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c) Continuity test
Make sure that all the circuit parts, switches and components and other objec-
ts of measurement are disconnected from the voltage and discharged.
- Turn the DMM on and select measuring range
- The symbol for continuity check now appears in the display.
- Plug the red measuring lead into the Ω measuring socket “+” (9) and
the black measuring lead into the Ω measuring socket.”-” (8).
Connect the measuring prods to the object to be measured.
- A measuring value of less than 30 Ohm is detected and a beep
sounds.
- As soon as “OL” (overload) appears on the display, you have excee-
ded the measuring range or the measuring circuit has been broken.
Perform a counter-pole measuring for control reasons.
- After measuring, remove the measuring leads from the measuring
object and turn the DMM off.
d) Diode test
Make sure that all the circuit parts, switches and components and other objec-
ts of measurement are disconnected from the voltage and discharged.
- Turn the DMM on and select measuring range
- Press the button “ ” (4) to switch the measuring function. The
diode symbol appears on the display. Pressing this button again takes
you to the first measuring function etc.
- Plug the red measuring lead into the Ω measuring socket “+” (9) and
the black measuring lead into the Ω measuring socket.”-” (8).
- Check the measuring leads for continuity by connecting both measu-
ring prods with one another. After that the value must be approx. 0 V.
- Now connect the two measuring prods with the object to be measu-
red (diode).
- The display shows the continuity voltage “UF” in volt (V). If “OL” is
indicated, the diode is measured in reverse direction (UR) or the diode
is defect (interruption). Perform a counter-pole measuring for control
reasons.
- After measuring, remove the measuring leads from the measuring
object and turn the DMM off.
☞
Silicone diodes have an on-state voltage (UF) of approx. 0.4 – 0.9 V.
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