Data Sheet
Keysight Technologies
U1730C Series
Handheld LCR Meters
Take your expectations higher
with the latest LCR meters
The Keysight Technologies, Inc. U1730C Series handheld LCR meters allow you to measure at
frequencies as high as 100 kHz—a capability typically found only in benchtop meters. Get
measurements done faster using the one-touch automatic identication function button which
displays component type and more detailed component analysis such as Z, ESR, and DCR. Ideal for
testing on the go, these LCR meters operate on a battery that lasts up to 16 hours. With the U1730C
Series that is built for your convenience, you can perform quick and basic LCR measurements at an
affordable price.
Introduction
03 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
Features
Key features
– 20,000 counts resolution
– 0.2% basic accuracy
– Wide LCR ranges with three to five
selectable test frequencies (up to 100
kHz for U1733C)
– Auto identification (Ai) automatically
determines and displays component
type and measurements
– Detailed component analysis with DCR,
ESR, Z, D, Q, and θ functions
– Battery life of 16 hours/AC-powered
– IR-to-USB connectivity for data logging
to PC
Frequency up to 100 kHz
The test frequency now extends as high as
100 kHz, providing more flexibility to test a
wider range of components. A higher test
frequency, for example 100 kHz, is useful
for applications such as testing aluminum
electrolytic capacitors used in switching
power supply circuits.
Automated identification
With Ai the testing and measuring experi-
ence is easy; eliminating unnecessary trial
and error time—with just a single push
of a button. This unique feature automati-
cally specifies L, C, or R with parallel and
series mode, without the need to manually
change buttons.
Detailed component analysis
The handheld LCR meters allows you to
test various component types, including
secondary components of Dissipation
Factor (D), Quality Factor (Q), and Angle
Indication of Impedance (θ). This new
handheld series also includes other
functions that result in a more detailed
component analysis. For example, the
built-in Equivalent Series Resistance (ESR)
function helps you better understand
the inherent resistance behavior typi-
cally found in capacitors across selected
frequencies. DCR is a built-in DC resistance
measurement that eliminates the use of
a separate digital multimeter (DMM) for
component test.
Figure 1. Automate the recording of continuous readings when you hook the U1731C/U1732C/U1733C to a PC
04 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
Take a Closer Look
Visible and audible toler-
ance mode for component
sorting
Maximum, Minimum and
Average values recording
Ai helps identify L, C,
and R components
automatically according
to level of impedance
ESR function for capaci-
tance series resistance
analysis
Auto calculation of Phase
Angle, Dissipation Factor,
and Quality Factor
To select desired Z,
L, C, or R function
To enter rolerance range
of 1%, 5%, 10%, and 20%
Backlight function to ease
viewing in subdued lighting
(only in U1732C/U1733C)
Secondary display
20,000 counts resolution
Data Hold function to
freeze and save mea-
sured values
To select desired test
frequency:
– U1731C: Up to 1 kHz
– U1732C: Up to 10 kHz
– U1733C: Up to 100 kHz
To enable DCR measurement
(only in U1733C)
Allows manual or auto
ranging to be used
interchangeably
To enter relative mode and
stores display reading as a
reference value
Figure 2. Front view of the U1733C
05 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
U1731C/U1732C/U1733C Electrical Specifications
Accuracy is given as ±(% of reading + counts of least significant digit) at 23 °C ± 5 °C, with relative humidity less than 80%. Please refer to
the User Guide about the measuring mode specified for each range of L/C/R, series or parallel mode. Measurements performed at the test
socket and necessary Open and Short corrections must prior be done. The accuracy is verified by design and specified type tests.
