Agilent E3633A, E3634A User guide

The Agilent E3633A and Agilent E3634A are high performance 200 watt single- output dual range programmable DC power suppli es wi th both GPIB and RS- 232 interfaces. The combination of bench-top and system features in these power supplies provides versatile solutions for your design and test requirements.

Convenient bench-top features

• Single-output dual range

• Easy-to-us e knob control settings

• Highly visible vacuum-fluor escent display meters

• High accuracy and high resolution

• Remote voltage sensing

• Overvoltage and overcurrent protection

• Output on/off

• Excellent load and line regulation and low rip ple and noise

• Operating states storage

• Portable, ruggedized case with non-sk id feet

• Front and Rear output terminals

• Retrieving/Scrolling error messages on the display

Flexible system features

• GPIB (IEEE-488) and RS-232 interfaces are standard

• SCPI (Standard Commands for Programmable Instruments) compatibility

• I/O setup easily done from front-panel

• Software calibration, no internal adjustments required

Agilent E3633A and E3634A DC Power Supplies

The Front Panel at a Glance

1 8V/20A range selection key (E3633A) 25V/7A range selection key (E3634A) 2 20V/10A range selection key (E3633A) 50V/4A range selection key (E3634A)

3 Overvoltage protection key 4 Overcurrent protection key 5 Display limit key 6 Recall operating state key

7 Store operating state/Local key

8 Error/Calibrate key 9 I/O Configuration/Secure key

10 Output On/Off key 11 Control knob 12 Resolution selection keys 13 Voltage/current adjust selection key

1 8V/20A* or 25V/7A** range selection key Selects the 8V/20A or 25V/7A

range and allows the full rated output to 8V/20A or 25V/7A.

2 20V/10A* or 50V/4A** range selection key Selects the 20V/10A or

50V/4A range and allows the full rated output to 20V/10A or 50V/4A.

3 Overvoltage protection key Enables or disables the overvoltage protection

function, sets trip voltage level, and clears the overvoltage condition.

4 Overcurrent protection key Enables or disables the overcurrent protection

function, sets trip current level, and clears the overcurrent condition.

5 Display limit key Shows voltage and current limit values on the display and

allows knob adjustment for setting limit values.

6 Recall operating state key Recalls a previously stored operating state from

location ‘‘1’’, ‘‘2’’, or ‘‘3’’.

7 Store operating state / Local key1 Stores an operating state in location ‘‘1’’,

‘‘2’’, or ‘‘3’’ / or returns the power supply to local mode from remote interface mode.

8 Error / Calibrate key2 Displays error codes generated during operation, self-

test and calibration / or enables calibration mode (the power supply must be unsecured before performing calibration). See Service Guide for more details on calibration.

9 I/O Configuration / Secure key3 Configures the power supply for remote

interfaces / or secure or unsecure the power supply for calibration. See Service Guide for more details on how to secure or unsecure the power supply.

10 Output On/Off key Enables or disables the power supply output. This key

toggles between on and off.

11 Control knob Increases or decreases the value of the blinking digit by turning

clockwise or counter clockwise.

12 Resolution selection keys Move the blinking digit to the right or left. 13 Voltage/current adjust selection key Selects the knob control function for

voltage or current adjustment.

The key can be used as the ‘‘

Local

’’ key when the power supply is in the remote

interface mode.

You can enable the ‘‘calibration mode’’ by holding down this key when you

turn on the power supply.

You can use it as the ‘‘Secure’’ or ‘‘Unsecure’’ key when the power supply is

in the calibration mode.

*For Agilent E3633A Model **For Agilent E3634A Model

iii

Front-Panel Voltage and Current Limit Settings

You can set the voltage and current limit values from the front panel using the following method.

Use the voltage/current adjust selection key, the resolution selection keys, and the control knob to change the voltage and current limit values.

1 Select the desired range using the range selection keys after turning on the

power supply.

2 Press the 3 Move the blinking digit to the appropriate position using the resolution

selection keys and change the blinking digit value to the desired voltage limit by turning the control knob. If the display limit times out, press the again.

