HT instruments HT327 - Manual (Page 16)

HT327
EN - 15
4.3.8. Frequency measurement
CAUTION
The maximum input for AC voltage is 750Vrms. Do not attempt to measure
higher voltages to avoid electrical shocks or damages to the instrument.
Fig. 9: Using the instrument for Frequency measurement
1. Selecting the position Hz.
2. Insert the test leads into the jacks, the red plug into V
Hz
A jack and black plug
into COM jack
3. Connect the test leads to the circuit under test (see Fig. 9). The frequency value will be
displayed.
4. Pressing the R/SEL key to select the correct range or using the Autorange feature (see
§ 4.2). If the frequency value under test is unknown, select the highest range
5. If the message " O.L " is displayed the maximum readable value is reached.
6. For HOLD function, Minimum and Maximum value measurement and Relative measure
please refer to § 4.2.