FPGA

[snostro]

Hello,

I'm tring to program a PXI-7841R. It is mounted on a PXIe-1085 and is connected to a SCB-68A.

I'm trying to read the analog output channels with my multimeter but i'm always reading 0 even though the channels seems to be "activated". Their impedance is low.

The DO are working fine, thus I think i'm missing something trivial but I can't figure out what. I'm new with labview. I'll attach a printscreen of my test program.

Thank you for your help.

[crossrulz · Accepted solution]

You are only telling the bit value for the analog output.  Since the analog outputs are -10V to +10V, you have a 20V range over 16 bits.  Therefore a single bit is 20/(2^16)=~300uV.  Most DMMs will not see that unless you have a low range.  So if you want 3V, you need to write 3*(2^16)/20=9830