UNI-T UT81C Operating Manual page 38

1. Insert the red test lead into
black test lead into the COM terminal.
2. Set the rotary switch to
Meter may display a fixed reading which is a internal
distributed capacitor value. For testing less than
40nF capacitor, the tested value must subtract the
internal distributed capacitor value to maintain the
accuracy.
3. To improve the accuracy, press F2 REL with the
test leads open to subtract the residual capacitance
of the Meter and the test leads.
4. It is recommended to use as short as test lead
carrying out measurement to reduce the effect of
internal distributed capacitor.
36
theterminal and the
measurement mode, the
Model UT81C: OPERATING MANUAL
When measuring capacitance, the corresponding
functional buttons:
Capacity REL
F1 F2
F2: relative mode
Note
Capacitors larger than 10 F take longer time.
If the tested capacitor has polarity, connect the red
test lead to positive side and black test lead to
negative side.
When capacitance measurement has been
completed, disconnect the connection between the
testing leads and the circuit under test and remove
the test leads away from the input terminals of the
Meter.