SCXI 1303 generic voltage input

[pippo971]

Hallo everybody,

I would like to use a SCXI 1303 module to acquire a signal different than the one from a thermocouple.

My signal is current 4-20 mA; I connected a resistor of 0.47 kohm to have a voltage signal as insput of my module.

I connected the signal to my module and I defined a channel in MAX (analog input 0-10 V). The problem is that the signal I read through the NI device is different from the real one (cross checked with a voltmeter). If for example the real signal is 9.5 V, the acquisition system read 8.1 V...

Any idea? Is it linked with any configuration of the device?

Thank you

[cheggers]

Hey pippo971,

were did you get the 8.1 V? In MAX or in LabVIEW?

You have a SCXI 1303 terminalblock, but on which SCXI-module do you put the terminalblock? Can you give us a overview of the measurement system?

Thanks, 

cheggers

[cheggers]

Maybe this will help you:

http://digital.ni.com/public.nsf/allkb/383706DC2DF46BF386256D2D005812C1?OpenDocument

cheggers