Page 1
Keysight U1610/20A
Handheld Digital
Oscilloscope
Service Guide
Page 2
Notices
CAUTION
WARNING
Copyright Notice
© Keysight Technologies 2013 - 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.
Manual Part Number
U1610-90063
Edition
Edition 9, April 21, 2017
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hardware 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.
2 Keysight U1610/20A Service Guide
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Safety Symbols
CAT II
CAT III
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 (DC)
Alternating current (AC) Earth (ground) terminal
Both direct and alternating current Category II overvoltage protection
Caution, risk of danger (refer to this
manual for specific Warning or Caution
information)
Caution, risk of electric shock
Equipment protected throughout by
double insulation or reinforced
insulation
Category III overvoltage protection
Keysight U1610/20A Service Guide 3
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General Safety Information
WARNING
WARNING
WARNING
The following general safety precautions must be observed during all phases of
operation 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.
– Remove all unused scope (oscilloscope) probes, DMM (digital
multimeter) test leads, or USB cable.
– Do not connect the DMM test leads and scope probes at the same time.
– Disconnect the scope probe from the instrument before using the DMM
functions.
– Disconnect the DMM test leads from the instrument before using the
scope functions.
To avoid electrical shock or fire during battery replacement:
– Disconnect test leads, probes, power supply, and USB cable before
opening the case or battery cover.
– Do not operate the instrument with the battery cover open.
– Use only specified insulated probes and test leads.
– Use only the 10.8 V Li-Ion battery pack supplied with the instrument.
To prevent fire or injury:
– Use only the designated AC/DC adapter and test leads supplied with the
instrument.
– Observe all ratings and markings on the instrument before connecting to
the instrument.
– When performing measurements, ensure that the right safety and
performance ratings of instrument and accessories are used.
4 Keysight U1610/20A Service Guide
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WARNING
– Plug the probe or test leads to the instrument before connecting to any
active circuit for testing. Before disconnecting from the instrument,
remove the probe or test leads from the active circuit.
– Do not connect the USB cable when not in use. Keep the USB cable away
from any probe, test lead, or exposed circuitry.
– Do not expose the circuit or operate the instrument without its cover or
while power is being supplied.
– Do not use exposed metal BNC or banana plug connectors. Use only the
insulated voltage probes, test leads, and adapters supplied with the
instrument.
– Do not supply any voltage when measuring resistance or capacitance in
multimeter mode.
– Do not operate the instrument if it does not operate properly. Have the
instrument inspected by qualified service personnel.
– Do not operate the instrument in wet or damp environments.
– Do not operate the instrument in any environment at risk of explosion. Do
not operate the instrument in the presence of flammable gases or flames.
– Keep the instrument surface clean and dry. Keep the BNC connectors dry
especially during high-voltage testing.
Keysight U1610/20A Service Guide 5
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WARNING
Maximum Input Voltages
CAUTION
– Input CH1 and CH2 direct (1:1 probe) — CAT III 300 V
– Input CH1 and CH2 via 10:1 probe — CAT III 600 V
– Input CH1 and CH2 via 100:1 probe — CAT III 600 V
CAT I 3540 V
[1]
– Meter input — CAT III 600 V, CAT II 1000 V
– Scope input — CAT III 300 V
– Voltage ratings are Vrms (50 – 60 Hz) for AC sine wave and VDC for
DC applications.
Maximum Floating Voltage
– From any terminal to earth ground — CAT III 600 Vrms
[1] Refer to the respective probe’s manual for more information on the specification.
– If the instrument is used in a manner not specified by the manufacturer,
the instrument protection may be impaired.
– Always use dry cloth to clean the instrument. Do not use ethyl alcohol or
any other volatile liquid.
[1]
, CAT II 1000 V
[1]
, CAT II 1000 V
[1]
[1]
,
– It is recommended to use the instrument under ventilated conditions and
in the upright position to ensure adequate airflow at the rear.
– Always cover the DC power inlet and the USB port by closing the lid when
not in use.
6 Keysight U1610/20A Service Guide
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CAUTION
To prevent electrostatic discharge (ESD):
Electrostatic discharge (ESD) can result in damage to the components in the
instrument and accessories.
– Select a static-free work location when installing and removing sensitive
equipment.
– Handle sensitive components to the minimum extent possible. Do not
allow contacts between components and exposed connector pins.
– Transport and store in ESD preventive bags or containers that protect
sensitive components from static electricity.