4 Set the knob to current control mode by pressing the key. 5 Move the blinking digit to the appropriate position using the resolution

selection keys and change the blinking digit value to the desired current limit by turning the control knob.

6 Press the

will go to output monitoring mode automatically to display the voltage and current at the output or the display will go to output monitoring mode immediately by pressing the

Display

key to show the limit values on the display.

Limit

Vol tage Current

Output

key to enable the output. After about 5 seconds, the display

On/Off

Output

key again.

On/Off

Display Limit

key

Note All front panel keys and controls can be disabled with remote interface commands.

The Agilent E3633A and Agilent E3634A must be in "Local" mode for the front panel keys and controls to function.

Display Annunciators

Adrs Power supply is addressed to listen or talk over a remote interface. Rmt Power supply is in remote interface mode. 8V Shows the 8V/20A range is selected. (Agilent E3633A model) 20V Shows the 20V/10A range is selected. (Agilent E3633A model) 25V Shows the 25V/7A range is selected. (Agilent E3634A model) 50V Shows the 50V/4A range is selected. (Agilent E3634A model) OVP The overvoltage protection function is enabled when the

annunciator turns on or the overvoltage protection circuit has caused the power supply to shutdown when the annunciator blinks.

OCP The overcurrent protection function is enabled when the

annunciator turns on or the overcurrent protection circuit has caused the power supply to shutdown when the annunciator blinks.

CAL The power supply is in calibration mode. Limit The display shows the limit values of voltage and current. ERROR Hardware or remote interface command errors are detected and

the error bit has not been cleared.

OFF The output of the power supply is disabled (See page 52 for more

information).

Unreg The output of the power supply is unregulated (output is neither CV

nor CC).

CV The power supply is in constant voltage mode. CC The power supply is in constant current mode.

To review the display annunciators, hold down key as you turn on

Display Limit

the power supply.

The Rear Panel at a Glance

1 Power-line voltage setting 2 Power-line fuse-holder assembly 3 AC inlet

5 GPIB (IEEE-488) interface connector 6 RS-232 interface connector

7 Rear output terminals

4 Power-line module

Use the front-panel key to:

I/O Config

• Select the GPIB or RS-232 interface (see chapter 3).

• Set the GPIB bus address (see chapter 3).

• Set the RS-232 baud rate and parity (see chapter 3).

In This Book

General Information

power supply. This chapter also provides instructions for checking your power supply, connecting to ac power, and selecting power-li ne voltage.

Initial Operation

outputs and properly responds to operation from the front panel.

Front- Pa ne l O per ati on

keys and how they are used to operate the power supply from the front panel. This chapter also shows how to configure the power supply for the remote interface and gives a brief introduction to the calibration features.

Remo te Int e rf a c e R ef e r e nc e

help you program the power supply over the remote interface. This chapter also explains how to program for status reporting.

Error Messages

are working with the power supply. Each listing contains information to help you diagnose and solve the problem.

Application Programs

applications to help you develop programs for your application.

Tutorial

gives specific details on the operation and use of the Agilent E3633A and Agilent E3634A power supplies.

Chapter 7 describes basic operation of linear power supplies and

Chapter 1 contains a general description of your

Chapter 2 ensures that the power supply develops its rated

Chapter 3 describes in detail the use of front-panel

Chapter 4 contains reference information to

Chapter 5 lists the error messages that may appear as you

Chapter 6 contains some remote interface

Specifications

If you have questions relating to the operation of the power supply, call 1-800-829-4444 in the United States, or contact your nearest Agilent Technologies Sales Office.

If your Agilent E3633A or Agilent E3634A fails within one year of purchase, Agilent will repair or replace it free of charge. Call 1-800-258-5165 ("Express Exchange") in the United States, or contact your nearest Agilent Technologies Sales Office.

