IM 701240-01E
5-12
For example, bandwidth limits of 400 Hz, 4 kHz, and 40 kHz are available on the 701251
(HS1M16). The frequency characteristics when the bandwidth is limited are shown
below. When Full is selected, the maximum bandwidth of the input module is used.
3 dB
Approx. 400 Hz Approx. 40 kHz
Approx. 4 kHz
FULL
Bandwidth Limit on the 701262 (UNIVERSAL (AAF)) and 701275 (ACCL/VOLT)
If voltage is being measured on the 701262 (UNIVERSAL (AAF)) or if you set the
bandwidth limit on the 701275 (ACCL/VOLT) to Auto, the anti-aliasing filter and low-pass
filter settings are set to values shown below according to the sample rate.
Sample Rate Anti-Aliasing Filter Low-Pass Filter
200 kS/s or higher 40 kHz OFF
100 kS/s 40 kHz OFF
50 kS/s 20 kHz OFF
20 kS/s 8 kHz OFF
10 kS/s 4 kHz 4 kHz
5 kS/s 2 kHz 4 kH
2 kS/s 800 Hz 4 kHz
1 kS/s 400 Hz 400 Hz
500 S/s 200 Hz 400 Hz
200 S/s 80 Hz 400 Hz
100 S/s 40 Hz 40 Hz
50 S/s 20 Hz 40 Hz
5 S/s to 20 S/s 20 Hz 40 Hz
2 S/s or less 20 Hz 40 Hz
Ext sample 40 kHz OFF
For example, for sample rates between 100 kS/s to 50 kS/s, the cutoff frequency of
the anti-aliasing filter is set to 40% of the sample rate.
5.7 Selecting the Bandwidth Limit
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