36
Proceed as follows to measure aC voltages (v
):
- Put the DMM into operation as described in the section “Measuring of direct voltage” and select the measuring
range “V “
“AC” appears on the display.
- Now connect the two measuring prods to the object to be measured (generator, switch etc.).
- The measuring value is indicated on the display
- After measuring, remove the measuring leads from the measuring object and turn the DMM off. Turn the rotary
switch to the position “OFF” or turn the device off via the “POWER” switch.
b) Current measuring „a“
Do not exceed the maximum permitted input values. Do not contact circuits or parts of circuits if
there could be voltages higher than 33 v aCrms or 70 v DC present within them. Mortal danger!
the voltage in the measuring circuit may not exceed 250 v.
Measuring operations of >5a may only be performed for at most 10 seconds with a subsequent
measuring pause of 15 minutes.
all current measuring ranges are provided with fuses and thus protected against overload.
Measuring socket selection and assignment of the black and red measuring cable
DMM
black
red
µA,mA
A
VC130-1
COM (5)
mA (7)
A (6)
VC150-1
COM (5)
mA (7)
A (6)
VC170-1
COM (5)
mA (7)
A (6)
Proceed as follows to measure DC voltages:
- Plug the red measuring lead into the 10 A measuring socket (at currents> 200 /> 400 mA depending on the model)
or into the mAµA measuring socket (at currents> 200 /> 400 mA depending on the model). Plug the black measur-
ing lead into the COM socket.
- Select the measuring range Try to start measuring with the largest measuring range if possible, because the fine
fuse will trigger in case of excess current.
- Now connect the two test prods in series with the object to be measured (battery, circuit etc.); the display indicates
the polarity of the measured value together with the currently measured value.
As soon as a minus “-” appears for the direct voltage measuring in front of the measuring value, the meas-
ured voltage is negative (or the measuring tips have been mixed up).
- After measuring, remove the measuring leads from the measuring object and turn the DMM off. Turn the rotary
switch to the position “OFF” or turn the device off via the “POWER” switch.