Impedance/Resistance
Range Resolution
Accuracy = AZ + Offset
U1731C/U1732C/U1733C U1732C/U1733C U1733C
100 Hz 120 Hz 1 kHz 10 kHz 100 kHz DCR
2 Ω10.0001 Ω 0.7% + 50 0.7% + 50 0.7% + 50 0.7% + 50 1.0% + 50 0.7% + 50
20 Ω10.001 Ω 0.7% + 8 0.7% + 8 0.7% + 8 0.7% + 8 0.7% + 8 0.7% + 8
200 Ω10.01 Ω 0.2% + 3 0.2% + 3 0.2% + 3 0.2% + 3 0.5% + 5 0.2% + 3
2000 Ω 0.1 Ω 0.2% + 3 0.2% + 3 0.2% + 3 0.2% + 3 0.5% + 5 0.2% + 3
20 kΩ 0.001 kΩ 0.2% + 3 0.2% + 3 0.2% + 3 0.2% + 3 0.5% + 5 0.2% + 3
200 kΩ 0.01 kΩ 0.5% + 5 0.5% + 5 0.5% + 5 0.5% + 5 0.7% + 8 0.5% + 5
2000 kΩ 0.1 kΩ 0.5% + 5 0.5% + 5 0.5% + 5 0.7% + 5 NA 0.5% + 5
20 MΩ 0.001 MΩ 2.0% + 8 2.0% + 8 2.0% + 8 5.0% + 8 NA 2.0% + 8
200 MΩ 0.01 MΩ 6.0% + 80 6.0% + 80 6.0% + 80 NA NA 6.0% + 80
The accuracy for ranges 2 Ω to 200 Ω is specified after Null function is used to subtract the resistance of test leads and the contact resistance.
Notes:
a. For the ranges of 20 MΩ and 200 MΩ, the R.H. is specified for < 60%
b. Resistance is specified to Q < 10 and D > 0.1, otherwise the accuracy is (AZ + Offset) x √ 1 + Q2
c. Equivalence Series Resistance (ESR) measurement is determined by impedance measurement and range. The maximum
display is up to 199.99 kΩ and the accuracy is (AZ + Offset) x √ 1 + Q2
Capacitance
Range Resolution
Accuracy = AC + Offset
U1731C/U1732C/U1733C U1732C/U1733C U1733C
100 Hz 120 Hz 1 kHz 10 kHz 100 kHz
20 mF 0.001 mF 0.5% + 8 0.5% + 8 NA NA NA
2000 μF 0.1 μF 0.5% + 5 0.5% + 5 0.5% + 8 NA NA
200 μF 0.01 μF 0.3% + 3 0.3% + 3 0.5% + 5 0.5% + 8 NA
20 μF 0.001 μF 0.2% + 3 0.2% + 3 0.2% + 3 0.5% + 5 5.0% + 10
2000 nF 0.1 nF 0.2% + 3 0.2% + 3 0.2% + 3 0.2% + 3 0.7% + 10
200 nF 0.01 nF 0.2% + 3 0.2% + 3 0.2% + 3 0.5% + 3 0.7% + 10
20 nF 0.001 nF 0.5% + 5 0.5% + 5 0.2% + 3 0.5% + 3 0.7% + 10
2000 pF10.1 pF 0.5% + 10 0.5% + 10 0.5% + 5 0.5% + 3 2.0% + 10
200 pF10.01 pF NA NA 0.5% + 10 0.8% + 10 2.0% + 10
20 pF10.001 pF NA NA NA 1.0% + 20 2.5% + 10
This accuracy for the ranges of 20 pF~2000 pF is specified after Math Null which is used to substrate the stray capacitances for test leads.
