I have some trouble measuring voltages on my PXI6259.
When I measured
the voltage with a digital multimeter, it shows positive reading. And I read the voltage with the multimeter directly on the pins of my
connector block when it is connected. But measuring
with the PXI 6259 in my VB program using DAQmxReadAnalogF64, the measured voltage dropped down to negative.
Also I used MAX and got the negative reading just as that of VB program.
What
could be the reason? Thanks for your help in advance.