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  1. #71
    Member GaryK30's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    I wonder if the watch has not applied the leap seconds to the GPS sync for some reason. There is some information in the manual about this (below). The last two leap seconds occurred on 31 Dec 2016 and 30 Jun 2015.

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  2. #72
    Member Time4Playnow's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Quote Originally Posted by GaryK30 View Post
    I wonder if the watch has not applied the leap seconds to the GPS sync for some reason. There is some information in the manual about this (below). The last two leap seconds occurred on 31 Dec 2016 and 30 Jun 2015.

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    Gary - that's possible.... And easy for fcasoli to find out. All he has to do is a manual GPS time sync (just "T" - "T&P" is not necessary). If it takes longer than a minute for the sync to complete, then the watch is gathering leap second info and that could take up to 12-13 minutes as it says in the manual. That could be the answer.
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  3. #73
    Member fcasoli's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Today all time, not misalignment, this evening, perfect time with Protrek

    The best Casio G-Shock is the next one...

  4. #74
    Member Time4Playnow's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Quote Originally Posted by fcasoli View Post
    Today all time, not misalignment, this evening, perfect time with Protrek
    What fixed it? Was the second hand 2 seconds off because the watch had not received the leap second information??

  5. #75
    Member GaryK30's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Quote Originally Posted by Time4Playnow View Post
    What fixed it? Was the second hand 2 seconds off because the watch had not received the leap second information??
    Perhaps it received a radio sync last night, so it didn't attempt a GPS sync during the day. I wouldn't be convinced that it's okay until it receives a successful GPS sync during the day, to ensure that it has the leap second info.
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  6. #76
    Member Time4Playnow's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Quote Originally Posted by GaryK30 View Post
    Perhaps it received a radio sync last night, so it didn't attempt a GPS sync during the day. I wouldn't be convinced that it's okay until it receives a successful GPS sync during the day, to ensure that it has the leap second info.
    Exactly - the watch will not update leap second information until it does a GPS time sync...
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  7. #77
    Member fcasoli's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Quote Originally Posted by GaryK30 View Post
    Perhaps it received a radio sync last night, so it didn't attempt a GPS sync during the day. I wouldn't be convinced that it's okay until it receives a successful GPS sync during the day, to ensure that it has the leap second info.
    Every morning I found the perfect alignment, so every night both received the sync radio signal. No idea about the reason today there is not misalignment.
    The best Casio G-Shock is the next one...

  8. #78
    Member ocddave's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    If you check the receiving mode by using the right bottom button, it should tell you "yes" for success, then show the city code, then the position. That would confirm if the GPS synced, if it just shows "yes" and goes straight to time keeping, then it didn't sync via GPS.
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  9. #79
    Member fcasoli's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Today misalignment in the afternoon, two seconds, checking GPS sync status, result is NO

    The best Casio G-Shock is the next one...

  10. #80
    Member GaryK30's Avatar
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    Re: GPW-1000 GravityMaster buy or not buy?

    Quote Originally Posted by fcasoli View Post
    Today misalignment in the afternoon, two seconds, checking GPS sync status, result is NO

    I believe this means it didn't do the full 12-13 minute GPS sync update that also includes adjusting for leap seconds.

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