Notes:
a. The accuracy for the ceramic capacitor will be influenced depending on the dielectric constant (K) of the material used to make
the ceramic capacitor. For related influence factors, please refer to the Component dependency factors section in the Impedance
Measurement Handbook, downloadable for free at http://www.keysight.com/find/lcrmeters
06 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
Inductance
Range Resolution
Accuracy = AL + Offset
U1731C/U1732C/U1733C U1732C/U1733C U1733C
100 Hz 120 Hz 1 kHz 10 kHz 100 kHz
20 μH 0.001 μH NA NA NA 1.0% + 5 2.5% + 20
200 μH 0.01μH NA NA 1.0% + 5 0.7% + 3 2.5% + 20
2000 μH 0.1 μH 0.7% + 10 0.7% + 10 0.5% + 3 0.5% + 3 0.8% + 20
20 mH 0.001 mH 0.5% + 3 0.5% + 3 0.2% + 3 0.3% + 3 0.8% + 10
200 mH 0.01 mH 0.5% + 3 0.5% + 3 0.2% + 3 0.2% + 3 1.0% + 10
2000 mH 0.1 mH 0.2% + 3 0.2% + 3 0.2% + 3 0.5% + 5 1.0% + 10
20 H 0.001 H 0.2% + 3 0.2% + 3 0.5% + 5 1.0% + 5 2.0% + 10
200 H 0.01 H 0.7% + 5 0.7% + 5 1.0% + 5 2.0% + 8 NA
2000 H 0.1 H 1.0% + 5 1.0% + 5 2.0% + 8 NA NA
Phase Angle of Impedance
Range Resolution Accuracy (θe) Condition
–180° ~180° 0.1°/1° (AZ + Offset/Zx) x180/π D < 1 or Q > 1
Impedance Zx AZ Offset θe
1999.9 Ω 19999 0.2% 3 ±0.12 °
199.9 Ω 1999 0.2% 3 ±0.20 °
19.9 Ω 199 0.2% 3 ±0.98 °
1.9 Ω 19 0.2% 3 ±9.16 °
Notes:
a. Specifications are applicable to all models (U1731C, U1732C, and U1733C) unless specified
b. The “AZ” and Offset are the accuracy specified at impedance
c. The “π” is approximately 3.14159
Dissipation/Quality Factor
Function Range Accuracy (De) Condition
Z 0.001~999 AZ + Offset/Zx x 100% + 3 D < 1 or Q > 1
L 0.001~999 AL + Offset/Lx x 100% + 3 D < 1 or Q > 1
C 0.001~999 AC + Offset/Cx x 100% + 3 D < 1 or Q > 1
Capacitance Cx AC Offset De
88.88 μF 8888 0.2% 3 0.334% + 3
Notes:
1. Specifications are applicable to all models (U1731C, U1732C, and U1733C) unless specified
2. The “AZ, AL, AC” and Offset are the accuracy specified at Impedance, Inductance, and Capacitance, respectively
3. The Zx, Lx, and Cx are the display count of the reading. For example, the Cx is 8888 as if the capacitance is 88.88 μF for the range of
200 μF.
4. The Quality Factor is the reciprocal of Dissipation Factor
U1731C/U1732C/U1733C Electrical Specifications
07 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
U1731C/U1732C/U1733C Electrical Specifications
Test Signal
Model Selection
Test signal level Test frequency
Level Accuracy Frequency Accuracy
U1731C/U1732C/U1733C 100 Hz 0.74 Vrms 0.05 Vrms 100 Hz 0.01%
120 Hz 0.74 Vrms 0.05 Vrms 120.481 Hz 0.01%
1 kHz 0.74 Vrms 0.05 Vrms 1 kHz 0.01%
U1732C/1733C 10 kHz 0.70 Vrms 0.05 Vrms 10 kHz 0.01%
U1733C 100 kHz 0.70 Vrms 0.05 Vrms 100 kHz 0.01%
DCR +1.235 V 0.05 V NA NA
Source Impedance of Impedance/Resistance Measurement
Range
Typical source impedance
U1731C/U1732C/U1733C U1732C/U1733C U1733C
