Dear Technical Engineer,
Greetings!
Currently, we are conducting a voltage measuring experiment with your DAQ card "NI PCIe-6353". The voltage we are concerning is a slow variable ranging from 0-20mV.
However, we met some problems operating your device.
1.When the input channel is vacant (no connection to any voltage output), the measurement curve displayed in the test panel (built in your driver) keeps drifting (from some point to -10V, then slowly upwards to +10V, then downwards...), but not stays at 0V.
2.The moment we connect the input channel to a DC stabilized power supply (2V), the measurement curve displays a quick step, but not step to 2V. Then, it continues to drift downwards.
3.When we short out the input channel (for example, connect “33 A1” with “32 A1 GND”), the measurement output still keeps drifting, but not displays 0.
Thus, we wonder if some settings should be regulated, or if there is something wrong with our operations, or there is an additional grounding option that we missed, or the device just breaks down. Could you please give us your valuable suggestions?
If you need any more informations, please do not hesitate to contact us (email:dongxianke@gmail.com). Thanks for your time and attention! We are looking forward to your kind reply.
Best,
Xianke
