Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Phase Locking an NCO

Hi all, Is there an easy way to phase-lock an NCO megafunction? Here is my problem: Im trying to take the dot-product of a signal with itself, basically, I generate a sine with an NCO at f...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Sorry about that, I have no idea what I was thinking when I typed that.

Basically, im trying to get rid of the delay that I have when Im running my code and transmitting through a small patch cable. I shouldn't have a big delay but I do and I'm not sure how to get rid of it. It throws off all my future calculations.

Additionally, the delay depends on the frequency of my NCO. I assume this is because a 5 clock delay is not much for a low frequency sine wave, but 5 clock cycles end up inducing a rather large phase shift for high-frequency signals.

Matt