[ULx and USB-2533 with LabVIEW] - Reading voltages from board

[jsquared]

I'm currently using a Measurement Computing USB-2533 board (http://www.mccdaq.com/usb-data-acquisition/USB-2533.aspx) to communicate with a ESP 16HD pressure scanner (http://www.meas-spec.com/product/t_product.aspx?id=9311). When the board and scanner are hooked together, I can use a multimeter and see an appropriate voltage difference across the pins (that would be pin 2 Analog CH19 and Analog GND pin 5 on board J5).

But when I use the ULx tutorials and available resources to read data from the board, I specify for it to look at CH19 when creating the task but only insignificant numbers are returned (very small numbers).

One idea that I have is that it may not be referencing the same ground I was contacting with the multimeter leads. Any other insights?

See attached VI

Thanks.

J^2

[QueenSelene]

Hi jsquared,

You will probably get more help/visibility on this post by if you repost it to the Multifunction DAQ board. I wasn't able to open your VI so I'm not sure how you're communicating with the device but in the meantime you may want to look at this KB http://digital.ni.com/public.nsf/allkb/2AAFB18B67617E2A862576C00059BA5B about acessing internal channels, you may be able to use this to reference the same ground pin as you did while taking the measurement.

Thanks,

Selene v.

Applications Engineer

National Instruments