IMC CANSAS - High-Pass Filter

Function Reference 159
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
Data types:
1st Input channel
2nd parameter
Result channel
Integer
Integer (2nd parameteris input channel)
Integer
Integer
Digital (2nd parameteris input channel)
Integer
Digital
Integer 2nd parameteris input channel)
Integer
Digital
Digital (2nd parameteris input channel)
Digital
Integer or Digital
2nd parameteris a number
Integer
4.10.32 High-pass filter
Parameter
Definition
Input channel
Channel to be filtered
Characteristic
Filter characteristic
Butterworth
Bessel
Chebychev, ripple: 0.5 dB
Chebychev, ripple: 1.0 dB
Chebychev, ripple: 3.0 dB
Cut-off frequency
Specified in Hz
Order
Filter order
1
2
3
4
Result
Filtered input channel
Description: Filtering of the input channels with a high-pass filter. The filter coefficients are calculated
from the parameters supplied by the user.
Notes: A condition for effective filtering is that the cut-off frequencies are significantly below half of the
input channel's sampling rate. The closer the cut-off frequencies are to the input channel's sampling rate,
the more imprecise the filter's amplitude response.
The cut-off frequency's input range depends on the input channel's sampling rate, the filter's order and
on the filter characteristic.
Data types:
Input channel
Result channel
Integer or Digital
Integer