ibaMS8xICP
Manual
Issue 1.7
13
7.2.2
Status of ICP inputs
The LED display is described with a gain of 0 dB by way of an example.
LED per channel Status/meaning
Description for 0dB
(approx. values)
L26 … L33
Off
No signal, signal
too low
± (0 V … 0.16 V)
Green Within measuring
range
± (0.16 V…4 V)
Yellow End of measuring
range
± (4 V …5 V)
Red
Out of measuring
range
> ± 5 V
7.3
Analog inputs X1
Important note
It is typical for an ICP input, that a channel requires a settling time of about 10 to 50 sec-
onds after the gain factor was changed.
This also applies, if the signal was overdriven for a short time.
7.3.1
Input gain
The channel input gain can be adjusted per channel as follows:
0dB
6dB
12dB
20dB
7.3.2
Filter
There are the following filters per channel:
Filter type
Order
Cutoff
frequency
in addition /
permanent
R/C low-pass
1.
40 kHz
permanent
Analog anti-aliasing Butterworth
4.
20 kHz
permanent
Digital anti-aliasing filter*
(Tschebyscheff I)
8.
can be adjusted
(100 Hz …
0.5*sampling rate)
in addition
(sampling rate
> 500 Hz)
* only with ibaPDA
Figure 2: Filter sections