Hi guys,
I'm quite new to LabVIEW, recently i'm setting up a small system to measure the pressure and temperature simultaneously. A PCI-6071E card is used, AI0 and AI1 are connected to pressure transducer and thermocouple output respectively. The actual voltages of the two channels should be 1.67 and 0.23 . When I activate only one input, both signals are accurate. But when I activate the two signals together, the pressure terminal reading is OK as 1.67, but the temperature terminal reading will increase to 0.26(but the actual voltage is still 0.23 as measured by multimeter), when i deactivate the pressure transducer, the temperature voltage will be 0.23 again.
Anyone can tell me why?
Cheers,
Pengcheng