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TIS Connect Select

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Tim(at)MyRV10.com
Guest

Posted: Thu Jan 12, 2006 5:21 pm Post subject: TIS Connect Select

From reading the Garmin GTX330 manual inside and out, it looks

as if when I want to display traffic on my Chelton system

that I might have to manually activate TIS by momentarily

taking pin 46 "TIS CONNECT SELECT" to ground.   If I were

displaying traffic on a GNS480, this would be handled

by the GNS480 by that unit signalling the GTX330 to "log in"

to TIS.  I'm assuming that since I'm using a special converter

to interface the GTX330 to my Chelton that this function is

something I have to do manually.



Is there anyone out there who can verify the operation of

that transponder using that signal?



Thanks in advance,

Tim



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mlas(at)cox.net
Guest

Posted: Thu Jan 26, 2006 8:14 am Post subject: TIS Connect Select

I called Garmin and was told to leave the TIS line open.  The Garmin 330

defaults to TIS on at power up and does not need that line to work with

the Chelton.  You can put a momentary switch on that line and use it to

turn TIS on and off.  I assume that you are using the DAC GDC34 ARINC

429 to RS232 converter?  Which other line did you run from your 330?  I

have assumed that you only have to run one 429 channel (1 shielded

twisted pair) from the Garmin 330 to the converter. 



Mike



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Tim(at)MyRV10.com
Guest

Posted: Thu Jan 26, 2006 10:50 am Post subject: TIS Connect Select

Hey Mike, thanks for the reply.  I should have posted a follow-up

that Garmin told me the same thing.  Leave it open and it

defaults to ON.  Yes, I have the GDC34A, I ran these lines:



DAC					Remote

Pin 2	Serial Out (TX)			Chelton J1 pin 5 RX

Pin 3	Serial In (RX)			Chelton J1 pin 47 TX

Pin 11	GND  Serial Ground		Chelton J1 pin 26 GND

DAC					GTX330

Pin 5 RX1-A 429 RX 1A			Pin 37	ARINC 429OUT 1A

Pin 6 RX1-B 429 RX 1B			Pin 34	ARINC 429OUT 1B

Pin 7 TX-A ARINC 429 Transmit A		Pin 32	ARINC 429IN 1A

Pin 8 TX-B ARINC 429 Transmit B		Pin 35	ARINC 429IN 1B

Pin 13 Common  RX Shield



I don't know if there is anything needed coming back from the

Chelton to the GTX330, but I hooked it up just in case. Plus,

when I emailed D2AV my pin connection plan, I got a simple

"Yes" as a reply.  So it wasn't a full "yes, that's what

you need, and you have all of the pins right" but at least

their quick glance and reply gave me some promise.



I should be flying this setup within 1.5-2 months, so if

you aren't that far along, I could updated you then.

Tim

Tim Olson -- RV-10  #40170

DO NOT ARCHIVE

Mike wrote:

[quote] 

 

 I called Garmin and was told to leave the TIS line open.  The Garmin 330

 defaults to TIS on at power up and does not need that line to work with

 the Chelton.  You can put a momentary switch on that line and use it to

 turn TIS on and off.  I assume that you are using the DAC GDC34 ARINC

 429 to RS232 converter?  Which other line did you run from your 330?  I

 have assumed that you only have to run one 429 channel (1 shielded

 twisted pair) from the Garmin 330 to the converter. 

 

 Mike

 

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