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Honored Contributor
Honored ContributorNCO phase drift
Hello, I have an NCO generating a 60 Hz sine output. input clk = 10 khz phase accumulator precision = 32 bits angular resolution = 32 bits magnitude precision = 10 bits phase incr...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- My problem is I get a phase drift over time. I am a new user and would like to understand this better. Any insight would be appreciated. --- Quote End --- Your frequency tuning word is probably being rounded. Read page 32-34 http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-100paper_hawkins.pdf and look at slides 82-86 http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-100slides_hawkins.pdf Cheers, Dave
