02-04-2009 10:42 AM
Hey Dennis
Is the rest of the code right because I added the VI in but it still doesn't give a good graph. I also have to log the y range if that makes any difference
Thnxs again..you're been really helpful
02-04-2009 11:45 AM
I posted a VI here. http://forums.ni.com/ni/board/message?board.id=170&thread.id=163587 It is crude but i may give you a jump start
02-04-2009 11:59 AM
thanks for replying t06afre but mine is way simplier than this. I have mine posted if you could have a look at it and see what is missing
Thanks in advance
02-04-2009 12:51 PM
02-04-2009 02:36 PM
02-05-2009 05:25 AM
Hi Moe
I have to admit that converting a dynamic data into something useful is not straight forward for a beginner. The Express VI concept is just flimflams glued into labview with cheap glue. It is also poor documented. None of my students are allowed to use Express VIs in their lab reports. I want them to learn Labview. You can not learn labview by tossing in some functionality into a block diagram. Since how to convert dynamic data to waveform data is not documented. I have made a small sample VI showing how to do it. Remember also that my FFT VI need some work to fit your need. You have to connect the delta t control to a terminal on the VI connector block. But it works. I have tested it
02-05-2009 10:35 AM
Thnxs a lot for replying
I'm still having problems. The output that I have is just not the same as the DSA. Where do you connect the dt into? and honestly if you have time if you don't mind explaining wut the dt portion of it does?
Thnxs again
02-05-2009 11:42 AM
02-05-2009 12:27 PM
what kind of scaling factor would you recommend for volts?
thnxs in advance
02-06-2009 03:19 AM
Hi Moe
You will find all information you need here http://zone.ni.com/devzone/cda/tut/p/id/4541 and http://zone.ni.com/devzone/cda/tut/p/id/4541. The dt value is the reciprocal of the sample frequency(1/x) The unit is second, and it will give you the time interval between two samples. Now the rest are up to you. I feel I can not give you more help unless you show me some progress in your learning curve