Why does my DAQ device register a voltage at any input pin that is connected?

[JPISU]

I am using a NI USB 6211 DAQ with LabVIEW.  I am trying to send an output through one of my AO pins, which is connected to one of my AI pins.  I want to then read in the voltage from the AI pin.  However, anytime I have something wired to my AI pin, regardless of whether it is powered, it registers a voltage of 10.91 volts.  Any ideas?

[CCornish]

Do you have the device set up properly?

Have you run self-tests through MAX on the device?

What do you see when you access the test panels through MAX?

[JPISU]

Runnin a panel test in MAX yeilds the same results

[CCornish]

Call NI tech support and determine if the device is damaged; sounds like it may be.

[Freelance_LV]

Hi

what was the result when you ran it for the FIRST time?

Did you try 'Reset Device' in MAX or by the DAQmx Reset Device function?

[JPISU]

Freelance,

I have tried resetting the device.  As soon as I disconnect the wire while running my measurement vi, the voltage at the input pin begins dropping back down to 0V, but instantaneously, when I touch a wire (can be connected to ground, power, or another terminal on the device) the voltage jumps back to 10.91V

[Freelance_LV]

Ok

have you tried changing the input channel that is configured?

Did you try connecting a known power supply to this input channel, to check if the input is read correctly?

say, connect a 5V dc input of a frequency generator output of 1Hz sine wave?

[JPISU]

Yes, I have tried several other channels.  I have tried supplying a known DC level of 5V and have tried just shorting to ground.  Even if I just touch the wire with my finger, the read voltage suddenly jumps to 10.91V.

[crossrulz]

Are the grounds properly tied together?  Meaning AI Sense should be tied to the ground of your signal.

[JPISU]

Crossrulz,

Just to make sure I understand - you are saying tie AI Sense, AI GND, AO GND, DGND and my power supply ground together?

Won't that create a ground loop?