Agilent Technologies U1731B Manual

Agilent Technologies
Agilent U1731B/U1732B
Dual Display Handheld
LCR Meter
User’s and Service Guide

II U1731B/U1732B User’s and Service Guide
Notices
© Agilent Technologies, Inc. 2009 – 2012
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
U1731-90059
Edition
Third Edition, March 21, 2012
Printed in Malaysia
Agilent Technologies, Inc.
5301 Stevens Creek Blvd.
Santa Clara, CA 95051 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
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
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ware and technical data rights granted to
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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.

U1731B/U1732B User’s and Service Guide III
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 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 U1731B/U1732B User’s and Service Guide
Regulatory Markings
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.
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 Canadian
ICES-001.
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.

U1731B/U1732B User’s and Service Guide V
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 for design, manufacture, and
intended use of the instrument. Agilent Technologies assumes no liability
for the customer’s failure to comply with these requirements.
WARNING
• This meter is for indoor use at an altitude of up to 2,000 m.
• The warnings and precautions should be read and well understood
before the meter is used.
• Use this meter only as specified in this manual; otherwise, the
protection provided by the meter may be impaired.
• When measuring in-circuit components, first de-energize the
circuits before connecting them to the test leads.
• Discharge the capacitor before testing.
• The meter is safety-certified in compliance with IEC 61010-1.
• Use the meter only as specified in this manual. Otherwise, the
protection provided by the meter may be impaired.
• The power for the meter is supplied with a single standard 9 V
battery. Line operation is also possible using a 12 VAC to DC adaptor.
If a power adaptor is selected, please be sure to meet the safety
requirements of a relevant IEC standard.
CAUTION
• Ensure proper insertion of the battery in the LCR meter, and follow the
correct polarity.

VI U1731B/U1732B User’s and Service Guide
Environmental Conditions
This instrument is designed for indoor use in areas with low condensation
and to be used with standard or compatible test probes. Table 1 shows
general environment requirements.
Table 1 Environment requirements
Environment Conditions Requirements
Operating environment 0 °C to 40 °C; 0 – 70% R.H.
Storage humidity 0 – 80% R.H. non condensing
Storage environment –20 °C to +50 °C; 0 – 80% R.H.
Altitude 0 – 2,000 meters
Pollution degree Pollution degree 2

U1731B/U1732B User’s and Service Guide VII
CAUTION
The U1731B/U1732B dual display handheld LCR meter complies with
the following safety and EMC requirements:
• IEC 61010-1:2001/EN 61010-1:2001 (2nd Edition)
• CISPR 11:2003+A1:2004
• IEC 61000-4-2:1995+A1:1998 +A2:2000
• IEC 61000-4-3:2006
• IEC 61000-4-4:2004
• IEC 61000-4-5:2005
• IEC 61000-4-6:2003+A1:2004+A2:2006
• IEC 61000-4-11:2004
• Canada: ICES/NMB-001:2004
• Australia/New Zealand: AS/NZS CISPR11:2004
CAUTION
Degradation of some product specifications can occur in the presence
of ambient electromagnetic (EM) fields and noise that affects the
product's power line, communication, or I/O cables. The product
self-recovers and operates to all specifications when:
• the source of the ambient EM field and noise is removed,
• the product is protected from the ambient EM field, or
• the product cabling is shielded from the ambient EM noise.

VIII U1731B/U1732B User’s and Service Guide
Declaration of Conformity (DoC)
The Declaration of Conformity (DoC) for this instrument is available on the Web
site. You can search the DoC by its product model or description.
http://regulations.corporate.agilent.com/DoC/search.htm
NOTE
If you are unable to search for the respective DoC, please contact your local
Agilent representative.

U1731B/U1732B User’s and Service Guide IX
In This Guide…
1Getting Started Chapter 1 introduces key features and steps to get started
with a U1731B/U1732B dual display handheld LCR meter. This chapter also
guides you through the basics of the front panel operations.
2Features and Functions Chapter 2 explains how to set up connections to
perform meter measurements. It also describes the features and functions that
are available in the U1731B/U1732B dual display handheld LCR meter in
step-by-step instructions.
3Service and Maintenance Chapter 3 explains the services and maintenance
procedures for the U1731B/U1732B dual display handheld LCR meter.
4Specifications Chapter 4 lists the specifications and characteristics of the
U1731B/U1732B dual display handheld LCR meter.

X U1731B/U1732B User’s and Service Guide

U1731B/U1732B User’s and Service Guide XI
Contents
Contents
1 Getting Started
Introduction 2
Checking the Shipping Contents 3
The Front Panel at a Glance 4
Display Annunciators 5
The Keypad at a Glance 7
The Input Terminal at a Glance 8
2 Features and Functions
Inductance Measurement 10
Capacitance Measurement 11
Resistance Measurement 12
Data Hold 13
Static Recording 13
Dissipation Factor/Quality Factor/Phase Angle 13
Test Frequency 14
LCR Function Selector 14
Relative 14
Tolerance 15
Auto/Manual Range 15
Automatic Fuse Detection 16
Parallel/Series Mode 16
CAL Function 17
Enable/Disable Auto Power-Off 19
Low Battery Indication 19
Backlit Display (Only Available for U1732B) 19
Communication (Optional Accessories) 20
3 Service and Maintenance
Service 22
Battery Replacement 22

XII U1731B/U1732B User’s and Service Guide
Contents
Fuse Replacement 24
Replacement Parts 25
Cleaning the LCR Meter 26
Specification Validation 27
4 Specifications
U1731B Electrical Specifications 26
U1732B Electrical Specifications 29
General Specifications 33
SMD Tweezers Specifications 35

1
U1731B/U1732B Dual Display Handheld LCR Meter
User’s and Service Guide
Agilent Technologies
1
Getting Started
Introduction 2
Checking the Shipping Contents 3
The Front Panel at a Glance 4
Display Annunciators 5
The Keypad at a Glance 7
The Input Terminal at a Glance 8
This chapter introduces the key features and getting- started tips for the
U1731B/U1732B dual display handheld LCR meter. This chapter also
guides you through the basics of the front panel operations.

