Agilent Technologies E3640-90001 User Manual

User’s Guide

Part Number: E3640-90001 January 2000.

For Safety information, Warranties, and Regulatory information, see the pages behind the Index.

Agilent E364xA Single Output DC Power Supplies

The Agilent Technologies E3640A/E3641A (30 watt), E3642A/E3643A (50 watt), and E3644A/E3645A (80 watt) are high performance single-output dual range programmable DC power supplies with 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

• Output on/off

• High accuracy and high resolution

• Excellent load and line regulation

• Low ripple and noise

• Overvoltage protection

• Five Operating states storage

• Easy-to-use controls

• Remote voltage sensing

• Front and Rear output terminals

• Portable, ruggedized case with non-skid feet

• Highly visible vacuum-fluorescent displays

• Error messages available 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 physical adjustments

Agilent Technologies E364xA Single Output DC Power Supplies

The Front Panel at a Glance

1 Low voltage range selection Key 2 High voltage range selection Key 3 Overvoltage protection Key 4 Display limit Key 5 Voltage/Current adjust selection Key 6 Stored state Recall/Reset Menu

7 State storage menu/Local Key 8 View menu/Calibrate Key 9 I/O Configuration menu/Secure Key

10 Output On/Off Key 11 Resolution selection Keys 12 Knob

Front-Panel Menu/Key Reference

This section gives an overview of the front-panel keys/menus. The menus are designed to automatically guide you through all parameters required to configure a particular function or operation.

1 Low voltage range selection key Selects the low voltage range and allows

its full rated output to the output terminals.

2 High voltage range selection key Selects the high voltage range and allows

its full rated output to the output terminals.

3 Overvoltage protection key Enables or disables the overvoltage protection

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

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

allows the knob adjustment for setting limit values.

5 Voltage/Current adjust selection key Selects the knob control function for

voltage or current adjustment.

6 Stored state recall menu Recalls a stored operating state from location ‘‘1’’

through ‘‘5’’ and resets the power supply to the power-on state (*RST command) from the front panel by selecting the ‘‘RESET’’ from this menu.

7 State storage menu / Local key

non-volatile memory and assigns a name to each of the storage locations / or returns the power supply to local mode from remote interface mode.

8 View menu / Calibrate key

message, calibration string, and system firmware revision / or enables calibration mode.

9 I/O Configuration / Secure key

interfaces / or secures or unsecures the power supply for calibration.

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

toggles between on and off.

11 Resolution selection keys Move the flashing digit to the right or left and

adjust the scrolling speed of the text being displayed in the View menu.

12 Knob Increases or decreases the value of the flashing digit by turning

clockwise or counter clockwise.

Stores up to five power supply’s states in

Views the error codes and the text of the error

Configures the power supply for remote

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.

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.

Low

High

1 Select the desired voltage range using the voltage range selection keys after

turning on the power supply.

2 Press 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 key again.

4 Set the knob to current control mode by pressing 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

go to output monitoring mode automatically to display the voltage and current at the output.

Display

key to show the limit values on the display.

Limit

Display

Vol ta ge

Current

Output

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

On/Off

Limit

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

The power supply 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 low voltage range is selected. 20V* Shows the high voltage range is selected. 35V** Shows the low voltage range is selected. 60V** Shows the high voltage range is selected. 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.

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 54 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.

*For E3640A/42A/44A model. **For E3641A/43A/45A model.

The Rear Panel at a Glance

Note: The supplier code of the C-Tick for the E3643A/45A is N10149.

1 AC inlet 2 Power-line fuse-holder assembly 3 Power-line module

Use the front-panel key to:

I/O

Config

4 RS-232 interface connector 5 GPIB (IEEE-488) interface connector 6 Rear output terminals

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

• Set the GPIB address (see chapter 3).

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

In This Book

Quick Start Chapter 1 helps you get familiar with a few of the power supply’s the front panel feature.

General Information Chapter 2 contains a general description of your power supply. This chapter also provides instructions for installation of your power supply and the output connections.

Front-Panel Operation Chapter 3 describes in de tail 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 your power supply.

Specifications Chapter 8 lists the power supply’s specifications.

Service Information Contains guidelines to return your power supply to

Agilent Technologies for servicing, procedures for verification & calibration, and replaceable parts list and component locator diagram & schematics.

