How to caculate the duty,fall time and rise time of signal

I am currently using Lv6.1, and have one NI GPIB-ENET/100 Controller, throught the oscillograph I want to caculate the duty of input signal, and it's fall time and rise time also, but, try it long time, I still no know how to do it, could you give me some tips? Examples is preferable.
Thanks.

Programming these oscilloscopes is very easy using gpib commands I use the tds5104 daily and have written many programs for it. the driver vi's are very easy to use. I personally would just let the scope do it.
Here is an example vi converted to 6.1
and for 7.0
Message Edited by jhoskins on 08-19-2005 08:08 PM
Joe.
"NOTHING IS EVER EASY"
Attachments:
simple_example_for_5104b.vi ‏38 KB
simple_example_for_5104b.vi ‏43 KB

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