Keysight U2722A, U2723A Service Manual

Keysight U2722A/U2723A
USB Modular Source
Measure Units

Service Guide

Notices

CAUTION

WARNING

Copyright Notice

© Keysight Technologies 2009-2017
No part of this manual may be

reproduced in any form or by any
means (including electronic storage
and retrieval or translation into a
foreign language) without prior
agreement and written consent from
Keysight Technologies as governed by
United States and international
copyright laws.

Trademarks

Windows and MS Windows are U.S.
registered trademarks of Microsoft
Corporation.

Manual Part Number

U2722-90021

Edition

Edition 8, December 1, 2017

Printed in:

Printed in Malaysia

Published by:

Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia

Technology Licenses

The hard ware and/or software
described in this document are
furnished under a license and may be
used or copied only in accordance with
the terms of such license.

Declaration of Conformity

Declarations of Conformity for this
product and for other Keysight
products may be downloaded from the
Web. Go to http://www.keysight.com/

go/conformity. You can then search by

product number to find the latest
Declaration of Conformity.

U.S. Government Rights

The Software is “commercial computer
software,” as defined by Federal
Acquisition Regulation (“FAR”) 2.101.
Pursuant to FAR 12.212 and 27.405-3
and Department of Defense FAR
Supplement (“DFARS”) 227.7202, the
U.S. government acquires commercial
computer software under the same
terms by which the software is
customarily provided to the public.
Accordingly, Keysight provides the
Software to U.S. government
customers under its standard
commercial license, which is embodied
in its End User License Agreement
(EULA), a copy of which can be found
at http://www.keysight.com/find/

sweula. The license set forth in the

EULA represents the exclusive authority
by which the U.S. government may use,
modify, distribute, or disclose the
Software. The EULA and the license set
forth therein, does not require or
permit, among other things, that
Keysight: (1) Furnish technical
information related to commercial
computer software or commercial
computer software documentation that
is not customarily provided to the
public; or (2) Relinquish to, or
otherwise provide, the government
rights in excess of these rights
customarily provided to the public to
use, modify, reproduce, release,
perform, display, or disclose
commercial computer software or
commercial computer software
documentation. No additional
government requirements beyond
those set forth in the EULA shall apply,
except to the extent that those terms,
rights, or licenses are explicitly required
from all providers of commercial
computer software pursuant to the FAR
and the DFARS and are set forth
specifically in writing elsewhere in the
EULA. Keysight shall be under no
obligation to update, revise or
otherwise modify the Software. With
respect to any technical data as
defined by FAR 2.101, pursuant to FAR

12.211 and 27.404.2 and DFARS

227.7102, the U.S. government
acquires no greater than Limited Rights
as defined in FAR 27.401 or DFAR

227.7103-5 (c), as applicable in any
technical data.

Warranty

THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,” AND
IS SUBJECT TO BEING CHANGED,
WITHOUT NOTICE, IN FUTURE
EDITIONS. FURTHER, TO THE MAXIMUM
EXTENT PERMITTED BY APPLICABLE
LAW, KEYSIGHT 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 PARTICULAR
PURPOSE. KEYSIGHT SHALL NOT BE
LIABLE FOR ERRORS OR FOR
INCIDENTAL OR CONSEQUENTIAL
DAMAGES IN CONNECTION WITH THE
FURNISHING, USE, OR PERFORMANCE
OF THIS DOCUMENT OR OF ANY
INFORMATION CONTAINED HEREIN.
SHOULD KEYSIGHT 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 SEPARATE AGREEMENT SHALL
CONTROL.

Safety Information

A CAUTION notice denotes a hazard. It
calls attention to an operating
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.

A WARNING notice denotes a hazard. It
calls attention to an operating
procedure, practice, or the like that, if
not correctly performed or adhered to,
could result in personal injury or death.
Do not proceed beyond a WARNING
notice until the indicated conditions are
fully understood and met.

4 Keysight U2722A/U2723A Service Guide

Safety Symbols

The following symbols on the instrument and in the documentation indicate
precautions that must be taken to maintain safe operation of the instrument.

