[time-nuts] Aging 5065A ?

[Mike Feher]

I do not believe that is true. Only a longer D/A would result in a closer approximation to the desired waveform. A longer accumulator will result in being able to use a finer update rate but taking a longer time to do it. I built my first  DDS in 1971 and studied their spurious very thoroughly even coming up with algorithms to predict where they would be depending on clock rate and accumulator setting. Of course that was all discrete and I know technology has passed me by. In the 80's I did use off the shelf DDS chips. The limitation was always in the D/A. 73 - Mike 

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
848-245-9115

-----Original Message-----
From: time-nuts <time-nuts-bounces at lists.febo.com> On Behalf Of Bob kb8tq
Sent: Thursday, October 8, 2020 8:15 AM
To: Discussion of precise time and frequency measurement <time-nuts at lists.febo.com>
Cc: hmurray at megapathdsl.net
Subject: Re: [time-nuts] Aging 5065A ?

Hi

You could also say that with a longer accumulator, you get a closer approximation to a desired waveform. 

e instructions there.