Problem in labview 7.1 when I opened in labview15

[karicasta]

 I opned the Vi 7.1 in labview 2015 , but when I connect the transducers with acquisition data card  ( nationel instrument) , it apears that my Vi 7.1 show randoms values of the Output and not what I measure buy Multimeter for each transducer.

Can help me please

[altenbach]

Related information (please keep it all in one place)

[JÞB]

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@altenbach wrote:

Related information (please keep it all in one place)

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That's not a conversion problem. You need to make sure that DAQmx is installed and the hardware conf...in a technical forum.

Something feels cyclic about that

[JÞB]

The VI works fine for me on a simulated 6361.  Check your wiring and device

[karicasta]

Thank you

I agree with you Th Vi runs without problem but when I set up my transducer in the good channels I have out put values measured multimeter (+-) different from those appeared in the labview secreen.

Please do you have any suggestions 

The Best regards

[altenbach]

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@karicasta wrote:

I agree with you Th Vi runs without problem but when I set up my transducer in the good channels I have out put values measured multimeter (+-) different from those appeared in the labview secreen.

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Please explain the meaning of "different". (e.g. slightly different, always zero, drifting all over the place, opposite polarity, etc.)

Is the reading more correct if the multimeter is also connected?

Is the reading correct using the MAX test panels?

[JÞB]

what transducer?  make and model please.  What multi-meter?  Set to what range?  What values do you see with the MM and what is the DAQmx Channel reporting?  How is the Channel configured? RSE/Diff/NRSE?  Timing?

[karicasta]

Hi

(For  the out put value are slight different to that one meseared by Multimeter ( Output labview : 3.67 and multimeter show 3.56)

[JÞB]

The slight difference is probably due to the input impedance of the two devices.  The 6361 has an input Z of 10GOhms ch=gnd the average handheld DMM (e.g. the Fluke 80 series) has a 10MOhm input impedance.

[altenbach]

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@karicasta wrote:

Hi

(For  the out put value are slight different to that one meseared by Multimeter ( Output labview : 3.67 and multimeter show 3.56)

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Was it correct in LabVIEW 7.1?

How do you know which reading is correct?

How is the transducer connected? (termination, etc)