On 2012-01-06, Chris Albertson <[email protected]> wrote:
> I know you are going to ask so here are the config files
>
> MODE 4
> LAT    33 51 54.315
> LONG -118 23 01.782
> HT     25.56 M
> DELAY 50 NS
> ASSERT
> SHMEM /var/log/ntpstats/ONCORE
> POSN3D
> MASK 0
>
Cris:

Re-reading your ntp.oncore configuration file, something jumped out at
me.  Your MODE 4 setting means that your Oncore is performing a site
survey each time time you restart ntp.  From the Oncore driver source
code:

 * Five Choices for MODE
 *    (0) ONCORE is preinitialized, don't do anything to change it.
 *        nb, DON'T set 0D mode, DON'T set Delay, position...
 *    (1) NO RESET, Read Position, delays from data file, lock it in,
 *        go to 0D mode.
 *    (2) NO RESET, Read Delays from data file, do SITE SURVEY to get position,
 *        lock this in, go to 0D mode.
 *    (3) HARD RESET, Read Position, delays from data file, lock it in,
 *        go to 0D mode.
 *    (4) HARD RESET, Read Delays from data file, do SITE SURVEY to get
 *        position, lock this in, go to 0D mode.
 *
 *     NB. If a POSITION is specified in the config file with mode=(2,4)
 *         [SITE SURVEY] then this position is set as the INITIAL position of
 *         the ONCORE.  This can reduce the time to first fix.
 *
 * ----------------------------------------------------------------------------

Perfoming the site survey may affect your offset and jitter numbers.

Tom

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