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 power supply 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 Quick Start

Preliminary Checkout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17 Output Checkout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18

Voltage Output Checkout - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18

Current Output Checkout - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19 If the Power Supply Does Not Turn On - - - - - - - - - - - - - - - - - - - - 20 Line Voltage Conversion- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 21 To Adjust the Carrying Handle- - - - - - - - - - - - - - - - - - - - - - - - - - - 23 To Rack Mount the Instrument - - - - - - - - - - - - - - - - - - - - - - - - - - 24

Chapter 2 General Information

Safety Considerations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29

Safety and EMC Requirements - - - - - - - - - - - - - - - - - - - - - - - - 29 Options and Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30

Options- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30

Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30 Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31 Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33

Initial Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33

Cooling and Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33 Output Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34

Current Ratings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34

Voltage Drops - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 35

Load Consideration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 35

Remote Voltage Sensing Connections - - - - - - - - - - - - - - - - - - 36

Multiple Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 38

Contents

Chapter 3 Front-Panel Operation and Features

Front-Panel Operation Overview - - - - - - - - - - - - - - - - - - - - - - - - - 41 Constant Voltage Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 42 Constant Current Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44 Configuring the Remote Interface - - - - - - - - - - - - - - - - - - - - - - - - 46

GPIB Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46

RS-232 Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47 Storing and Recalling Operating States - - - - - - - - - - - - - - - - - - - - 48 Programming Overvoltage Protection - - - - - - - - - - - - - - - - - - - - - 50

Setting the OVP Level and Enable the OVP Circuit - - - - - - - - 50

Checking OVP Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51

Clearing the Overvoltage Condition - - - - - - - - - - - - - - - - - - - - 51 Disabling the Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 54

Disconnecting the Output Using an External Relay - - - - - - - 54

Contents

System-Related Operations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55

State Storage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55 Self-Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56 Error Conditions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56 Firmware Revision Query - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57

SCPI Language Version - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57 GPIB Interface Reference - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 58 RS-232 Interface Reference- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59

RS-232 Configuration Overview - - - - - - - - - - - - - - - - - - - - - - - 59

RS-232 Data Frame Format - - - - - - - - - - - - - - - - - - - - - - - - - - - 59

Connection to a Computer or Terminal - - - - - - - - - - - - - - - - - 60

RS-232 Troubleshooting- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 61 Calibration Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 62

Calibration Security - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 62

To Unsecure for Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - 63

To Secure Against Calibration - - - - - - - - - - - - - - - - - - - - - - - - - 64

Calibration Count- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 65

Calibration Message- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 66

Chapter 4 Remote Interface Reference

SCPI Command Summary- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 69 Simplified Programming Overview- - - - - - - - - - - - - - - - - - - - - - - - 74

Using the

Using the Low-Level Commands- - - - - - - - - - - - - - - - - - - - - - - 74

Reading a Query Response - - - - - - - - - - - - - - - - - - - - - - - - - - - 75

Selecting a Trigger Source- - - - - - - - - - - - - - - - - - - - - - - - - - - - 75

Power Supply Programming Ranges- - - - - - - - - - - - - - - - - - - - 76 Using the Output Setting and Operation Commands - - - - - - - - - - - - - - - - - - 78 Triggering- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 82

Trigger Source Choices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 82

Triggering Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 84 System-Related Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 85 State Storage Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 88 Calibration Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 89 Interface Configuration Commands - - - - - - - - - - - - - - - - - - - - - - - 92 The SCPI Status Registers- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 93

What is an Event Register? - - - - - - - - - - - - - - - - - - - - - - - - - - - 93

What is an Enable Register? - - - - - - - - - - - - - - - - - - - - - - - - - - 93

SCPI Status System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 94

The Questionable Status Register - - - - - - - - - - - - - - - - - - - - - - 95

The Standard Event Register- - - - - - - - - - - - - - - - - - - - - - - - - - 96

APPLy

Command - - - - - - - - - - - - - - - - - - - - - - - - - - 74

Command - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 77

Contents

The Status Byte Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 97 Using Service Request (SRQ) and Serial POLL - - - - - - - - - - - 98 Using *STB? to Read the Status Byte - - - - - - - - - - - - - - - - - - - 99 Using the Message Available Bit (MAV) - - - - - - - - - - - - - - - - - 99 To Interrupt Your Bus Controller Using SRQ - - - - - - - - - - - - 99 To Determine When a Command Sequence is Completed - 100

Using *OPC to Signal When Data is in the Output Buffer - - 100 Status Reporting Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - 101 An Introduction to the SCPI Language - - - - - - - - - - - - - - - - - - - 103