Direct current (DC)

Alternating current (AC) Off (supply)

Both direct and alternating current On (supply)

Three-phase alternating current Caution, risk of electric shock

Earth (ground) terminal

Equipment protected throughout by
double insulation or reinforced
insulation

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

Keysight U2722A/U2723A Service Guide 5

General Safety Information

WARNING

CAUTION

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 with specific warnings elsewhere in this manual violates safety
standards of design, manufacture, and intended use of the instrument. Keysight
Technologies assumes no liability for the customer's failure to comply with these
requirements.

– Do not use this product in any manner not specified by the manufacturer.

The protective features of this product may be impaired if it is used in a
manner not specified in the operation instructions.

– Do not operate the product in an explosive atmosphere or in the presence

of flammable gases or fumes.

– Only qualified, service-trained personnel who are aware of the hazards

involved should remove the instrument casing. Always disconnect the
power cable and any external circuits before removing the instrument
casing.

– Do not use the equipment if it does not operate properly. Ensure that the

equipment is inspected by qualified service personnel.

– Do not install substitute parts or perform any unauthorized modification

to the product. Return the product to n Keysight Sales and Service Office
for service and repair to ensure that the safety features are maintained.

– Make all connections to the unit before applying power.

– Take note of the instrument's external markings described under Safety

Symbols.

– Use the device with the provided cables.

– Repair or service that is not covered in this manual should only be

performed by qualified personnel.

– Instruments that appear damaged or defective should be made

inoperative and secured against unintended operation until they can be
repaired by qualified service personnel.

6 Keysight U2722A/U2723A Service Guide

Environmental Conditions

CAUTION

This instrument is designed for indoor use and in an area with low condensation.
The table below shows the general environmental requirements for this
instrument.

Environmental conditions Requirements

Operating temperature 0 °C to 50 °C

Operating humidity 20% to 85% RH non-condensing

Storage temperature –20 °C to 70 °C

Storage humidity 5% to 90% RH non-condensing

The U2722A/U2723A USB Modular Source Measure Units complies with the
following safety and EMC requirements.

– IEC 61326-1:2005/EN61326-1:2006

– 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

Keysight U2722A/U2723A Service Guide 7

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

The RCM mark is a registered
trademark of the Australian
Communications and Media Authority.

ICES/NMB-001 indicates that this ISM
device complies with the Canadian
ICES-001.

Cet appareil ISM est conforme a la
norme NMB-001 du Canada.

The CSA mark is a registered
trademark of the Canadian Standards
Association.

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.

8 Keysight U2722A/U2723A Service Guide

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 or 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 as shown below.

Do not dispose in domestic household waste.

To return this unwanted instrument, contact your nearest Keysight Service Center,
or visit http://about.keysight.com/en/companyinfo/environment/takeback.shtml
for more information.

Sales and Technical Support

To contact Keysight for sales and technical support, refer to the support links on
the following Keysight websites:

– www.keysight.com/find/U2722A

(product-specific information and support, software and documentation
updates)

– www.keysight.com/find/assist

(worldwide contact information for repair and service)

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10 Keysight U2722A/U2723A Service Guide

Table of Contents

Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Waste Electrical and Electronic Equipment (WEEE) Directive

2002/96/EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Product category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

1 Getting Started

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Self-calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Keysight Technologies calibration services . . . . . . . . . . . . . . . . . . . .22

Calibration interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Types of service available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Extended service contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Obtaining repair service (worldwide) . . . . . . . . . . . . . . . . . . . . . . . . .23

Repackaging for shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

2 Performance Verification and Adjustment

Performance Verification and Adjustment . . . . . . . . . . . . . . . . . . . . . . .26

Recommended test equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Test consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Voltage tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Current tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Test Record Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Source voltage mode programming and readback accuracy . . . . . .32

Source current mode programming and readback accuracy . . . . . . 33

Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Keysight U2722A/U2723A Service Guide 11

3Characteristics and Specifications

12 Keysight U2722A/U2723A Service Guide

List of Figures

Figure 2-1 Voltage test setup (no load condition) . . . . . . . . . . . .28

Figure 2-2 Current test setup (no load condition) . . . . . . . . . . . . .30

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14 Keysight U2722A/U2723A Service Guide

