Re: Garmin PVT again

From: "Desertphile" <desertphile@xxxxxxxxxxx>
Date: 24 Nov 2006 13:28:35 -0800

Mike Coon wrote:

desertphile@xxxxxxxxxxx wrote:

My question is, do some Garmin models not support PVT? Why would a
device, that has a 3D fix, not send PVT packets when asked to?

My GPS-II+ (original design, version 2 s/w) did not initially but gained PVT
with 2.07 upgrade. Now when asked for its type and version it reports
protocol codes A800 and D800 which are PVT.

Thank you. That makes sense, since the devices listed in Garmin's
tables that don't do the protocol capabillities protocol also do not
list A800 and D800. I suppose software can use the Get_Position and
Get_Time protocols to emulate most of the PVT data, though altitude
would be nice to have.

.

References:
- Garmin PVT again
  - From: desertphile
- Re: Garmin PVT again
  - From: Mike Coon

Prev by Date: Re: Garmin PVT again
Next by Date: Re: Handheld GPS on Commercial Flights?
Previous by thread: Re: Garmin PVT again
Next by thread: Automotive GPS for NON-Techies
Index(es):
- Date
- Thread

Relevant Pages

Re: Garmin PVT again
... Has anyone here experience with the Garmin PVT protocol command? ... Dim Altitude As Single, EPE As Single, HorizontalError As Single ...
(sci.geo.satellite-nav)
Re: Garmin PVT again
... Has anyone here experience with the Garmin PVT protocol command? ... Dim Altitude As Single, EPE As Single, HorizontalError As Single ...
(sci.geo.satellite-nav)
Re: Garmin PVT again
... still leaves plenty of buffer space as far as I can tell ... While getting PVT but I have not yet implemented it. ... The problem I have with my implementation is that if I received what I assumed was a PVT packet and it was really some other packet (waypoint, route etc.) I would have a problem. ... I quick fix for me would have a thread that did nothing but pull packets from the com and USB buffers nad place it into a secondary buffer, the PVT routine would just pull out the PVT packets from this secondary buffer. ...
(sci.geo.satellite-nav)