[time-nuts] Z3801A gps week rollover

Tom Van Baak tvb at LeapSecond.com
Thu Sep 8 13:05:58 EDT 2016


IIRC, we've never heard reports of GPSDO pulse or frequency outputs being affected by rollovers. In GPS there are internal rollovers every 1, 256, and 1024 weeks but the 1PPS and 10 MHz outputs are not dependent on any of these events. The same is true for leap seconds; they may be mishandled by some GPS receivers, but they have no effect on 1PPS or 10 MHz outputs.


----- Original Message ----- 
From: "paul swed" <paulswedb at gmail.com>
To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
Sent: Thursday, September 08, 2016 8:16 AM
Subject: Re: [time-nuts] Z3801A gps week rollover

> Mark,
> From some earlier threads on rollovers. Do you even need to set the time at
> all?
> Granted not great if the 3801 is a time source, but if its just frequency
> do you care?
> Thanks
> Paul
> On Tue, Sep 6, 2016 at 11:30 AM, Mark Sims <holrum at hotmail.com> wrote:
>> Happy until the next power glitch...  the setting does not seem to persist
>> between boots.   There may also be other conditions that causes it to
>> forget your date.
>> And when setting the date, you should disconnect the antenna first, then
>> power on.  Once the unit starts tracking satellites you can no longer enter
>> the date.
>> ---------------
>> > I had one that screwed up.  I power cycled and set the date.  It's happy
>> now.
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/
>> mailman/listinfo/time-nuts
>> and follow the instructions there.
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list