List of Tables

Table 2-1 Recommended test equipment . . . . . . . . . . . . . . . . . . 26

Table 2-2 Test settings for source voltage mode programming and

readback accuracy . . . . . . . . . . . . . . . . . . . . . . . . .27

Table 2-3 Test settings for source current mode programming and

readback accuracy . . . . . . . . . . . . . . . . . . . . . . . . .29

Table 2-4 Source voltage mode programming and readback

accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Table 2-5 Source current mode programming and readback

accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Keysight U2722A/U2723A Service Guide 15

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16 Keysight U2722A/U2723A Service Guide

Keysight U2722A/U2723A USB Modular Source Measure Units
Service Guide

1 Getting Started

Introduction 18

This chapter discusses the self-test and self-calibration procedure for the
U2722A/U2723A USB Modular Source Measure Units. It also provides the
information for returning your U2722A/U2723A to Keysight for calibration or
servicing.

If you have a defective module, you can return it to Keysight for repair or
replacement.

17

1 Getting Started

CAUTION

Introduction

Self-test

– A brief power-on self-test occurs automatically whenever you turn on the

– If the self-test fails, the power indicator on the front panel will start blinking.

– Self-test may be initiated remotely by sending the *TST? SCPI command to

Disconnect all connections from the output terminals before performing the
self-test procedure. Ensure that the output terminals are not connected to
any load before you turn on the U2722A/U2723A. The U2722A/U2723A must
be powered-up for at least 45 minutes before performing the self-test.

instrument. This limited test assures that the instrument is capable of
operation.

You can use the SYSTem:ERRor? query command from the remote interface to
read the error messages. If repair is required, contact a Keysight Service
Center. Please refer to the programmer’s reference guide for more information
on the error messages.

the instrument.

Keysight Measurement Manager

To start the self-test procedure using the Keysight Measurement Manager,
perform the following steps.

1 Click Tools > Sel f-Test.

18 Keysight U2722A/U2723A Service Guide

2 Click Start on the Self-Test form.

Getting Started 1

3 Click OK to continue when the message box appears.

4 Wait for a few minutes for the self-test to complete.

5 The result is displayed on the form once the self-test has completed.

Keysight U2722A/U2723A Service Guide 19

1 Getting Started

Self-calibration

To perform self-calibration using the U2722A/U2723A Keysight Measurement
Manager, perform the following steps.

1 Click Tools > Sel f-Calibration.

2 Click Start on the Self-Calibration form.

20 Keysight U2722A/U2723A Service Guide

Getting Started 1

CAUTION

3 Click OK to continue when the message box appears.

4 Wait for a few minutes for the self-calibration to complete.

5 The result is displayed on the form once the self-calibration has completed.

Disconnect all connections from the output terminals before performing
the self-calibration procedure. Ensure that the output terminals are not
connected to any load before you turn on the U2722A/U2723A. The U2722A/
U2723A must be powered-up for at least 45 minutes before performing the
self-calibration.

Keysight U2722A/U2723A Service Guide 21

1 Getting Started

Keysight Technologies calibration services

When your instrument is due for calibration, contact your local Keysight Service
Center for a low-cost recalibration. The U2722A/U2723A is supported on
automated calibration systems, which allows Keysight to provide this service at a
competitive price.

Calibration interval

A one-year interval is adequate for most applications. Accuracy specifications are
under warranty only if adjustments are made at regular calibration intervals.
Accuracy specifications will not be offered warranty beyond the one-year
calibration interval. Keysight does not recommend extending calibration intervals
beyond two years for any application. Keysight recommends that a complete
readjustment should always be performed at the calibration interval. This will
ensure that the U2722A/U2723A will remain within specifications for the next
calibration interval. The readjustment provides the best long-term stability and
accuracy.

Types of service available

If your instrument fails during the warranty period, Keysight will repair or replace it
under the terms of your warranty. After your warranty expires, Keysight offers
repair services at competitive prices.

Extended service contracts

Most Keysight products are provided with optional service contracts that extend
the coverage period after the standard warranty expires. If you have this service
contract and your instrument happens to fail during the coverage period, Keysight
will repair or replace it according to the contract.

22 Keysight U2722A/U2723A Service Guide

Obtaining repair service (worldwide)

To obtain service for your instrument (in-warranty, under service contract, or
post-warranty), contact your nearest Keysight Service Center. They will arrange to
have your unit repaired or replaced, and are able to provide warranty or repair cost
information where applicable.

