On 23/02/15 21:23, William Unruh wrote:
manual corrections are probably good to 1 sec. to get 1 sec at 2ppm is about 5 days per measurement or 10 days altogether.
It's a long time since I did this, but 200ms is more like it (might have been 100ms). You need digital clock that is, itself, synchronised, and you match the rhythm of the ticks, then let one of them actually move the return key.
You have to really believe in setting accurate time not just be following some instructions, to do this.
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