I am using an E series DAQ board, BNC-2090 and a linear magnetic encoder. I am trying to count to measure diastance travelled. I am trying out the BNC 2120 Quadrature Encoder.vi just to test this out, and it works. I have channel A connected to PFI8 and Channel B connected to DIO6 for up and down. Here are my questions. This is working, but when I move 1 inch in 1 direction it gives me 220 clk counts. Move the same distance in the opposite direction and it gives me 110. Why could this be? I need to measure distance in both directions. Is there a better way to do this? I also looked up the information on NI.com concerning Quadrature Encoders with E-series DAQ boards. It talks about a vi in there called How to Count. I can't find this vi anywhere. Any idea where I might find this? Thanks for any assistance.