– The battery (optional) must be properly recycled or disposed.
Keysight U1610/20A Service Guide 7
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Measurement Category
The U1610/20A has a safety rating of CAT II and CAT III.
Measurement CAT I Measurements performed on circuits not directly
connected to the AC mains. Examples are measurements on circuits not derived
from the AC mains and specially protected (internal) mains-derived circuits.
Measurement CAT II Measurements performed on circuits directly connected
to a low-voltage installation. Examples are measurements on household
appliances, portable tools, and similar equipment.
Measurement CAT III Measurements performed in the building installation.
Examples are measurements on distribution boards, circuit- breakers, wiring,
including cables, bus-bars, junction boxes, switches, socket outlets in the fixed
installation, and equipment for industrial use, and some other equipment
including stationary motors with permanent connection to the fixed installation.
Measurement CAT IV Measurements performed at the source of the
low-voltage installation. Examples are electricity meters and measurements on
primary overcurrent protection devices and ripple control units.
8 Keysight U1610/20A Service Guide
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Environmental Conditions
NOTE
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 condition Requirement
Temperature
Humidity
The U1610/20A Handheld Digital Oscilloscope complies with the following
safety and EMC requirements:
Operating:
– 0 °C to 50 °C (with battery only)
– 0 °C to 40 °C (with AC/DC adapter)
Storage: –20 °C to 70 °C
Operating:
– Maximum: 80% RH at 40 °C (non-condensing)
– Minimum: 50% RH at 40 °C (non-condensing)
Storage: Up to 95% RH at 40 °C (non-condensing)
– IEC 61010-1:2001/EN 61010-1:2001
– Canada: CAN/CSA-C22.2 No. 61010-1-04
– USA: ANSI/UL 61010-1:2004
– IEC 61326-1:2005/EN 61326-1:2006
– Australia/New Zealand: AS/NZS CISPR 11:2004
– Canada: ICES/NMB-001: ISSUE 4, June 2006
Keysight U1610/20A Service Guide 9
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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 the Canadian
ICES-001.
Cet appareil ISM est conforme a la
norme NMB-001 du Canada.
ISM GRP.1 Class A indicates that this
is an Industrial Scientific and Medical
Group 1 Class A product.
The CSA mark is a registered
trademark of the Canadian
Standards Association.
The RCM mark is a registered
trademark of the Australian
Communications and Media Authority.
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.
This symbol indicates the time period
during which no hazardous or toxic
substance elements are expected to
leak or deteriorate during normal use.
Forty years is the expected useful life
of the product.
10 Keysight U1610/20A Service Guide
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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/handheldscope
(product-specific information and support, software and
documentation updates)
– www.keysight.com/find/assist
(worldwide contact information for repair and service)
Keysight U1610/20A Service Guide 11
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12 Keysight U1610/20A Service Guide
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Table of Contents
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Measurement Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/
EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
1 Performance Verification Tests
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Test interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Test record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Test consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Oscilloscope Performance Verification Tests . . . . . . . . . . . . . . . . . . . . .20
Voltage measurement accuracy verification test . . . . . . . . . . . . . . .20
Bandwidth verification test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Multimeter Performance Verification Tests . . . . . . . . . . . . . . . . . . . . . .26
DC voltage verification test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
AC voltage verification test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Resistance verification test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Capacitance verification test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Keysight U1610/20A Handheld Digital Oscilloscope Test Record . . . .32
Oscilloscope performance verification tests . . . . . . . . . . . . . . . . . . .32
Multimeter performance verification tests . . . . . . . . . . . . . . . . . . . .33
Keysight U1610/20A Service Guide 13
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2Service and Maintenance
Warranty Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Standard warranty (worldwide) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Accessories warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Standard calibration service (optional) . . . . . . . . . . . . . . . . . . . . . . . 38
Returning the U1610/20A to Keysight for Service . . . . . . . . . . . . . . . . 39
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
To order replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Basic Troubleshooting Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
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List of Tables
Table 1-1 Recommended test equipment for oscilloscope perfor-
mance verification tests . . . . . . . . . . . . . . . . . . . . .19
Table 1-2 Recommended test equipment for multimeter perfor-
mance verification tests . . . . . . . . . . . . . . . . . . . . .19
Table 1-3 Settings for the voltage measurement accuracy verification
test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Table 1-4 Settings for the DC voltage verification test . . . . . . . .27
Table 1-5 Settings for the AC voltage verification test . . . . . . . .28
Table 1-6 Settings for the resistance verification test . . . . . . . . .30
Table 1-7 Settings for the capacitance verification test . . . . . . .31
Table 2-1 Replaceable parts list . . . . . . . . . . . . . . . . . . . . . . . . . .40
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Keysight U1610/20A Handheld Digital Oscilloscope
Service Guide
1 Performance Verification
Tests
Introduction 18
Recommended Test Equipment 19
Oscilloscope Performance Verification Tests 20
Multimeter Performance Verification Tests 26
Keysight U1610/20A Handheld Digital Oscilloscope Test Record 32
This chapter helps you to verify the performance of the U1610/20A.
