© PCE Instruments
10
5.5
Frequency and % duty cycle measurements
WARNING
: Observe all safety precautions when working on live circuits.
1. Set the rotary function switch to the Hz % position.
2. To select Frequency or % Duty Cycle, press the MODE
button until the “Hz” or “%” symbol appears on the LCD.
3. Insert the black test lead into the COM input jack and the red
test lead into the V input jack.
4. Touch the test lead probes to the circuit under test.
5. Read the frequency or % duty cycle on the LCD.
5.6
Resistance measurements
WARNING
: Never test resistance on a live circuit.
1. Set the rotary function switch to the Ω
position.
2. Press the MODE button until the “Ω” symbol appears on the
LCD.
3. Insert the black test lead into the COM input jack and the red
test lead into the V input jack.
4. Touch the test lead probes to the component under test. If
the component is installed in a circuit, it is best to disconnect
one side before testing to eliminate interference with other
devices.
5. Read the resistance on the display.
