© PCE Instruments
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5.5
Voltage measurement AC / DC
Do not make a voltage measurement while a motor is being switched on or off in
the circuit. This can cause voltage peaks and damage the meter.
•
Slide the cover of the input sockets upwards.
•
Set the rotary switch to position V.
•
Use the MODE key to select between AC and DC.
•
Plug the test leads into the measuring input sockets (black to COM and
red to V).
•
Touch the measuring spots with the measuring tips.
•
Read the measured value in the display.
5.6
Resistance measurement, continuity and diode test
Disconnect the circuits / components to be measured from the power supply.
5.6.1
Resistance
•
Slide the cover of the input sockets upwards.
•
Set the rotary switch to position
Ω.
•
Plug the test leads into the measuring input sockets (black to COM and
red to
Ω).
•
Touch the measuring spots with the measuring tips.
•
Read the measured value in the display.
5.6.2
Continuity test
•
Slide the cover of the input sockets upwards.
•
Set the rotary switch to position
Ω.
•
Press the MODE key repeatedly until the continuity test icon
appears on the
display.
•
Plug the test leads into the measuring input sockets (black to COM and red to
Ω).
•
Touch the measuring points with the measuring tips.
•
An acoustic signal sounds if the resistance is <50
Ω.
5.6.3
Diode test
•
Slide the cover of the input sockets upwards.
•
Set the rotary switch to position
Ω.
•
Press the MODE key repeatedly until the diode test icon
appears on the display.
•
Plug the test leads into the measuring input sockets (black to COM and red to
Ω).
•
Touch the measuring spots with the measuring tips and write down the measured value.
•
Swap the polarity.
•
Now compare this reading to the first reading.
Evaluate the measurement as follows: If "OL" is displayed in both measurements, the diode is
defective. If "OL" is displayed in one measurement and typical values of e. g. 0.400 V ... 1.800 V
are displayed in the second measurement, the diode is working. If voltage values are displayed
in both measurements, the diode is defective. In this case, the diode generates a short circuit.
