4-40
IM DL350-01EN
When Measuring Velocity
• Distance/Pulse Setting (Distance/Pulse)
You can set the distance per pulse to a value from −9.9999E+30 to 9.9999E+30.
• Time Unit Setting (Time Unit)
You can set the unit of time to hour, min, or sec.
The output is automatically converted to velocity based on the specified time unit.
• Unit Setting (Unit)
Set the unit of velocity to be displayed using up to four characters. The default setting is m/s.
Filter (Filter) - frequency measurement
• Smoothing (Smoothing)
The frequency module can display waveforms using real-time moving averages of the data. The moving
average order can be set through the specification of a time value from 0.1 ms to 1 s (the maximum number
of averages is 25000). The number of averages performed (moving average order) = the specified time ÷ 40
μs.
The smoothing filter has the following characteristics.
• Smoothes out staircase patterns.
• Enables you to reduce measurement jitter and increase the resolution. Because of the increased
resolution, you can perform high-precision measurements, especially when you measure high frequencies
or use the offset feature and enlarge the waveform.
• Can be used with all frequency-module measurement items.
When using the smoothing
filter Filter order: 400 ms
Original waveform
When using the offset function and making measurements
by expanding near 100 kHz
Value/div:
200 Hz/div
Upper display
limit: 101 kHz
Lower display
limit: 99 kHz
The accuracy
improves when
the smoothing
filter is used.
Original waveform
When using the smoothing filter
Filter order: 50 ms
4 Vertical Axis