[time-nuts] PP2S

Richard H McCorkle mccorkle at ptialaska.net
Sun Sep 16 21:46:11 UTC 2012


Per the 58503B brochure:

"An even-second (1 PP2S) output is available as an option to the 58503B.
The even-second output option provides one pulse every other second,
synchronized to the even seconds in GPS time. This is the reference time
used in CDMA base stations."


> Some GPSDO have both a 1PPS and a PP2S (pulse per 2 second) output. I have two
> questions for one of you telecom experts: 1) What is the history, and the purpose
> of that PP2S signal? 2) What is the official spec for which second the PP2S lands
> on? Is it odd seconds or even seconds? Is it GPS time (easy) or UTC (problematic)?
> If UTC, what happens after a leap second?
>
> Thanks,
> /tvb
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