[time-nuts] Short-Term Stability

Poul-Henning Kamp phk at phk.freebsd.dk
Fri Mar 17 05:22:56 EST 2006

In message <20060317.005038.52955095.cfmd at bredband.net>, Magnus Danielson write

>> When you truncate or round your "theoretical" bits in order to send
>> them to the DAC, you essentially add a +/- .5 bit random signal
>> which is the the rounding error.
>To clarify a bit if I may... the truncation of phase-state results in a +/-
>1/2 DDS clock cycle time error, this phase-quantization error becomes an
>additional signal to that of the carrier frequency...

I'm not sure it's easier to do the math under that interpretation, but
it is certainly valid.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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