I have NI SCXI-1001 Chassis with NI SCXI-1130 switching slots. What I am going to do is: generating a signal by a RIGOL Function Generator and switch this signal to excite some piezoelectric sensors and reading the response signals by a Tektronix oscilloscope.
The problem is that when I connect both of the function generator and oscilloscope to different rows of the matrix I see the actuating signal in the response channel of oscilloscope, but when I connect one of the function generator or oscilloscope to the matrix and the other one directly to the piezoelectric there is no problem and I have the correct signal. What can be the problem?
I'll be thankful if you could help me