To obtain warranty, service, or technical support information you can contact
Keysight at one of the following telephone numbers.

In the United States: 800 829 4444

In Europe: 31 20 547 2111

In Japan: (81) 426 56 7832

You can also use our Web link for the information on contacting Keysight
worldwide:

www.keysight.com/find/assist

Or contact your Keysight representative.

Getting Started 1

Before shipping your instrument, ensure that you acquire shipping instructions,
including the components to be shipped, from the Keysight Service Center.
Keysight recommends that you retain the original shipping carton for use in such
shipments.

Keysight U2722A/U2723A Service Guide 23

1 Getting Started

NOTE

Repackaging for shipment

If the unit is to be shipped to Keysight for service or repair, make sure that you do
the following.

– Attach a tag to the unit identifying the owner and indicating the required

– Place the unit in its original container with appropriate packaging material for

– Secure the container with strong tape or metal bands.

– If the original shipping container is not available, place your unit in a container

Keysight suggests that you always insure your shipments.

service or repair. Include the model number and full serial number.

shipping.

with at least four inches of compressible packaging material around all sides
for the instrument. Use static-free packaging materials to avoid additional
damage to your unit.

Cleaning

Clean the outer area of the instrument with a soft, lint-free, and slightly
dampened cloth. Do not use detergent. Disassembly is not required for cleaning.

24 Keysight U2722A/U2723A Service Guide

Keysight U2722A/U2723A USB Modular Source Measure Units
Service Guide

2 Performance Verification

and Adjustment

Performance Verification and Adjustment 26
Performance Verification 27
Test Record Forms 32
Adjustment 34

The performance verification procedures described in this chapter verify that the
U2722A/U2723A USB Modular Source Measure Units is operating normally and is
within its warranted specifications.

25

2 Performance Verification and Adjustment

Performance Verification and Adjustment

This section contains the performance verification and adjustment procedures.
If the U2722A/U2723A fails any of the tests or if any abnormal test results are
obtained, return the unit to the Keysight Service Center for readjustment.
Readjustment can also be carried out using Keysight Measurement Manager
revision 1.7 or above.

Recommended test equipment

The recommended test equipment for the performance verification is listed in the
table below. If the exact equipment is not available, substitute the performance
verification standards of equivalent requirement(s).

Table 2-1 Recommended test equipment

Equipment Requirement(s) Recommended model Purpose Used

Digital multimeter
(DMM)

Test consideration

– 8½ digits resolution Keysight 3458A Measures DC voltage

and current

For optimum performance, all procedures should comply with the following
recommendations.

– Ensure that the ambient temperature is stable and between 22 °C and 28 °C.

The ideal temperature for performing performance verification should be 25 °C
± 1 °C.

– Make sure that the ambient relative humidity is less than 80%.

– Allow a three-hour warm-up period before performance verification.

– Keep the test connection cables as short as possible.

Performance
verification and
adjustment

26 Keysight U2722A/U2723A Service Guide

Performance Verification and Adjustment 2

NOTE

Performance Verification

Voltage tests

Test each output channel individually. Refer to the appropriate test record form.

Source voltage mode programming and readback accuracy

This test verifies that the voltage programming and readback through the USB are
within published specifications.

Test settings

Tab le 2-2 Test settings for source voltage mode programming and readback accuracy

Keysight 3458A settings

Function Range

DC voltage 1 V (for U2722A/U2723A drives ≤ 1 V)

10 V (for U2722A/U2723A drives ≤ 10 V)

[a] Use the highest resolution available on the DMM.

[a]

Keysight U2722A/U2723A Service Guide 27

2 Performance Verification and Adjustment

SMU

+S

+

–

–S

DMM

+

–

Test setup

The test setup for no load condition is shown in the following figure.

Figure 2-1 Voltage test setup (no load condition)

Test procedure

1 Turn off the U2722A/U2723A. Connect the DMM to the output to be tested

(refer to Figure 2-1). Ensure that no load is connected. Turn on the U2722A/
U2723A.

2 Configure the selected output as shown in the following.

a Configure the NPLC to 10.

b Configure the voltage range.

c Configure the current range.

d Program the clamp current, I

e Program the drive voltage, V

clamp

drive

.

