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Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty
From: |
Frank |
Subject: |
Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty |
Date: |
Fri, 22 Apr 2016 08:42:59 -0400 |
> On Apr 22, 2016, at 8:01 AM, Eric S. Raymond <address@hidden> wrote:
>
> I see one for the module in the AdaFruit HAT here:
>
> https://cdn-shop.adafruit.com/datasheets/GlobalTop-FGPMMOPA6H-Datasheet-V0A.pdf
>
> There's a functional description of 1PPS on Page 7, but the description of
> the 1PPS pin on page 13 doesn't give pulse timing. It does claim 10ns
> typical accuracy,
>
Hello Eric,
Earlier this week I privately sent you a PDF reference document for the
AdaFruit Hat/Breakout board GPS chip. It might have the pulse width. IIRC, I
think it was 100ms. For those with more experience, does that sound
reasonable? This link seems to support that:
https://www.febo.com/pipermail/time-nuts/2012-November/072111.html
Thanks
Frank
- [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Eric S. Raymond, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Hal Murray, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Phil Salkie, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Eric S. Raymond, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Hal Murray, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Gary E. Miller, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Phil Salkie, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Gary E. Miller, 2016/04/22
- Re: [gpsd-dev] SemPiTernal - Bounding PPS uncertainty, Paul Fertser, 2016/04/23