I) Frequency Measurement / Period Duration / Scanning Rate (Duty Factor) - VOLTCRAFT VC950 Operating Instructions Manual

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:
- S witch on the DMM and select measuring range "Hz %" with
the rotary control (4).
- P lug the red measuring line into the Hz measuring jack (7)
and the black measuring line into the COM measuring
jack (8).
- C onnect the two measuring prods to the object to be meas-
ured (signal generator, circuit, etc.).
- T he frequency and corresponding unit are displayed.
- A bove 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
- R emove the measuring lines from the object to be measured
after completion of the measurement and switch off the DMM.
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