In modes IEPE 0.1Hz and IEPE 1Hz there are the following filters for each channel:
|
Filter type |
Ord. |
Cutoff frequency |
ADC signals |
Filter signals |
|---|---|---|---|---|
|
R/C low-pass |
1st |
50 kHz |
x |
x |
|
R/C high-pass |
1st |
1 Hz or 0.1 Hz (digital); switchable |
x |
x |
|
Digital anti-aliasing filter (FIR) |
84th |
cutoff frequency = 0.45 x ADC sampling rate oversampling = 32 x ADC sampling rate |
x |
x |
|
Digital anti-aliasing filter (Elliptic/Cauer) or Digital anti-aliasing filter (Butterworth) Switchable |
10th 2nd |
0.45 / timebase |
-- |
x |
ADC sampling rate = A/D converter sampling rate Timebase = Configured timebase or update time in ibaPDA
ADC signals = Acquired signals after A/D converter Filter signals = Acquired signals after additional digital filter (see also Filter section)
Filter section:
In modes 24V DC and 24V AC there are the following filters for each channel:
|
Filter type |
Ord. |
Cutoff frequency |
ADC signals 24V DC |
ADC signals 24V AC |
Filter signals |
|---|---|---|---|---|---|
|
R/C low-pass |
1st |
50 kHz |
x |
x |
x |
|
R/C high-pass |
1st |
1 Hz |
-- |
x |
x |
|
Digital anti-aliasing filter (FIR) |
84th |
cutoff frequency = 0.45 x ADC sampling rate; oversampling = 32 x ADC sampling rate |
x |
x |
x |
|
Digital anti-aliasing filter (Elliptic/Cauer) or Digital anti-aliasing filter (Butterworth) Switchable |
10th 2nd |
0.45 / timebase |
-- |
-- |
x |