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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25858
Location: Livermore CA USA
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 Posted: Fri Jan 02, 2009 10:45 am Post subject: GPS Serial Data to Garmin GTX-327 Transponder |
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Listers,
I've tried sending two different sources of NMEA 0183 data at 4800/9600/19200/38400/57600 baud rates to my Garmin GTX-327 on both serial input ports 1 (db25 Pin 2) and port 2 (db25 pin 19), and configured for "GPS" input. But I don't get anything on the GTX-327 serial input test display. I have been successful at getting AirData Z-format from the GRT EFIS at 9600 baud into either of the GTX-327 serial ports, so the ports are good. The NMEA 0183 data registers correctly on other devices reading it so the GPS serial output seem fine. The GTX-327 just won't seem to see the GPS data for some reason.
Am I doing something wrong? Has anyone else tried this successfully?
Thanks!
Matt Dralle
RV-8 #82880 N998RV
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rv-9a-online(at)telus.net
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| Posted: Fri Jan 02, 2009 5:52 pm Post subject: GPS Serial Data to Garmin GTX-327 Transponder |
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Hi Matt: I talked to Garmin about this a few years ago, and unless you are
using a GNS430 family device or other Garmin IFR certified device, the 327
will ignore the GPS data.
I spent a lot of time trying to get it to work, and no joy.
Best to call Garmin on this.
Vern
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Brantel
Joined: 23 Aug 2008
Posts: 53
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| Posted: Sun Jan 18, 2009 6:30 pm Post subject: Re: GPS Serial Data to Garmin GTX-327 Transponder |
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Matt,
If your goal is to get the 327 to go in and out of standby automatically, you can do this by using a pressure switch on your pitot/static system and connect that to the squat switch input of the 327. Others have done this and report it works great.
You must configure the 327 to use the squat switch..
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mark.steitle(at)austin.ut
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| Posted: Tue Jan 20, 2009 12:10 pm Post subject: GPS Serial Data to Garmin GTX-327 Transponder |
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To get this to work on a GTX-327, does the switch need to be NO or NC? What pressure range would work best? Do you have a suggested source and p/n?
[quote][b]
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Brantel
Joined: 23 Aug 2008
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