17
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1 Performance Verification Tests
NOTE
Introduction
The performance verification tests described in this section are used to verify the
measurement performance of the U1610/20A. These tests should be performed
periodically to verify that the U1610/20A is operating within specifications (as
listed in the U1610/20A User’s Guide).
If the U1610/20A fails the performance verification tests, adjustment or repair is
required.
Test interval
The recommended interval of the performance verification tests is once per year.
Performance should also be tested after repairs or major upgrades.
Test record
You can use the test record form provided in “Keysight U1610/20A Handheld
Digital Oscilloscope Test Record” on page 32 to record your performance test
results.
Test consideration
For accurate test results, let the U1610/20A and test equipment warm up for
30 minutes and perform self-calibration before testing. For more information on
performing self-calibration, refer to the U1610/20A User’s Guide.
If performance tests fail after self-calibration, send the U1610/20A to your
nearest Keysight Service Center for servicing.
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Performance Verification Tests 1
Recommended Test Equipment
The test equipment recommended for performance verification are listed below. If
the exact equipment is not available, substitute with another calibration standard
of equivalent accuracy.
Table 1-1 Recommended test equipment for oscilloscope performance verification tests
Application Equipment Critical specification Recommended equipment
Voltage measurement
accuracy
Bandwidth Calibrator Leveled sine wave of up to 250 MHz Fluke 5820A
Calibrator/Power supply 5 mV to 350 VDC, 0.1 mV resolution,
≥350 V
Cable BNC (f) to BNC (f) Keysight 10503A
Adapter BNC (f) to dual banana (m) Keysight 1251-2277
Feedthrough termination 50 Ω, BNC (m) and BNC (f) Keysight 0960-0301
Coaxial cable assembly Type N (m) to BNC (m), 1 meter Fluke 688960
Fluke 5520A
Table 1-2 Recommended test equipment for multimeter performance verification tests
Application Recommended equipment
DC voltage Fluke 5520A
AC voltage Fluke 5520A
Resistance Fluke 5520A
Capacitance Fluke 5520A
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1 Performance Verification Tests
NOTE
Oscilloscope Performance Verification Tests
The performance verification tests described in this section verify the channel
measurement accuracy and acquisition system to provide confidence in
functionality and accuracy of the U1610/20A. These performance verification
tests are based on the U1610/20A specifications, as listed in the U1610/20A
User’s Guide.
Voltage measurement accuracy verification test
This test verifies the accuracy of the analog channel voltage measurement for
each channel (DC vertical gain accuracy and dual cursor accuracy specifications).
In this test, you will measure the DC voltage output of an oscilloscope calibrator
using dual cursors on the U1610/20A.
Test limit:
±{4% of full scale* + 0.4% of full scale* (~1 LSB)}
*Full scale on all ranges is defined as 8 divisions multiplied by the V/div setting.
Refer to Table 1-1 for the equipment required for this voltage measurement
accuracy verification test. Perform the following procedure for channel 1, and
then repeat the same procedure for channel 2.
1 On the U1610/20A:
a Press > > (F1) to turn on channel 1.
b Press (F2) and use the or key, or press to set the
offset to 0.5 major divisions from the bottom of display.
Offset adjustment is not applicable for the 50 V/div vertical sensitivity.
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Performance Verification Tests 1
Fluke 5520A calibrator
U1610/20A
c Press to set the vertical sensitivity to 20 V/div.
d Press > (F4) and use the or key to set the
average number to 64.
e Press > (F1) to select the channel 1 source. Toggle
(F1) to select the Y cursor. Press (F3) and use the
or key to place the Y1 cursor on the offset line.
