2-18
IM 701210-05E
The accuracy improves when
the smoothing filter is used.
Original waveform
When using the smoothing filter
Filter order: 50 ms
• When using the offset function (see this page) and making measurements by expanding near 100 kHz
• Value/div: 200 Hz/div
• Upper display limit: 101 kHz
• Lower display limit: 99 kHz
• Pulse Average
Measures the input pulse by dividing the pulse by the specified number of pulses (1 to
4096 pulses). Below are the characteristics of the pulse average.
• If pulse dropouts are present or pulse interval is fluctuating within one period,
measurements can be made by eliminating the effects from the dropout or
fluctuation (fluctuating component of the waveform used to measure the frequency
or period).
• The measured result is displayed as a value per input pulse even when pulse
average is used. Therefore, there is no need to perform scaling again.
• Can be used when measuring frequency, number of rotations, power supply
frequency, pulse integration, and velocity.
f1
f2
f3
N=11
When pulse average is used
When pulse average is not used
Offset Function
The 701280 (FREQ) allows you to set the center of observation (offset value) and
expand the area around the offset value for close observation. You can measure the
fluctuation around a certain frequency. You can set the offset value up to 1000 times the
Value/div value (up to 200 kHz).
2.2 Setting the Horizontal and Vertical Axes
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