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HT211
EN - 9
5.3. FREQUENCY AND DUTY CYCLE MEASUREMENTS
CAUTION
The maximum input for AC voltage is 600V. Do not attempt to measure
higher voltages to avoid electrical shocks or damages to the instrument.
Fig. 4: Using the instrument for Frequency and Duty Cycle measurements
1. Switch on V
Hz% position
2. Press the MODE key until the symbol “Hz” is shown at display
3. Insert the test leads into the jacks, the red plug into mAµAVHz% jack and
black plug into COM jack
4. Connect the test leads to the circuit under test (see Fig. 4). The frequency value is
displayed
5. If the message "O.L" is displayed the higher range is reached
6. Press the MODE key until the symbol “%” is shown at display to meaning the Duty
Cycle test and connect the meter as frequency measurement. The measured value is
displayed
7. For HOLD function please refer to § 4.2