getting an error -10401

[telu]

1.iam getting an error -10401 while configuring my
pci 6250+scxi 1102+scxi+1303 using AI config vi using Lab VIEW 7.0 on windows 2000 os in my data acquisition application.i have cofigured above all using MAX.
if i use DAQ assistant iam not getting any error and iam getting good results.but i wanted to use AI config,AI start ,AI read vi's ,iam not able to proceed .what could be the solution for this.
2.can i use scxi1102+scxi 1303 for measuring the strain gauge balance outputs(mv)? for that what precautions to be taken ?because my input signals are floating signals.
is there any loading effect?
what is the max input we can give to SCXI 1102+scxi1303 in Gain=1

[Neil_S.]

inst,

Thanks for posting to the forums.  Let me see if I can answer some of your questions.  First the DAQ Assistant using the DAQmx driver while the AI config, AI start and AI read uses the Traditional NI-DAQ (Legacy) driver.  The PCI-6250 is only supported under the DAQmx driver.  You can find examples of how to use this driver in LabVIEW by going to Help >> Find Examples.  Select the Browse tab and navigate to Hardware Input and Output >> DAQmx >> Analog In.  Feel free to post back to this thread if you have a specific example of how to modify one of the examples.

As to your second question, the SCXI-1102 with SCXI 1303 are not the best module to measure strain gauges.  The SCXI-1303 does not provide any bridge completion which is usually required for strain gauge measurements.  In addition strain gauge measurements require excitation that cannot be provided from the SCXI-1102.  If the excitation and bridge completion circuitry is supplied externally it is possible to use this configuration to measure the strain.

If you are measuring the floating signal differentially, you will want to connect a resistor between the negative terminal and the SCXI ground.  This will assure that the common mode voltage between the signal and the module do not exceed the specifications.  For floating signle ended measurements you will connect the negative terminal directly to SCXI ground.

The maximum input voltage you can measure with the SCXI 1102 and the SCXI 1303 with a gain of 1 is +/-10 V.  This is listed on page A-1 of the SCXI-1102 manual located at:
https://www.ni.com/docs/en-US/bundle/371975d/resource/371975d.pdf

If you have additional questions about the specs of this device let me know.

Regards,

Neil S.
Applications Engineer
National Instruments