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When I start my LabView VI, sometimes the Ch 101 and 102 noise goes through the roof, and the resistance values begin to climb, sometimes by as much as the equivalent of 25 C temperature change (70 C nominal temp).
As long as I don't monitor the instrument from LabView, the resistances are ok. Once the values go haywire, I have to power off the 2700 for a few minutes and start over before they resolve.
What could be causing this? I'm relatively inexperienced, and have barely been able to figure out the LabView code necessary to get this far. I've attached my VI if it helps.
Any suggestions are greatly appreciated.
- FTIR Monitor.vi
- (89.28 KiB) Downloaded 1246 times
- Keithley Applications
- Posts: 2848
- Joined: June 10th, 2010, 6:22 am
- Country: United States
I see the VI works just fine. How long before the issue shows up.
Maybe there is some issue with the hardware of the 2700 and the card?
I notice the VI will only run one function at a time. Is this what you want?
As far as the VI goes, ideally I would like to be able to log the two resistance channels simultaneously with the output file separated by channel. I have been unable to do that so far, but I think I'm getting close since I discovered the "All Data" switch on the sub-VI within the loop. If you have any suggestions on a better way to do this I would love to hear it!
Thank you for your post and email.
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