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View Full Version : Curious GPS Behaviour - Difference between intermediate driver and comm port.


danielvelez
19th December 2008, 07:17 PM
I´m using Garmin XT on my Diamond.

I´ve found a pretty strange behaviour on the sattelite reception dependent on the gps connection that I pre-select.

I explain myself:

I´ve configured the "software port" for gps on settings to work on comm 4.
Now If I use garmin with intermediate driver, I will get poor satt signal and frecuently satt unlocks and relocks, but still get a signal.

Now, if I use the "software comm port", the satt signal improoves noticeably, and I even get one or two extra signals (quite stronger, probably related to WAAS) that are not getting reported by the "intermediate driver".

Somehow the Diamond can handle better the gps if one use it directly through the software comm port, instead of the intermediate driver.

I would believe that this should behave the same but somehow there are some signals that are being ignored if one goes through intermediate driver.

Any thoughs about this?