refclock 28 gone wacky on me

Hal Murray hmurray at
Fri Jun 10 08:06:43 UTC 2016

esr at said:
>> Mail crossing in the night.  The burst is starting one sentence before the 
>> PPS not starting in the middle and overflowing into the following second.
> That's... very weird.  I've never seen it happen.
> It sounds as though for some crazy reason the GPS is delivering the PPS
> pulse late.  I'm hard put to imagine how gpsmon could screw this up. 

The PPS pulse is right on.  (I had a scope out.)

It's a Venus chip.  There probably aren't many of them in use with gpsd+ntpd.

There is venus634lp in the test collection, but that only tests the parser, 
not timing.  And even if the test package did check timing, the data might 
have come from a time when it was working.

These are my opinions.  I hate spam.

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