Hioki dt4212 - Measuring Frequencies

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Measuring Frequencies
3.7 Measuring Frequencies
The frequency of the measured signal (square wave) is also
measured. The frequency display is auto-ranging.
Red
Black
2
2
3
3
1
1
When measuring frequencies of AC voltage and AC current
For the AC voltage measurement, use the ACV setting, and for the AC current
measurement, use the ACA, ACmA, or ACA setting. The frequency can
be checked by pressing the Hz/% key ([Hz] lights up). The voltage (current)
range is fi
xed to the range before the Hz/% key is pressed.
• If signals out of the range of frequency measurement are measured, the
display becomes unstable. Be aware of this point.
• The sensitivity of the frequency measurement is regulated by range.
(Minimum sensitivity voltage (p. 58)
When the value is less than the minimum sensitivity voltage (current),
the indicated value may fl uctuate. When the voltage (current) range is
lowered, the value stabilizes. This does not apply to cases where the
value fl uctuates due to noise.
• During the measurement of low frequency voltage (current), if the auto
range does not stabilize and the frequency cannot be measured, change
the voltage (current) range and measure again.