46
Measuring Frequencies
3.3
Measuring Frequencies
During voltage/current measurement of AC, the frequency can be
checked in the sub display. The frequency display is auto-ranging.
The AC voltage and current ranges can be changed by pressing the
RANGE key.
Frequency
• If signals out of the range of frequency measurement are measured, “
-----
”
appears. Be aware of it.
• In a measurement environment with a large amount of noise, the
frequency may be displayed even with no input. This does not indicate a
malfunction of the instrument.
• The sensitivity of the frequency measurement is regulated by range.
(Minimum sensitivity voltage, Minimum sensitivity current (p. 85))
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,
fi
x the
voltage (current) range and measure again.
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