2 Connect the calibrator to the U1610/20A channel 1 as shown below.
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1 Performance Verification Tests
3 Set the calibrator output to 140 V. Wait a few seconds for the measurement to
settle.
4 On the U1610/20A:
a Press (F4) and use the or key to place the Y2 cursor at
the center of the voltage trace.
b The Y1Y2 value on the display should be within the test limits of Table 1-3
below.
5 Continue to verify the voltage measurement accuracy with the remaining V/div
settings in Table 1-3.
6 Once completed, disconnect the calibrator from the U1610/20A.
7 Repeat steps 1 to 6 for the U1610/20A channel 2.
Table 1-3 Settings for the voltage measurement accuracy verification test
U1610/20A setting Calibrator setting Minimum test limit Maximum test limit
50 V/div 175 V 157.40 V 192.60 V
50 V/div –175 V –192.60 V –157.40 V
20 V/div 140 V 132.96 V 147.04 V
10 V/div 70 V 66.48 V 73.52 V
5 V/div 35 V 33.24 V 36.76 V
2 V/div 14 V 13.30 V 14.70 V
1 V/div 7 V 6.65 V 7.35 V
500 mV/div 3.5 V 3.32 V 3.68 V
200 mV/div 1.4 V 1.33 V 1.47 V
100 mV/div 700 mV 664.80 mV 735.20 mV
50 mV/div 350 mV 332.40 mV 367.60 mV
20 mV/div 140 mV 132.96 mV 147.04 mV
10 mV/div 70 mV 66.48 mV 73.52 mV
5 mV/div 35 mV 33.24 mV 36.76 mV
2 mV/div 14 mV 13.30 mV 14.70 mV
22 Keysight U1610/20A Service Guide
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Bandwidth verification test
U1610/20A
50 Ω feedthrough termination
Fluke 5820A calibrator
This test verifies the bandwidth response of the U1610/20A. In this test, you will
use an oscilloscope calibrator to output a leveled sine wave.
You will use the RMS voltage at 1 MHz and at bandwidth frequency to verify the
bandwidth response of the U1610/20A.
From specifications:
U1610A: Bandwidth (±3 dB) = 100 MHz
U1620A: Bandwidth (±3 dB) = 200 MHz
Refer to Table 1-1 for the equipment required for this bandwidth verification test.
Perform the following procedure for channel 1, and then repeat the same
procedure for channel 2.
1 On the U1610/20A, press > > (F1) to turn on
channel 1.
Performance Verification Tests 1
2 Connect the calibrator output through a 50 Ω feedthrough termination to the
U1610/20A channel 1 input as shown below.
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1 Performance Verification Tests
3 On the U1610/20A:
a Press to set the horizontal scale factor to 200 ns/div.
b Press to set the vertical sensitivity for channel 1 to 500 mV/div.
c Press > (F1) to set the acquisition mode to Normal.
d Press > > (F2) to select the channel 1
trigger source.
4 On the calibrator, perform the following configuration:
– Output: Level sine
–OPR/STBY: OPR
– Frequency: 1 MHz
– Amplitude: 1.2 V
5 On the U1610/20A:
a Press > (F1) to select the channel 1 source.
b Press (F2) and use the keys to select the RMS (AC)
measurement, and then press (F3).
c Wait a few seconds for the measurement to settle. View the RMS reading at
the bottom of the display.
Record the reading: VRMS = _______ V
6 On the calibrator, change the frequency to 100 MHz (for U1610A) or 200 MHz
(for U1620A).
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Performance Verification Tests 1
20
Reading
of step 7
Reading
of step 5
-----------------------------
log
Bandwidth response =
7 On the U1610/20A:
a Press to set the horizontal scale factor to 10 ns/div.
b Wait a few seconds for the measurement to settle.
c View the RMS reading at the bottom of the display.
Record the reading: VRMS = _______ mV
8 Calculate the bandwidth response of the U1610/20A:
9 Repeat steps 1 to 8 for channel 2.
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1 Performance Verification Tests
WARNING
Fluke 5520A calibrator
U1610/20A
Multimeter Performance Verification Tests
Use the performance verification tests described in this section to verify the
multimeter measurement performance of the U1610/20A. These tests are based
on the U1610/20A specifications as listed in the U1610/20A User’s Guide.
Refer to Table 1-2 for the equipment required for the performance verification
tests.