.

3 Enable the output.

4 Wait for a few seconds for the output to settle.

5 Record the voltage reading on the DMM, V

meas

.

6 Read back the drive voltage over the USB.

7 Record the readback voltage reading over the USB, V

8 Compute (V

meas

– V

drive

) and (V

rdbk

– V

). Compare the values with the test

meas

rdbk

.

limit values.

28 Keysight U2722A/U2723A Service Guide

Performance Verification and Adjustment 2

9 Repeat step 2 through step 8 for each iteration to complete the performance

verification for the selected output.

10 Repeat step 1 through step 9 for the rest of the outputs.

Current tests

Source current mode programming and readback accuracy

This test verifies that the current programming and readback through the USB are
within published specifications.

Test settings

Tab le 2-3 Test settings for source current mode programming and readback accuracy

Keysight 3458A settings

Function Range

DC current 1 μA (for U2722A/U2723A drives ≤ 1 μA)

10 μA (for U2722A/U2723A drives ≤ 10 μA)

100 μA (for U2722A/U2723A drives ≤ 100 μA)

1 mA (for U2722A/U2723A drives ≤ 1 mA)

10 mA (for U2722A/U2723A drives ≤ 10 mA)

100 mA (for U2722A/U2723A drives ≤ 100 mA)

1 A (for U2722A/U2723A drives >100 mA)

[a] Use the highest resolution available on the DMM

[a]

Keysight U2722A/U2723A Service Guide 29

2 Performance Verification and Adjustment

SMU

+S

+

–

–S

DMM

+

–

Test setup

The test setup for no load condition is shown in the following figure.

Figure 2-2 Current test setup (no load condition)

Test procedure

1 Turn off the U2722A/U2723A. Connect the DMM to the output to be tested

(refer to Figure 2-2). Ensure that there is no load connected. Turn on the
U2722A/U2723A.

2 Configure the selected output as shown in the following.

a Configure the NPLC to 10.

b Configure the voltage range.

c Configure the current range.

d Program the clamp voltage, V

e Program the drive current, I

drive

clamp

.

.

3 Enable the output.

4 Wait for a few seconds for the output to settle.

5 Record the current reading on the DMM, I

meas

.

6 Read back the drive current over the USB.

7 Record the readback current reading over the USB, I

8 Compute (I

meas

– I

drive

) and (I

rdbk

– I

). Compare the values with the test

meas

rdbk

.

limit values.

30 Keysight U2722A/U2723A Service Guide

Performance Verification and Adjustment 2

9 Repeat step 2 through step 8 for each iteration to complete the performance

verification for the selected output.

10 Repeat step 1 through step 9 for the rest of the outputs.

Keysight U2722A/U2723A Service Guide 31

2 Performance Verification and Adjustment

Test Record Forms

Source voltage mode programming and readback accuracy

Table 2-4 Source voltage mode programming and readback accuracy

V

Iteration Test point Vol tage range Clamp current Current range

meas

– V

driveVrdbk

– V

meas

Limit

1

2 10 mA 10 mA

3 1 mA 1 mA

1 V 2 V

4100 μA 100 μA

510 μA 10 μA

61 μA1 μA

7

8 10 mA 10 mA

9 1 mA 1 mA

10 V 20 V

10 100 μA 100 μA

11 10 μA 10 μA

12 1 μA1 μA

120 mA 120 mA

120 mA 120 mA

±2.25 mV

±15 mV

32 Keysight U2722A/U2723A Service Guide

Performance Verification and Adjustment 2

Source current mode programming and readback accuracy

Tab le 2-5 Source current mode programming and readback accuracy

Iteration Test point Current range

1

Clamp

voltage

Voltage range

20 V 20 V ±1.275 nA

I

meas

– I

driveIrdbk

– I

meas

0.5 μA1 μA

22 V2 V±1.275 nA

3

20 V 20 V ±12.75 nA

5 μA 10 μA

42 V2 V±12.75 nA

5

20 V 20 V ±112.5 nA

50 μA 100 μA

62 V2 V±112.5 nA

7

20 V 20 V ±1.125 μA

0.5 mA 1 mA

82 V2 V±1.125 μA

9

20 V 20 V ±11.25 μA

5 mA 10 mA

10 2 V 2 V ±11.25 μA

11

20 V 20 V ±0.16 mA

60 mA 120 mA

12 2 V 2 V ±0.16 mA

Limit

Keysight U2722A/U2723A Service Guide 33

2 Performance Verification and Adjustment

Adjustment

The following information describes the procedure for voltage and current
adjustments for the U2722A/U2723A using Keysight Measurement Manager
revision 1.7 or above.

