[time-nuts] Bad TBolt Crashing LH?

Bob kb8tq kb8tq at n1k.org
Tue Aug 29 12:08:06 EDT 2017


Hi

I would blame the usual “coms error” stuff and dig into that. Bum
cable / loose cable is number one on that list. Connectors (on either
end) coming unsoldered from the pc board would be next ….

Bob

> On Aug 29, 2017, at 10:30 AM, Jerry <jsternmd at att.net> wrote:
> 
> Need some more help figuring out why Lady Heather keeps crashing.  I think
> it may be a flaky Thunderbolt but I only own one.  The PC is an i5 Intel
> with 8Gb memory and nothing running in background.  The log sequence before
> crash is first time stamp erros where the log shows within 1 sec the TBolt
> jumps from 6 or 7 Sats to zero.  Then after a few more timestamp errors, the
> date gets corrupted ending with bad RAM, Bad Osc, etc.  If I open LH again
> (and do nothing to the TBolt) - everything looks good again for about 10-15
> minutes and it all repeats again.
> 
> 
> 
> This log began with:
> 
> 
> 
> #  14:27:28.000 UTC   29 Aug 2017 - interval 1 seconds
> 
> #
> 
> # tow                                    pps(sec)               osc( ppb)
> dac(V)  temp(C)                               sats
> 
> 14:27:28  224866              -8.51365e-008    -0.023564
> 1.196032              42.660358            8 
> 
> 
> 
> [similar as line above.....for about 10-15 mins]
> 
> 
> 
> After skipping some time stamps it becomes:
> 
> 
> 
> #  09:39:47.000 UTC   07 Mar 2019 - interval 1 seconds
> 
> 
> 
> Then it goes back to current UTC sometimes with 7 Sats some errors on 0 or 3
> Sats:
> 
> 
> 
> #! time stamp skipped.  t=229340387000.000  last=181406402001.000
> err:47933984999 ms
> 
> #
> 
> #  09:39:47.000 UTC   07 Mar 2019 - interval 1 seconds
> 
> #
> 
> # tow                                    pps(sec)               osc( ppb)
> dac(V)  temp(C)                               sats
> 
> 09:39:47  225605              -8.1407e-008      0.110356
> 1.196165              42.362377            7 
> 
> #
> 
> #  14:39:50.000 UTC   29 Aug 2017 - interval 1 seconds
> 
> #
> 
> # tow                                    pps(sec)               osc( ppb)
> dac(V)  temp(C)                               sats
> 
> 14:39:50  225608              -8.08732e-008    0.106356
> 1.196165              83.500000            0 
> 
> #! time stamp skipped.  t=181406392001.000  last=181406390000.000  err:2001
> ms
> 
> 
> 
> Then it goes into 'new receiver mode' and then 'new discipline mode' while
> 3-7 Sats are visible.  This goes on for another few minutes until finally it
> shows a series of further corruptions, with minor alarms ending :
> 
> #! year error: 60404
> 
> #! time stamp skipped.  t=1601332636481001.000  last=181406509000.000
> err:1601151229972001 ms
> 
> #
> 
> #  13:14:41.001 GPS   15 Feb 52756 - interval 1 seconds
> 
> #
> 
> # tow                                    pps(sec)               osc( ppb)
> dac(V)  temp(C)                               sats
> 
> 13:14:41  225728              -6.68514e-008    0.141315
> 1.196117              42.588669            5 
> 
> #
> 
> #  14:41:58.001 UTC   29 Aug 2017 - interval 1 seconds
> 
> #
> 
> # tow                                    pps(sec)               osc( ppb)
> dac(V)  temp(C)                               sats
> 
> 14:41:58  225736              -6.60375e-008    0.094983
> 1.185647              42.588669            0 
> 
> #! year error: 1814
> 
> #! time stamp skipped.  t=-6224635078999.000  last=181406518001.000
> err:-6406041597000 ms
> 
> 14:42:01  5898563            -1.49314e+006   -0.000000             1.196108
> 42.278618            0 
> 
> #! new gps status: TRAIM rejected fix: at tow 5898563
> 
> #! new discipline state: ?0B?: at tow 5898563
> 
> #! new minor alarm state 00E7:  OSC age alarm   Antenna open   Survey
> started  No saved posn   LEAP PENDING!    : at tow 5898563
> 
> ...
> 
> ..
> 
> ...
> 
> 14:43:27  225825              -5.45551e-008    0.064319
> 1.196070              40.071625            5 
> 
> #! new critical alarm state AC00:  : at tow 225825
> 
> #! new minor alarm state 0000:  OSC age normal   Antenna OK   Discipline OK
> Normal op mode   Saved posn OK    EEPROM data OK   Almanac OK    : at tow
> 225825
> 
> 14:43:27  225825              -5.44649e-008    0.071280
> 1.196070              44.131538            5 
> 
> #! new critical alarm state B375:    ROM:BAD  Power:BAD  OSC: BAD: at tow
> 225825
> 
> #! year error: 21719
> 
> #! year error: 45931
> 
> #! year error: 45932
> 
> #! year error: 11276
> 
> 
> 
> 
> 
> Thanks in advance for any help
> 
> 
> 
> Jerry NY2KW
> 
> 
> 
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