Agilent Technologies U8001A Manual

Agilent Technologies
Agilent
U8001A/U8002A
Single Output
DC Power Supplies
User’s and Service Guide

II U8001A/U8002A User’s and Service Guide
Notices
© Agilent Technologies, Inc. 2008
No part of this manual may be reproduced in
any form or by any means (including elec-
tronic storage and retrieval or translation
into a foreign language) without prior agree-
ment and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
Manual Part Number
U8001-90001
Edition
First Edition, May 22, 2008
Printed in Malaysia
Agilent Technologies, Inc.
3501 Stevens Creek Blvd.
Santa Clara, CA 95052 USA
Warranty
The material contained in this docu-
ment is provided “as is,” and is sub-
ject to being changed, without notice,
in future editions. Further, to the max-
imum extent permitted by applicable
law, Agilent disclaims all warranties,
either express or implied, with regard
to this manual and any information
contained herein, including but not
limited to the implied warranties of
merchantability and fitness for a par-
ticular purpose. Agilent shall not be
liable for errors or for incidental or
consequential damages in connec-
tion with the furnishing, use, or per-
formance of this document or of any
information contained herein. Should
Agilent and the user have a separate
written agreement with warranty
terms covering the material in this
document that conflict with these
terms, the warranty terms in the sep-
arate agreement shall control.
Technology Licenses
The hardware and/or software described in
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Items) and DFARS 227.7202-3 (Rights in
Commercial Computer Software or Com-
puter Software Documentation).
Safety Notices
CAUTION
A CAUTION notice denotes a haz-
ard. It calls attention to an operat-
ing procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly per-
formed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated condi-
tions are fully understood and
met.
Microsoft ®is a U.S. registered trademark
of Microsoft Corporation.

U8001A/U8002A User’s and Service Guide III
Safety Symbols
The following symbols on the instrument and in the documentation
indicate precautions which must be taken to maintain safe operation of
the instrument.
Direct current Off (supply)
Alternating current On (supply)
Both direct and alternating
current
Equipment protected throughout
by double insulation or reinforced
insulation.
Three-phase alternating current Caution, risk of electric shock.
Earth (ground) terminal Caution, risk of danger (refer to
this manual for specific Warning
or Caution information.
Protective conductor terminal Caution, hot surface.
Frame or chassis terminal Out position of a bi-stable push
control.
Equipotentiality In position of a bi-stable push
control.

IV U8001A/U8002A User’s and Service Guide
General Safety Information
The following general safety precautions must be observed during all
phases of operation, service and repair of this instrument. Failure to
comply with these precautions or specific warnings elsewhere in this
manual violates safety standards of design, manufacture and intended use
of the instrument. Agilent Technologies assumes no liability for
customer’s failure to comply with these requirements.
WARNING
• Do not use the device if it appears damaged or defective.
• Observe all markings on the device before connecting any wiring to the
device.
• Do not operate the device in the presence of flammable gases or fumes.
• Do not install substitute parts or perform any unauthorized modification to
the device.
• Use only the power adapter provided by the manufacturer to avoid any
unexpected hazards.
CAUTION
• Use the device with the cables provided.
• Repair or service that this not covered in this manual should only be
performed by qualified personnels.

U8001A/U8002A User’s and Service Guide V
Environment Conditions
This instrument is designed for indoor use in an installation category II,
pollution degree 2 area. Table 1 shows general environment requirements.
Table 1 Environment Requirements
Environment Conditions Requirements
Operating Temperature 0 °C to 40 °C (for full rated output)
40 °C to 55 °C (for derated output)
Operating Relative Humidity (max) Up to 95%
Storage Temperature –20 °C to 70 °C
Altitude Up to 2000 m
CAUTION
The Agilent U8001A/U8002A single output DC power supplies comply
with the following safety and EMC requirements:
• IEC 61326:2002 / EN 61326:1997+A1:1998+A3:2003
• CISPR 11:1990 / EN 55011:1990
• Canada: ICES-001:2004
• Australia / New Zealand: AS/NZS CISPR11:2004
• IEC 61010-1:2001 / EN 61010-1:2001 (2nd Edition)
• Canada: CAN/CSA-C22.2 No. 61010-1-04
• USA: ANSI/UL 61010-1:2004

VI U8001A/U8002A User’s and Service Guide
Regulatory Markings
The CE mark is a registered trademark of the European
Community. This CE mark shows that the product complies
with all the relevant European Legal Directives.
ICES/NMB-001 indicates that this ISM device complies with
Canadian ICES-001.
The CSA mark is a registered trademark of the Canadian
Standards Association. A CSA mark indicates that the product
is certified for Canadian markets, to the applicable Canadian
standards.
The C-tick mark is a registered trademark of the Spectrum
Management Agency of Australia. This signifies compliance
with the Australia EMC Framework regulations under the
terms of the Radio Communication Act of 1992.
This instrument complies with the WEEE Directive
(2002/96/EC) marking requirement. This affixed product label
indicates that you must not discard this electrical/electronic
product in domestic household waste.

