33
- 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.
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“
ƽ
Do not exceed the maximum permitted input values. Do not contact circuits or parts
of circuits if there could be voltages higher than 25 V ACrms or 35 V DC present with-
in them. Mortal danger!
The voltage in the measuring circuit may not exceed 250 V.
Measuring operations of >5Amay 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 COM (5) mA(7) A(6)
VC150 COM (5) mA(7) A(6)
VC170 COM (5) mA(7) A(6)
Proceed as follows to measure DC voltages:
- Plug the red measuring lead into the 10 Ameasuring socket (with currents > 400 mA) or into the
mAµAmeasuring socket (with currents <400 mA). Plug the black measuring lead into the COM sock-
et.
- 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 dis-
play 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 measured voltage is negative (or the measuring tips have been mixed up).
