10
Measuring Capacitance
•
To ensure accuracy, the meter will first internally
discharge the capacitor under test. DIS.C will
show on the display. Depending upon the size
of the capacitor and the amount of discharge
required, this process may take some time.
•
To avoid damage to the meter or to the
equipment under test, disconnect circuit power
and discharge all high-voltage capacitors before
measuring capacitance.
•
Use the DC Voltage function to confirm that the
capacitor is discharged.
•
To measure capacitance, proceed as follows:
1. Insert the red test lead into the
terminal and
the black lead into the COM terminal.
2. Set the range selector to
measurement mode, the meter may display a fixed
reading which is a internal distributed capacitor value. For best accuracy when
testing capacitors less than 10nF, the internal distributed capacitor value should be
subtracted from the reading.
Note:
To improve the measurement accuracy of small value capacitors
(less than 10nF), press REL with the test leads open to subtract the residual
capacitance of the meter and leads.
•
It is recommended that the short test clip leads be used for capacitance
measurement.
•
The LCD displays OL indicating the tested capacitor is shorted or it exceeds the
maximum range.
•
Capacitors larger than 400µF take longer time. The analogue bar graph shows the
time left before finishing the measurement.
•
When capacitance measurement has been completed, disconnect the test leads
from the circuit under test and remove test leads from the input terminals of the
meter.
Measuring Frequency / Duty Cycle
To measure frequency and duty cycle, proceed as
follows:
1. Insert the red test lead into the Hz terminal and
the black test lead into the COM terminal.
2. Set the range selector to %Hz or Hz % mV
and press BLUE button to select the Hz
measurement mode for frequency measurement
or % for duty cycle measurement.
3. Connect the test leads across the circuit being
measured.
4. The measured value shows on the primary
display.
•
When frequency measurement has been
completed, disconnect the test leads from the
circuit under test and remove test leads from the input terminals of the meter.