100 Hz 120 Hz 1 kHz 10 kHz 100 kHz DCR
2 Ω 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω
20 Ω 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω
200 Ω 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω
2000 Ω 1 kΩ 1 kΩ 1 kΩ 1 kΩ 1 kΩ 1 kΩ
20 kΩ 10 kΩ 10 kΩ 10 kΩ 10 kΩ 1 kΩ 10 kΩ
200 kΩ 100 kΩ 100 kΩ 100 kΩ 10 kΩ 1 kΩ 100 kΩ
2000 kΩ 100 kΩ 100 kΩ 100 kΩ 10 kΩ NA 100 kΩ
20 MΩ 100 kΩ 100 kΩ 100 kΩ 100 kΩ NA 100 kΩ
200 MΩ 100 kΩ 100 kΩ 100 kΩ NA NA 100 kΩ
Source Impedance of Capacitance Measurement
Range
Typical source impedance
U1731C/U1732C/U1733C U1732C/U1733C U1733C
100 Hz 120 Hz 1 kHz 10 kHz 100 kHz
20 mF 100 Ω 100 Ω NA NA NA
2000 μF 100 Ω 100 Ω 100 Ω NA NA
200 μF 100 Ω 100 Ω 100 Ω 100 Ω NA
20 μF 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω
2000 nF 1 kΩ 1 kΩ 100 Ω 100 Ω 100 Ω
200 nF 10 kΩ 10 kΩ 1 kΩ 100 Ω 100 Ω
20 nF 100 kΩ 100 kΩ 10 kΩ 1 kΩ 100 Ω
2000 pF 100 kΩ 100 kΩ 100 kΩ 10 kΩ 1 kΩ
200 pF NA NA 100 kΩ 10 kΩ 1 kΩ
20 pF NA NA NA 100 kΩ 1 kΩ
08 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
U1731C/U1732C/U1733C Electrical Specifications
Source Impedance of Inductance Measurement
Range
Typical source impedance
U1731C/U1732C/U1733C U1732C/U1733C U1733C
100 Hz 120 Hz 1 kHz 10 kHz 100 kHz
20 μH NA NA NA 100 Ω 100 Ω
200 μH NA NA 100 Ω 100 Ω 100 Ω
2000 μH 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω
20 mH 100 Ω 100 Ω 100 Ω 100 Ω 100 Ω
200 mH 100 Ω 100 Ω 100 Ω 1 kΩ 1 kΩ
2000 mH 100 Ω 100 Ω 1 kΩ 10 kΩ 1 kΩ
20 H 1 kΩ 1 kΩ 10 kΩ 10 kΩ 1 kΩ
200 H 10 kΩ 10 kΩ 100 kΩ 100 kΩ NA
2000 H 100 kΩ 100 kΩ 100 kΩ NA NA
09 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
General Specifications
Parameter U1731C U1732C U1733C
Measurements Z/L/C/R/D/Q/θ/ESR Z/L/C/R/D/Q/θ/ESR Z/L/C/R/D/Q/θ/ESR/DCR
Display Primary display: Maximum display 19,999 counts
Secondary display: Maximum display 999 counts
Automatic polarity indication
Test frequency (Accuracy =
± 0.1% of actual test frequency)
100 Hz, 120 Hz, 1 kHz 100 Hz, 120 Hz, 1 kHz, 10 kHz 100 Hz, 120 Hz, 1 kHz, 10 kHz, 100 kHz
Backlight No Yes Yes
Test signal level Selection Test signal level Test frequency
100 Hz 0.74 Vrms 100 Hz
120 Hz 0.74 Vrms 120.481 Hz
1 kHz 0.74 Vrms 1 kHz
10 kHz10.74 Vrms 10 kHz
100 kHz20.74 Vrms 100 kHz
DCR2+1.235 V NA
Tolerance mode 1%, 5%, 10%, 20%
Ranging mode Auto and manual
Measurement rate 1 time/second, nominal
Response time Approximately 1 second/DUT (Device Under Test)
Auto power-off ~0-99 mins without operation
Power supply Single standard 9 V battery (alkaline or carbon-zinc) or optional power adaptor
Power consumption 225 mVA maximum without backlight
Input protection fuse Resettable over-current protection
Battery life 16 hours based on alkaline battery
Low battery indicator [ ] will appear when voltage drops below ~7.2 V
Operating temperature –10 to 55 °C, 0 to 80% R.H.
