Re: [Xcsoar-user] LX5000 NMEA Config

[Luke S. <lu...@si...>]

I have come across this
http://www.lxnavigation.de/avionics/download/manuals/LX-NMEAManualGermanVer0000.pdf
document which seems to explain some of the proprietary LX sentences.

Luke

On Thu, Oct 14, 2010 at 11:11 AM, Luke Szczepaniak <lu...@si...> wrote:
> Hi Everyone,
>
> Does anyone have a list of recommended NMEA sentences that should be
> sent to XCSoar from an "intelligent" vario?  The LX series of
> instruments can be customized as to what data is sent out to the
> serial port.  The XCsoar manual recomends GPRMC and GPGGA which is
> what I have currently enabled, would enabling any of the other
> sentences be of benefit to XCSoar?  The available sentences are:
>
> GPGGA
> GPRMC
> GPRMB
> GPGLL
> GPR00
> GPWPL
> GPLX1 (proprietary LX sentence?)
> GPBWC
> LXWP_ (data formatted specifically for Winpilot)
>
> The reason I am asking is that flying in wave the Zig-Zag wind
> calculation was not working as expected.  I've tested with both v5.2.4
> and v6a.  V6a seems better than 5.2.4 unfortunately flying in wave at
> low ground speeds (TAS70kts GS5kts) V6a would show a false landing
> (possible regression to a problem seen in v4.5?).  So I am wondering
> if enabling some of the other NMEA sentences could improve both the
> Zig-Zag calculation and the false landing issue.
>
> Cheers,
> Luke
>