IMC CANSAS - Page 426

426 Properties of the Modules
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
All other measurement types (voltage, current, bridges and resistance):
Sampling rate
Filter
1 ms
Butterworth, 2nd order, cutoff frequency 220 Hz
2 ms
Butterworth, 2nd order, cutoff frequency 110 Hz
5 ms
Butterworth, 2nd order, cutoff frequency 40 Hz
10 ms
Butterworth, 2nd order, cutoff frequency 20 Hz
20 ms
Butterworth, 2nd order, cutoff frequency 10 Hz
50 ms
Butterworth, 2nd order, cutoff frequency 4 Hz
100 ms
Butterworth, 2nd order, cutoff frequency 2 Hz
200 ms
Butterworth, 2nd order, cutoff frequency 1 Hz
500 ms
Butterworth, 2nd order, cutoff frequency 0.4 Hz
1 s
Butterworth, 2nd order, cutoff frequency 0.2 Hz
2 s to 60 s
Arithmet. mean over the duration of the sampling interval of values sampled at 1 kHz
The filters are optimized to provide good suppression of interference while causing only insubstantial
signal surges in the time domain and only minor delay times. Note that the filters selected are not perfect
anti- aliasing filters (e.g. with damping of 96 dB at one-half of the sampling frequency).
If you use a sampling interval other than 1 ms and the default filter is not suited to your measurement
requirements, simply select 1 ms as the sampling interval and then arrange the appropriate low-pass
filtering or averaging by means of a virtual channel.