Frequency And Duty Cycle Measurement - UNI-T UT208A Operating Manual

UT207A/208A/209A Operating Manual
E. Frequency and Duty Cycle Measurement (see figure 7)
Warning
To avoid harms to you or damages to the Meter from eletric shock, do not
attempt to measure voltages higher than 750V AC or 1000V DC, although
readings may be obtained.
To measure frequency, connect the Meter as follows:
1. Insert the red test lead into the VΩHz terminal and the black test lead into the
COM terminal.
2. Set the rotary switch to %Hz. Frequency measurement mode is a default or
press %Hz button to switch to duty cycle m easurement mode.
3. Connect the test leads across with the object being measured. The measured
value shows on the display.
Note:
When frequency measurement has been completed, disconnect the connection
between the testing leads and the circuit under test, and remove the testing leads
away from the input terminals of the Meter.
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