Some of the verification tests involve high voltages; hence, only qualified
personnel is recommended to perform the tests.
To avoid electrical shock or personal injury, always place the calibrator in
Standby (STBY) mode before starting the verification test.
DC voltage verification test
1 Put the calibrator in Standby (STBY) mode.
2 On the U1610/20A, press > (F1) and use the keys
to select the V DC measurement function.
3 Connect the calibrator to the U1610/20A meter terminals using a banana plug
as shown below. Ensure the polarity of the banana plug connection is correct.
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Performance Verification Tests 1
Fluke 5520A calibrator
U1610/20A
4 On both the calibrator and the U1610/20A, set each voltage range in the order
shown in Table 1-4 below.
5 Compare the measurement results to the corresponding test limits of
Table 1-4.
Table 1-4 Settings for the DC voltage verification test
Calibrator setting Function U1610/20A setting Minimum limit Maximum limit
100 mV
1 V 1 V 0.9986 V 1.0014 V
10 V 10 V 9.989 V 10.011 V
100 V 100 V 99.89 V 100.11 V
1000 V 1000 V 998 V 1002 V
V DC
100 mV 99.85 mV 100.15 mV
AC voltage verification test
1 Put the calibrator in Standby (STBY) mode.
2 On the U1610/20A, press > (F1) and use the keys
to select the V AC measurement function.
3 Connect the calibrator to the U1610/20A meter terminals using a banana plug
as shown below. Ensure the polarity of the banana plug connection is correct.
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1 Performance Verification Tests
4 On both the calibrator and the U1610/20A, configure each setting in the order
shown in Table 1-5 below.
5 Compare the measurement results to the corresponding test limits of
Table 1-5.
Table 1-5 Settings for the AC voltage verification test
Calibrator voltage
setting
100 mV 45 Hz 100 mV 98.95 mV 101.05 mV
100 mV 500 Hz 100 mV 98.95 mV 101.05 mV
100 mV 1 kHz 100 mV 98.95 mV 101.05 mV
100 mV 2 kHz 100 mV 98.95 mV 101.05 mV
1 V 45 Hz 1 V 0.9895 V 1.0105 V
1 V 500 Hz 1 V 0.9795 V 1.0205 V
1 V 1 kHz 1 V 0.9795 V 1.0205 V
10 V 45 Hz 10 V 9.895 V 10.105 V
10 V 500 Hz 10 V 9.895 V 10.105 V
10 V 1 kHz 10 V 9.795 V 10.205 V
10 V 2 kHz 10 V 9.795 V 10.205 V
100 V 45 Hz 100 V 98.95 V 101.05 V
100 V 500 Hz 100 V 98.95 V 101.05 V
100 V 1 kHz 100 V 97.95 V 102.05 V
Calibrator frequency
setting
U1610/20A range
setting
Minimum limit Maximum limit
100 V 2 kHz 100 V 97.95 V 102.05 V
1000 V 45 Hz 1000 V 989.5 V 1010.5 V
1000 V 500 Hz 1000 V 989.5 V 1010.5 V
1000 V 1 kHz 1000 V 989.5 V 1010.5 V
28 Keysight U1610/20A Service Guide
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Resistance verification test
Fluke 5520A calibrator
U1610/20A
1 Put the calibrator in Standby (STBY) mode.
2 On the U1610/20A, press > (F1) and use the keys
to select the resistance measurement function.
3 Connect the calibrator to the U1610/20A meter terminals using a 2-wire
compensation mode as shown below. Ensure the polarity of the banana plug
connection is correct.
Performance Verification Tests 1
4 On both the calibrator and the U1610/20A, set each resistance range in the
order shown in Tab le 1-6.
5 Compare the measurement results to the corresponding test limits of
Table 1-6.
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1 Performance Verification Tests
Fluke 5520A calibrator
U1610/20A
Table 1-6 Settings for the resistance verification test
Calibrator setting Function U1610/20A setting Minimum limit Maximum limit
1000 Ω
10 kΩ 10 kΩ 9.967 kΩ 10.033 kΩ
100 kΩ 100 kΩ 99.67 kΩ 100.33 kΩ
Resistance
1 MΩ 1 MΩ 0.994 MΩ 1.006 MΩ
10 MΩ 10 MΩ 9.917 MΩ 10.083 MΩ
100 MΩ 100 MΩ 98.47 MΩ 101.53 MΩ
1000 Ω 996.7 Ω 1003.3 Ω
Capacitance verification test
1 Put the calibrator in Standby (STBY) mode.
2 On the U1610/20A, press > (F1) and use the keys
to select the capacitance measurement function.