U8001A/U8002A User’s and Service Guide VII
Waste Electrical and Electronic Equipment (WEEE) Directive
2002/96/EC
This instrument complies with the WEEE Directive (2002/96/EC) marking
requirement. This affixed product label indicates that you must not discard
this electrical/electronic product in domestic household waste.
Product Category:
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
The affixed product label is shown as below:
Do not dispose in domestic household waste
To return this unwanted instrument, contact your nearest Agilent office, or
visit:
www.agilent.com/environment/product
for more information.

VIII U8001A/U8002A User’s and Service Guide
DECLARATION OF CONFORMITY
According to EN ISO/IEC 17050-1:2004
Generic example
Manufacturer’s Name: Agilent Technologies Microwave Products (M) Sdn. Bhd
Manufacturer’s Address: Bayan Lepas Free Industrial Zone,
11900, Bayan Lepas, Penang, Malaysia
Declares under sole responsibility that the product as originally delivered
Product Name: Single Output DC Power Supplies
Models Number: U8001A, U8002A
Product Options: This declaration covers all options of the above product(s)
complies with the essential requirements of the following applicable European Directives, and
carries the CE marking accordingly:
Low Voltage Directive (2006/95/EC)
EMC Directive (2004/108/EC)
and conforms with the following product standards:
EMC Standard
StandardStandard
Standard
Limit LimitLimit
Limit
IEC 61326:2002 / EN 61326:1997+A1:1998+A2:2001+A3:2003
CISPR 11:1990 / EN55011:1990 Class A Group 1
IEC 61000-4-2:1995 / EN 61000-4-2:1995 4 kV CD, 8 kV AD
IEC 61000-4-3:1995 / EN 61000-4-3:1996 3 V/m, 80-1000 MHz
IEC 61000-4-4:1995 / EN 61000-4-4:1995 0.5 kV signal lines, 1 kV power lines
IEC 61000-4-5:1995 / EN 61000-4-5:1995 0.5 kV line-line, 1 kV line-ground
IEC 61000-4-6:1996 / EN 61000-4-6:1996 3 V, 0.15-80 MHz
IEC 61000-4-11:1994 / EN 61000-4-11:1994 1 cycle / 100%
Canada: ICES-001:2004
Australia/New Zealand: AS/NZS CISPR11:2004
The product was tested in a typical configuration with Agilent Technologies test systems.
Safety
IEC 61010-1:2001 / EN 61010-1:2001
Canada: CAN/CSA-C22.2 No. 61010-1-04
USA: ANSI/UL 61010-1:2004
206349
This DoC applies to above-listed products placed on the EU market after:
26-May-2008
Date
Tay Eng Su
Quality Manager
For further information, please contact your local Agilent Technologies sales office, agent or distributor,
or Agilent Technologies Deutschland GmbH, Herrenberger Straße 130, 71034 Böblingen, Germany.
Template: A5971-5302-2, Rev. E U8001A DoC Revision 1.0

