[time-nuts] Ublox Neo-6M time error.

Bob Stewart bob at evoria.net
Wed Jun 1 04:46:46 EDT 2016


Hal, thanks for reminding me of what I ran into on the LEA-6T modules.  When you first power them on, they are often a second off in time.  It's not until the NAV-TIMEUTC->valid field returns a set validUTC flag that the time can be counted on.  But it usually doesn't take more than a minute or two after power-on that the flag gets set and the time jumps to valid time.

Bob

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GFS GPSDO list:
groups.yahoo.com/neo/groups/GFS-GPSDOs/info

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On Wed, 6/1/16, Hal Murray <hmurray at megapathdsl.net> wrote:

 Subject: Re: [time-nuts] Ublox Neo-6M time error.
 To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
 Cc: hmurray at megapathdsl.net
 Date: Wednesday, June 1, 2016, 2:09 AM
 
 
 holrum at hotmail.com
 said:
 > The receiver is reporting the correct UTC offset and
 appears to be working
 > properly... it's just that the time is one second off
 from what 7 other
 > models of receivers are reporting... 
 
 I'm pretty sure that I've seen one GPS unit that was off by
 a second.  I'm 
 pretty sure it didn't get fixed by waiting a while. 
 But I don't remember 
 which type it was so this is just a rumor.
 
 I think I was using NMEA mode rather than a vendor specific
 binary mode.
 
 
 -- 
 These are my opinions.  I hate spam.
 
 
 
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