Measuring delay between two signals in which on them is a inverted signal

[rakesh0904]

Hello,

Im working on a experiment where i need to calculate the delay between two signals in which one of them is a sine wave burst and the other one is inverted square wave pulse. I built a Block Diagram code using basic level trigger detection.im not getting right delay..i could figure out the problem..that is there are many peaks in the burst and the other signal is only a one peak signal.

Im posting the image of the signals..and the block diagram code.

Any help to this problem is greatly appreciated..

Thank you

[Bakk_Diagram]

Hi,  what you are doing seems pretty reasonable.  Are you having problems with its reliablity?

[rakesh0904]

yes im unable to get the correct delay..the delay keeps changing

i think the problem is because the first wave is a burst of sine wave and the second one is an inverted square wave pulse.. what do you is think is the possible way to calculate the delay for these kind of signals..

thanks in advance..

[johnsold]

How are you detecting the onset of the sine wave burst?  Does the burst always start with the sine at the same phase or does it vary?  From the image of the graph you posted, it is impossible to tell.  What is the frequency of the sine wave?

Lynn