3 Connect the calibrator to the U1610/20A meter terminals using a banana plug
as shown below. Ensure the polarity of the banana plug connection is correct.
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Performance Verification Tests 1
4 On both the calibrator and the U1610/20A, set each capacitance range in the
order shown in Tab le 1-7.
5 Compare the measurement results to the corresponding test limits of
Table 1-7.
Table 1-7 Settings for the capacitance verification test
Calibrator setting Function U1610/20A setting Minimum limit Maximum limit
1000 nF
10 μF 10 μF 9.876 μF 10.124 μF
100 μF 100 μF 98.76 μF 101.24 μF
1000 μF 1000 μF979.6 μF 1020.4 μF
10 mF 10 mF 9.796 mF 10.204 mF
Capacitance
1000 nF 987.6 nF 1012.4 nF
Keysight U1610/20A Service Guide 31
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1 Performance Verification Tests
Keysight U1610/20A Handheld Digital Oscilloscope Test Record
Serial No.: Test By:
Test Interval: Work Order No.:
Recommended Next Testing: Temperature:
Oscilloscope performance verification tests
Voltage measurement accuracy verification test
U1610/20A setting Calibrator setting Minimum test limit Maximum test limit Channel 1 Channel 2
50 V/div 175 V 157.40 V 192.60 V
50 V/div –175 V –192.60 V –157.40 V
20 V/div 140 V 132.96 V 147.04 V
10 V/div 70 V 66.48 V 73.52 V
5 V/div 35 V 33.24 V 36.76 V
2 V/div 14 V 13.30 V 14.70 V
1 V/div 7 V 6.65 V 7.35 V
500 mV/div 3.5 V 3.32 V 3.68 V
200 mV/div 1.4 V 1.33 V 1.47 V
100 mV/div 700 mV 664.80 mV 735.20 mV
50 mV/div 350 mV 332.40 mV 367.60 mV
20 mV/div 140 mV 132.96 mV 147.04 mV
10 mV/div 70 mV 66.48 mV 73.52 mV
5 mV/div 35 mV 33.24 mV 36.76 mV
2 mV/div 14 mV 13.30 mV 14.70 mV
32 Keysight U1610/20A Service Guide
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Performance Verification Tests 1
Bandwid th verification test
Model Test limit Channel 1 Channel 2
U1610A
U1620A
±3 dB at 100 MHz
±3 dB at 200 MHz
Multimeter performance verification tests
DC voltage verification test
Calibrator setting U1610/20A setting Minimum l imit Maximum limit Resul t
100 mV 100 mV 99.85 mV 100.15 mV
1 V 1 V 0.9986 V 1.0014 V
10 V 10 V 9.989 V 10.011 V
100 V 100 V 99.89 V 100.11 V
1000 V 1000 V 998 V 1002 V
Keysight U1610/20A Service Guide 33
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1 Performance Verification Tests
AC voltage verification test
Calibrator voltage
setting
100 mV 45 Hz 100 mV 98.95 mV 101.05 mV
100 mV 500 Hz 100 mV 98.95 mV 101.05 mV
100 mV 1 kHz 100 mV 98.95 mV 101.05 mV
100 mV 2 kHz 100 mV 98.95 mV 101.05 mV
1 V 45 Hz 1 V 0.9895 V 1.0105 V
1 V 500 Hz 1 V 0.9795 V 1.0205 V
1 V 1 kHz 1 V 0.9795 V 1.0205 V
10 V 45 Hz 10 V 9.895 V 10.105 V
10 V 500 Hz 10 V 9.895 V 10.105 V
10 V 1 kHz 10 V 9.975 V 10.205 V
10 V 2 kHz 10 V 9.975 V 10.205 V
100 V 45 Hz 100 V 98.95 V 101.05 V
100 V 500 Hz 100 V 98.95 V 101.05 V
100 V 1 kHz 100 V 97.95 V 102.05 V
Calibrator frequency
setting
U1610/20A range
setting
Minimum limit Maximum limit Result
100 V 2 kHz 100 V 97.95 V 102.05 V
1000 V 45 Hz 1000 V 989.5 V 1010.5 V
1000 V 500 Hz 1000 V 989.5 V 1010.5 V
1000 V 1 kHz 1000 V 989.5 V 1010.5 V
34 Keysight U1610/20A Service Guide
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Performance Verification Tests 1
Resistance verification test
Calibrator setting U1610/20A setting Minimum limit Maximum limit Result
1000 Ω 1000 Ω 996.7 Ω 1003.3 Ω
10 kΩ 10 kΩ 9.967 kΩ 10.033 kΩ
100 kΩ 100 kΩ 99.67 kΩ 100.33 kΩ
1 MΩ 1 MΩ 0.994 MΩ 1.006 MΩ
10 MΩ 10 MΩ 9.917 MΩ 10.083 MΩ
100 MΩ 100 MΩ 98.47 MΩ 101.53 MΩ
Capacitance verification test
Calibrator setting U1610/20A setting Minimum limit Maximum limit Result
1000 nF 1000 nF 987.6 nF 1012.4 nF
10 μF 10 μF 9.876 μF 10.124 μF
100 μF 100 μF 98.76 μF 101.24 μF
1000 μF 1000 μF 979.6 μF 1020.4 μF
10 mF 10 mF 9.796 mF 10.204 mF
