3.2.6 Frequency and Duty Cycle measurement
Do not measure Frequency on high voltage
(>1000V) to avoid electrical shock hazard and/or
damage to the instrument.
The Meter can measure Frequency or Duty Cycle while
making either an AC Voltage or AC Current measurement.
To measure frequency or Duty Cycle:
1. With the meter in the desired function (AC Voltage or AC
Current), press the Hz % key.
2. Read the frequency of the AC signal on the display.
3. To make a duty cycle measurement, press the Hz % key
again.
4. Read the percent of duty cycle on the display.
5. Set the rotary switch to the Hz range.
6. Insert the black and red test leads into the COM and Hz
input terminals.
7. Connect the test leads tip in parallel with the circuit to be
measured. And don’t touch any electrical conductors.
8. At frequency measuring status, press Hz % one time
then meter enters duty cycle measuring status, press it
again then return to frequency measuring status.
9. Read the result directly from the display.
NOTE:
In noisy environment, it is preferable to use shield cable for
measuring small signal
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