We have SCXI 1000 chassis and 1121 card with 1321 terminal block.We are using PCI 6221 card to aquire the data from the chassis .
We are acquring data of pressure transducer, when we acquire data first time we got correct o/p value of transducer e.g. 2.5 V but after that for next 2-3 tests conducted immeadiately output value of transducer is dropped down by 200mV i.e approx upto 2.0 V. This value then continues for all next data acquisition cycles.
If we wait for 45 minutes before conducting the next test , we again get a correct output value.
The pressure transducer requires excitation from the scxi module.
We are using diffrential configuration. Tried using bias resistors of 100k but there is no change .
Please do suggest a solution for the same