Chapter 8 lists the power supply’s specifications .

vii

viii

Chapter 1 General Informatio n

Safety Considerations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14

Safety and EMC Requirements - - - - - - - - - - - - - - - - - - - - - - - - 14

Options and Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

Options- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15 Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16 Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19

Initial Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19

Cooling and Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19 Input Power Requirements- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

Power-Line Cord - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

Power-Line Voltage Selection - - - - - - - - - - - - - - - - - - - - - - - - - 22

Chapter 2 Initial Operation

Preliminary Checkout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27 Power-On Checkout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28 Output Checkout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29

Voltage Output Checkout - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29

Current Output Checkout - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30

Contents

Chapter 3 Front-Panel Operation

Front-Panel Operation Overview- - - - - - - - - - - - - - - - - - - - - - - - - 35 Constant Voltage Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36 Constant Current Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 38 Storing and Recalling Operating States - - - - - - - - - - - - - - - - - - - - 40 Programming Overvoltage Protection- - - - - - - - - - - - - - - - - - - - - 42

Setting the OVP Level and Enable the OVP Circuit - - - - - - - - 42

Checking OVP Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

Clearing the Overvoltage Condition - - - - - - - - - - - - - - - - - - - - 43 Programming Overcurrent Protection- - - - - - - - - - - - - - - - - - - - - 46

Setting the OCP Level and Enable the OCP Circuit- - - - - - - - 46

Checking OCP Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47

Clearing the Overcurrent Condition- - - - - - - - - - - - - - - - - - - - 47 Remote Voltage Sensing at the Front and Rear Terminals - - - - - 49

CV Regulation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

Output Rating - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

Output Noise - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

Stability - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50

Remote Voltage Sensing Connections - - - - - - - - - - - - - - - - - - 50

Remote Voltage Sensing at the Rear Panel - - - - - - - - - - - - - - 51

Contents

Disabling the Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 52 Disablin g the Output Using an External Relay- - - - - - - - - - - - - - - 53 Knob Locking- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 53 System-Related Operations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 54

Self-Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 54 Error Conditions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55 Display Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56 Firmw are Revisi on Query - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57 SCPI Language Version - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57

Remote Interface Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - 58

Remote Interface Selection - - - - - - - - - - - - - - - - - - - - - - - - - - - 58 GPIB Address- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59 Baud Rate Selection (RS-232) - - - - - - - - - - - - - - - - - - - - - - - - - 59 Parity Selection (RS-232)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59 To Set the GPIB Address - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 60

To Set the Baud Rate and Parity (RS-232) - - - - - - - - - - - - - - - 61 GPIB Interface Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - 63 RS-232 Interface Configuration- - - - - - - - - - - - - - - - - - - - - - - - - - - 64

RS-232 Configurati on Overview - - - - - - - - - - - - - - - - - - - - - - - 64

RS-232 Data Frame Format - - - - - - - - - - - - - - - - - - - - - - - - - - - 64

Connection to a Computer or Termi nal - - - - - - - - - - - - - - - - - 65

Contents

DTR / DSR Handshake Protocol - - - - - - - - - - - - - - - - - - - - - - - 66

RS-232 Troubles hooti ng- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 67 Calibration Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 68

Calibration Security- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 68

Calibration Count- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 72

Calibration Message- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 72

Chapter 4 Remote Interface Reference

SCPI Command Summary- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 75 Simpli fied Pro gramm in g Overview - - - - - - - - - - - - - - - - - - - - - - - - 80

Using the

Using the Low-Level Com mands - - - - - - - - - - - - - - - - - - - - - - - 80

Reading a Query Response - - - - - - - - - - - - - - - - - - - - - - - - - - - 81

Selecting a Trigger Source - - - - - - - - - - - - - - - - - - - - - - - - - - - - 81

Power Supply Programm i ng Ranges- - - - - - - - - - - - - - - - - - - - 82 Using the Output Setting and Operation Commands - - - - - - - - - - - - - - - - - - 84 Triggering Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 91

Trigger Source Choices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 91

Triggering Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 93 System-Related Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 94

APPLy

Command - - - - - - - - - - - - - - - - - - - - - - - - - - 80

Command- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 83

Contents

Calibration Commands- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 98 RS-232 Interface Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - 101 The SCPI Status Registers - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 102

