[Gta04-owner] GPS fix?

Neil Jerram neil at ossau.homelinux.net
Tue Nov 15 14:46:03 CET 2011


On 15.11.2011 13:40, Dr. H. Nikolaus Schaller wrote:

>
> But the module starts sending NMEA records (with 0 satellites and 
> void
> location data) on /dev/ttyS1 as soon as you give one  impulse on the
> on/off line.

Yes, I'm seeing these.

> Please compare (slightly updated):
>
> 	http://projects.goldelico.com/p/gta04-kernel/page/GPS/
>
> This has been tested by the GTA04-Tester for all units we have
> shipped so far.
> So it is safe to assume that the RX/TX interface is working if there
> is a "ok" record
> in the test protocol.

Agreed.

> What test did not check is if the internal antenna switch and power
> supply is working
> well enough and does not have too much attenuation for good 
> reception.
>
> A common problem of the internal GPS antenna module is that the cable 
> may
> break at the end that is soldered to the module during some 
> disassembly of
> the units.

Thanks.  When I open up again, I'll check for a possible break there 
too.

      Neil



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