Frequency And Duty Cycle Measurement - HT ECLIPSE HT9025 User Manual

5.4.

FREQUENCY AND DUTY CYCLE MEASUREMENT

The maximum input AC voltage is 1000V. Do not measure voltages
exceeding the limits given in this manual. Exceeding voltage limits could
result in electrical shocks to the user and damage to the instrument.
Fig. 26: Use of the instrument for frequency measurement and duty cycle test.
1. Select position Hz%.
2. Press key MODE/VFD to select measurements
values of frequency and duty cycle (symbol
3. Insert the red cable into input terminal VHz% CAP
input terminal COM.
4. Position the red lead and the black lead respectively in the spots of the circuit to be
measured (see Fig. 26). The value of frequency (Hz) or of duty cycle (%) is shown on
the display. The bargraph is not active in these functions.
5. To use the HOLD and RANGE functions, see § 4.2
6. To use the internal functions, see § 4.3
7. To save the measured result, see § 4.3.4
CAUTION
Hz or
" "
on the display) of input signal.
" "
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ECLIPSE - HT9025
% in order to display the
" "
and the black cable into