PCWork PCW01A, User Manual

Page: 18 / 139

18
Resistance Measurement
1. Turn the rotary switch to the resistance “
W
” measurement
function. Then select the appropriate range.
2. Insert the red probe in the “ ” socket and insert the black
probe in the “COM” socket.
3. Connect the probes’ tips (red probe is the positive pole, black
probe is the negative pole) to the measuring object, measure
the resistance.
4. The measurement result is displayed on the screen.
5. When measuring large resistors (>1M
W
), it can take a few
seconds for the measurement result to be stabilized. If the
screen shows “OL”, the measurement range has been
exceeded or the measuring circuit is defective.
WARNING:
When measuring resistance on the line, disconnect the
power supply, ensure there is no source of voltage, and
discharge all capacitors. Otherwise, the instrument might get
damaged and might be in danger of an electric shock. When
measuring is finished, always remove the probes from the
measuring object and the device.