Programming NI5105 According to my requirement

[Chris_D]

Hey Ahsan,

The signal will be cutoff if you input a signal that is outside the range of your vertical range. You want to set a vertical range that is just outside the range of your signal, this way you get the best resolution.

In the images below my input signal is 4V peak to peak. You can see when the vertical range is 4V it looks fine, but when the range is 1V then it is cutoff.






Message Edited by Chris_D on 03-20-2008 04:54 PM

[Shehzad]

Hello,

         Perhaps you did not understudied what i said to you. Dear the problem is that if i set the vertical parameter less than 6Vp-p in my C-programme than that parameter does not seem to be valid and i could not see the signal cutting.

with Regards:

Ahsan Shehzad

[Chris_D]

Hey Ahsan,

I am still misunderstanding your problem. Can you post a screenshot of what you are seeing and also post the part of your C code that you are using to configure the vertical parameters? Maybe this will help better explain what the problem is.

[Shehzad]

Hello,

    I am sending you the file named "MultiRecordFetchMoreThanAvailableMemory.c" in which vertical parameter is configured to 2Vp-p but the cutting is not observed for input greater than 2Vp-p.

With Regards:

Ahsan Shehzad

[Jennifer O]

Hello Ahsan,

I believe you are seeing an expected behavior of the NI-5105 digitizer.  There are set ranges that you can configure for this board.  If you choose a value in-between it will be coerced up to the next valid range.  The valid ranges near the values you have specified are 1 and 6.  So specifying 2 will actually set the digitizer to a range of 6.

You can consult the NI High Speed Digitizers help file or the Specifications document for valid ranges.  For your convenience I have attached them here as well.






Message Edited by Jennifer O on 03-25-2008 04:44 PM

[Shehzad]

Thanks dear,

   You are right, i try it now. Once again thanks.

With Regards:

Ahsan Shehzad