What is an What is an SCPI Status System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 103 The Questionable Status Register- - - - - - - - - - - - - - - - - - - - - 104 The Standard Event Register - - - - - - - - - - - - - - - - - - - - - - - - 105 The Status Byte Register- - - - - - - - - - - - - - - - - - - - - - - - - - - - 106 Using Service Request (SRQ) and Serial POLL - - - - - - - - - - 107 Using *STB? to Read the Status Byte- - - - - - - - - - - - - - - - - - 108 Using the Message Available Bit (MAV)- - - - - - - - - - - - - - - - 108 To Interrupt Your Bus Controll er Usi ng SRQ - - - - - - - - - - - 108 To Determine When a Command Sequence is Com pl eted - 109

Using *OPC to Signal When Data is in the Output Buffer - - 109 Status Reporting Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - 110 An Introduction to the SCPI Language - - - - - - - - - - - - - - - - - - - 113

Command Format Used in This Manual- - - - - - - - - - - - - - - - 114

Command Separators - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 115

Using the

Querying Parameter Settings - - - - - - - - - - - - - - - - - - - - - - - - 116

SCPI Command Terminators - - - - - - - - - - - - - - - - - - - - - - - - 116

IEEE-488.2 Common Commands - - - - - - - - - - - - - - - - - - - - - 116

SCPI Parameter Types - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 117 Halting an Output in Progress - - - - - - - - - - - - - - - - - - - - - - - - - - 118 SCPI Conformance Information- - - - - - - - - - - - - - - - - - - - - - - - - 119 IEEE-488 Conformance Information - - - - - - - - - - - - - - - - - - - - - 122

Event Enable

MIN

and

MAX

Parameters - - - - - - - - - - - - - - - - - - 115

Contents

Chapter 5 Error Messages

Execution Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 125 Self-Test Errors- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 130 Calibration Errors- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 131

Chapter 6 Application Programs

Example Program for C and C++- - - - - - - - - - - - - - - - - - - - - - - - 135 Example Program for Excel 97 - - - - - - - - - - - - - - - - - - - - - - - - - 139

Chapter 7 Tutorial

Overview of Agilent E3633A and Agilent E3634A Operation - - 147 Output Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 149

Unregulated State - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 151

Unwanted Signals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 151 Connecting the Load- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 153

Contents

Output Isolation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 153 Multiple Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 153 Remote Voltage Sensing - - - - - - - - - - - - - - - - - - - - - - - - - - - - 154 Load Consideration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 155

Extending the Voltage and Current Range- - - - - - - - - - - - - - - - - 157

Series Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 157

Parallel Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 157 Remote Programming- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 158 Reliability- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 160

Chapter 8 Specifications

Performance Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - 163 Supplemental Ch aracteristi cs - - - - - - - - - - - - - - - - - - - - - - - - - - - 165

Contents

xii

General Information

This is the User’s guide for your Agilent E3633A and E3634A DC power supplies. Unless otherwise stated, the information in this manual applies to both two models.

This chapter provides a general description of your power supply . This chapter also contains instructions for initial inspection, location and cooling for bench and rack operation, selecting the power-line voltage, and connecting your power supply to ac power.

Safety Considerations

This power supply is a Safety Class I instrument, which means that it has a protective earth terminal. That terminal must be connected to earth ground through a power source with a 3-wire ground receptacle.

Before installation or operation , check the power supply and review this manual for safety markings and instructions. Safety information for specific procedures is located at the appropriate pl aces in this manual. See also ‘‘

Safety

’’ at the beginning of this manual for general safety information.

