltage: ± ( 0.15% of full scale output voltage)
Current: ± ( 0.4% of full scale output current)*
* After 30 minutes operation with fixed line, load, and temperature.

2-2

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3.1

IEEE 488.2 GPIB/ RS232

CONFIGURATIONS

AND REMOTE PROGRAMMING

REAR PANEL

This section provides illustrations of the SG power supply’s rear panel
layout, which differs among the SG models. Figure 3-1, Figure 3-2 and
Figure 3-3 are examples. Regardless of the layout, the component
functions are common across all models, and those that are pertinent to
the RS232 and IEEE 488.2 GPIB options are described here.

SECTION 3

1 – RS232 (RJ-type 6P6C) connector
2 – Configuration Switch (may be 8-pin or 4-pin) - for correct settings see

Section 3.3.1.

3 – IEEE 488.2 GPIB connector

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Figure 3-1. SG Unit with GPIB/RS232 Option

3-1

IEEE/RS232 Configuration and Remote Programming SG Series Programming

Figure 3-2. SG Unit with GPIB/RS232 Option

1 – RS232 (RJ-type 6P6C) connector
2 – Configuration Switch (may be 8-pin or 4-pin) - for correct settings see

Section 3.3.1

3 – IEEE 488.2 GPIB connector

Figure 3-3. SG Unit with RS232 only

1 – RS232 (RJ-type 6P6C) connector
2 – Configuration Switch (may be 8-pin or 4-pin). For correct settings see

Section 3.3.1

3-2

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SG Series Programming IEEE/RS232 Configuration and Remote Programming

3.2

RS232 SETUP PROCEDURE

This section provides a quick reference for the configuration requirements for
RS232. Refer to Sections 3.3.1 and 3.3.2 for detailed information on the rear
panel configuration switches.

Parameter Setting Notes

Baud Rate SGA models: Fixed, 19200 The baud rate for SGI models is

SGI models: Selectable,
2400 to 19200

Data Bits 8
Stop Bits 1
Parity None

Flow Control None
Incoming Termination
Character
Outgoing Termination
Character(s)

CR (Carriage Return):
HEX, 0x0d (DEC, 13)
CR LF (Carriage Return and
Line Feed):
HEX, 0x0d 0x0a (DEC, 13 10)

selectable through the front panel
using the Remote Menu; refer to
Section 3.8.11 of the SGI Operation
Manual, M550221-01.

Selectable using SCPI command,
SYST:NET:TERM; refer to
Section 6.9.2.

1. Build an RS232 communications cable per the pinout description
illustrated in Figure 3-4 (with crossover of signals Rx/Tx and CTS/RTS):

RJ-type 6P6C Plug

Terminal

1 2
2 7
3 No Connection
4 5
5 3
6 8

D-Subminiature 9-Pin Connector

Female Socket

Figure 3-4. RS232 Communications Cable Pinout

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IEEE/RS232 Configuration and Remote Programming SG Series Programming

2. Set the rear panel Remote/Local switch to Remote (On or 1).

3. Connect power to the unit and turn on the unit.

4. SGA: skip this step and go to the next step.
SGI: From the Home menu page 3, press (F1) to enter the Remote
menu. Using the up-down arrows of the NAVPAD (see SGI Operation
Manual) change the baud rate for RS232 to 19200.

5. Use one of the available programs for serial communication, such as
MS HyperTerminalTM, and set the RS232 baud rate to 19200, 8 data
bits, no parity, 1 stop bit, and no flow control.

If you choose to use MS HyperTerminalTM:

a. After inputting the above parameters, in the HyperTerminalTM

window click the disconnect icon and then the properties icon.
b. In the properties window select the Settings tab.
c. In the Settings window click the ASCII Setup button.
d. In the ASCII Setup window in the ASCII Sending section, check

“Echo typed characters locally” and in the ASCII Receiving

section, check “Append line feeds to incoming line ends.” Leave

all other check boxes in their default state.

6. Establish communication.

7. Test the communication interface by issuing the *IDN? Command.
This returns the supply’s model and serial numbers, and software
version(s), as well as the last calibration date, and does not affect the
output of the supply. (If using SGI, navigate to the INFO page of the
SGI unit’s front panel display to verify).

