At 06:11 19 July 2008, Peter Wyld wrote:
At 21:29 18 July 2008, Doug Hoffman wrote:
Shaun McLaughlin wrote:
I have a problem with my GPSNAV (model 20 I believe, with the
external
antenna). The GPSNAV output to the screen works fine, directs me to
the
waypoints etc. This shows that the GPS engine is working.

However, the output to the PDA via the serial port, and the Datacom
output
to the L-Nav seems to be doing nothing. The cables are definitely OK.

I am unable to find a .cai trace on the logger after a flight, output
to
the PDA is hugely intermittant- it works for a few seconds at most
over
a
whole flight. The L-Nav reads GPS (Wait).

Has anyone else experienced similar problems?

I have has *exactly* the same problem with my LNAV-GPS20 setup. I
finally gave up and bought a Garmin Vista GPS to run my PDA. I would
be

very interested in any solutions to this problem. I know the GPS20 is
internally working fine because on its readout all information is
correct. I just can't get a signal from the GPS20 DB9 output to run
my
PDA.

-Doug


Shouldn't you be looking for the NMEA datastream on the 6way
'telephone' socket, not the DB9 serial port?

If you have the GPS20 connected to the LNAV via this port, you can take
a
tap from it to run the PDA.

Hi Peter- I guess you could split the cable- In my case, I use the Serial
port for the PDA, also for downloading traces via connectMe etc.

JJ- how easy is it to check and re-allign the pins if needed?

It just seems odd that both of the ways to output the NMEA stream have
problems at exactly the same time... But the NavScreen still directs me to
the TP

Cheers,
Shaun