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1 Performance Verification Tests
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
36 Keysight U1610/20A Service Guide
Page 37
Keysight U1610/20A Handheld Digital Oscilloscope
Service Guide
2 Service and Maintenance
Warranty Services 38
Returning the U1610/20A to Keysight for Service 39
Replaceable Parts 40
Cleaning 41
Battery Replacement 42
Basic Troubleshooting Hints 43
This chapter explains the warranty services offered and the appropriate actions to
take if you have a problem with your U1610/20A.
37
Page 38
2 Service and Maintenance
Warranty Services
Standard warranty (worldwide)
If your U1610/20A fails during the three years warranty period, Keysight will repair
or replace the unit under the terms of your warranty. After the expiration of the
warranty, Keysight will offer repair services at a very competitive price.
This warranty does not cover defects resulting from improper or inadequate
maintenance by the Buyer, Buyer-supplied products or interfacing, unauthorized
modification or misuse, operation outside of the environmental specifications for
the product, or improper site preparation or maintenance.
If your U1610/20A is defective, contact the nearest Keysight Service Center to
obtain service for your unit. They will arrange to have your unit repaired or
replaced.
To obtain warranty, service, or technical support assistance, you can contact
Keysight (refer to “Sales and Technical Support” on page 11).
Accessories warranty
Keysight offers warranty for product accessories for up to 3 months from the
end-user acceptance date.
Standard calibration service (optional)
Keysight offers an optional calibration service contract for a period of 3 years from
the end-user acceptance date.
38 Keysight U1610/20A Service Guide
Page 39
Service and Maintenance 2
NOTE
Returning the U1610/20A to Keysight for Service
Before shipping your U1610/20A for repair or replacement, Keysight recommends
that you acquire the shipping instructions from the Keysight Service Center.
A clear understanding of the shipping instructions is necessary to secure your
product for shipment.
1 Attach a tag to the U1610/20A with the following information:
– Name and address of owner
– Instrument model number
– Instrument serial number
– Description of the service required or failure indications
2 Remove all accessories from the U1610/20A. Do not include accessories
unless they are associated with the failure symptoms.
3 Protect the U1610/20A by wrapping it in plastic or heavy paper.
4 Pack the U1610/20A in foam or other shock-absorbing material and place it in
a strong shipping container.
You are recommended to use the original shipping material or order materials
from the Keysight Sales Office. If both options are not available, place 8 to
10 cm (3 to 4 inches) of shock-absorbing and static-free packaging material
around the U1610/20A to avoid movement during shipping.
5 Seal the shipping container securely.
6 Mark the shipping container as FRAGILE. In the ensuing correspondence, refer
to the instrument by its model number and full serial number.
Keysight suggests that you always insure your shipments.
Keysight U1610/20A Service Guide 39
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2 Service and Maintenance
NOTE
NOTE
Replaceable Parts
This section contains information for ordering replaceable parts for your U1610/
20A. Table 2-1 includes a brief description of each replaceable part with its
corresponding part number.
You can find the latest U1610/20A support parts list at Keysight Test &
Measurement Parts Catalog: http://www.keysight.com/find/parts.
To order replaceable parts
You can order replaceable parts from Keysight using the part numbers as listed in
Table 2-1.
