Hi,
I posted previously about setting up a SCXI 1120D module in DAQmx (http://forums.ni.com/t5/LabVIEW/SCXI-1120D-setup-using-DAQ-assistant/m-p/2412476#M745405) and I have recently come back onto this project. I am now trying to complete the process of converting existing Traditional DAQ code into DAQmx code.
I can now read the signal from the SCXI 1120D using Traditional DAQ and DAQmx, but they are not reading the same value. I'm pretty sure I have the setup the same for both acquisition types, see details below, the only parameter I'm unsure of is whether setting the Accessory Config. Attenuation to 100 is the same as setting the Terminal Block Gain to 0.01?
SCXI 1120D Module with SCXI 1327 terminal block
Traditional system setup
Gain = 0.5
Filter 4500Hz
Terminal Block Gain = 0.01
Reading = 20.6v
DAQmx system setup
Gain = 0.5
Filter = 4500Hz
Accessory Config.
Attenuation = 100
Reading = 9.99v
If I set the Accessory Config. Attenuation to 1, I get a reading of 0.205v, approximately 100 times less than the Traditional DAQ reading.
Can anyone suggest anything to try?
Cheers
Chris