[time-nuts] TBolt: UTC PPS
Hal Murray
hmurray at megapathdsl.net
Mon Mar 29 19:09:44 UTC 2010
> When there's a leap second, what do you want to do?
> Ignore it = GPS time
> put in an extra pulse = UTC time
Nice try, but that's not how it's done. They put in an extra second in the
last minute of the day.
23:59:59
23:59:60
00:00:00
Humm. Isn't that backwards. Don't you want to remove a pulse? Inserting a
leap-second is equivalent to stopping the clock for a tick.
I suppose you could setup a microprocessor that listened to the text and mask
out a pulse at the right time.
That would delay the PPS pulse by the prop time through an AND gate so we
could come up with time-nut level schemes to fix that.
Or you could just wait for the next leap second and stick your finger in the
works at the right time.
--
These are my opinions, not necessarily my employer's. I hate spam.
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