Agilent Technologies E364XA Series User manual

User’s Guide
Part Number: E3646-90001
January 2000.
For Safety information, Warrantie , and Regulatory information,
ee the page behind the Index.
© Copyright Agilent Technologie 2000
All Right Re erved.
Agilent E364xA Dual Output
DC Power Supplies

The Agilent Technologies E3646A/E3647A (30 watt) and E3648A/E3649A
(50 watt) are high perfor ance dual-output dual range progra able DC
power supplies with GPIB and RS-232 interfaces. The co bination of bench-
top and syste features in these power supplies provides versatile solutions
for your design and test require ents.
Convenient bench-top features
• Dual-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
• Tracking operation
• Easy-to-use controls
• Re ote voltage sensing
• Front and Rear output ter inals
• Portable, ruggedized case with non-skid feet
• Error essages available on the display
Flexible system features
• GPIB (IEEE-488) and RS-232 interfaces are standard
• SCPI (Standard Co ands for Progra able Instru ents) co patibility
• I/O setup easily done fro front-panel
• Software calibration, no internal physical adjust ents
Agilent Technologies E364xA
Dual Output DC Power Supplies

2
The Front Panel at a Glance
1 Output1 selection Key
2 Output2 selection Key
3 Low voltage range selection Key
4 High voltage range selection Key
5 Overvoltage protection Key
6 Display limit Key
7 Resolution selection Keys
8 Voltage / Current ad ust selection Key
9 Knob
10 Output On / Off Key
11 I/O Configuration Menu / Secure Key
12 View Menu / Calibrate Key
13 State Storage Menu / Local Key
14 Stored state Recall/Reset Menu
15 Tracking enabling/disabling Key

3
Front-Panel Menu/Key Reference
This section gives an overview of the front-panel keys/ enus. The enus are
designed to auto atically guide you through all para eters required to
configure a particular function or operation.
1 Output1 selection key Select the output1 voltage and current to be controlled and
monitored on the display.
2 Output2 selection key Select the output2 voltage and current to be controlled and
monitored on the display.
3 Low voltage range selection key Selects the low voltage range and allows its full
rated output to the output terminals.
4 Hig voltage range selection key Selects the high voltage range and allows its full
rated output to the output terminals.
5 Overvoltage protection key Enables or disables the overvoltage protection function,
sets trip voltage level, and clears the overvoltage condition.
6 Display limit key Shows voltage and current limit values on the display and allows
the knob ad ustment for setting limit values.
7 Resolution selection keys Move the flashing digit to the right or left. Ad ust the
scrolling speed of the text being displayed in the View menu.
8 Voltage/Current adjust selection key Selects the knob control function for voltage
or current ad ustment.
9Knob Increases or decreases the value of the flashing digit by turning clockwise or
counter clockwise.
10 Output On/Off key Enables or disables the power supply output. This key toggles
between on and off.
11 I/O Configuration / Secure key3 Configures the power supply for remote interfaces
/ or secures or unsecures the power supply for calibration.
12 View menu / Calibrate key2 Views the error codes and the text of the error message,
calibration string, and system firmware revision / or enables calibration mode.
13 State storage menu / Local key1 Stores up to five power supply’s states and assigns
a name to each of the storage locations / or returns the power supply to local mode
from remote interface mode.
14 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).
15 Tracking enabling/disabling key Enable / disable the track mode of the outputs.
1The key can be used as the ‘‘Local’’ key when the power supply is in the remote
interface mode.
2You can enable the ‘‘calibration mode’’ by holding down this key when you turn on the
power supply.
3You can use it as the ‘‘Secure’’ or ‘‘Unsecure’’ key when the power supply is in the
calibration mode.

