[time-nuts] Any guesses as to how Citizen is claiming ±1 second/year with using this AT-cut 8.4MHz XTAL?
hmurray at megapathdsl.net
Wed Apr 11 18:41:57 EDT 2018
kb8tq at n1k.org said:
> Before you say it canât be done, the whole âaverage outâ thing is how time
> pieces have been done for hundreds of years. The device may swing this way
> and that â¦. done properly it eventually averages out. How well it works for
> you â¦ that depends.
There is a wonderful message in the archives someplace that describes how to
adjust a watch. The recipe is roughly:
Adjust watch to run correctly in the shop.
Give it to customer. Tell him to come back after a week of normal use.
Adjust watch to compensate for that offset.
That probably doesn't work very well if your watch spends the night on the
stand and your room temperature changes a lot from summer to winter.
These are my opinions. I hate spam.
More information about the time-nuts