Analog Input

[dheeraj2102]

Hi !

I'm acquiring an analog input using an R-series FPGA card in a PXI device.

However, the input is giving junk values. On trying to connect a 12V battery, it shows a value 32767 and remains stationary there. I have changed the integer representation to I64 everywhere, but the problem still persists.

I am assuming we need to calibrate the values obtained into useful data. However, it looks like the input value is reaching a maximum and staying there. Please suggest.

Thank you.

[Matteo_Orciari]

The input range for an R-series FPGA card is -10V,10V.

The input resolution is 16 bit, so with any voltage >=10V you get ((2^16)/2)-1=32767.

You can't measure 12V with that setup.