Mark
I appreciated your help a lot.
Now I am using 3 1141 filters (parallel) with double cable and 1 1531 ICP mux.
All DAQ triggers at same time now.
The problem was that the frequency of the sine was low (like hidro turbo generators), about 1.5 Hz, and the high pass filters of the ICP 1531 (0.2 Hz in order to remove DC of the current source of the ICP accelerometers delay the signal. Above 10 Hz no delay :).
But I am using two 1141 filters with a double cable in parallel mode with a DAQ 6031, and the acquisition board controls only the filter of the first 1141 (channels 0 to 7), and doesn't control the filter of the 1141 (chann 17,18,19,20,21,22,32).
In the configuration I don't get correlate the second 1141 with the 6031 (stay NONE), and the filter (
250 Hz) have no function.
Do you know about this?
Bramatti
