NI USB 6343 analog I/O (Voltage measurement) reflecting on multiple analog I/O

[Thamarai03]

Hi everyone,

I'm using NI USB 6343 DAQ which is I'm using for voltage measurements. I have used analog Input (AI+) signals and GND (RSE) for voltage measurement. For example, If I have connected +5V in AI 0 and GND it is reflecting on multiple analog input channels (AI+) and I need to measure some other voltages but due to this reflection and fluctuation, I can't measure all the voltages properly. What will be reason and how can I solve this? Please provide your suggestions to solve this issue.

[ZYOng]

This is known as ghosting. See How Do I Eliminate Ghosting from My Measurements?

Also, make sure you don't read from an open channel. See Incorrect Readings on Unconnected or Open Channels of DAQ Device