Command Format Used in This Manual- - - - - - - - - - - - - - - - 104

Command Separators - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 105

Using the MIN and MAX Parameters - - - - - - - - - - - - - - - - - - 105

Querying Parameter Settings - - - - - - - - - - - - - - - - - - - - - - - - 106

SCPI Command Terminators - - - - - - - - - - - - - - - - - - - - - - - - 106

IEEE-488.2 Common Commands - - - - - - - - - - - - - - - - - - - - - 106

SCPI Parameter Types - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 107 Halting an Output in Progress - - - - - - - - - - - - - - - - - - - - - - - - - - 108 SCPI Conformance Information- - - - - - - - - - - - - - - - - - - - - - - - - 109 IEEE-488 Conformance Information - - - - - - - - - - - - - - - - - - - - - 112

Chapter 5 Error Messages

Contents

Execution Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 115 Self-Test Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 120 Calibration Errors- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 121

Chapter 6 Application Programs

Example Program for C and C++- - - - - - - - - - - - - - - - - - - - - - - - 125 Example Program for Excel 97 - - - - - - - - - - - - - - - - - - - - - - - - - 129

Chapter 7 Tutorial

Overview of this Power Supply Operation - - - - - - - - - - - - - - - - 137 Output Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 139

Unregulated State - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 141

Unwanted Signals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 141 Extending the Voltage and Current Range - - - - - - - - - - - - - - - - 143

Series Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 143

Parallel Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 143 Remote Programming - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 144

Chapter 8 Specifications

Performance Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - 149 Supplemental Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - 151

Contents

Appendix Service Information

Operating Checklist - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 157

Is the Power Supply Inoperative? - - - - - - - - - - - - - - - - - - - - - 157 Does the Power Supply Fail Self-Test? - - - - - - - - - - - - - - - - - 157

Types of Service Available - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 158

Standard Repair Service (worldwide)- - - - - - - - - - - - - - - - - - 158

Express Exchange (U.S.A. only) - - - - - - - - - - - - - - - - - - - - - - 158 Repacking for Shipment - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 159 Electrostatic Discharge (ESD) Precautions- - - - - - - - - - - - - - - - 160 Surface Mount Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 160 To Replace the Power-Line Fuse - - - - - - - - - - - - - - - - - - - - - - - - 160 Troubleshooting Hints- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 161

Unit Reports Errors 740 to 750 - - - - - - - - - - - - - - - - - - - - - - - 161

Unit Fails Self-Test- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 161

Bias Supplies Problems - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 161 Self-Test Procedures - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 162

Power-On Self-Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 162

Complete Self-Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 162 General Disassembly - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 164 Recommended Test Equipment - - - - - - - - - - - - - - - - - - - - - - - - - 165 Test Considerations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 166 Operation Verification and Performance Tests - - - - - - - - - - - - - 166 Measurement Techniques - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 167

Setup for Most Tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 167

Current-Monitoring Resistor - - - - - - - - - - - - - - - - - - - - - - - - - 167

General Measurement Techniques - - - - - - - - - - - - - - - - - - - - 168

Electronic Load - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 168

Programming - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 168 Constant Voltage (CV) Verifications- - - - - - - - - - - - - - - - - - - - - - 169

Constant Voltage Test Setup - - - - - - - - - - - - - - - - - - - - - - - - - 169

Voltage Programming and Readback Accuracy - - - - - - - - - - 169

CV Load Effect (Load Regulation) - - - - - - - - - - - - - - - - - - - - 170

CV Source effect (Line Regulation)- - - - - - - - - - - - - - - - - - - - 171

CV PARD (Ripple and Noise) - - - - - - - - - - - - - - - - - - - - - - - - 171

Load Transient Response Time - - - - - - - - - - - - - - - - - - - - - - - 173 Constant Current (CC) Verifications - - - - - - - - - - - - - - - - - - - - - 174

Constant Current Test Setup - - - - - - - - - - - - - - - - - - - - - - - - - 174

Current Programming and Readback Accuracy - - - - - - - - - - 174

CC Load Effect (Load Regulation) - - - - - - - - - - - - - - - - - - - - 175

CC Source Effect (Line Regulation) - - - - - - - - - - - - - - - - - - - 176

CC PARD (Ripple and Noise) - - - - - - - - - - - - - - - - - - - - - - - - 177 Common Mode Current Noise - - - - - - - - - - - - - - - - - - - - - - - - - - 178

Contents

Performance Test Record for Your Power Supply - - - - - - - - - - 179

CV Performance Test Record - - - - - - - - - - - - - - - - - - - - - - - - 179 CC Performance Test Record - - - - - - - - - - - - - - - - - - - - - - - - 180

