Dear,
I am trying to rebuild a measurement system using a SCB-68 board linked to the PCI-6023E card. As previous design, it is always working well with five analogue channels which connected with a 2.6k ohm resistor in each channel of the circuit. I attempted to increse the channels into 9 analogue channels which I bought a brand new SCB-68 board and choose 1.8M ohms resistor in each channel of the circuit. But it seems there is always a problem that one channel will influence on the besides channel (as the pic shown). Is that the mistake of the wrong resistors? I have checked all the soldering points. Pls tell me why and how to solve this problem. Cheers.
BR
Jeff
