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IM DL850E-01EN
Center Frequency (Center Frequency)
When the filter type is set to Sharp or IIR and the filter band is set to Band-Pass, set the center frequency. The
ranges and resolutions are indicated below.
Filter Type
Range
Resolution
Sharp
0.30 kHz to 300 kHz
Default value: 300 Hz
0.02 kHz (0.30 kHz to 2.98 kHz range)
0.2 kHz (3 kHz to 29.8 kHz range)
2 kHz (30 kHz to 300 kHz range)
IIR
0.06 kHz to 300 kHz
Default value: 300 Hz
0.02 kHz (60 Hz to 1.18 kHz range)
0.2 kHz (1.2 kHz to 11.8 kHz range)
2 kHz (12 kHz to 300 kHz range)
Bandwidth (Pass Band)
When the filter type is set to Sharp or IIR and the filter band is set to Band-Pass, set the bandwidth. The
bandwidth options vary depending on the center frequency that you have set. For details about these options,
see the appendix in the
Real Time Math (/G3 option) User’s Manual
, IM DL850E-51EN.
Tap (Tap)
When the filter type is set to Mean, select the number of taps (number of levels) from the following options. The
larger the number of taps, the sharper the filter characteristics become.
2, 4, 8, 16, 32, 64, 128
Mean Sample Rate (Mean Sample)
When the filter type is set to Mean, select the sample rate from the following options. The specified sample rate
is used to sample waveforms and to filter them.
1 M, 100 k, 10 k, 1 k (unit: S/s)
Interpolation On and Off (Interpolate)
Select whether to perform data interpolation when the filter type is Gauss, Sharp, IIR, or Mean (moving average).
Select whether to perform data interpolation. Up to 10 M samples of data can be interpolated from the data of
waveforms that pass through the digital filter. The interpolation method is
• ON: Data is interpolated.
• OFF: Data is not interpolated.
Delay (Delay)
You can set a delay on waveforms that pass through the digital filter.
The sampling data is decimated in a simple manner to produce the data delay. Consequently, if you set a large
delay, data updating automatically becomes slower. The default value is 0.0 μs.
Range
Resolution
Data Update Frequency
0.0 μs to 100 μs
0.1 μs
10 MHz
101 μs to 1.00 ms
1 μs
1 MHz
1.01 ms to 10.00 ms
0.01 ms
100 kHz
The delay is valid even if you are not using the digital filter. However, if you set a delay, the sampling data
automatically passes through the digital filter circuit. Therefore, the actual delay when you are not using the
digital filter is 1.4 μs (the minimum math delay) + the set delay.
2 Vertical Axis