02-18-2019 08:25 PM
I am using the USB-6002 AI of 0-2v signals from pressure sensors. Everything seems to be fine unless i bump the table or the USB cable, or pick up the USB-6002 box. Then the voltage signals spike to ±5 volts or more. I made a little movie at this link until the end of 02/19/19: https://s.amsu.ng/xcSBvHwTD0xN
The photo below is from that video.
I am using Referenced input with common ground and using the +5v out to two sensors, and powering the other two sensors with external +5v.
It seems to me like something is loose inside the 6002 box?
02-19-2019 11:28 AM
I would look for loose wires or wire shorts. I would also look at the cable to the Daq. I would suspect that you have a broken wire or something is shorting.
02-21-2019 07:38 PM
Thanks for the feedback. Last night I unplugged all wires, and just picked up the box touching the connector and got a .5vdc spike in voltage. Then held it down so the USB cable didn't move and tapped lightly on top of the case, then pushed a little on the AI terminal connector and got .3vdc spikes. I am working with one of the tech service engineers now to see if they know what is wrong. I think it needs replacement.