[time-nuts] Even pulse per second signals

[Mark Spencer]

Sorry I should have said pulse per even second.   I recall the pulses are aligned with the UTC even second.

--- On Sun, 9/16/12, Mark Spencer <mspencer12345 at yahoo.ca> wrote:

> From: Mark Spencer <mspencer12345 at yahoo.ca>
> Subject: Re: Even pulse per second signals
> To: time-nuts at febo.com
> Received: Sunday, September 16, 2012, 3:07 PM
> While I don't have first hand
> knowledge of CDMA base stations, I recall seeing a
> symmetricom data sheet that stated that even pulse per
> second signals were (or are ?) used for timing in CDMA base
> stations.  Sorry I have no idea why the even pulse per
> second signal is preferable in that applcation. 
> 
> Regards
> Mark Spencer
> 
> > 
> > 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
> > 
> > 
> > ------------------------------
> > 
> > 
>