VOLTCRAFT VC950 - Frequency and Duty Cycle Measurement

i) Frequency measurement / period duration / scanning rate (Duty Factor)
Do not exceed the maximum permitted input values. Do not touch any circuits or parts of circuits if
they may be subject to voltages higher than 25 V/ACrms or 35 V/DC! Danger to life!
The maximum permissible voltage in the circuit must not exceed 1000V in CAT III or 600 V CAT IV.
The DMM can be used to measure and indicate signal volt-
agerequenciesfrom0.001Hzto4MHz.Theperioddurationand
scanning rate can also be selected. Observe that the maximum
values (also see chapter Technical data) must not be exceeded
while measuring.
Proceed as follows to measure frequencies:
- SwitchontheDMMandselectmeasuringrange“Hz%”with
the rotary control (4).
- PlugtheredmeasuringlineintotheHzmeasuringjack(7)
and the black measuring line into the COM measuring
jack(8).
- Connectthetwomeasuringprodstotheobjecttobemeas-
ured (signal generator, circuit, etc.).
- Thefrequencyandcorrespondingunitaredisplayed.
- Abovethefrequencydisplay,eithertheperioddurationisdis-
playedinmsorthescanningrate(dutyfactor)in%.Select
the corresponding display by pressing the button
.
- Removethemeasuringlinesfromtheobjecttobemeasured
after completion of the measurement and switch off the DMM.
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