2 U1731B/U1732B User’s and Service Guide
1GettingStarted
Introduction
The 20,000- count dual display handheld LCR meters (U1731B and
U1732B) are special microprocessor- controlled meters for inductance,
capacitance, and resistance measurements. The LCR meter is simple to
operate and is capable of making absolute parallel mode measurements as
well as series mode measurement. The LCR meter provides direct and
accurate measurements of inductors, capacitors, and resistors with
different testing frequencies. It offers both automatic and manual range
selection.
The front panel keypad makes it convenient to select features and
functions such as data hold, maximum, minimum, and average record
mode, relative mode, tolerance sorting mode, frequency selection, and LCR
selection. The test data can be transferred to a PC via an optional full
isolated optical IR- USB interface. The U1732B offers backlight display
capability for better visibility in the dark.
A tilt stand gives you flexibility in positioning the LCR meter for viewing
and operating. The over- molding rubber case protects the LCR meter.
Single 9 V battery operation is standard for the LCR meter, but a DC 12 V
power adaptor can also be used as a power input.

Getting Started 1
U1731B/U1732B User’s and Service Guide 3
Checking the Shipping Contents
Inspect and verify that you have received the following items for the
standard purchase of the U1731B/U1732B and/or accessories that you may
have ordered. If any of the item listed below are missing, contact your
nearest Agilent Technologies sales office.
Table 1- 1 List of standard and optional accessories
Type Part Number Accessories
Standard Agilent U1731B/U1732B Quick Start Guide
Alligator clip leads
9 V Alkaline battery
Certificate of Calibration (CoC)
Optional U5481A IR to USB cable
U1780A Power adaptor
U1782A SMD tweezers
U1174A Soft carrying case

4 U1731B/U1732B User’s and Service Guide
1GettingStarted
The Front Panel at a Glance
Figure 1-1 Front panel of U1731B and U1732B dual display handheld LCR meter
U1732B
U1731B
Annunciator
display
Keypad
Input
terminals

Getting Started 1
U1731B/U1732B User’s and Service Guide 5
Display Annunciators
Figure 1-2 LCD display
Table 1- 1 Descriptions of each annunciator
No. Symbols Descriptions
1 Low battery indicator
2 Reading out of LO limit
3 Primary display
4 Reading out of HI limit
5 Auto power off indicator
6TOL 1% 5% 10% 20% Tolerance mode, to set 1%, 5%, 10%, and 20% for sorting
capacitance
7AUTO AUTO range
8CInductance, Capacitance, or Resistance (L,C, or R) function
indicator
15
5
4
3
2
6
1
8
17
21
23
24
7
11
14
20
22
25
16
18
19
13
10 12
9

6 U1731B/U1732B User’s and Service Guide
1GettingStarted
Special indication characters
9
MAX AVG MIN Static recording mode
MAX: Maximum reading
AVG: Average reading
MIN: Minimum reading
10 REL Relative mode
11 DH Data hold to hold the displayed digital value
12 qPhase angle indicator (only applicable for U1732B)
13 DDissipation factor indicator
14 QQuality factor indicator
15 Secondary display
16 Audible alert for tolerance and compare mode
17 %Unit for tolerance display (percentage)
18 deg Unit for phase angle (degree) (only applicable for U1732B)
19 kHz Unit for beeper frequency as setup mode
20 PAL Parallel mode indicator
21 SER Series mode indicator
22 mkWUnit for resistance (kΩand MΩ)
23 Unit for inductance (µH and mH)
24 Unit for capacitance (pF, nF, µF, and mF)
25 Remote control
Descriptions Descriptions
Indicates short connectors Indicates calibration mode
Indicates open connectors Indicates damaged or open
fuse

Getting Started 1
U1731B/U1732B User’s and Service Guide 7
The Keypad at a Glance
Figure 1-3 Keypad of U1731B/U1732B dual display handheld LCR meter
Table 1- 2 Keypad descriptions and functions
No. Keys Functions
1 Power To turn ON/OFF the instrument
2 D/Q/θTo select dissipation factor, quality factor, and phase angle display
(only applicable for U1732B)
3L/C/R
P↔S
To select inductance, capacitance, and resistance measurement
To toggle parallel and series mode
4TOL Tolerancemode
5 FREQ To select test frequency
6REL
CAL
Relative mode
Calibration mode
7Manual
AUTO
Manual range
Auto range
8HOLD
REC
Data hold
Static recording mode
9REMOTE To toggle ON/OFF the remote function
Backlight display (only applicable for U1732B)
8
5
4
1
2
3
9
7
6

8 U1731B/U1732B User’s and Service Guide
1GettingStarted
The Input Terminal at a Glance
Figure 1-4 Input terminals/sockets of U1731B/U1732B dual display handheld LCR meter
WARNING
To avoid damaging this instrument, do not exceed the input limit. Do not apply
voltage to input terminals. Discharge the capacitor before testing.
No. Terminals Functions
1+Positive terminal/socket
2–Negative terminal/socket
3 GUARD Guard terminal/socket
123