Agilent Technologies U1253A Manual

Agilent Technologies
Agilent U1253A True
RMS OLED Multimeter
User’s and Service Guide

II U1253A User’s and Service Guide
Notices
® Agilent Technologies, Inc. , 2008-2010
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
U1253-90001
Edition
Sixth Edition, November 8, 2010
Agilent Technologies, Inc.
3501 Stevens Creek Blvd.
Santa Clara, CA 95052 USA
Trademark Acknowledgements
Pentium is a U.S. registered trademark of
Intel Corporation.
Microsoft, Visual Studio, Windows, and MS
Windows are trademarks of Microsoft Cor-
poration in the United States and/or other
countries.
Accessories Warranty
Agilent offers warranty for product’s acces-
sories for up to 3 months from the end-user
acceptance date.
Standard Calibration Service
(optional)
Agilent offers an optional calibration service
contract for a period of 3 years from
end-user acceptance date.
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
this document are furnished under a license
and may be used or copied only in accor-
dance with the terms of such license.
Restricted Rights Legend
U.S. Government Restricted Rights. Soft-
ware and technical data rights granted to
the federal government include only those
rights customarily provided to end user cus-
tomers. Agilent provides this customary
commercial license in Software and techni-
cal data pursuant to FAR 12.211 (Technical
Data) and 12.212 (Computer Software) and,
for the Department of Defense, DFARS
252.227-7015 (Technical Data - Commercial
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.

U1253A 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 (DC) Off (supply)
Alternating current (AC) On (supply)
Both direct and alternating current Caution, risk of electric shock
Three-phase alternating current Caution, risk of danger (refer to this manual
for specific Warning or Caution information)
Earth (ground) terminal Caution, hot surface
Protective conductor terminal Out position of a bi-stable push control
Frame or chassis terminal In position of a bi-stable push control
Equipotentiality Category III 1000 V overvoltage protection
Equipment protected throughout by
double insulation or reinforced
insulation
Category IV 600 V overvoltage protection
CAT III
1000 V
CAT IV
600 V

IV U1253A 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 with specific warnings elsewhere in this
manual violates safety standards of design, manufacture, and intended
use of the instrument. Agilent Technologies assumes no liability for the
customer’s failure to comply with these requirements.

U1253A User’s and Service Guide V
WARNING
• When working above 60 V DC, 30 V AC rms, or 42.4 V AC peak, exercise caution – such
range poses a shock hazard.
• Do not measure more than the rated voltage (as marked on the multimeter) between
terminals, or between terminal and earth ground.
• Double-check the meters operation by measuring a known voltage.
•Forcurrentmeasurement, turn off circuit power before connecting the multimeter to
the circuit. Always place the multimeter in series with the circuit.
• When connecting probes, always connect the common test probe first. When
disconnecting probes, always disconnect the live test probe first.
• Detach test probes from the multimeter before you open the battery cover.
• Do not use the multimeter with the battery cover or part of the cover removed or loose.
• Replace the battery as soon as the low battery indicator flashes on screen. This is to
avoid false readings, which may lead to possible electric shock or personal injury.
• Do not operate the product in an explosive atmosphere or in the presence of
flammable gases or fumes.
• Inspect the case for cracks or missing plastic. Pay extra attention to the insulation
surrounding the connectors. Do not use the multimeter if it is damaged.
• Inspect the test probes for damaged insulation or exposed metal, and check for
continuity. Do not use the test probe if it is damaged.
• Do not use any other AC charger adapter apart from the one certified by Agilent with
this product.
• Do not use repaired fuses or short-circuited fuse-holders. For continued protection
against fire, replace the line fuses only with fuses of the same voltage and current
rating and recommended type.
• Do not service or perform adjustments alone. Under certain condition, hazardous
voltages may exist, even with the equipment switched off. To avoid dangerous electric
shock, service personnel must not attempt internal service or adjustment unless
another person, capable of rendering resuscitation or first aid, is present.
• Do not substitute parts or modify equipment to avoid the danger of introducing
additional hazards. Return the product to the nearest Agilent Technologies Sales and
Service office for service and repair to ensure the safety features are maintained.
• Do not operate damaged equipment as the safety protection features built into this
product may have been impaired, either through physical damage, excessive
moisture, or any other reason. Remove power and do not use the product until safe
operation can be verified by service-trained personnel. If necessary, return the
product to the nearest Agilent Technologies Sales and Service office for service and
repair to ensure the safety features are maintained.

VI U1253A User’s and Service Guide
CAUTION
•Turn off circuit power and discharge all high-voltage capacitors in the circuit before you
perform resistance and capacitance measurements or continuity and diodes tests.
•Use the correct terminals, function, and range for your measurements.
•Never measure voltage when current measurement is selected.
•Use only the recommended rechargeable battery. Ensure proper insertion of battery in
the multimeter, and follow the correct polarity.
•Disconnect test leads from all the terminals during battery charging.

U1253A User’s and Service Guide VII
Environmental Conditions
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 Full accuracy from –20 °C to 55 °C
Operating humidity Full accuracy up to 80% R.H. (relative
humidity) for temperature up to 35 °C,
decreasing linearly to 50% R.H. at 55 °C
Storage temperature –40 °C to 70 °C (with battery removed)
Altitude Up to 2000 m
Pollution degree Pollution Degree 2
CAUTION
The U1253A True RMS OLED Multimeter complies with the following
safety and EMC requirements.
•IEC 61010-1:2001/EN61010-1:2001 (2nd Edition)
•Canada: CAN/CSA-C22.2 No. 61010-1-04
•USA: ANSI/UL 61010-1:2004
•IEC61326-1:2005 / EN61326-1:2006
•Canada: ICES-001:2004
•Australia/New Zealand: AS/NZS CISPR11:2004

VIII U1253A 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.
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.
ICES/NMB-001 indicates that this ISM
device complies with the Canadian
ICES-001.
Cet appareil ISM est confomre a la
norme NMB-001 du Canada.
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.
The CSA mark is a registered
trademark of the Canadian Standards
Association.

U1253A User’s and Service Guide IX
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 as shown below.
Do not dispose in domestic household waste
To return this unwanted instrument, contact your nearest Agilent
Technologies, or visit:
www.agilent.com/environment/product
for more information.
Agilent Technologies, through Rechargeable Battery Recycling Corporation (RBRC), offers free and convenient
battery recycling options in the U.S. and Canada. Contact RBRC at 877-2-RECYCLE (877.273.2925) or online at:
http://www.call2recycle.org/ for the nearest recycling location.

X U1253A User’s and Service Guide
In This Guide…
1 Getting Started Tutorial
This chapter contains a brief description of the U1253A true RMS OLED
multimeter front panel, rotary switch, keypad, display, terminals, and rear
panel.
2 Making Measurements
This chapter contains detailed information on how to take measurements
using the U1253A true RMS OLED multimeter.
3 Functions and Features
This chapter contains detailed information on functions and features
available in the U1253A true RMS OLED multimeter.
4 Changing the Default Settings
This chapter describes how to change the default factory settings of the
U1253A true RMS OLED multimeter and other available setting options.
5 Maintenance
This chapter will help you troubleshoot a malfunctioning U1253A true
RMS OLED multimeter.
6 Performance Tests and Calibration
This chapter contains the performance test procedures and adjustment
procedures. The performance test procedures allow you to verify that the
U1253A true RMS OLED multimeter is operating within its published
specifications. If these performance tests reveal any measurement
function to be out of specification, you may calibrate the said function by
following the relevant adjustment procedures.
7 Specifications
This chapter details the specifications of the U1253A true RMS OLED
multimeter.