Safety and EMC Requirements

This power supply is designed to comply with the following safety and EMC (Electromagnetic Compatibility) requirements:

• IEC 1010-1(1990)/EN 61010-1(1993) + A2 (1995): Safety Requirements for

Electrical Equipment for Measurement, Control, and Laboratory Use

• CSA C22.2 No.1010.1-92: Safety Requirements for Electrical Equipment for

Measurement, Control, and L aboratory Use

• EN50082-1(1992):

IEC 1000-4-2(1995): Electrostatic Discharge Requirements IEC 1000-4-3(1995): Radiated Electrom agnetic Field R equirem ents

IEC 1000-4-4(1995): Electrical Fast Trans ient/ Bu rst Requi rements EN61000-4-5(1995): Surge Requirements EN61000-4-6(1995): Conducted Radio Frequency Immunity Requir em ents EN61000-4-8(1993): Magnetic Field Requirements EN61000-4-11(1994): Voltage dips, short, interruption and var Requirement

• Low Voltage Directive 73/23/EEC

• EMC Directive 89/336/EEC

Chapter 1 General Information

Options and Accessories

• EN 55011(1991) Group 1, Class A/CISPR 11(1990): Limits and Methods of Radio Interference Characteristics of Industrial, Scientific, and Medical (ISM) Radio - Frequency Equipment.

• ICES/NMB-001 This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme à la norme NMB -001 du Canada.

Options and Accessories

Options

Option 0EM, 0E3, and 0E9 determine whi ch power-line voltage is selected at the factory. The standard unit is configured for 115 Vac ± 10%, 47-63 Hz input voltage. For more information about changing the power-line voltage setting, see ‘‘

Power-Line Voltage Selection

Option Description

0EM 115 0E3 0E9 1CM 0L2

Vac ± 10%, 47-63 Hz input voltage 230 Vac ± 10%, 47-63 Hz input voltage 100 Vac ± 10%, 47-63 Hz input voltage Rack mount kit (Agilent part number 5063-9243) Extra English manual set (local language manual fil es are included on the CD-ROM, Agi lent part number 5964-8251)

’’, starting on page 22 in this ch ap ter.

Accessories

The accessories listed below may be ordered from your local Agilent Technologies Sales Office either with the power supply or separately.

Agilent No. Description

10833A 10833B 34398A

34399A

GPIB cable, 1 m (3.3 ft.) GPIB cable, 2 m (6.6 ft.) RS-232, 9 pin (f) to 9 pin (f), 2.5 m (8.2 ft.) cable; plus 9 pin (m) to 25 pin (f) adapter RS-232 adapter kit (contains 4 adapters): 9 pin (m) to 25 pin (m) for use with PC or printer 9 pin (m) to 25 pin (f) for use with PC or printer 9 pin (m) to 25 pin (m) for use with modem 9 pin (m) to 9 pin (m) for use with modem

Chapter 1 General Information

Description

The Agilent E3633A and Agilent E3634A DC power supplies feature a combination of programming capabilities and linear power supply performance that makes them ideal for power systems applications. The power supply is programmable locally from the front panel or remotely over the GPIB and RS-232 interfaces. This power supply has two ranges, allowing more voltage at a lower current. An output range needed is selected from the front panel or over the remote interfaces.

Operational features include:

• Dual range of single-output: 8V/20A and 20V/10A (Agilent E3633A), 25V/7A and 50V/4A (Agilent E3634A)

• Constant voltage (CV) or constant current (CC) operation

• Overvoltage protection (OVP) and overcurrent protection (OCP)

• Three storage locations (1 to 3) for user-defined operating states

• Automatic turn-on self-test

• Remote sensing for load voltage at the front or rear panel terminals

• User calibration from the front panel or over the remote interfaces

The front panel operation permits:

• Easy-to-use of knob control

• Output range selection

• Enabling or disablin g OVP and OCP features

• Setting the OVP and OCP trip levels

• Clearing OVP and OCP conditions

• Setting and displaying the voltage and current limit values

• Saving and recalling operating states

• Returning the power supply to l ocal mode from remote interface mode

• Retrieving/Scrolling error messages on the display

• Calibrating the power supply, includ ing changing the calibration secure code

• Configuring the power supply for remote interfaces

• Enabling or disablin g the output

Chapter 1 General Information

Description

When operated over the remote interface, the power supply can be both a listener and a talker. Using an external controller, you can instruct the power supply to set the output and to send the status data back over the GPIB or RS-232. Capabili ties inclu de the followin g features:

• Voltage and current programming

• Voltage and current readback

• Present and stored status readback

• Programming syntax error detection

• Complete self-test

The front-panel VFD (Vacuum-Fluorescent Display) incl udes :

• Displaying actual values of output voltage and current (meter mode)

• Or displaying the limit values of voltage and current (limit mode)

• Checking the operating status from the annunciators

• Checking the type of error from the error codes (messages)

Connections to the power supply’s output and to chassis ground are made to binding posts on the

Warning Floating the power supply output more than ±60 Vdc from the chassis presents an

electric shock hazard to the operator. Do not float the outputs more than ±60 Vdc when metal shorting bars without insulation are used to connect the (+) output to the (+) sense and the (-) output to the (-) sense terminals.

front panel

and to the

rear output

terminals.

Chapter 1 General Information

Description

Warning Outputs can be floated to maximum of ±240 Vdc provided that the metal shorting bars

without insulation are either replaced with insulated conductors or they are removed from the terminals so there is no operator access to the output conductors without insulation. All field wiring insulation must be adequate for the voltage present.

The power supply is shipped with a detachable, 3-wire grounding type power cord. The ac line fuse is an extractor type on the rear panel. The power supply can be calibrated from the front panel di rectly or with a controller over the GPIB or RS-232 interface using calibration commands. Correction factors are stored in Calibration from the front panel or a controller eliminate the need to remove the top cover or even the need to remove the power supply from your system cabinet. Y ou can guard against unauthorized calibration by using the “Secured” calibration protection function.

nonvolatile

memory and are used during output programming.

Chapter 1 General Information

Installation

Initial Inspection

When you receive your power supply, insp ect it for any obvious damage that may have occurred during shipment. If any damage is found, notify the carrier and the nearest Agilent Sales Office immediately. Warranty information is shown in the front of this manual.

Keep the original packing materials in case the power supply has to be returned to Agilent Technologies in the future. If you return the power supply for service, attach a tag identifying the owner and model nu mber. Also include a brief description of the problem.

Mechanical Check

This check confirms that there are no broken keys or knob, that the cabinet and panel surfaces are free of dents and scratches, and that the display is not scratched or cracked.

Electrical Check

Chapter 2 describes an initial operation procedure which, when successfully completed, verifies to a high l evel of confidence that the power supply is operating in accordance with its specifications. Detailed electrical verification procedures are included in the

Service Guide

Cooling and Location

Cooling

The power supply can operate without loss of performance within the temperature range of 0 °C to 40 °C, and with derated output current from 40 °C to 55 °C. A fan cools the power supply by drawing air through the rear panel and exhausting it out the sides. Using an Agilent rack mount will not impede the flow of air.

Bench Operation

Y our power supply must be installed in a location that allows sufficient space at the sides and rear of the power supply for adequate air circulation. The rubber bumpers must be removed for rack mounting.

Chapter 1 General Information

Installation

Rack Mounting

The power supply can be mounted in a standard 19-inch rack cabinet using one of three optional kits available. A rack-mounting kit for a single instrument is available as Option 1CM (P/N 5063-9243). Installation instructions and hardware are included with each rack-mounting kit. Any Agilent System II instrument of the same size can be rack-mounted beside the Agilent E3633A or E3634A DC power supply.

Remove the front and rear bumpers before rack-mounting the power supply.

To remove the rubber bumper, stretch a corner and then slide it off.

To rack mount a single instrument, order adapter kit 5063-9243.

Chapter 1 General Information

Installation

To rack mount two instruments of the same depth side-by-side, order lock-link kit 5061-9694 and flange kit 5063-9214.

To install two instruments in a sliding support shelf, order support shelf 5063-9256, and slide kit 1494-0015.

Chapter 1 General Information

Input Power Requirements

Y ou can operate your power supply from a nominal 100 V, 115 V , or 230 V single phase ac power source at 47 to 63 Hz. An indication on the rear panel shows the nominal input voltage set for the power supply at the factory . If necessary , you can change the power-line voltage setting according to the instructions on the next page.