Storage temperature –20 to 70 °C, 0 to 80% R.H. without battery
Temperature coefficient 0.1 × (specified accuracy)/°C (from –10 to 18 °C or 28 to 55 °C)
Relative humidity Maximum 80% R.H. for temperature up to 30 °C decreasing linearly to 50% R.H. at 55 °C
Weight 337 grams with battery
Dimensions (H x W x D) 184 mm x 87 mm x 41 mm
Safety and EMC Compliance In compliance with EN61010-1 (IEC61010-1:2001) for low voltage directive and Pollution Degree II
Environment. Susceptibility and Emissions (EMC): Commercial Limits per EN61326-1
Calibration One-year calibration cycle recommended
Warranty – 3 years for main unit
– 3 months for standard shipped accessories
Only applicable for U1732C/U1733C
Only applicable for U1733C
10 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
Ordering Information
Standard shipped items
Standard U1731C, U1732C, and U1733C ordering include: – Quick Start Guide
– Certificate of Calibration (CoC)
– Alligator clip leads
– 9 V alkaline battery
Recommended accessories
U1731P Combo Kit
Includes one U1731C Series handheld and four accessories:
– U5491A soft carrying case
– U5481A IR-to-USB cable
– U1780A AC adaptor
– U1782A SMD tweezer
U1732P Combo Kit
Includes one U1732C Series handheld and four accessories:
– U5491A soft carrying case
– U5481A IR-to-USB cable
– U1780A AC adaptor
– U1782A SMD tweezer
U1733P Combo Kit
Includes one U1733C Series handheld and four accessories:
– U5491A soft carrying case
– U5481A IR-to-USB cable
– U1780A AC adaptor
– U1782A SMD tweezer
U1174A Soft carrying case
U5481A IR-to-USB cable
U1782A SMB tweezer
U1780A Power adaptor and cord (according to country)
U1781A Alligator clip leads
myKeysight
www.keysight.com/find/mykeysight
A personalized view into the information most relevant to you.
www.axiestandard.org
AdvancedTCA® Extensions for Instrumentation and Test (AXIe) is an
open standard that extends the AdvancedTCA for general purpose and
semiconductor test. Keysight is a founding member of the AXIe consortium.
www.lxistandard.org
LAN eXtensions for Instruments puts the power of Ethernet and the
Web inside your test systems. Keysight is a founding member of the LXI
consortium.
www.pxisa.org
PCI eXtensions for Instrumentation (PXI) modular instrumentation delivers a
rugged, PC-based high-performance measurement and automation system.
Three-Year Warranty
www.keysight.com/find/ThreeYearWarranty
Beyond product specification, changing the ownership experience.
Keysight is the only test and measurement company that offers three-year
warranty on all instruments, worldwide.
www.keysight.com/quality
Keysight Electronic Measurement Group
DEKRA Certified ISO 9001:2008
Quality Management System
Keysight Channel Partners
www.keysight.com/find/channelpartners
Get the best of both worlds: Keysight’s measurement expertise and product
breadth, combined with channel partner convenience.
www.keysight.com/find/handheldlcr
This information is subject to change without notice.
© Keysight Technologies, 2013 - 2014
Published in USA, August 3, 2014
5990-7778EN
www.keysight.com
11 | Keysight | U1730C Series Handheld LCR Meters – Data Sheet
For more information on Keysight
Technologies’ products, applications or
services, please contact your local Keysight
office. The complete list is available at:
www.keysight.com/find/contactus
Americas
Canada (877) 894 4414
Brazil 55 11 3351 7010
Mexico 001 800 254 2440
United States (800) 829 4444
Asia Pacic
Australia 1 800 629 485
China 800 810 0189
Hong Kong 800 938 693
India 1 800 112 929
Japan 0120 (421) 345
Korea 080 769 0800
Malaysia 1 800 888 848
Singapore 1 800 375 8100
Taiwan 0800 047 866
Other AP Countries (65) 6375 8100
Europe & Middle East
Austria 0800 001122
Belgium 0800 58580
Finland 0800 523252
France 0805 980333
Germany 0800 6270999
Ireland 1800 832700
Israel 1 809 343051
Italy 800 599100
Luxembourg +32 800 58580
Netherlands 0800 0233200
Russia 8800 5009286
Spain 0800 000154
Sweden 0200 882255
Switzerland 0800 805353
Opt. 1 (DE)
Opt. 2 (FR)
Opt. 3 (IT)
United Kingdom 0800 0260637
For other unlisted countries:
www.keysight.com/find/contactus
(BP-05-19-14)