4
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 output and voltage range using the output selection keys
and voltage range selection keys after turning on the power supply.
2Press 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 key again.
4Set the knob to current control mode by pressing 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 key to enable the output. After about seconds, the display will
go to output monitoring mode automatically to display the voltage and current
at the output.
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.
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
Or
1
2
Or
Display
Limit
Display
Limit
Current
Voltage
On/Off
Output

5
isplay Annunciators
Adrs Power supply is addressed to listen or talk over a remote interface.
Rmt Power supply is in remote interface mode.
8V*/35V** Shows the low voltage range is selected.
20V*/60** Shows the high voltage range is selected.
OUT1 The output1 is selected for front-panel or remote operation.
OUT2 The output2 is selected for front-panel or remote operation.
OVP1 The output1 overvoltage protection function is enabled when the
OVP1 annunciator turns on or the overvoltage protection circuit has
caused the power supply to shutdown when the annunciator blinks.
OVP2 The output2 overvoltage protection function is enabled when the
OVP2 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 56 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.
TRACK The output1 and output2 are in track mode.
To review the display annunciators, hold down key as you turn on
the power supply.
Display
Limit
*For E3646A/48A models. **For E3647A/49A models.

6
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 address (see chapter 3).
• Set the RS-232 baud rate and parity (see chapter 3).
1 AC inlet
2 Power-line fuse-holder assembly
3 Power-line module
4 Output 1 Rear output terminals
5 Output 2 Rear output terminals
6 GPIB (IEEE-488) interface connector
7 RS-232 interface connector
I/O
Config

7
In This Book
Quick Start Chapter 1 helps you get fa iliar 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 detail the use of front-panel
keys and how they are used to operate the power supply fro the front panel.
This chapter also shows how to configure the power supply for the re ote
interface and gives a brief introduction to the calibration features.
Remote Interface Reference Chapter 4 contains reference infor ation to
help you progra the power supply over the re ote interface. This chapter
also explains how to progra for status reporting.
rror Messages Chapter 5 lists the error essages that ay appear as you
are working with the power supply. Each listing contains infor ation to help
you diagnose and solve the proble .
Application Programs Chapter 6 contains so e re ote interface
applications to help you develop progra s 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 co ponent locator diagra & sche atics.
If you have questions relating to the operation of the power supply, call
1-800-452-4844 in the United tates, or contact your nearest Agilent
Technologies ales 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 tates, or contact your nearest Agilent Technologies ales Office.

8

9
Contents
Contents
Chapter 1 Quick Start
Preli inary 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 Rack Mount the Instru ent - - - - - - - - - - - - - - - - - - - - - - - - - - 23
Chapter 2 General Information
Safety Considerations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27
Safety and EMC Require ents - - - - - - - - - - - - - - - - - - - - - - - - 27
Options and Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Options- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Initial Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Cooling and Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Output Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32
Current Ratings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32
Voltage Drops - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33
Load Consideration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33
Re ote Voltage Sensing Connections - - - - - - - - - - - - - - - - - - 34
Multiple Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
Chapter 3 Front-Panel Operation and Features
Front-Panel Operation Overview - - - - - - - - - - - - - - - - - - - - - - - - - 39
Constant Voltage Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
Constant Current Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 42
Tracking Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44
View Menu Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45
Changing Display Mode- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45
Viewing the Errors- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46
Viewing the Fir ware Revision - - - - - - - - - - - - - - - - - - - - - - - 46
Viewing the Calibration String - - - - - - - - - - - - - - - - - - - - - - - - 47
Configuring the Re ote Interface - - - - - - - - - - - - - - - - - - - - - - - - 48
GPIB Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 48
RS-232 Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
Storing and Recalling Operating States - - - - - - - - - - - - - - - - - - - - 50

