Measuring Duty Cycle
Duty cycle (or duty factor) is the percentage of time a signal is
above or below a trigger level during one cycle (Figure 16).
To measure duty cycle, proceed as follows:
1. Turn on the meter, then set up the meter as shown in Figure 15.
2. Insert the black test lead into the
COM
terminal and the red test
lead into the terminal.
3. Set the Function Rotary Switch to the
Hz
position. Then press
Hz/DUTY
once to select DUTY Cycle measurement (then, a “%”
symbol is indicated on the display).
4. Connect the test leads to the circuit under test. The measured
value is shown on the display.
Figure 15. Duty Cycle Measurement
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