PCI-MIO-16E AI not reading properly

[E_Coleman]

I have been using a PCI-MIO-16E-1 DAQ board for a couple weeks and it has been working fine until yesterday afternoon.  I had just acquired some signals from a pressure transducer and was getting ready to repeat when I noticed that my program was reading +10v on the AI.  I tried AI0 thru AI7 and all were reading a constant +10v.  Does anyone know what could be causing this?  I tried resetting the device, then I tried the self-calibration feature and that one failed.  I was wondering, could an external calibration fix this issue?  if so how can this be done?  I really need this up and running as soon as possible and any productive feedback will be greatly appreciated.

[JÞB]

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E Coleman wrote:
I have been using a PCI-MIO-16E-1 DAQ board for a couple weeks and it has been working fine until yesterday afternoon.  I had just acquired some signals from a pressure transducer and was getting ready to repeat when I noticed that my program was reading +10v on the AI.  I tried AI0 thru AI7 and all were reading a constant +10v.  Does anyone know what could be causing this?  I tried resetting the device, then I tried the self-calibration feature and that one failed.

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E,

I got some bad news for you-  It was working. Now its broke.  It kind of sounds like you ran a bitt too much current through the inputs and fried the device

[E_Coleman]

Exactly the answer I feared.  By the way, could this damage be caused by too much current through the timing i/o?

Thanks Jeff.

P.S.

Any idea where I can find a decent used card?  I'm on a very limited budget and don't want to spend thousands for one of these.

[E_Coleman]

Jeff,

Just one more question.  What is the maximum current allowed on the inputs?

[JÞB]

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E Coleman wrote:

Jeff,

Just one more question.  What is the maximum current allowed on the inputs?

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sorry to leave you hanging, I was PC-less for a couple days, 

http://www.ni.com/pdf/manuals/370725c.pdf pg 1 lists the absolute voltages for each pin.

[aNIta B]

Hi E,

      Jeff posted the same page of the specs I was going to, but to add on to that: It seems odd that you damaged your device measuring a pressure transducer- do you know what voltages/currents could have possibly been sent to your 6070E?  How do you have your transducer connected?  If you ground out your channels, do you still read 10V? If this is a grounding issue, I'd recommend checking out the Field Wiring and Noise Considerations document.  And, finally, have you run the DAQ diagnostic utility on your device, just to double check to make sure something is wrong?

Message Edited by aNIta B on 10-20-2009 03:49 PM