U8001A/U8002A User’s and Service Guide IX
Product Regulations
Performance Criteria
IEC 61326-1:2002 / EN 61326-1:1997+A1:1998+A2:2001+A3:2003
CISPR 11:1990 / EN 55011:1990
– Group 1 Class A
IEC 61000-4-2:1995 / EN 61000-4-2:1995 (ESD 4kV CD, 8kV AD) A
IEC 61000-4-3:1995 / EN 61000-4-3:1996 (3V/m, 80% AM) A
IEC 61000-4-4:1995 / EN 61000-4-4:1995 (EFT 0.5kV line-line, 1kV line-earth) A
IEC 61000-4-5:1995 / EN 61000-4-5:1995 (Surge 0.5kV line-line, 1kV line-earth) A
IEC 61000-4-6:1996 / EN 61000-4-6:1996 (3V, 0.15~80 MHz, 80% AM, power line) A
IEC 61000-4-11:1994 / EN 61000-4-11:1994 (Dips 1 cycle, 100%) A
Canada: ICES-001:2004
Australia/New Zealand: AS/NZS CISPR11:2004
EMC
IEC 61010-1:2001 / EN 61010-1:2001
Canada: CAN/CSA-C22.2 No. 61010-1-04
USA: ANSI/UL 61010-1:2004
Safety
Additional Information:
The product herewith complies with the essential requirements of the Low Voltage Directive 2006/95/EC and the
EMC Directive 2004/108/EC and carries the CE Marking accordingly (European Union).
1
Performance Criteria:
A Pass - Normal operation, no effect.
B Pass - Temporary degradation, self recoverable.
C Pass - Temporary degradation, operator intervention required.
D Fail - Not recoverable, component damage.
N/A – Not applicable
Notes:
Regulatory Information for Canada
ICES/NMB-001:2004
This ISM device complies with Canadian ICES-001.
Cet appareil ISM est confomre à la norme NMB-001 du Canada.
Regulatory Information for Australia/New Zealand
This ISM device complies with Australian/New Zealand AS/NZS CISPR11:2004

X U8001A/U8002A User’s and Service Guide
In This Guide…
This guide provides step- by- step set up and configuration
instructions that get you familiarized with the operations of the
Agilent U8001A/U8002A single output DC power supplies. This
guide also contains service information and troubleshooting
guidelines that help to resolve your problems during startup
configurations.
1 Quick Start
Chapter 1 provides preliminary checkout, output checkout, line
voltage conversion, and instruction to rack- mount for the
U8001A/U8002A single output DC power supplies.
2 General Information
Chapter 2 provides general description of the instrument, front
and rear panel overview, display annunciators, and installation
guidelines for the U8001A/U8002A single output DC power
supplies.
3 Operations and Features
Chapter 3 provides detailed description of the operations and
features for the U8001A/U8002A single output DC power
supplies.
4 Specifications and Characteristics
Chapter 4 lists the power supply’s performance specifications
and the supplemental characteristics of the equipment.
5 Service Guide
Chapter 5 contains service information for the U8001A/U8002A
single output DC power supplies, including warranty
information, general diassemble, verification steps to
troubleshoot the connectivity and functionality, detailed
calibration procedures for your power supply, related
documentation, and Agilent contacts.

U8001A/U8002A User’s and Service Guide XI
Contents
Chapter 1 Quick Start
Preliminary Checkout 2
Output Checkout 3
Voltage Output Checkout 3
Current Output Checkout 4
If the Power Supply Does Not Turn On 5
To Rack-mount the Instrument 6
Chapter 2 General Information
Front Panel at a Glance 8
Rear Panel at a Glance 9
Display Annunciators 10
Description 11
Installation 13
Initial inspection 13
Cooling and location 14
Output Connections 15
Voltage drops 15
Chapter 3 Operations and Features
Constant Voltage Operation 18
Constant Current Operation 20
Memory Operations 22
Storing Operating State 22

XII U8001A/U8002A User’s and Service Guide
Contents
Recalling Operating State 23
Programming Over Voltage Protection 24
Programming Over Current Protection 26
Keylock Operation 28
Backlight Operation 29
System Related Operations 30
Reset to factory defaults 30
Power-on self-test 30
Chapter 4 Specifications and Characteristics
Performance Specifications 32
Supplemental Characteristics 33
Chapter 5 Service Guide
Equipment Warranty 36
Replacement Parts 38
Troubleshooting 39
Line Voltage Conversion 40
Performance Verification and Calibration 43
Constant Current (CC) Verification 56
Voltage Calibration 62
Current Calibration 64
Appendix
Appendix A: List of Error Codes 68

1
Agilent Technologies
Agilent U8001A/U8002A Sinlge Output DC Power Supplies
User’s and Service Guide
1
Quick Start
Preliminary Checkout 2
Output Checkout 3
If the Power Supply Does Not Turn On 5
To Rack-mount the Instrument 6
This chapter is intended for both the experienced and
inexperienced users because it calls attention to certain checks
that should be made prior to operation.

