[time-nuts] Turning off PPS when not enough satellites

[Ulrich Bangert]

Hal,

in general, all receivers that claim to have TRAIM have this feature.
TRAIM stands for "Time- Receiver Autonomous Integrity Monitoring". The
garmin does not have TRAIM because it is no time receiver at all even it
produces a pps. Note that any gps receiver can not be really good for
timing and navigation at the same time, so all navigation receivers make
bad timing receivers. 

Regards
Ulrich Bangert

> -----Ursprüngliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Hal Murray
> Gesendet: Montag, 31. Juli 2006 18:38
> An: time-nuts at febo.com
> Betreff: [time-nuts] Turning off PPS when not enough satellites
> 
> 
> >1PPS -- Lastly, there is one convention I found handy
> >with 1 PPS sources, specifically those GPS boards
> >that are designed to suppress the 1PPS signal when
> >they loose lock.
> 
> Does anybody have a list of which GPS devices do that?
> 
> I have 2 data points:
>   Garmin GPS 18 LVC does not.
>   GPSClock 200 does.
> 
> 
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> 
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