UNI-T UT81C Operating Manual page 35

Model UT81C: OPERATING MANUAL
Warning
To avoid harms to you, please do not attempt to
input voltage higher than 42V rms.
To measure frequency and duty cycle, connect the
Meter as Figure 3-9 and do the following:
Figure 3-9. Measuring Frequency / Duty Cycle
1. Insert the red test lead into the Hz terminal and the
black test lead into the COM terminal.
2. Set the rotary switch to Hz.
3. Connect the test leads across with the object being
measured.
4. The measured value shows on the display.
5. Press MODE button to toggle between Multimeter
mode and Scope mode.
6. Press F1 to toggle between frequency and duty cycle
measurement.
When measuring frequency and duty cycle, the
corresponding functional buttons:
Freq/Duty
F1
F1: toggle between frequency and duty cycle
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