2 U8001A/U8002A User’s and Service Guide
1 Quick Start
Preliminary Checkout
The following steps help you to validate that the power supply is
ready for use.
1Check the list of supplied item.
Verify that you have received the following items together
with your power supply. If anything is found missing, contact
your nearest Agilent Technologies Sales Office.
•Power cord
•Certificate of Calibration
•Product Reference CD- ROM
2Connect the power cord and turn on the power supply.
The front- panel display will light up while the power supply
performs its power- on self- test. The firmware revision is also
displayed. If the power supply does not turn on properly, see
page 5.
NOTE
The power supply is shipped from the factory with a power- line cord that
has a plug approriate 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.

Quick Start 1
U8001A/U8002A User’s and Service Guide 3
Output Checkout
The following procedures check to ensure that the power supply
develops its rated outputs and properly responds to operation
from the front panel. For complete performance and
verification tests, refer to the “Service Guide”.
Voltage Output Checkout
The following steps verify basic voltage functions with no load.
1Turn on the power supply.
The power supply is in a power- on / reset state; the output is
disabled (the OFF annunciator turns on).
2Enable the outputs.
The OFF annunciator turns off. Notice that the display is in
the meter mode. ''Meter mode'' means that the display shows
the output voltage and current limit.
3Check that the front- panel voltmeter properly responds to
knob control.
4Turn the knob clockwise or counter clockwise to check that
the voltmeter responds to knob control and the ammeter
indicates nearly zero.
5Ensure that the voltage can be adjusted from zero to the full
rated value by adjusting the knob.
NOTE
If an error has been detected during the output checkout procedures, the ERROR
annunciator will be turned on. See “Appendix A: List of Error Codes” for more
information.
NOTE
When the power supply is turned on, the last memory will be shown on the
display.

4 U8001A/U8002A User’s and Service Guide
1 Quick Start
Current Output Checkout
The following steps check basic current functions with a short
across the power supply's output.
1Turn on the power supply.
Make sure that the output is disabled. The OFF annunciator
is on.
2Connect a short across (+) and (–) output terminals with an
insulated test lead. Use a wire size sufficient to handle the
maximum current (refer to the American Wire Gauge
standard).
3Enable 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 mode.
4Adjust the voltage limit value to 1.0 volt.
Set the display to the limit mode. Adjust the voltage limit to
1.0 V to assure CC operation. The CC annunciator will be
turned on. To go back to normal mode, press the key again or
let the display time out after several seconds.
5Set 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).
6Ensure that the current can be adjusted from zero to the full
rated value.
7Turn off the power supply and remove the short from the
output terminals.

Quick Start 1
U8001A/U8002A User’s and Service Guide 5
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.
1Verify 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.
2Verify 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.
3Verify 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.
Figure 1-1 List of Rated Fuse for Line Voltages
Model Agilent Part Number Part Description
U8001A 2110-0014
2110-0006
Fuse 4.0 A T for 100 and 115 Vac
Fuse 2.0 A T for 230 Vac
U8002A 2110-0722
2110-1425
Fuse 6.25 A T for 100 and 115 Vac
Fuse 2.8 A T for 230 Vac

6 U8001A/U8002A User’s and Service Guide
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.
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 two instruments in a sliding support shelf, order
support shelf, 5063- 9255, and slide kit, 1494- 0015.

7
Agilent Technologies
Agilent U8001A/U8002A Single Output DC Power Supplies
User’s and Service Guide
2
General Information
Front Panel at a Glance 8
Rear Panel at a Glance 9
Display Annunciators 10
Description 11
Installation 13
Output Connections 15
This chapter provides general description of the instrument,
front panel overview, rear panel overview, display annunciators
and installation guidelines for U8001A/U8002A single output
DC power supplies.

8 U8001A/U8002A User’s and Service Guide
2 General Information
Front Panel at a Glance
10
1
2
4
5
68
7
39
11
12 13
10
Panels Functions
1LCD Display Displays the measurements.
2Memory To set the memory settings, enables memory recall and memory state
selection (M1, M2, M3).
3CAL Enables voltage and current calibration.
4Back Light To turn On/Off the backlight.
5Lock / Unlock Enables and disables the front panel operation.
6Over Voltage Enables and disables the over voltage protection function, sets trip
voltage and clears the over voltage condition.
7Over Current Enables and disables the over current protection function, sets trip
current and clears the over current condition.
8Display Limit Displays and sets the voltage and current limit values.
9Voltage / Current Selects the knob control function for voltage and current adjustment.
10 Output On/Off Enables and disables the power supply output.
11 Knob Increases and decreases the value of the flashing digit.
12 Power On/Off To turn On/Off the power supply.
13 Binding posts Positive, negative and ground binding posts for wire connections.