10
Contents
Contents
Progra ing Overvoltage Protection - - - - - - - - - - - - - - - - - - - - - 52
Setting the OVP Level and Enable the OVP Circuit - - - - - - - - 52
Checking OVP Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 53
Clearing the Overvoltage Condition - - - - - - - - - - - - - - - - - - - - 53
Disabling the Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56
Disconnecting the Output Using an External Relay - - - - - - - - 56
Syste -Related Operations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57
State Storage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57
Self-Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 58
Error Conditions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 58
Fir ware Revision Query - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59
SCPI Language Version - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59
GPIB Interface Reference - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 60
RS-232 Interface Reference- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 61
RS-232 Configuration Overview - - - - - - - - - - - - - - - - - - - - - - - 61
RS-232 Data Fra e For at - - - - - - - - - - - - - - - - - - - - - - - - - - - 61
Connection to a Co puter or Ter inal - - - - - - - - - - - - - - - - - 62
RS-232 Troubleshooting- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 63
Calibration Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 64
Calibration Security - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 64
To Unsecure for Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - 65
To Secure Against Calibration - - - - - - - - - - - - - - - - - - - - - - - - - 66
Calibration Count- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 67
Calibration Message- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 68
Chapter 4 Remote Interface Reference
SCPI Co and Su ary- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 71
Si plified Progra ing Overview- - - - - - - - - - - - - - - - - - - - - - - - 77
Using the APPLy Co and- - - - - - - - - - - - - - - - - - - - - - - - - - - 77
Using the Low-Level Co ands- - - - - - - - - - - - - - - - - - - - - - - 77
Reading a Query Response - - - - - - - - - - - - - - - - - - - - - - - - - - - 78
Selecting a Trigger Source- - - - - - - - - - - - - - - - - - - - - - - - - - - - 78
Power Supply Progra ing Ranges- - - - - - - - - - - - - - - - - - - - 79
Using the APPLy Co and - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 80
Output Setting and Operation Co ands - - - - - - - - - - - - - - - - - - 81
Triggering- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 87
Trigger Source Choices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 87
Triggering Co ands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 89
Syste -Related Co ands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 90
State Storage Co ands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 93
Calibration Co ands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 94
Interface Configuration Co ands - - - - - - - - - - - - - - - - - - - - - - - 97

11
Contents
Contents
The SCPI Status Registers - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 98
What is an Event Register? - - - - - - - - - - - - - - - - - - - - - - - - - - - 98
What is an Enable Register? - - - - - - - - - - - - - - - - - - - - - - - - - - 98
What is a Multiple Logical Output? - - - - - - - - - - - - - - - - - - - - 98
SCPI Status Syste - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 100
The Questionable Status Register- - - - - - - - - - - - - - - - - - - - - 101
The Standard Event Register - - - - - - - - - - - - - - - - - - - - - - - - 103
The Status Byte Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - 104
Using Service Request (SRQ) and Serial POLL - - - - - - - - - - 105
Using *STB? to Read the Status Byte - - - - - - - - - - - - - - - - - - 106
Using the Message Available Bit (MAV) - - - - - - - - - - - - - - - - 106
To Interrupt Your Bus Controller Using SRQ - - - - - - - - - - - 106
To Deter ine When a Co and Sequence is Co pleted - 107
Using *OPC to Signal When Data is in the Output Buffer - - 107
Status Reporting Co ands - - - - - - - - - - - - - - - - - - - - - - - - - - - 108
An Introduction to the SCPI Language - - - - - - - - - - - - - - - - - - - 111
Co and For at Used in This Manual- - - - - - - - - - - - - - - - 112
Co and Separators - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 113
Using the MIN and MAX Para eters - - - - - - - - - - - - - - - - - - 113
Querying Para eter Settings - - - - - - - - - - - - - - - - - - - - - - - - 114
SCPI Co and Ter inators - - - - - - - - - - - - - - - - - - - - - - - - 114
IEEE-488.2 Co on Co ands - - - - - - - - - - - - - - - - - - - - - 114
SCPI Para eter Types - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 115
Halting an Output in Progress - - - - - - - - - - - - - - - - - - - - - - - - - - 116
SCPI Confor ance Infor ation- - - - - - - - - - - - - - - - - - - - - - - - - 117
IEEE-488 Confor ance Infor ation - - - - - - - - - - - - - - - - - - - - - 120
Chapter 5 rror Messages
Execution Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 123
Self-Test Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 129
Calibration Errors- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 130
Chapter 6 Application Programs
Exa ple Progra for C and C++- - - - - - - - - - - - - - - - - - - - - - - - 135
Exa ple Progra for Excel 97 - - - - - - - - - - - - - - - - - - - - - - - - - 139
Chapter 7 Tutorial
Overview of this Power Supply Operation - - - - - - - - - - - - - - - - 147
Output Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 149
Unregulated State - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 151
Unwanted Signals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 151
Extending the Voltage and Current Range - - - - - - - - - - - - - - - - 153
Series Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 153

