Signal Conditioning
scc 68 noises
I am using PCI 6251 and SCC 68 to read analog voltage from accelerometers. Before it was connected only one set, then I tried to connect one more to the same board. It didn’t work so I remounted one set and started again. But then, has appeared some noises. And my question is where could be the problem. I tried to change the signal to RSE, NRSE, but it doesn’t works. I’ve checked the signal from accelerometers and it’ looks ok. The cables are connecting in right way. On the screen I can see that when I am moving the accelerometers the value is changing so there is no problem with connection and mounting. But the data which I am receiving now is disturbed by some noises. Before it didn’t happen. The value which I should receive is 2.4…. Can you please advise me on this issue? It is hardware, or setting problem? Thank you 
