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Is it possible to measure two channels that would be triggered by the rising or falling edges of a 60-2 tooth wheel? I'm using a U3-HV. If so could you explain or point me in the direction needed.
The U3 does not support any hardware based external clocking (the T7 does), so your likely solutions are:
1. Poll the trigger signal and when you see the event you are looking for grab readings from the 2 channels.
2. Stream the trigger signal along with your other 2 channels. Then in post-processing of the data your software finds the trigger events and keeps just that data, discarding all the extra scans.
If you are wanting to do the post-processing in excel or some other data analysis software I'm sure it's possible but I don't know of an available example. I'm not sure if you can just do it with logic formulas in excel, or if you would need to write a VBA macro to do it.
If you are wanting to do the post-processing in some programming language, that is how I would do it myself. In LabVIEW, for example, I would read the file into a 2D array, step through each row of the array in a for loop, do the logic test on the trigger channel to decide if it has changed state since the previous row, and if true keep that row.
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The U3 does not support any hardware based external clocking (the T7 does), so your likely solutions are:
1. Poll the trigger signal and when you see the event you are looking for grab readings from the 2 channels.
2. Stream the trigger signal along with your other 2 channels. Then in post-processing of the data your software finds the trigger events and keeps just that data, discarding all the extra scans.
I was thinking the second option would probably be the one I would use. I could log the results and use that to do different graphs.
Could you give me an example how to do this? I can probably figure out the streaming part but need help in post processing.
If you are wanting to do the post-processing in excel or some other data analysis software I'm sure it's possible but I don't know of an available example. I'm not sure if you can just do it with logic formulas in excel, or if you would need to write a VBA macro to do it.
If you are wanting to do the post-processing in some programming language, that is how I would do it myself. In LabVIEW, for example, I would read the file into a 2D array, step through each row of the array in a for loop, do the logic test on the trigger channel to decide if it has changed state since the previous row, and if true keep that row.