PCI-MIO-16E-1 shows digital inputs 1-7 as on, without a cable even attached

[Dunkirk]

In MAX, my PCI-MIO-16E-1 shows digital inputs 1-7 as having voltage inputs without a cable even attached to the card. No amount of fooling with it (in MAX) seems to get it to act correctly in either input or output mode. It's true, there ARE voltages on those pins. If I connect my cable (to a TBX-68), I can see that there is 0v on line0 (on port0), 5v on line7, and 2.5v on the rest. Trying to set those lines to something else in MAX seems to do nothing. (I also can't control the AO's, either.)

This card has been working to get a couple of high-speed AI's. Now that I'm branching out, I'm finding strange behavior. Of course, I've tried rebooting, and turning the computer off and back on. MAX's self-test comes back instantly with a "passed" message, which gives me hope, though I don't trust the speed at which it seems to perform the check.

I'm a complete noob at this stuff. Is there anything obvious I might be overlooking? Is there any way I can more-deeply test that the card is working as it should?

[Dennis_Knutson · Accepted solution]

Open connections to TTL inputs are typically detected as logic 1. You are not testing them correctly. Connect an input to either gnd or +5V. Never leave them floating.

[Dunkirk]

Ah! I see. However, while running a "test panel" digital input task from MAX, I've touched the +5 pin from the board itself to line0 on port0, and nothing changes...

[JÞB]

these digital IO pins have an internal week pull-up (100KOhms).  If connected to nothing the input must read High (essentially NOT GND).  this is normal and expected if you read the users manual See pg 4-4

[Dunkirk]

The bigger story is that I fried the card. After fooling with it for a couple of hours, and getting nowhere, I finally pulled it from the computer, and saw that the big NEC chip on it had burned a hole in itself. I guess I backfed some current through it while trying to work out an op-amp circuit? I don't know, and I guess it doesn't matter now.

[QUYEN]

I have this card and I need its driver for Windows 98. Could you please send it to us through mail ?  Thank a lot.

[Sean_N]

Does this computer not have access to the internet? If not, I would need an address to send it to.

Thanks,

Sean

[John_P1]

You may download the driver here:

http://joule.ni.com/nidu/cds/view/p/id/106/lang/en

Best Regards,

[QUYEN]

Dear Sir

Thanks for your information. We already downloaded the required driver (NI-DAQ 7.1) but for some unknown reason we cannot install it. So please send us the required driver to my mail address ntequyen@hcm.vnn.vn or ntequyen2005@yahoo.com.

Thanks for your time and Best Regards

NGUYEN VAN QUYEN   

[Sean_N]

Do you get an error of somekind? If so, what error? It will probably be too big to email.  Can you download it to a flash drive or burn it to a disc from another computer?

Thanks,

Sean