max/min indicators

[VSECorp]

I would like to attach the file I refer to below, but I don't see an option to do that on the developer exchange. If you think you might be able to help, or if you want to take a look at the example to fully understand the problem I am having, please send me your email address and I will send the file over to you right away! I realize this has to be seen in my code to understand what is going on, so please email me so I can send over the file. Thanks in advance for the prompt responses.




The file generates a white noise waveform to simulate a signal that I would be sampling. I wrote the code to find out the MAX and MIN y-values of the signal for the 40 seconds that the while loop runs. The while loop runs for 40 seconds, then a dialog box pops up, runs for another 40 seconds, and so on. For some unknown reason, for the first 40 seconds that the while loop is running, it displays the MIN of the signal to be 0.00? Then in the next 40 second period, it gives an accurate MIN value. You can see it is working for the MAX value at all times. I am not sure why this is happening. If you could, take a look at the code and let me know if you see anything that would make the MIN function not work on the initial 40 second period of data.

Also, the test that I am running is divided up into those 40 second periods. The MAX and MIN are generated for each of the 40 second periods. The way I have my while loop and dialog box structure set up, a dialog box is triggered to pop up when the timer in the while loop reaches 40 seconds. I need to be able to grab the MAX and MIN values for each individual 40 second period and store them on a on screen display. For example, the first 40 second period will generate a MAX value and a MIN value. I want those values to be displayed on an on screen indicator. Then the next 40 second while loop runs and generates different MAX and MIN values. I then want those new values to be displayed on different indicators on screen. So there will be multiple indicators on screen displaying the MAX and MIN values for each 40 second interval. I have placed the indicators on the front panel, unwired at present time. I am having trouble trying to figure out how to differentiate between the 40 second while loops using the set up I have now.

Finally, ideally I would like the amount of time each while loop is running to alternate between 40 seconds and 10 seconds (i.e. the first loop runs for 40 seconds, the next runs for 10 seconds, the one after that runs for 40 seconds, and so on). How can I accomplish this using the timing setup I have now?

Thanks for the help.
Dan

[Brian_Vibert]

Hmmm... probably would be easier if we could see your code. The problem doesn't sound like it would be too hard to fix though..

Brian
bvibert(@)bristolbabcock(.)com
remove ()

[markwysong]

Dan,

Send me this VI please, and I'd be glad to help!

Mark
mark.wysong@ae.ge.com

[Mike Manzheliy]

Hi Dan,
see attached file
Mike

VSECorp wrote:

> I would like to attach the file I refer to below, but I don't see an
> option to do that on the developer exchange. If you think you might
> be able to help, or if you want to take a look at the example to fully
> understand the problem I am having, please send me your email address
> and I will send the file over to you right away! I realize this has
> to be seen in my code to understand what is going on, so please email
> me so I can send over the file. Thanks in advance for the prompt
> responses.
>
> The file generates a white noise waveform to simulate a signal that I
> would be sampling. I wrote the code to find out the MAX and MIN
> y-values of the signal for the 40 seconds that the while loop runs.
> The while loop runs for 40 seconds, then a dialog box pops up, runs
> for another 40 seconds, and so on. For some unknown reason, for the
> first 40 seconds that the while loop is running, it displays the MIN
> of the signal to be 0.00? Then in the next 40 second period, it gives
> an accurate MIN value. You can see it is working for the MAX value at
> all times. I am not sure why this is happening. If you could, take a
> look at the code and let me know if you see anything that would make
> the MIN function not work on the initial 40 second period of data.
>
> Also, the test that I am running is divided up into those 40 second
> periods. The MAX and MIN are generated for each of the 40 second
> periods. The way I have my while loop and dialog box structure set
> up, a dialog box is triggered to pop up when the timer in the while
> loop reaches 40 seconds. I need to be able to grab the MAX and MIN
> values for each individual 40 second period and store them on a on
> screen display. For example, the first 40 second period will generate
> a MAX value and a MIN value. I want those values to be displayed on
> an on screen indicator. Then the next 40 second while loop runs and
> generates different MAX and MIN values. I then want those new values
> to be displayed on different indicators on screen. So there will be
> multiple indicators on screen displaying the MAX and MIN values for
> each 40 second interval. I have placed the indicators on the front
> panel, unwired at present time. I am having trouble trying to figure
> out how to differentiate between the 40 second while loops using the
> set up I have now.
>
> Finally, ideally I would like the amount of time each while loop is
> running to alternate between 40 seconds and 10 seconds (i.e. the first
> loop runs for 40 seconds, the next runs for 10 seconds, the one after
> that runs for 40 seconds, and so on). How can I accomplish this using
> the timing setup I have now?
>
> Thanks for the help.
> Dan