VOLTCRAFT VC-890 Bedienungsanleitung Seite 59

Proceed as follows to measure alternating current (A
1. Turn on the DMM and select the measuring range "A
2. Press the SHIFT/SETUP button (3) to switch to the AC measuring range. " ", "
appear in the display. Pressing the button again will switch back.
3. After the measurement has been completed, remove the test leads from the object being
measured and turn the DMM off.
Never measure currents over 10 A in the 10 A range or currents over 600 mA in the
mA/μA range, because this will trip the fuses.
d) Frequency measurement / duty cycle in %
The DMM can measure and display signal voltage frequencies from 10 Hz - 60 MHz.
Proceed as follows to measure frequencies:
1. Turn on the DMM and select the measuring range
"mV Hz %". Press the SHIFT/SETUP button (3) until "Hz"
appears in the display.
2. Insert the red test lead in the °CHzVΩ measuring socket (7),
the black test lead in the COM measuring socket (8) (Fig. 4).
3. Connect the two test prods with the object to be measured
(signal generator, circuit, etc.).
4. The frequency will be displayed with the appropriate unit.
5. To measure the duty cycle, press the SHIFT/SETUP button
again until "%" appears in the display.
6. After the measurement has been completed, remove the test
leads from the object being measured and turn the DMM off.
).
", "mA " oder "μA ".
" or " " will
Fig. 4
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