Power-Line Cord

The power supply is shipped from the factory with a power-line cord that has a plug appropriate for your location. Contact the nearest Agilent Sales and Service Office if the wrong power-line cord is included with your power supply. Your power supply is equipped with a 3-wire grounding type power cord; the third conductor being the ground. The power supply is grounded only when the power-line cord is plugged into an appropriate receptacle. Do not operate your power supply without adequate cabinet ground connection.

Power-Line Voltage Selection

Power-line voltage selection is accomplished by adjusting two components: power-line voltage selector and power- line fuse on the power-line module of the rear panel. To change the power-line voltage, proceed as fol lows:

Chapter 1 General Information

Input Power Requirements

Remove the power cord. Remove the

fuse-holder assembly with a flat-blade screwdriver from the rear panel.

Install the correct line fuse. Remove

the power-line voltage selector from the power-line module.

100 or 115 Vac, 6.3 AT fuse 230 Vac, 3.15 AT fuse

Rotate the power-line voltage selector

until the correct voltage appears.

100, 115, or 230 Vac

Replace the power-line voltage selector

and the fuse-holder assembly in the rear panel.

Chapter 1 General Information

Input Power Requirements

Initial Operation

There are three basic tests in this chapter. The automatic power-on test includes a self-test that checks the internal microprocessors and allows the user visually to check the display. The output check ensures that the power supply develops its rated outputs and properly responds to operation from the front panel. For complete performance and/or verification tests, refer to the

Service Guide

This chapter is intended for both the experienced and the inexperienced user because it calls attention to certain checks that s hould be made prior to operation.

Throughout this chapter the key to be pressed is shown in the left margin.

Chapter 2 Initial Operation

Preliminary Checkout

The following steps help you verify that the power supply is ready for use.

1 Check the list of supplied items.

Verify that you have received the following item s with your power sup ply. If anything is missing, contact yo ur nearest Agilent Technologies Sales Office.

One power cord for your location.

This User’s

One Certificate of Calibration.

2 Verify the power-line voltage setting on the rear panel.

The power-line voltage is set to the proper value for your country when the power supply is shipped from the factory. Change the voltage setting if it is not correct. The settings are: 100, 115, or 230 Vac.

3 Verify that the correct power-line fuse is installed.

The correct fuse is installed for your country when the power supply is shipped from the factory. For 100 or 115 Vac operation, you must use a 6.3 AT fuse. For 230 Vac operation, you must use a 3.15 AT fuse.

4 Connect the power-line cord and turn on your power supply.

The front-panel display wil l light up and a power-on self-test occurs automatically when you turn on the power supply.

See ‘‘Power-Line Voltage Selection’’, starting on page 22 in chapter 1 if you need to change the power-line voltage or the powe r-line fuse .

Service

Guide.

To replace the 6.3 AT fuse, order A gile nt part nu m ber 2110-1030. To replace the 3.15 AT fuse, order A gile nt par t num ber 2110-1031.

Chapter 2 Initial Operation

Power-On Checkout

The power-on test includes an automatic self-test that checks the internal microprocesso rs and allow s the user visuall y to check the display. You will observe the following sequence on the display after pressing the front panel power switch to on.

1 The front-panel display will light up briefly while the instrument

performs its power-on self-test.

To review the power-on display with all annunciators turned on, hold down

Display

key as you turn on the power sup ply

Limit

2 The GPIB address or RS-232 is also displayed for abou t one second.

ADDR 05 (or RS-232)

The GPIB address is s et to ‘‘5’’ when the power supply is shipped from the factory for remote interface configuration. If this is not the first time the power supply is turned on, a different interface (RS-232) or a different GPIB address may appear.

See "Remote Interface Configuration" in chapter 3 starting on page 58 if you need to change the remote interface configuration.

3The “8V”* or “

25V

”**, “

OVP

”, “

OCP

” and “

OFF

” annunciators are on.

All others are off.

