Agilent Technologies E3633A User manual

The Agilent E3633A and Agilent E3634A are high performance 200 watt single-
output dual range programmable DC power supplies with 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-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

ii
The Front Panel at a Glance
1 8V/20A range selection key (E3633A)
25V/7A range selection key (E3634A)
220V/10A range selection key (E3633A)
50V/4A range selection key (E3634A)
3Overvoltage protection key
4Overcurrent protection key
5Display limit key
6Recall operating state key
7 Store operating state/Local key
8Error/Calibrate key
9I/O Configuration/Secure key
10 Output On/Off key
11 Control knob
12 Resolution selection keys
13 Voltage/current adjust selection key

iii
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 key1Stores an operating state in location ‘‘1’’,
‘‘2’’, or ‘‘3’’ / or returns the power supply to local mode from remote interface
mode.
8 Error / Calibrate key2Displays 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 key3Configures 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.
1
The key can be used as the ‘‘ Local ’’ key when the power supplyis in the remote
interface mode.
2
You can enable the ‘‘calibration mode’’ by holding down this key when you
turn on the power supply.
3
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

iv
Front-Panel Voltage and Current Limit Settings
You can set the voltage and current limit values from the front panel using the
following method.
1Select the desired range using the range selection keys after turning on the
power supply.
2Press the key to show the limit values on the display.
3Move 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.
4Set the knob to current control mode by pressing the key.
5Move 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.
6Press the key to enable the output. After about 5 seconds, the display
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
key again.
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.
Use the voltage/current adjust selection key, the resolution selection keys,
and the control knob to change the voltage and current limit values.
Display
Limit
Display
Limit
Voltage
Current
Output
On/Off
Output
On/Off

v
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
the power supply.
Display
Limit

vi
The Rear Panel at a Glance
Use the front-panel key to:
• 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).
1Power-line voltage setting
2Power-line fuse-holder assembly
3AC inlet
4Power-line module
5GPIB (IEEE-488) interface connector
6RS-232 interface connector
7Rear output terminals
I/O
Config

vii
In This Book
General Information Chapter 1 contains a general description of your
power supply. This chapter also provides instructions forcheckingyour power
supply, connecting to ac power, and selecting power-line voltage.
Initial Operation Chapter 2 ensures that thepower supply develops its rated
outputs and properly responds to operation from the front panel.
Front-Panel Operation Chapter 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
1-800-829-4444 in the United States, or contact your nearest Agilent
Technologies Sales Office.
If your Agilent E3633A or Agilent E3634A fails within on e 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.

viii

ix
Contents
Contents
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

x
Contents
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 APPLy Command - - - - - - - - - - - - - - - - - - - - - - - - - - 80
Using the Low-Level Commands- - - - - - - - - - - - - - - - - - - - - - - 80
Reading a Query Response - - - - - - - - - - - - - - - - - - - - - - - - - - - 81
Selecting a Trigger Source- - - - - - - - - - - - - - - - - - - - - - - - - - - - 81
Power Supply Programming Ranges- - - - - - - - - - - - - - - - - - - - 82
Using the APPLy Command- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 83
Output Setting and Operation Commands - - - - - - - - - - - - - - - - - - 84
Triggering Commands- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 91
Trigger Source Choices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 91
Triggering Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 93
System-Related Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 94

xi
Contents
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
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

xii
Contents
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

1
General Information

2
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
3
1
• 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 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
0EM 115 Vac ± 10%, 47-63 Hz input voltage
0E3 230 Vac ± 10%, 47-63 Hz input voltage
0E9 100 Vac ± 10%, 47-63 Hz input voltage
1CM Rack mount kit (Agilent part number 5063-9243)
0L2 Extra English manual set (local language manual files are included
on the CD-ROM, Agilent part number 5964-8251)
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 GPIB cable, 1 m (3.3 ft.)
10833B GPIB cable, 2 m (6.6 ft.)
34398A 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
34399A 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
4
Description
The Agilent E3633A and Agilent E3634A DC power supplies feature a
combination of programming capabilities and linear power supply
performance thatmakes them ideal for powersystems 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
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1
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
6
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
cabinet. You can guard against unauthorized calibration by using the “Secured”
calibration protection function.

Chapter 1 General Information
Installation
7
1
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 packingmaterials in case the power supplyhas to bereturned
to Agilent Technologies inthefuture. Ifyou returnthe powersupply forservice,
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
8
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.