Calibration Reference- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 181

Agilent Technologies Calibration Services- - - - - - - - - - - - - - 181 Calibration Interval - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 181 To Unsecure the Power Supply Without the Security Code 181

General Calibration/Adjustment Procedure - - - - - - - - - - - - - - - 182

Front Panel Voltage and Current Calibration- - - - - - - - - - - - 183 Calibration Record for Your Power Supply - - - - - - - - - - - - - - - - 187 Calibration Error Messages - - - - - - - - - - - - - - - - - - - - - - - - - - - - 188 Replaceable Parts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 189

To Order Replaceable Parts - - - - - - - - - - - - - - - - - - - - - - - - - 189

Schematics and Diagrams - - - - - - - - - - - - - - - - - - - - - - - - - - - 189

E3640A/41A/42A/43A/44A/45A Power Supply Assembly - - - 190

Manufacturer’s List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 191

Contents

Quick Start

One of the first things you will want to do with your power supply is to become acquainted with the front panel. The exercises in this chapter prepare the power supply for use and help you get familiar with some of its front-panel operations.

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 1 Quick Start

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. Quick Reference Guide. Certificate of Calibration.

2 Connect the power cord and turn on the power supply.

The front-panel display will light up briefly while the power supply performs its power-on self-test. The GPIB address is also displayed. To review the power- on display with all annunciators turned on, hold down as you turn on the power supply. If the power supply does not turn on properly, see page 20.

Display

Limit

3 Perform a complete self-test.

The complete self-test performs a more extensive set of tests than those performed at power-on. Hold down as you turn on the power supply and

Display

Limit

hold down the key until you hear a long beep. The self-test will begin when you release the key following the beep.

If the self-test fails, see the Service Information for instructions on returning the power supply to Agilent Technologies for service.

Note The power supply is shipped from the factory with a power-line cord that has a plug

appropriate for your location. 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

Output

On/Off

Chapter 1 Quick Start

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 Information.

Note: If an error has been detected during the output checkout procedures,

ERROR annunciator will turn on. See "Error Messages" starting on page

the 113 in chapter 5 for more information.

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); its low voltage range is selected, and the OVP

(the annunciator and low voltage range indication annunciator turn on (for example, selected for voltage control.

2 Enable the outputs.

8V annunciator turns on for the E3640A model); and the knob is

OFF annunciator turns off and the CV annunciator turns on. Notice that

The the display is in the meter mode. ‘‘Meter mode’’ means that the display shows the actual output voltage and current.

3 Check that the front-panel voltmeter properly responds to knob

control for both low and high voltage range.

Turn the knob clockwise or counter clockwise to check that the voltmeter responds to knob control and the ammeter indicates nearly zero. The flashing digit can be adjusted by turning the knob.

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

value by adjusting the knob.

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

right or left when setting the voltage.

Power

Chapter 1 Quick Start

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.

Make sure that the output is disabled. The

2 Connect a short across (+) and (-) output terminals with an insulated

test lead.

OFF annunciator is on

Output

On/Off

Display

Limit

Vol ta ge

Curren t

Us e a wire size suffic ient to handle th e max i mum current (See "

" on page 34 in chapter 2).

Rating

Table 2-1 Wire

3 Enable the output.

CV or CC annunciator turns on depending on the resistance of the test

The lead. Notice that the display is in the meter mode.

4 Adjust the voltage limit value to 1.0 volt.

Set the display to the limit mode (the Ad jus t the vol tage limit to 1.0 volt to assure CC ope rati on. The will turn on. To go back to normal mode, press the key again or let the

Limit annunciator will be flashing).

Display

Limit

CC annunciator

display time out after several seconds.

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

ammeter properly responds to knob control.

Turn the knob clockwise or counter clockwise when the display is in the meter mode (the

Limit 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). The flashing digit can be adjusted by turning the knob.

6 Ensure that the current can be adjusted from zero to the full rated

value.

7 Turn off the power supply and remove the short from the output

terminals.

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

right or left when setting the current.

Chapter 1 Quick Start

If the Power Supply Does Not Turn On

Use the following steps to help solve problems you might encounter when turning on the instrument. If you need more help, refer to chapter 5 for instructions on returning the instrument to Agilent Technologies for service.

1 Verify that there is ac power to the power supply.

First, verify that the power cord is firmly plugged into the power receptacle on the rear panel of the power supply. You should also make sure that the power source you plugged the power supply into is energized. Then, verify that the power supply is turned on.

