382 Properties of the Modules
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
Remarks
The filters are designed so that noise is suppressed as much as possible in spite of the multiplexer
on which measurement is based.
If high-performance anti-aliasing is required, then modules such as C8 and UNI8 with their high-
performance analog portions are recommended.
If interference at mains frequency (50 Hz, 60 Hz) in the measurement of thermocouples (or even
the measurement of small voltages in general) is to be suppressed, then a sampling rate must be
selected for every channel for which the noise suppression filter's cutoff frequency is a maximum of
around 20 Hz. E.g. for the SC16 the sampling rate should be 1s or slower!
The multiplexer's highest switching frequency:
max. switching freq. [ Hz]
highest recommended sampling frequency [ Hz]
In the tables above, the Specified sampling interval is stated, which is set in the user's interface. In the
module itself, a slightly different sampling interval is operative due to the multiplexer and its maximum
switching frequency. Nevertheless, you obtain correct data at the desired rate over the CAN-Bus.
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