The power supply will go into the power-on / reset state; the output is disabled (the

OFF

annunciator turns on); the 8/20A* or 25V/7A** range is selected (the

* or

25V

** annunciator turns on); and the knob is selected for voltage

Output On/Off

control. Notice that the

4 Enable the outputs.

The

OFF

annunciator turns off and the 8V* or

annunciators are lit. The

OVP

and

blinking

OCP

annunciator also turn on.

25V

**,

OVP, OCP

, and CV

digit can be adjusted by turning the knob. Notice that the display is in the meter mode. ‘‘Meter mode’’ means that the display shows the actual output voltage and current.

Note If the power supply detects an error during power-on self-test, the ERROR

annunciator will turn on.

See "Error Messages" for more information starting on page

123 in chapter 5

*For Agilent E3633A Model **For Agilent E3634A Model

Power

Output On/Off

Chapter 2 Initial Operation

Output Checkout

The following procedures check to ensure that the power supply develops its rated outputs and properly responds to operation from the front panel. For complete performance and verification tests, refer to the

For each step, use the keys shown on the left margins.

Voltage Output Checkout

The following steps verify bas ic voltage functions with no load.

1 Turn on the power supply.

The power supply will go into the power-on / reset state; the output is disabled (the

OFF

annunciator turns on); the 8V/20A* or 25V/7A** range is selected (the

* or

25V

** annunciator turns on); and the knob is selected for voltage

control.

2 Enable the outpu ts.

The

OFF

annunciator turns off and the 8V* or annunciators are lit. The blinki ng digit can be adjusted by turning the knob. Notice that the display is in the meter mode. ‘‘Meter mode’’ means that the display shows the actual output voltage and current.

25V

**,

Service Guide

OVP, OCP

, and CV

3 Check that the front-pa nel voltmeter properly responds to knob

control for the 8V/20A* or 25V/7A ** range.

Turn the knob clockwise or counter clockwise to check that the voltmeter responds to knob control and the ammeter indicates nearly zero.

4 Ensure that the voltage can be adjusted from zero to the full rated

value.

Adjust the knob until the voltmeter indicates 0 volts and then adjust the knob

8.0

until the voltmeter indicates ‘‘

You can use the resolution selection keys to move the blinking digit to the

volts’’* or ‘‘

25.0

vol t s ’’**

right or left when settin g the voltage.

*For Agilent E3633A Model **For Agilent E3634A Model

Power

Output On/Off

Display Limit

Vol tage

Current

Chapter 2 Initial Operation

Output Checkout

Current Output Checkout

The following steps check basic current functions with a short across the power supply’s output.

1 Turn on the power supply.

The power supply will go into the power-on / reset state; the output is disabled (the

OFF

annunciator turns on); the 8V/20A* or 25V/7A** range is selected (the

* or

25V

** annunciator turns on); and the knob is selected for voltage

control.

2 Conn e c t a s hor t a c r os s (+) and (-) output te r mi n a l s w i th a n i n sulated

test lead.

Use a wire size sufficient to handle the maximum current (See "Table 7-1 Wire Rating" on page 153 in chapter 7).

3 Enable the outpu t.

The

OFF

annunciator turns off and the 8V* or

annunciators are lit. The

or CC annunciator turns on depending on the resistance of the test lead. The blinking digit can be adjusted by turning the knob. Notice that the display is in the meter m ode. ‘‘Meter mode’’ means that the display shows the actual output vo ltage and current.

4 Adjust the voltage limit value to 1.0 volt.

Set the display to the limit mode (the

Limit

the voltage limit to 1.0 volt to assure CC operation. The turn on. To go back to normal mode, press the time out for several seconds .

5 Set the knob to the current control to check that the front-panel

ammeter properly responds to knob control.

T urn the knob clockwise or counter clockwise when the display is in the meter

Limit

mode (the

annunciator is off). Check that the ammeter responds to knob control and the voltmeter indicates nearly zero (the voltmeter will show the voltage drop caused by the test lead).

25V

**,

OVP

, and

OCP

annunciator will be blinking). Adjust

Display

key again or let the display

Limit

annunciator will

*For Agilent E3633A Model **For Agilent E3634A Model

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