Not all parts listed are available as field-replaceable parts.
To order replaceable parts from Keysight:
1 Contact your nearest Keysight Sales Office or Service Center.
2 Identify the parts by their corresponding Keysight part numbers shown in the
replaceable parts list.
3 Provide the instrument model number and serial number.
Table 2-1 Replaceable parts list
Part number Description
U1610-60205 Battery cover
U1610-60206 Stand
U1610-65001 Hand strap
U1610-65002 Neck strap
40 Keysight U1610/20A Service Guide
Page 41
Cleaning
Service and Maintenance 2
If the U1610/20A requires cleaning, follow these instructions:
– Disconnect the power source from the U1610/20A.
– Clean the external surfaces of the U1610/20A with a soft, lint-free, and slightly
dampened cloth.
– Make sure the U1610/20A is completely dry before reconnecting it to a power
source. Disassembly is not required or recommended for cleaning.
Keysight U1610/20A Service Guide 41
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2 Service and Maintenance
NOTE
WARNING
WARNING
Battery Replacement
No recalibration is required after replacing the battery.
To avoid electric shock, disconnect all input and power cord from the
U1610/20A. Do not operate the U1610/20A until the battery access cover is
closed securely.
1 Loosen the screw of the battery access cover
as indicated.
2 Open the battery access cover.
3 Pull out the battery from the battery
compartment as shown.
4 Install a new battery pack and re-assemble the battery access cover.
Do not use non-rechargeable batteries (e.g., alkaline, carbon-zinc) with the
AC/DC adapter connected.
42 Keysight U1610/20A Service Guide
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Basic Troubleshooting Hints
This section provides hints and suggestions for solving general problems that you
may encounter with the U1610/20A.
Problem Hint/Suggestion
Service and Maintenance 2
No display
No trace display
Trace display is
unusual or
unexpected
– Check that at the front panel is turned on.
– Check the battery condition. Charge the battery if the battery is exhausted.
– Reset to factory default settings ( > ).
– Check that the scope probe lead wires are securely inserted into the connector assembly and that the
probe clips are making good contact with the probe lead wires.
– Check that the circuit-under-test is powered on, the probe clips are securely connected to test points
on the circuit-under-test, and ground is connected.
– Press to automatically trigger the signal to the best display.
– Check that the horizontal time/division is correctly set for the expected frequency range of the input
signals.
– Check that all scope probes are connected to the correct signals on the circuit-under-test, and the
ground lead is securely connected to ground of the circuit-under-test.
– The trigger setup is the most important factor in capturing the signal you desire. Check that the
trigger setup is correct.
– Check that > (F3) is turned off. Press to clear the display.
– Press to automatically trigger the signal to the best display.
No channel display
– Reset to factory default settings ( > ).
– Check that the scope probe cable is securely connected to the input connector.
– Check that the scope probe lead wires are securely inserted into the connector assembly and that the
probe clips are making good contact with the probe lead wires.
– Check that the circuit-under-test is powered on, the probe clips are securely connected to test points
on the circuit-under-test, and ground is connected.
– Check that the corresponding scope channel is being turned on.
– Press to automatically trigger the signal to the best display.
Keysight U1610/20A Service Guide 43
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2 Service and Maintenance
NOTE
Problem Hint/Suggestion
Unable to charge the
U1610/20A with the
AC/DC adapter after
the battery is flat or
when the battery
voltage level is too
low to power on the
U1610/20A
Unable to power on
after turning off the
U1610/20A, with the
AC/DC adapter still
connected
Perform the following steps to reset the battery charging:
– Pull out the battery from the battery compartment. Refer to “Battery Replacement” on page 42 for
more information.
– Plug in the AC/DC adapter.
– Power on the U1610/20A.
– Install the battery back.
– The U1610/20A will start the charging process. The battery will take approximately 6 to 8 hours to be
fully charged with the U1610/20A powered on.
– Remove and plug back in the AC/DC adapter to the U1610/20A. Press to power on the
U1610/20A.
If you cannot get any response from the U1610/20A, contact the nearest
Keysight Service Center to obtain further assistance.
44 Keysight U1610/20A Service Guide
Page 45
This information is subject to change
without notice. Always refer to the
Keysight website for the latest
revision.
© Keysight Technologies 2013 - 2017
Edition 9, April 21, 2017
Printed in Malaysia
*U1610-90063*
U1610-90063
www.keysight.com
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