Problem with NI USB-6212(BNC)

[redtree]

I have a product "NI USB-6212(BNC)"  (the SN is: 1AA8051)
When test with the test panel within "NI MAX", the signal read from the analog input is not right.
Without signal input, the signal in the pannel shows "-10.7V"
With signal input, whether it is large or small, the signal in the panel shows " 10.7V".
My operation system is windows professional 7.
The driver version we used is NI-DAQMAX 14.0 F1  (P/N: 781477AD-01; SO: 2257455, date: 2015-07/13)

Right now, the computer also shuts down often.

Can you tell me waht is the problem with the NI USB-6212(BNC)?
It is the driver problem or problem with the NI USB-6212(BNC) itself?

[bahannah]

Redtree,

Just to check my understanding, are you connecting anything into the analog input? We do not spec our device channels if they are unconnected, so any reading you get off an unconnected channel will not mean anything.

What input range are you feeding in? Where are you getting the signal from? If you connect the analog ouput to the analog input and output a known value, can you read in the input?

From a first glance, it sounds like the input voltage that you are feeding in may be too high for the device as it has a limit of 10 V.

Regards,

Hannah L.

Applications Engineering

National Instruments

www.ni.com/support

[mohamed9]

Hi,

I have exactly the same problem, with the same product NI-USB 6212 with S/N : 1A26C69.

I am trying to simply read an analog input through the channels AI (0..15), the weird thing is that the AI (0...7) does not  work and keeps giving me 10.9 V but the AI(8...15) is reading correctly the value of the input voltage. Although I am using the RSE mode (single ended) and supplying the voltage in range of (-10 to 10 V DC). 

I would be grateful to know a solution for this problem.

[grdetil]

It's important that your analog input connections are wired in an appropriate manner for the terminal configuration mode you select in software, whether differential, RSE or NRSE. I strongly recommend reading at least one of the following 3 write-ups on signal connections. If you have a grounding problem, or don't connect the common reference to the proper reference input for a selected SE mode, the AI device won't get a proper reading.

https://www.ni.com/en/shop/data-acquisition/measurement-fundamentals/field-wiring-and-noise-consider...

    Field Wiring and Noise Considerations for Analog Signals

https://www.ni.com/en/shop/data-acquisition/measurement-fundamentals/analog-fundamentals/grounding-c...

    Grounding Considerations - Intermediate Analog Concepts

http://www.ni.com/getting-started/set-up-hardware/data-acquisition/analog-voltage 

    Connecting Analog Voltage Signals to a DAQ Device

    (expand the in-depth description in the Before You Begin section)