12
Contents
Contents
Parallel Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 153
Re ote Progra ing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 154
Chapter 8 Specifications
Perfor ance Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - 159
Supple ental Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - 161
Appendix Service Information
Operating Checklist- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 167
Is the Power Supply Inoperative? - - - - - - - - - - - - - - - - - - - - - 167
Does the Power Supply Fail Self-Test? - - - - - - - - - - - - - - - - - 167
Types of Service Available - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 168
Standard Repair Service (worldwide)- - - - - - - - - - - - - - - - - - 168
Express Exchange (U.S.A. only) - - - - - - - - - - - - - - - - - - - - - - 168
Repacking for Ship ent - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 169
Electrostatic Discharge (ESD) Precautions- - - - - - - - - - - - - - - - 170
Surface Mount Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 170
To Replace the Power-Line Fuse - - - - - - - - - - - - - - - - - - - - - - - - 170
Troubleshooting Hints- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 171
Unit Reports Errors 740 to 750 - - - - - - - - - - - - - - - - - - - - - - - 171
Unit Fails Self-Test- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 171
Bias Supplies Proble s - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 171
Self-Test Procedures - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 172
Power-On Self-Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 172
Co plete Self-Test- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 172
General Disasse bly- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 174
Reco ended Test Equip ent - - - - - - - - - - - - - - - - - - - - - - - - - 175
Test Considerations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 176
Operation Verification and Perfor ance Tests - - - - - - - - - - - - - 176
Measure ent Techniques - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 177
Setup for Most Tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 177
Current-Monitoring Resistor - - - - - - - - - - - - - - - - - - - - - - - - - 177
General Measure ent Techniques - - - - - - - - - - - - - - - - - - - - 178
Electronic Load - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 178
Progra ing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 178
Constant Voltage (CV) Verifications- - - - - - - - - - - - - - - - - - - - - - 179
Constant Voltage Test Setup - - - - - - - - - - - - - - - - - - - - - - - - - 179
Voltage Progra ing and Readback Accuracy - - - - - - - - - - 179
CV Load Effect (Load Regulation) - - - - - - - - - - - - - - - - - - - - 180
CV Source effect (Line Regulation)- - - - - - - - - - - - - - - - - - - - 181
CV PARD (Ripple and Noise) - - - - - - - - - - - - - - - - - - - - - - - - 182
Load Transient Response Ti e - - - - - - - - - - - - - - - - - - - - - - - 184

13
Contents
Contents
Constant Current (CC) Verifications - - - - - - - - - - - - - - - - - - - - - 185
Constant Current Test Setup - - - - - - - - - - - - - - - - - - - - - - - - 185
Current Progra ing and Readback Accuracy - - - - - - - - - 185
CC Load Effect (Load Regulation) - - - - - - - - - - - - - - - - - - - - 186
CC Source Effect (Line Regulation) - - - - - - - - - - - - - - - - - - - 187
CC PARD (Ripple and Noise) - - - - - - - - - - - - - - - - - - - - - - - - 188
Co on Mode Current Noise - - - - - - - - - - - - - - - - - - - - - - - - - - 189
Perfor ance Test Record for Your Power Supply - - - - - - - - - - 190
CV Perfor ance Test Record - - - - - - - - - - - - - - - - - - - - - - - - 190
CC Perfor ance Test Record - - - - - - - - - - - - - - - - - - - - - - - - 191
Calibration Reference- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 192
Agilent Technologies Calibration Services- - - - - - - - - - - - - - 192
Calibration Interval - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 192
To Unsecure the Power Supply Without the Security Code 192
General Calibration/Adjust ent Procedure - - - - - - - - - - - - - - - 193
Front Panel Voltage and Current Calibration- - - - - - - - - - - - 194
Calibration Record for Your Power Supply- - - - - - - - - - - - - - - - 198
Calibration Error Messages - - - - - - - - - - - - - - - - - - - - - - - - - - - - 199
Replaceable Parts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 200
To Order Replaceable Parts - - - - - - - - - - - - - - - - - - - - - - - - - 200
Sche atics and Diagra s - - - - - - - - - - - - - - - - - - - - - - - - - - - 200
E3646A/47A/48A/49A Power Supply Asse bly - - - - - - - - - - 201
Manufacturer’s List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 202