3.3

IEEE 488.2 GPIB SETUP PROCEDURE

1. Set the rear panel Local/Remote switch to Remote (On or 1).

2. SGA: select the GPIB address using the rear panel DIP switches.
SGI: set the GPIB address via the front panel menu (Refer to SGI
Operation manual).

3. Connect GPIB cable from the controlling computer to the power
supply.
NOTE: If operating in an inherently noisy environment, e.g., high RF
or other radiated emissions, a double-shielded GPIB cable is
recommended.

4. Connect power to the unit and turn on the unit.

5. Using a GPIB communication software, test the communication
interface by issuing the *IDN? Command. This returns the supply’s
model and serial numbers, and software version(s), as well as the last
calibration date, and does not affect the output of the supply. (If using
SGI, navigate to the INFO page of the SGI unit’s front panel display to
verify).

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SG Series Programming IEEE/RS232 Configuration and Remote Programming

3.3.1

Configuration Switch

The DIP switch (may be 8-pin or 4-pin) is accessible from the rear panel to
configure the supply for your particular system and application. The following
figures show the configuration, as set up in Section 3.2, and with GPIB
address set to five (5) for the SGA. In the SGI only Remote/Local position is
used, addressing is done through the front panel menu (See SGI operation
manual).

Note: There is one of two types of DIP switches: toggle or rocker.
For toggle switches, the shading indicates the position of the toggle switch.

For rocker switches, the shading indicates the depressed side.

Figure 3-5. SGA Configuration Switch for GPIB

Figure 3-6. SGI 8-pin Configuration Switch for GPIB or Ethernet

Figure 3-7. SGI 4-pin Configuration Switch for Ethernet

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Switch

3.3.2

Remote/Local Selection

Set the rear panel Remote/Local switch to select remote or local operation.

Remote ON switch (rocker) is top depressed.
Table 3-1. Remote/Local Switch

Position

ON

OFF

* In the ON position, the power hardware and GPIB card initialize

to the remote state at power-on.
When in remote operation, the front panel control remains

disabled regardless of the state of the GPIB interface REN
(Remote ENable) line or the GTL (Go To Local) command.

To revert to front panel control, use the special command
SYST:LOCAL <on/off>.

Powering up in remote mode will result in the operating conditions described
in Table 3-2.

Remote operation selected. *
Local operation selected, and front panel control is enabled.

NOTE: Unit will switch to remote operation upon issuing the
first GPIB or RS232 non-query command.

Description

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Table 3-2. Remote Power-on Conditions

Condition Default

0 Volts (initial from factory power-on voltage); otherwise,

Voltage

Current

Soft Voltage Limit

last value saved by SCPI command.
See CAL:INIT:VOLT
0 Amps (initial from factory power-on current); otherwise,
last value saved by SCPI command.
See CAL:INIT:CURR

Model maximum voltage *

Soft Current Limit

OVP Trip Voltage

Delay 0.5 seconds
Foldback Protection OFF (non-configurable)
Output
Hold OFF
Unmask NONE

Service Request
Capability

Model maximum current *
Model maximum voltage +10% (initial from factory power-

on OVP); otherwise, last value saved by SCPI command.
See CAL:INIT:VOLT:PROT

ON ** See CAL:MOD:POWERON

OFF

* User-programmable temporary limit (reverts to power-on defaults after power

cycle or Reset command is issued).

** User-selectable.

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3.3.3

3.3.4

3.3.5

Power-On GPIB Service Request (PON SRQ) Selection

Set the rear panel PON SRQ switch to ON to cause a GPIB service request
to be sent to the computer controller when the supply is turned on.

POWER-ON GPIB SERVICE REQUEST (PON SRQ) SWITCH

Switch Position Description

ON Power-On SRQ selected

OFF No Power-On SRQ selected

Refer to your specific GPIB controller card manual for further details on serial
polling.

Shield Ground

Connects GPIB cable shield to chassis ground.

Address Selection

The address selection for a unit is the GPIB address of that device (1-30).
SCPI reserves channel 0 as the global channel to address all channels.

The SGA address selection is binary with switch A0 as the LSB, and with
switch A4 as the MSB. The rear panel switch illustration in Section 3.3.1
shows the address selection 00101 in binary (5 decimal).

The SGI address is selected and enabled from a list in the Remote menu.
See SGI Operation manual for more details on Remote menu, Navigation and
Editing.

ADDRESS SWITCHES

Switch Position Description

ON 1

OFF 0

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