OPERATION MANUAL OF DIGITAL LC METER
1. General
This meter is a steady performance, battery-driven 3 1/2 digital LC meter, which has the figure
of unit symbol displaying, accuracy reading and wide range measurement. This meter has the
function of measuring inductance, capacitance test. In addition, it’s ideal for testing SMD
type components. Plus, the meter offers advanced features, such as the ability to perform
precision measurements. It is an ideal hand-held tool for labs, factories and radio-technology.
Please read this operation manual carefully before your operation!
2. Characteristic
2-1．General characteristic
Display：LCD display, Max. 1999
Inductance measure： 1uH～20H
Capacitance measure： 1pF～2000uF
Zero adjust：Capacitance under 20nF is manual ministrant zero adjust.
Over range：display“1”
Low battery indication：“
”symbol display
Sampling rate：0-5s
Working temperature：0～40℃
Relative humidity ：less than 80%
Meter size：185mm×93mm×35mm（length×width×height）
Weight：Approx.290g（including 9V battery）
Power：one 9V battery (6F22 or equivalent）
Standard accessories：test leads, operation manual
2-2．Electric characteristic
Accuracy：±(% of reading + number of digit) at 23 ± 5℃, relative humidity<75% . One
year guarantee since production date.
2-2-1．Capacitance
Range
Accuracy
Resolution
2nF
1pF
20nF
10pF
200nF
100pF
2μF
1000pF
20μF
±(2.0%+5)
0.01μF
2000μF
±(5.0%+5)
1μF
2-2-2．Inductance
Range
Accuracy
Resolution
2mH
1uH
20mH
10uH
200mH
100uH
2H
±(2.0%+5)
1mH
20H
±(5.0%+5)
10mH
3、Operation
3-1 Panel description（SEE FIG.1）
1）LCD display：display the measuring value, unit and “
”symbol;
2）Power switch：turn on/off the power;
3）Zero Adjust switch：zero adjust switch before measurement under
range 20nF;
4）Function knob：select range；
5）Input jack：test input COM;
6）Battery case.
3-2 Matters need attention before measurement
z
When
signal displays at the state of power on, should replace the battery to ensure the
accuracy;
z
Do not switch the function knob when measuring.
z
Capacitance measurement function is used to measure the capacitance value, can’t used to
measure the figure of merit of reactive power. It perhaps gets a wrong reading if measure
the capacitance value of resistance; before measuring, it should release the capacitor
completely. Beware of polarity when connects the polar capacitor. Do not connect the test
COM with voltage source; otherwise it will cause grievous damage. Do not connect the test
leads short-circuit, otherwise it will lead to the loss of extra heavy current, and it will
have over range display in all ranges. Please do not measure the capacitance on wire, though
it can measure, it will cause the big error and damage the meter (if the wire is not power
off or there exists the voltage, capacitance or without releasing the capacitance completely).
z
Under range 20nF maybe there is no way to zero adjust when using SMD test clip (the clip’s
capacitance is bigger than 20pF);
z
Inductance measurement function is used to measure the inductor value, can’t used to measure
the figure of merit of reactive power. It perhaps gets a wrong reading if measure the inductance
value of resistance;
z
Please do not measure the inductance on line to avoid damaging the meter.
z
Before measuring, it should release the capacitor completely to avoid damage.
3-3 Capacitance measurement
Set the function knob to a proper capacitance range;
1)
On the range under 20nF, setting the zero adjust switch till the LCD displays “000” ( but
it must insert the test leads or SMD test clip);
2)
Insert the capacitor under tested to the “COM” or clip by test leads, the value will displayed
on LCD, which will read as unit of the selected range directly. If it displays “1”, it means
over range measure. If there is “1” or “00” before the displayed select a lower range
to increase the measurement resolution.
