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GTR serial connections

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rv8grover(at)verizon.net
Guest

Posted: Thu Jun 12, 2008 6:22 am Post subject: GTR serial connections

Gentlemen,  

   

I have the three screen Horizon GTR system with the ARINC 429 module on display 1, GPS on display 2, and display three has nothing.  

GNS 430  

SL30  

GTX330  

Sorcerer Autopilot.  

   

 My problem is the Grand Rapids EFIS will not send commands to the Sorcerer. The 430 will drive the autopilot but intermittently loses the GPSS suggesting that the serial connection is OK but there is a problem with the ARINC429. Trutrak documentation stated both Serial and ARINC 429 are needed for GPSS and GPSV.  

   

In the Grand Rapids documentation they say the ARINC 429 can be connected to as many devices as you wish.  A friend suggested that I provide a dedicated ARINC 429 connection between the 430 and the Sorcerer. I think all of the ARINC 429 connections to the 430 have been used.  

   

Does anybody have any suggestions??  GTR has been helpful but they don’t seem to know what is going on here.  

   

Ron Grover  

        [quote][b]

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bcondrey

Joined: 03 Apr 2006
Posts: 580

Posted: Thu Jun 12, 2008 7:08 am Post subject: GTR serial connections

First thing I’d check is to make sure that the GRT ARINC is set to low speed.  If it isn’t you’ll see some very strange behavior on the AP (ask me how I know…).  

   

Bob N442PM  

         

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Ronald Grover

 Sent: Thursday, June 12, 2008 9:20 AM

 To: RV10-List(at)matronics.com

 Subject: GTR serial connections  

  

   

Gentlemen,  

   

I have the three screen Horizon GTR system with the ARINC 429 module on display 1, GPS on display 2, and display three has nothing.  

GNS 430  

SL30  

GTX330  

Sorcerer Autopilot.  

   

 My problem is the Grand Rapids EFIS will not send commands to the Sorcerer. The 430 will drive the autopilot but intermittently loses the GPSS suggesting that the serial connection is OK but there is a problem with the ARINC429. Trutrak documentation stated both Serial and ARINC 429 are needed for GPSS and GPSV.  

   

In the Grand Rapids documentation they say the ARINC 429 can be connected to as many devices as you wish.  A friend suggested that I provide a dedicated ARINC 429 connection between the 430 and the Sorcerer. I think all of the ARINC 429 connections to the 430 have been used.  

   

Does anybody have any suggestions??  GTR has been helpful but they don’t seem to know what is going on here.  

   

Ron Grover   	  Quote: 	
		    http://www.matronics.com/Navigator?RV10-List 	
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      [quote][b]

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wcurtis(at)nerv10.com
Guest

Posted: Fri Jun 13, 2008 3:27 am Post subject: GTR serial connections

First you must understand the the GNS-430 has 2 ARINC INPUT ports but only ONE ARINC OUTPUT port.  Also ARINC is a buss so dedicating it to one output device is kind of limiting.  Ideally the single GNS-430W ARINC OUT should be connected to the EFIS, the TruTrak AND the 330 transponder if you have one.  If you make the GNS-430W ARINC OUTPUT dedicated to the TruTrak, you are then limited to using GPSS L and V ONLY with the 430.  You should still have basic autopilot using the RS-232 from the EFIS to the TruTrak.  For full GPSS from the EFIS, you will need a switch between the GNS-430 ARINC OUT, the EFIS ARINC OUT and the TruTrak ARINC IN.  This should allow you to get the full benefit of the Sorcerer with the EFIS.



William

http://nerv10.com/wcurtis/ 



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