14
Contents
Contents

1
Quick Start

16
Quick Start
One of the first things you will want to do with your power supply is to beco e
acquainted with the front panel. The exercises in this chapter prepare the
power supply for use and help you get fa iliar with so e 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 ade prior to
operation.
Throughout this chapter the key to be pressed is shown in the left margin.

Chapter 1 Quick Start
Preliminary Checkout
17
1
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 ite s with your power supply. If
anything is issing, contact your nearest Agilent Technologies Sales Office.
One power cord for your location.
This ser’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 perfor s
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.
3 Perform a complete self-test.
The complete self-test perfor s a ore extensive set of tests than those
perfor ed at power-on. Hold down as you turn on the power supply and
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.
Display
Limit
Display
Limit

Chapter 1 Quick Start
Output Checkout
18
Output Checkout
The following procedures check to ensure that the power supply develops its
rated outputs and properly responds to operation fro the front panel. For
co plete perfor ance and verification tests, refer to the Service Information.
Note: If an error has been detected during the output checkout procedures,
the ERROR annunciator will turn on. See "Error Messages" starting on page
121 in chapter 5 for ore infor ation.
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 outputs are
disabled (the OFF annunciator turns on); its output1 and low voltage range are
selected. The annunciator OVP1, OVP2, CV, OUT1, and low voltage range
indication annunciator turn on (for exa ple, 8V annunciator turns on for the
E3646A odel); and the knob is selected for voltage control.
2 nable the outputs.
The OFF annunciator turns off and the CV annunciator turns on. Notice that
the display is in the meter ode. ‘‘Meter ode’’ eans 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 volt eter
responds to knob control and the a eter indicates nearly zero. The flashing
digit can be adjusted by turning the knob.
4 nsure that the voltage can be adjusted from zero to the full rated
value by adjusting the knob.
1You can use the resolution selection keys to move the flashing digit to the
right or left when setting the voltage.
Power
On/Off
Output
1

Chapter 1 Quick Start
Output Checkout
19
1
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 OFF annunciator is on
2 Connect a short across (+) and (-) output terminals with an insulated
test lead.
Use a wire size sufficient to handle the axi u current (See "Table 2-1 Wire
Rating" on page 32 in chapter 2).
3 nable the output.
The CV or CC annunciator turns on depending on the resistance of the test
lead. Notice that the display is in the meter ode.
4 Adjust the voltage limit value to 1.0 volt.
Set the display to the limit ode (the Limit annunciator will be flashing).
Adjust the voltage li it to 1.0 volt to assure CC operation. The CC annunciator
will turn on. To go back to nor al ode, press the key again or let the
display ti e 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
ode (the Limit annunciator is off). Check that the a eter responds to knob
control and the volt eter indicates nearly zero (the volt eter will show the
voltage drop caused by the test lead). The flashing digit can be adjusted by
turning the knob.
6 nsure 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.
1You can use the resolution selection keys to move the flashing digit to the
right or left when setting the current.
Power
On/Off
Output
Display
Limit
Display
Limit
Current
Voltage
1