1 Establish the connection between the U2722A/U2723A and the PC. Launch

the Keysight Measurement Manager as shown below.

34 Keysight U2722A/U2723A Service Guide

Performance Verification and Adjustment 2

2 Select Tools > Source Measure > Ad justment to start the adjustment.

3 A message box will appear to inform that the adjustment operation will take

approximately two hours. During this period, you will not be able to operate
the U2722A/U2723A. Click Yes to continue with the adjustment operation.

Keysight U2722A/U2723A Service Guide 35

2 Performance Verification and Adjustment

4 Establish the connection between the 3458A and the PC to proceed with the

adjustment operation. Click OK to continue.

If the 3458A is not detected, an error message will appear as shown in the
following figure. Reconnect the 3458A to the PC and click Yes to proceed.
Select No to exit the adjustment operation.

5 The 3458A and U2722A/U2723A will be triggered to perform self-test and

self-calibration. During this process, make sure that there is no connection on
the instruments terminals. If self-test or self-calibration fails, cycle the
U2722A/U2723A power and repeat step 1 through step 5. In the unlikely event
that self-test or or self-calibration repeatedly fails, contact your nearest
Keysight Sales Office.

6 After the self-test and self-calibration have completed, a message box shown

in the following will appear to indicate you to connect the respective U2722A/
U2723A output to the voltage terminal of the 3458A. After the connection is
established, click OK to continue. The Keysight Measurement Manager will
now perform voltage adjustment on channel 1.

36 Keysight U2722A/U2723A Service Guide

Performance Verification and Adjustment 2

7 When the voltage adjustment has completed, connect the respective U2722A/

U2723A output to the current terminal of the 3458A. After the connection is
established, click OK to continue with current adjustment for channel 1.

8 After the voltage and current adjustments for channel 1 have completed, the

3458A will proceed with voltage and current adjustments for channel 2
followed by voltage and current adjustments for channel 3. Follow the
instructions on the message box to complete the adjustment operation.

9 When the adjustment operation has completed, a message box as shown in

the following will appear. Click OK to end the adjustment operation.

10 A message box will appear as shown below prompting you to power cycle the

U2722A/U2723A for the adjustment to take effect. To power cycle the
U2722A/U2723A, power off the U2722A/U2723A and restart it. Ensure that
the U2722A/U2723A is powered-off properly before restarting.

Keysight U2722A/U2723A Service Guide 37

2 Performance Verification and Adjustment

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38 Keysight U2722A/U2723A Service Guide

Keysight U2722A/U2723A USB Modular Source Measure Units
Service Guide

3 Characteristics and

Specifications

For the characteristics and specifications of the U2722A/U2723A USB Modular
Source Measure Units, refer to the datasheet at

http://literature.cdn.keysight.com/litweb/pdf/5990-7416EN.pdf.

39

3 Characteristics and Specifications

THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

40 Keysight U2722A/U2723A Service Guide

Index

A

accuracy

Source Current Mode

Programming and
Measurement

Source Voltage Mode

Programming and
Measurement

specifications

adjustment procedure

procedure

ambient

ideal temperature
relative humidity
temperature, 26
warm-up period

, 29, 33

, 27, 32

, 22

. See

, 26

, 26

, 26

C

Calibration

interval
performance. See performance
procedure
self. See Keysight

services. See Keysight
standards

channel
Characteristics, 39
cleaning, 24

compliance
connection cable
connector, output. See output
consideration, test. See test

, 22,

. See procedure

Measurement Manager

, 26

, 27, 28, 30

. See test

contact
contract, service, 22, 23

current

, 18, 22, 23

clamp, 28
DC, 29

, 30, 30

drive
programmable
programming, 29
read back

, 28, 30

range
source. See source

, 29, 30

test

, 26

, 29, 30

D

DC

current
voltage, 27

degree, pollution

Digital Multimeter

disassembly, 24
drive

current
voltage

. See current

. See pollution

degree

, 26, 27, 28,

29, 30, 30

. See current

. See voltage

E

ELV power source, isolated. See

power

equipment

, test. See test

H

humidity, relative

ambient. See ambient

I

ideal temperature. See ambient
interface, remote. See remote
interval, calibration. See

