GW Instek LCR-914 Series User manual

Hand-held LCR Meter
LCR-914/915/916 Series
USER MANUAL
GW INSTEK PART NO. 82CR-91600MA1
ISO-9001 CERTIFIED
MANUFACTURER

This manual contains proprietary information, which is
protected by copyright. All rights are reserved. No part of this
manual may be photocopied, reproduced or translated to
another language without prior written consent of Good Will
company.
The information in this manual was correct at the time of
printing. However, Good Will continues to improve products and
reserves the right to change specification, equipment, and
maintenance procedures at any time without notice.
Good Will Instrument Co., Ltd.
No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.

LCR-914/915/916 User Manual
1
Read First
Safety Information
Understand and follow the operating instructions carefully. Use
the meter only as specified in this manual; otherwise, the
protection provided by the meter may be impaired.

WARNING
Identifies hazardous conditions and actions that could cause
BODILY HARM or DEATH.
CAUTION
Identifies conditions and actions that could DAMAGE the meter
or equipment under test.
WARNING
˙When using testleads or probes, keep your fingers behind the
finger guards.
˙Remove test leads from the Meter before opening the battery
door or the Meter case.
˙Use the Meter only as specified in this manual or the
protection by the Meter might be impaired.
˙Always use thecorrect terminals, switch positions, and ranges
for measurements.
˙Do not apply more than the rated voltage, as marked on
Meter, between terminals or between any terminal and
earth ground.
˙Use caution with voltages above 30 Vac rms, 42 Vac peak, or
60 Vdc. These voltages pose a shock hazard.
˙To avoid false readings that can lead to electric shock and
injury, replace the battery when the low battery indicator
appears.
˙Discharge all high-voltage capacitors before testing.
˙Do not use the Meter around explosive gas or vapor.
˙To reduce the risk of fire or electric shock do not expose this
product to rain or moisture.
Warning
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . .
Safety sheet
. . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . .
. . . . . . . . .

LCR-914/915/916 User Manual
2
CAUTION
˙Neverconnect asource of voltage thatcould resultin damage
to the meter and the equipment under test.
˙Do not expose the Meter to extremes in temperature or high
humidity.
Symbols as Marked on the Meter and the
Instruction Manual
Risk of electric shock
See instruction manual
DC measurement
Battery

Fuse
Earth
AC measurement
Conforms to EU directives
Do not discard this product or throw away.
Maintenance
Do not attempt to repair this Meter. It contains no user
serviceable parts. Repair or servicing should only be performed
by qualified personnel.
Cleaning
Periodically wipe the case with a dry cloth and detergent.
Do not use abrasives or solvents.

LCR-914/915/916 User Manual
3
Meter Description
Front Panel Illustration
1. LCD display: 20000/2000 counts.
2. Function buttons.
3. 5-Wire input terminal for SMD test probe or DIP part.
4. 2-Wire input terminal for Alligator Clips.

LCR-914/915/916 User Manual
4
Package Contents
1. 5V AC Adapter (only LCR-916).
2. USB Cable (only LCR-916).
3. Shorting Cube.
4. SMD Test Probe (only LCR-916).
5. Alligator Clip Set.
6. Hanging Kit (only LCR-915/916).

LCR-914/915/916 User Manual
5
Measuring Principles




tan
D
1
Q
RXX
tan
C
1
fC21
X
LfL2X
RXX
tan)X(XRZ
)Xj(XRE
CL
1
C
L
CL
1
CL
2
CL
























Series Measurement
Parallel Measurement
SS jXRZ 
PP jX
1
R
1
Y
PP jXR
Y11 

LCR-914/915/916 User Manual
6
Phase Drawing

LCR-914/915/916 User Manual
7
Making 5-Wire Measurements with the SMD
Test Probe

LCR-914/915/916 User Manual
8
Making 4-Wire Measurements with the 5-Wire
Terminal
Making 2-Wire Measurements with the Alligator
Clip Set

LCR-914/915/916 User Manual
9
Measuring L/C/R/DCR
• Press the L/C/R/DCR button to select the measurement
function.
• Press the L/C/R/DCR button for 2 seconds to enter the Auto
L/C/R function.

LCR-914/915/916 User Manual
10
Measuring D/Q/ESR/θ
• Press the D/Q/ESR/θbutton to select the measurement
function.

LCR-914/915/916 User Manual
11
Selecting the Test Frequency
• Press the FREQ button to select the test frequency.
• The selectable frequency range depends on the model:
LCR-914: 100Hz, 120Hz, 1kHz.
LCR-915: 100Hz, 120Hz, 1kHz, 10kHz.
LCR-916: 100Hz, 120Hz, 1kHz, 10kHz, 100kHz.

LCR-914/915/916 User Manual
12
Selecting the Series / Parallel Measurement
Function
• At the L/C/R measuring function, it defaults to Auto Series /
Parallel measuring function.
• Press the SER/PAL button to select the measuring function.

LCR-914/915/916 User Manual
13
Selecting the Display Count
• Press the 2000 /20000 button to select the display count.
Zero
The Zero mode records the current input value as a reference
and displays the reference on the sub display. Any inputs after
this will be subtracted from the reference value and displayed on
the main display. To use the Zero mode, follow the steps below.
1. Press the Zero button to enter Zero mode. The “Δ” symbol
appears on the display.
2. Press the Zero button again to record a new input value as a
reference.
3. Hold the Zero button for 2 seconds to exit this mode.

LCR-914/915/916 User Manual
14
Display Hold
•Press the HOLD button to hold the reading on the meter, press
the button again to return.
Display MAX/MIN
The MAX/MIN mode records the maximum and the minimum
input values. When the inputs go below the recorded minimum
value or above the recorded maximum value, the meter beeps
and records the new value.
To use the MAX/MIN mode, follow the steps below:
1. Press the MAX/MIN button to enter the MAX/MIN mode. The
“MAX” icon appears on the display. The maximum value is
shown on the main display and the current value is shown on
the sub display.
2. Press the MAX/MIN button to select the MAX or MIN mode.
3. Press the MAX/MIN button for 2 seconds to exit this mode.
Note: This function is only for LCR-916.

LCR-914/915/916 User Manual
15
Calibratation
In order to achieve the best measurement results, calibration is
essential. To calibrate the meter, press the CAL button.

LCR-914/915/916 User Manual
16
When “OPEn” appears on the sub display, make the terminal or
the SMD test probe open, and press the CAL button to start the
open calibration. About 30 seconds later, the result of the open
calibration appears on the main display. If the result is “pass”,
press the CAL button to proceed to the next step. If the result is
“fail”, press the CAL button to exit the function.

LCR-914/915/916 User Manual
17
When “Srt” appears on the sub display, short the terminals or the
SMD test probe, and then press the CAL button to start the short
calibration. About 30 seconds later, the result of the short
calibration appears on the main display. If the result is “pass”,
press the CAL button to complete the calibration. If the result is
“fail”, press the CAL button to exit the function.

LCR-914/915/916 User Manual
18
Sorting
To check the accuracy of a part, press the SORTING button to
enter the sorting mode. The sorting result appears on the main
display, and the current value appears on the sub display.