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Extract trigger, or crossing indices from array?

Hi,

 

 

   I have an analog array of TTL voltages, and I'd like to extract the array indices for where a crossing takes place (Lo-Hi) .  Is there a vi that does something like this?

 

Thanks

NI Hardware: PXI-7853R, PCI-5122, PCI-6733, PXI-1036, PCI-MIO-16E-4, PCI-6110
Computer Hardware: Xeon Quad Core - 2.33 Ghz, 8 GB RAM
Software: Labview 2009, Labview FPGA 2009, Vista 64-bit, MAX 4.6, DAQmx 9.0, NI-SCOPE 3.5
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I'm not aware of vi to do this. I think you'll have to write your own.

 

Kevin.

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