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Reading multiple analog input channels (RSE/differential) with USB-6251

Hello All,

I have encountered a problem when reading multiple analog input channels with USB-6251 based on the below attached Labview program. I attempt to gather data from three independent measurung devices at the same time, reading two of which in differential and one in RSE mode. If I take data reading from each of the three channels alone, or if I read the both differential channels at the same time and adjust the mode of measurement (RSE/differential), everything works fine. However, if I try to take data from all three channels coincidentially, the signals is altered and looks in all channels akin to the RSE data from the individual measurement. How can I define the appropriate measurement scheme for each created channel individually and does this solve my problem? Do you have any further suggestions how to proceed in such a situation? Thank you very much for any suggestions!

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Hi Zumfsen,

Would it be possible for you to attach the exact VI that you are using? If so I can take a look at exactly what you are doing and we can take it from there.

Thanks,

Ian
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