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Re: OT2 going crazy: confuses GPS with weather sensor?

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  • ki6tsf
    Hi, ... By reset, do you mean power-off/power-on, or CMD RESET over-the-air? ... Yes, the Globalsat GPS is on port B and outputs NMEA. Once the WX problem
    Message 1 of 6 , Nov 25, 2009
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      Hi,

      --- In tracker2@yahoogroups.com, Scott Miller <scott@...> wrote:
      >
      > You have to be connected to port A to run the DUMP command. Sounds like
      > you might have to reset it after all. But it's useful to know what your

      By reset, do you mean power-off/power-on, or CMD RESET over-the-air?

      > setup is. Is there data on port B when you're seeing this problem?

      Yes, the Globalsat GPS is on port B and outputs NMEA. Once the WX problem occurs, it looks like the GPS doesn't output NMEA anymore but SiRF binary.... I have no idea why. It didn't do that before.
      It did it again after some time last night.

      I think the last resort is a factory reset on the GPS and a re-install of the OT2 firmware. Hopefully that will help.

      > Maybe it's a conflict between the NMEA and Garmin inputs.

      The Garmin was disconnect from port A when this occured..

      Bernard KI6TSF

      >
      > Scott
      >
      > ki6tsf wrote:
      > >
      > >
      > > Hi,
      > >
      > > I sent it a CMD DUMP over the air but it did not reply.
      > > CMD VERSION returned Tracker2 Build 54740.
      > >
      > > How should I do the DUMP? Connect the PC serial to the
      > > OT2 GPS port? Port A is in Garmin mode, port B is Auto (for NMEA).
      > > I guess the PC should be connected to B @4800 bauds, right?
      > >
      > > BTW I now get more weird WX packets, with longitude being garbled:
      > >
      > > 2009-11-23 00:27:39 PST:
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.80N/รกรณ_163/65535g63929t-3041P14776h95b31069T2WX
      > > [Invalid uncompressed location]
      > >
      > > Could this be RF leaking into the OT2 (or GPS)? I put small ferrites
      > > bought from you on the end near the GPS, and on the RF coax near the
      > > transmitter.
      > >
      > > Thanks,
      > >
      > > Bernard
      > >
      > > --- In tracker2@yahoogroups.com <mailto:tracker2%40yahoogroups.com>,
      > > Scott Miller <scott@> wrote:
      > > >
      > > > Yikes. If possible, could you do a DUMP command and send me the
      > > > results? Without powering the unit down, of course. I want to see if
      > > > it was a random bit flip or if some buffer overflowed and trashed stuff.
      > > >
      > > > I don't know how it'd keep going like that, though. It's supposed to
      > > > clear the weather flag after transmission and only re-set it if it gets
      > > > valid weather data.
      > > >
      > > > I'll also need to know the firmware build number. I've got to remember
      > > > to start saving the linker map files for old versions to do this sort of
      > > > debugging.
      > > >
      > > > Scott
      > > >
      > > > ki6tsf wrote:
      > > > >
      > > > >
      > > > >
      > > > > Forgot to add the traces. Those WX messages look weird.
      > > > >
      > > > > 2009-11-22 05:57:35 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 06:17:39 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.5V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 06:17:39 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_126/850g65428t-873P48059h26b57238T2WX
      > > > > 2009-11-22 06:27:40 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 06:27:41 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/64153g63849t-376P31093h67b48059T2WX
      > > > > 2009-11-22 06:37:42 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 06:37:43 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_428/246g63849t2167P62832h39b39321T2WX
      > > > > 2009-11-22 06:39:12 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 06:49:13 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 06:49:14 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/64153g1354t600P39321h15b61165T2WX
      > > > > 2009-11-22 06:59:15 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 07:09:16 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 07:19:18 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 07:29:19 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 07:29:19 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/64169g1354t-1919P6508h94b65535T2WX
      > > > > 2009-11-22 07:39:20 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 07:49:22 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/64153g1354t-1871P39321h46b56797T2WX
      > > > > 2009-11-22 07:59:24 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/63850g1354t-2621P13271h50b28398T2WX
      > > > > 2009-11-22 08:09:25 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 08:19:26 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 08:19:27 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/63897g1354t466P6547h95b30582T2WX
      > > > > 2009-11-22 08:29:28 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.3V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 08:29:29 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/63897g1354t1114P39276h95b13105T2WX
      > > > > 2009-11-22 08:39:30 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W>12.4V 14C
      > > > > GPS drift test: elevation mask>20, DOP<8, WAAS=on, SN=on
      > > > > 2009-11-22 08:39:31 PST:
      > > > >
      > > KI6TSF-9>APOT21,WIDE1-1,WIDE2-1,qAR,W6YX-5:!3723.79N/12205.97W_511/63897g1354t2186P35184h15b39321T2WX
      > > > >
      > > > > --- In tracker2@yahoogroups.com <mailto:tracker2%40yahoogroups.com>
      > > <mailto:tracker2%40yahoogroups.com>,
      > > > > "ki6tsf" <ki6tsf@> wrote:
      > > > > >
      > > > > > Hi,
      > > > > >
      > > > > > My OT2 started sending weather reports immediately after each
      > > > > position report.
      > > > > >
      > > > > > There is no NMEA mode in the Config utility, only an AUTO mode for
      > > > > NMEA GPSes so I suppose the OT2 got confused at some point and set
      > > > > itself in weather mode when it got unexpected bits from the GPS.
      > > > > > Or was that excess sunspot activity and a burst of X-ray hit the
      > > > > wrong bit in the OT2.
      > > > > >
      > > > > > The GPS is a Globalsat BR-355 puck with SiRF chipset. A script
      > > > > initializes some settings in binary mode at startup, then reverts
      > > it to
      > > > > NMEA. It's possible the GPS outputs binary during that
      > > initialization phase.
      > > > > >
      > > > > > I'll try a reset, but I am worried this may happen again when I am
      > > > > not there to look after it.
      > > > > >
      > > > > > Bernard KI6TSF
      > > > > >
      > > > >
      > > > >
      > > >
      > >
      > >
      >
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