Agilent Technologies E3634A, E3633A User Manual

User’s Guide

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The Agilent E3633A and Agilent E3634A are high performance 200 watt singleoutput dual range programmable DC power supplies with both GPIB and RS232 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-use knob control settings

• Highly visible vacuum-fluorescent display meters

• High accuracy and high resolution

• Remote voltage sensing

• Overvoltage and overcurrent protection

• Output on/off

• Excellent load and line regulation and low ripple and noise

• Operating states storage

• Portable, ruggedized case with non-skid 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 key

Stores an operating state in location ‘‘1’’, ‘‘2’’, or ‘‘3’’ / or returns the power supply to local mode from remote interface mode.

8 E r ror / Cal ibrate k e y

Displays error codes generated during operation, selftest 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 key

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

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 key 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

Volt ag e Current

Output

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

On/Off

Output

key again.

On/Off

Display Limit

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 Chapter 1 contains a general description of your power supply. This chapter also provides instructions for checking your power supply, connecting to ac power, and selecting power-line voltage.

Initial Operation C ha pt e r 2 en su r es th at th e p o we r s up pl y d e ve l op s i ts ra te d outputs and properly responds to operation from the front panel.

Front-Panel Operation Chap ter 3 describes in detail the use of front-panel 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.

Remote Interface Reference Chapter 4 contains reference information to help you program the power supply over the remote interface. This chapter also explains how to program for status reporting.

Error Messages Chapter 5 lists the error messages that may appear as you are working with the power supply. Each listing contains information to help you diagnose and solve the problem.

Application Programs Chapter 6 contains some remote interface applications to help you develop programs for your application.

Tutorial Chapter 7 describes basic operation of linear power supplies and gives specific details on the operation and use of the Agilent E3633A and Agilent E3634A power supplies.

Specifications Chapter 8 lists the power supply’s specifications.

If you have questions relating to the operation of the power supply, call 1-800-452-4844 in the United States, or contact your nearest Agilent Technologies Sales Office.

If your Agilent E3633A or Agilent E3634A fails within three years 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 1 General Information

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

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

Self-Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 54 Error Conditions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55 Display Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56 Firmware Revision 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 Configuration Overview - - - - - - - - - - - - - - - - - - - - - - - 64

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

Connection to a Computer or Terminal - - - - - - - - - - - - - - - - - 65

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

RS-232 Troubleshooting- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 67 Calibration Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 68

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

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

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

Chapter 4 Remote Interface Reference

SCPI Command Summary - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 75 Simplified Programming Overview- - - - - - - - - - - - - - - - - - - - - - - - 80

Using the

Using the Low-Level Commands- - - - - - - - - - - - - - - - - - - - - - - 80

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

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

Power Supply Programming 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 Event Register? - - - - - - - - - - - - - - - - - - - - - - - - - - 102 What is an Enable Register? - - - - - - - - - - - - - - - - - - - - - - - - - 102 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 Controller Using SRQ - - - - - - - - - - - 108 To Determine When a Command Sequence is Completed - 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 MIN and MAX Parameters - - - - - - - - - - - - - - - - - - 115

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

Chapter 5 Error Messages

Contents

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 Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - 165

Contents

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 places 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 Laboratory Use

• EN50082-1(1992):

IEC 1000-4-2(1995): Electrostatic Discharge Requirements IEC 1000-4-3(1995): Radiated Electromagnetic Field Requirements

IEC 1000-4-4(1995): Electrical Fast Transient/Burst Requirements EN61000-4-5(1995): Surge Requirements EN61000-4-6(1995): Conducted Radio Frequency Immunity Requirements 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

Options and Accessories

Options

Option ‘‘0E3’’ and ‘‘0E9’’ determine which 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’’, starting on page 22 in this chapter.

Option Description

0E3 0E9 1CM 910

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 manual set (same language as the selected language manual set when you order the power supply)*

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

*To order a separate set of English User’s guide and Service guide, order Agilent part number E3634-90000.

GPIB cable, 1 m (3.3 ft.) GPIB cable, 2 m (6.6 ft.) RS-23 2, 9 pin (f) to 9 pin ( f), 2.5 m (8.2 ft.) cable; pl us 9 p in (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 disabling 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 local mode from remote interface mode

• Retrieving/Scrolling error messages on the display

• Calibrating the power supply, including changing the calibration secure code

• Configuring the power supply for remote interfaces

• Enabling or disabling 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. Capabilities include the following 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) includes:

• 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 front panel and to the rear output terminals.

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.

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 directly or with a controller over the GPIB or RS-232 interface using calibration commands. Correction factors are stored in nonvolatile memory and are used during output programming. 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 c ab i ne t. You c an g ua r d a g ai ns t u n au th or iz ed c al i br at io n by us in g th e “S ec ur e d” calibration protection function.

Chapter 1 General Information

Installation

Initial Inspection

When you receive your power supply, inspect 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 number. 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 level 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

Your 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 instrument side-by-side, order lock-link kit 5061-9694 and flange kit 5063-9214.

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

Chapter 1 General Information

Input Power Requirements

You 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 follows:

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.

Rotate the power-line voltage selector

until the correct voltage appears.

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

Replace the power-line voltage selector and the fuse-holder assembly in the rear panel.

100, 115, or 230 Vac

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 should 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 items with your power supply. If anything is missing, contact your nearest Agilent Technologies Sales Office.

One power cord for your location. This User’s Guide. One Service Guide. 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 will 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 power-line fuse.

To replace the 6.3 AT fuse, order Agilent part number 2110-1030. To replace the 3.15 AT fuse, order Agilent part number 2110-1031.

Chapter 2 Initial Operation

Power-On Checkout

The power-on test includes an automatic self-test that checks the internal microprocessors and allows the user visually 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 supply.

Limit

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

ADDR 05 (or RS-232)

The GPIB address is set 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

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

(the

8V* or 25V** annunciator turns on); and the knob is selected for voltage

OVP and OCP annunciator also turn on.

Output On/Off

control. Notice that the

4 Enable the outputs.

OFF annunciator turns off and the 8V* or 25V**, OVP, OCP, and CV

The annunciators are lit. The blinking 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 Service Guide.

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

Voltage Output Checkout

The following steps verify basic 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

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

(the

8V* or 25V** annunciator turns on); and the knob is selected for voltage

control.

2 Enable the outputs.

OFF annunciator turns off and the 8V* or 25V**, OVP, OCP, and CV

3 Check that the front-panel 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 until the voltmeter indicates ‘‘

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

8.0 volts’’* or ‘‘25.0 volts’’**

right or left when setting the voltage.

*For Agilent E3633A Model **For Agilent E3634A Model

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