Calibration

isolated

iteration

, ELV power source. See

power

, 29, 31, 32, 32

K

Keysight

, 26, 26

3458A
calibration services
service

Keysight Measurement Manager

self-calibration, 20, 21
self-test

, 22, 23

, 18, 19

, 22

L

limit, test. See test
load, 18, 21, 28, 30

M

material, packaging, 24
MEAS:CURR?, 30

Keysight U2722A/U2723A Service Guide 41

measurement

accuracy
manager. See Keysight

Measurement Manager

source current mode, 29, 33
source voltage mode, 27, 32

message box
multimeter, digital. See Digital

Multimeter

. See accuracy

, 19, 21

N

no load condition, 28, 30

O

operating

environment

operating
OUTP ON
output

channel, 27
guard resistance. See guard
terminals

, 28, 29, 30

test

. See environment,

, 28, 28

, 18, 21

P

packaging materials. See material,

packaging

performance

calibration
characteristics

Characteristics

test

, 26

power
procedure

adjustment, 34
calibration
test

, current, 30
, voltage, 28

test

, 25, 26

. See

, 27, 28, 30

product

Keysight
characteristics. See

Characteristics

programming

source current mode
source voltage mode
voltage/current

voltage

, 22

, 29, 33

, 27, 32

. See current or

R

range, current/voltage. See

current or voltage

ratings
read back. See current or voltage
recommended, test equipment, 26
record form, test. See test
Regulatory markings, 8
relative humidity. See humidity,

remote

repackaging for shipment, 24
repair service
resolution, 26, 27, 29
result, test, 26

, output. See output

relative

interface
sense operating range. See

operating range
sense

, 18

, remote

, 22, 23

S

safety. See compliance
SCPI commands

self-test

Self-calibration

Measurement Manager

, 18

. See Keysight

Self-test

sense
service

settings, test. See test
setup, test. See test
shipment, 24

source

specifications

standard

storage
support, technical, 23
SYSTEM:ERROR?, 18

, 18

Keysight Measurement

Manager
Measurement Manager

. See Keysight

, remote. See remote

calibration, 22
contract, 22, 23

, 23

repair

, 22

types

current mode, 29, 33

, isolated ELV. See power

power
voltage mode

accuracy. See accuracy
performance
product. See product

calibration
commands, programming

language
commands

warranty, 22

, 27, 32

. See performance

, 26

. See SCPI

. See compliance

T

technical support. See support,

technical

temperature

ambient/ideal
operating

terminals

output

. See output

. See ambient

. See operating

42 Keysight U2722A/U2723A Service Guide

test

connection cable
consideration, 26
current
equipment
limit, 28, 30
procedure

procedure

procedure, voltage. See

record form
result
self
settings, current, 29
settings
setup
setup, voltage, 28
voltage

tools

self-calibration, 20
self-test

*TST?
types, service. See service

. See current

, calibration. See

procedure

, current. See

procedure

procedure

. See result, test

. See Self-test

, voltage, 27

, current, 30

. See voltage

, 18

, 18

, 26

, 26

, 27, 32, 33

voltage

clamp, 30
DC, 27

, 28, 28

drive

, overshoot. See output

output
programmable, 26
programming

, 28, 30

range
read back, 27, 28

. See source

source

, 27, 28, 28

test

W

warm-up, 26
warranty, 22

in, 23
post, 23

worldwide

, repair service, 23

, 27, 29

U

USB, 27, 28, 30

Hi-Speed 2.0. See Hi-Speed

USB 2

.0

V

vibration. See shock and vibration

Keysight U2722A/U2723A Service Guide 43

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44 Keysight U2722A/U2723A Service Guide

This information is subject to change
without notice. Always refer to the
English version at the Keysight
website for the latest revision.

© Keysight Technologies 2009-2017
Edition 8, December 1, 2017

Printed in Malaysia

*U2722-90021*

U2722-90021

www.keysight.com