UNI-T UT81B Dokumentacja Pobierz pdf (Strona 34)

Model UT81B: OPERATING MANUAL

Figure 3-9. Measuring Frequency / Duty Cycle

To avoid harms to you, please do not attempt to

input voltage higher than 42V rms.

Warning

To measure frequency and duty cycle, connect the

Meter as Figure 3-9 and do the following:

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: toggle between frequency and duty cycle

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 54 55

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UNI-T UT81B Dokumentacja Strona 34