2 Verify the power-line voltage setting.

The 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’s 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. See the table below to replace the fuse for your power supply.

Model Agilent Part Number Part Description

E3640A/41A 2110-1069 Fuse 1.5A T 125V for 100 and 115 Vac

E3640A/41A 2110-0457 Fuse 1A T 250V for 230 Vac

E3642A/43A 2110-1070 Fuse 2.5A T 125V for 100 and 115 Vac

E3642A/43A 2110-0457 Fuse 1A T 250V for 230 Vac

E3644A/45A 2110-1071 Fuse 3.15A T 125V for 100 and 115 Vac

E3644A/45A 2110-1068 Fuse 2A T 250V for 230 Vac

See the next page if you need to change the line voltage setting and the powerline fuse.

Chapter 1 Quick Start

Line Voltage Conversion

Warning

Shock Hazard Operating personnel must not remove power supply covers. Component replacement and internal adjustments must be made only by qualified service personnel.

Line voltage conversion is accomplished by adjusting two components: the line voltage selection switch and the power-line fuse on the rear panel.

1 Remove AC line power. 2 Remove the cover (Refer to General Disassembly on page 164). 3 Set two sections of the line voltage selector switch on the PC board for the

desired line voltage (See Figure 1-1 below).

4 See the next page to check the rating of the power-line fuse and replace with

the correct one if necessary.

5 Replace the cover and mark the power supply clearly with a tag or label

indicating the correct line voltage and fuse that is in use.

(TOP VIEW)

Figure 1-1. Line Voltage Selector (set for 115Vac)

100V

115V

230V

Chapter 1 Quick Start

Line Voltage Conversion

1 Remove the power cord. Remove the fuse-holder assembly with a flatblade screwdriver from the rear panel.

3 Replace with the correct fuse.

2 Remove the fuse-holder from the assembly.

4 Replace the fuse-holder assembly in rear panel.

Verify that the correct line voltage is selected and the power-line fuse is good.

Chapter 1 Quick Start

To Adjust the Carrying Handle

To adjust the position, grasp the handle by the sides and pull outward. Then, rotate the handle to the desired position.

Bench-top viewing positions Carrying position

Chapter 1 Quick Start

To Rack Mount the Instrument

You can mount the power supply in a standard 19-inch rack cabinet using one of three optional kits available. Instructions and mounting hardware are included with each rack-mounting kit. Any Agilent Technologies System II instrument of the same size can be rack-mounted beside the Agilent E3640A, E3641A, E3642A, E3643A, E3644A, or E3645A.

Note: Remove the carrying handle, and the front and rear rubber bumpers, before rack-mounting the instrument.

To remove the handle, rotate it to the vertical position and pull the ends outward.

Front Rear (bottom view)

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

Chapter 1 Quick Start

To Rack Mount the Instrument

To rack mount a single instrument, order adapter kit 5063-9240.

To rack mount two instruments side-by-side, order lock-link kit 5061-9694 and flange kit 5063-9212. Be sure to use the support rails inside the rack cabinet.

To install one or two instruments in a sliding support shelf, order shelf 5063-9255, and slide kit 1494-0015 (for a single instrument, also order filler panel 5002-3999).

Chapter 1 Quick Start

To Rack Mount the Instrument

General Information

This manual describes the operation of the Agilent Technologies Model E3640A, E3641A, E3642A, E3643A, E3644A and E3645A DC power supplies.

This chapter contains a general description of your power supply. This chapter also provides instructions for installation of your power supply and the output connections. Unless otherwise stated, the information in this manual applies to all the six models. This chapter is divided into the following sections:

• Safety Considerations‚ on page 29

• Options and Accessories‚ on page 30

• Description‚ starting on page 31

• Installation‚ on page 33

• Output Connections‚ on page 34

Chapter 2 General Information

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

• EN61326-1(1997):

EN 61000-4-2(1995): Electrostatic Discharge Requirements EN 61000-4-3(1996): Radiated Electromagnetic Field Requirements EN 61000-4-4(1995): Electrical Fast Transient/Burst Requirements EN61000-4-5(1995): Surge Requirements EN61000-4-6(1996): Conducted Radio Frequency Immunity Requirements EN61000-4-8(1993): Magnetic Field Requirements EN61000-4-11(1994): Voltage dips, short, interruption and var Requirement

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

• Low Voltage Directive 73/23/EEC

• EMC Directive 89/336/EEC

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