Today's Message Index:
----------------------
1. 04:35 AM - GPS antennas ()
2. 08:14 AM - Re: TIS Connect Select (Mike)
3. 10:50 AM - Re: TIS Connect Select (Tim Olson)
4. 08:31 PM - Re: GPS antennas (TeamGrumman@aol.com)
Message 1
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Cc: <avionics-list@matronics.com>, <aeroelectric-list@matronics.com>
--> Avionics-List message posted by: <bakerocb@cox.net>
Responding to an AeroElectric-List message previously posted by: "Richard
Sipp" <rsipp@earthlink.net>
1/26/2006
Hello Dick, My Garmin GNS 430 came with an antenna and installation
instructions for the antenna that called for a large metal ground plane
under the antenna. I called the Garmin tech people and protested.
The technician said there was no real need for such a ground plane, but
suggested that if I was going to put the antenna under a fiberglass upper
cowling area near the engine that I mount it on a small metal shelf to help
screen the antenna from electromagnetic junk that might be radiated from
below.
This I did, ensuring that the antenna had a view clear of any metal
obstruction in the entire upper hemisphere. It has worked great.
OC
<<I know many folks have mounted their GPS antennas under fiberglass
components like
cowls. Most have reported no problem with reception.
Has anyone with this configuration had a problem they could identify? Any
reasons
not to go this route? Any other considerations other than insuring
unrestricted
view of the sky and no metallic materials in the fiberglass.? Thanks Dick
Sipp>>
Message 2
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| Subject: | TIS Connect Select |
--> Avionics-List message posted by: "Mike" <mlas@cox.net>
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
-----Original Message-----
From: owner-avionics-list-server@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Tim Olson
Sent: Thursday, January 12, 2006 6:21 PM
Subject: Avionics-List: TIS Connect Select
--> Avionics-List message posted by: Tim Olson <Tim@MyRV10.com>
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
do not archive
--
1/11/2006
--
1/16/2006
Message 3
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| Subject: | Re: TIS Connect Select |
--> Avionics-List message posted by: Tim Olson <Tim@MyRV10.com>
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:
> --> Avionics-List message posted by: "Mike" <mlas@cox.net>
>
> 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
>
> -----Original Message-----
> From: owner-avionics-list-server@matronics.com
> [mailto:owner-avionics-list-server@matronics.com] On Behalf Of Tim Olson
> Sent: Thursday, January 12, 2006 6:21 PM
> To: rv-list@matronics.com; avionics-list@matronics.com
> Subject: Avionics-List: TIS Connect Select
>
> --> Avionics-List message posted by: Tim Olson <Tim@MyRV10.com>
>
> 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
>
> do not archive
>
>
>
>
>
>
>
>
>
>
>
>
Message 4
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| Subject: | Re: GPS antennas |
--> Avionics-List message posted by: TeamGrumman@aol.com
In a message dated 1/26/06 4:36:57 AM, bakerocb@cox.net writes:
> This I did, ensuring that the antenna had a view clear of any metal
> obstruction in the entire upper hemisphere. It has worked great.
>
I put mine on the glare shield, near the windshield. No problems. Short
cord. No holes in the plane. No drag.
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