Capacitance Measurement; Continuity Measurement; Diode Test - Mastech MS8239C User Manual

Capacitance Measurement:

1 Rotate function selection switch to capacitance
measurement position, and turn off the power to
the circuit to be tested
2
If needed, press "FUNC" key to select capacitance
measurement function
Connect black and red test probe to COM input jack
3
and VΩmA input jack, respectively.
4 Measure the capacitance of circuit to be tested with
other two ends of test probes.
5 Read the capacitance measuring value from LCD
display. If it is overload, "OL" will display on the
LCD display
Here are some tips for measuring capacitance:
• When measuring bulk capacitors with this meter,
readings will stabilize after a few seconds..
• To improve the accuracy below 20nF, subtract the
distributed capacitance of meter and cable.
Warning
When measuring capacitance, to avoid injury or
meter damage, turn off the power to the circuit to
be measured discharge all capacitors
11

Continuity Measurement:

1 Rotate function selection switch to continuity
measurement position, and turn off the power to
the circuit to be tested
2
If needed, press "FUNC" key to select continuity
measurement function
Connect black and red test probe to COM input
3
jack and VΩmA input jack, respectively.
4 Measure the circuit to be tested with other ends
of test probes.
5 If the measured circuit resistance is less than
about 50Ω, the buzzer will sound continuously.
Warning
When measuring resistance or circuit continuity,
to avoid injury or meter damage, turn off the
power to the circuit to be measured and
discharge all capacitors.

Diode Test:

1 Rotate the function selection switch to diode
position, and turn off the power to the circuit to
be tested
2 Connect the black and red test probe to COM input
jack and VΩmA input jack, respectively.
3 Connect black and red test probe to cathode and
anode of the diode to be tested, respectively.
12