3 ms·
If it's known to lose a reliable amount of time per month, can't you recalibrate it to make it that much slower?
by canjobear 3y ago
If it's known to lose a reliable amount of time per month, can't you recalibrate it to make it that much slower?
- AlotOfReading 3y agoIt's a pain in the butt. Recalibration means physically trimming the crystal. Which side you trim depends on whether it's too fast or too slow. It's really fiddly though (especially too slow, which requires grinding the ends down instead of the face). Even in the 20s they would have been producing these dozens at a time with a big lapping wheel, so they could just pick a better crystal from the same batch.
- jstanley 3y agoIt would be possible to make the IC adjustable (e.g. a tiny microcontroller) so that it could compensate for the difference without having to modify the crystal.