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F. Measuring Capacitance
Warning!
To ensure accuracy, the Meter inside is discharged against the tested capacitor.
“DIS.C” will be shown on the display when it is under discharging, this
process will be quite slow.
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, set up the Meter as shown in Figure 3-6 and proceed as follows:
1. Insert the red test lead into the
terminal and the black test lead into the
COM
terminal.
2. Set the rotary switch to
measurement mode, the Meter may display a fixed reading which
is a internal distributed capacitor value. For testing less than 10nF capacitor, the tested value must
subtract the internal distributed capacitor value to maintain the accuracy.
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.
3. It is recommended to use test clip to carry out measurement to reduce the effect of internal
distributed capacitor.
Note
- The LCD displays
OL
indicating the tested capacitor is shorted or it exceeds the maximum
range.
- Capacitors larger than 400¦ÌF take longer time. The analogue bar graph shows the time left
before finishing the measurement.
- 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.
Figure 3-6. Capacitance Measurement
G. Measuring Frequency / Duty Cycle
Warning!
To avoid harms to you, please do not attempt to input voltage higher than 30V rms.
To measure frequency and duty cycle, connect the Meter as Figure 3-7 and do the following:
1. Insert the red test lead into the
Hz
terminal and the black test lead into the
COM
terminal.
