Quadrature Encoder measurements with PXI-6143 S-Series DAQ

[Bentup]

I was using a 12V power supply. I will try your suggestion of adding a resistor to the inputs.

Thanks,

[AnalogKid2DigitalMan]

Very good. Though you are using 12V, still tie the resistors to the 5V pin of the DAQ card so you do not exceed their maximum input voltage specification.

-AK2DM

[Bentup]

I think part of the problem may be with my SCB-68 connector block. When I use a meter (with power supply off) to probe pin37 (PFI8/CTR0 source) and ground I measure 5V, I also measure 5V from P0.6 to ground, therfore the counter is always reading 5V and never see's a change in state. It must be getting the 5V signal directly from the PXI. Is there a setting that can be changed on the SCB-68 block, or would you suspect a short somewhere?