wrote:
> The CMOS clock (is it still called CMOS clock?) drifts about
> 2 secs/day on my machine. Is there any way to replace it
> with a much more precise clock? Are there any expansion
> cards available with high quality clocks to replace
> the default CMOS clock. I do not want the drift to
> exceed 1 second/week.
>
Would something like this work:
http://www.beaglesoft.com/clcahome.htm
It may still not be accurate enough as they claim 15 sec/mon however
they later state that, "in a temperature-stable environment, error will
be less than 2 seconds/month" which exceeds your goal if you can provide
the environment.
You mention you're against Internet syncing, but have you considered
syncing via other remote sources? A couple of methods I've done some
research on in the past were GPS and [long/short] wave radio; I know GPS
is quite popular with astronomers. Whatever the case, keep in mind that
as accuracy rises, so does the price.