Usb 6008 + LM35 temperature sensor problem

[AnalogKid2DigitalMan]

Is your analog input configured of single-ended mode, which is probably preferred over differential in this case.

Also, for kicks, have you tried connecting a ground to pin 1 of the 6008, though I do not think it is required, but still curious as to outcome.

[skogstrand]

Maxpower: Tested the program and got the same result as with the DAQ assistant.

Analogkiddigitalman: I have tested both RSE and differential, and it doesn't make any difference. I have connected pin 1 to ground also, and that didn't make any differense either. It's a stubbern 6008 I have....

[WM_John_Weeks]

I'd say it's looking more and more like you have a bad 6008.

[AnalogKid2DigitalMan]

I concur with John, this is looking like a bad unit.

As a sanity test, you could disconnect all your LM35 connections, and short pins 1 and 2 on the 6008 together. You should read 0 volts. Then connect a battery, a 1.5V AA for example, to pins 1 and 2on the 6008, and you should read ~1.5V.

Other than that, do you have the latest version of DAQ driver software for your device? I doubt this is the issue though.

[skogstrand]

I'm not sure i agree that my device is bad. Thats because when i connect My analog output on 6008 to my analog input on 6008, and make a VI that controls the output and measures the input, I get a change on analog in as I change the analog out.

[skogstrand]

I just conneced a humidity sensor to 6008, and it worked fine. So it must be an issue between the LM35 and usb6008. Thanks for your help so far. Maybe I'll try another temperature sensor. It had been nice to find out what the problem was though.