How do I connect a Garmin 155XL to a D100?

trib

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Can you instruct me on what to connect to allow the Garmin 155xl to provide input to a D100 in order to use the HSI display on the D100 for the Garmin?  I do not have an HS34, only the D100 and autopilot servos.  I'm thinking I use Pin 24, which is the channel 1 RS232 output.  Other options are; Pin 19 channel 2 RS232 output, Pins 15 and 16 ARINC 429 output A & B.
 

jakej

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Trib

See page 3-5 of the latest version of the install manual, you did read it ? & look here. http://wiki.dynonavionics.com/GPS_Serial_Compatibility_and_Configuration_Settings. - should be same as for 300xl as the 155xl is same gps without the radio.

Jake J
 

trib

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Jake,

I did read both of the instructions you referenced. I happen to be a mechanical engineer, and am much less comfortable with electronics. What I was hoping to confirm, after having looked at the two documents, was that I should connect the Channel 1 RS232 output from the Garmin 155Xl to pin 22 of DB25 connector on the Dynon harness. Am I close on this one?
 

Dynon

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Pin 22 is definitely right on the D100 end, and I THINK that Channel 1 should be OK on the Garmin side when it's set to aviation format.
 

jakej

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Trib
As Dynon says re connection to the Dynon, and for more info, you should use pin 24 on the Garmin ( ie Chnl 1 output Aviation) ;)

Jake J
 

trib

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Thanks Jake and Dynon :)

Now that I've brought my brand new used 155XL home from my local avionics installer, who gave me a great deal, I have one more question. The 155XL also has an RS232 IN connection, which would allow using the dynon to provide altitude data to the GPS as a backup signal. Should the signal from the dynon be from pin 10 (RS-232 transmit) or pin 13 (Serial encoder transmit, RS-232). Does it even matter which?
 

jakej

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Thanks Jake and Dynon  :)

Now that I've brought my brand new used 155XL home from my local avionics installer, who gave me a great deal, I have one more question.  The 155XL also has an RS232 IN connection, which would allow using the dynon to provide altitude data to the GPS as a backup signal.  Should the signal from the dynon be from pin 10 (RS-232 transmit) or pin 13 (Serial encoder transmit, RS-232).  Does it even matter which?

Use Dynon pin 13 to Garmin 155xl P1 pin 17 - in the Dynon menu selection go to MORE > SETUP > MORE > ALTENC & select Format 4, don't forget to enable the RS232 port on the !%% as well ;)

HTH

Jake J
 

trib

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thanks again Jake.  The reason I asked if it mattered which is that the female D9 connector used to load updates to the Dynon has Pin 22 and Pin 10 connected to it.  If I could use the Dynon serial out (pin 10) to supply the altitude, then I can simply make a male D9 connector with Pins 17 and 24 from the Garmin and plug it into the Dynon D9 connector.  When time comes to update the Dynon, just unplug and update.  Will the data from the Dynon pin 10 not contain the altitude to be read by the Garmin, or can that not be discerned?
 

jakej

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Trib
What I'd do is wire up the Dynon 9dsub connector as per normal however wire from pin 13 (alt out) to another pin on the female 9dsub too & then have a male connector on the Garmin side with serial ground to pin 5, GPS serial out to pin 2, alt in to GPS to whatever the wire from pin 13 (D100) you decided to use on the 9 pin dsub - don't use pin 3 though.
The serial to USB cable, used for Dynon updates will only 'see' pins 2,3 & 5 so the extra wire won't matter.

HTH

Jake J
 

trib

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Jake,

That's the perfect solution. I had actually thought about that, but was unsure if the Dynon would have issues with the extra signal on the D9 connector when downloading. I guess this makes sense though, since it is an output. I'll wire it up this way and let you know how successful it turned out.

thanks again.
Tim
 

trib

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Just getting back with results. Flew a 200nm cross country with the Garmin wired as above to the D100 and everything performed flawlessly :) I'm making an annunciator panel now to complete the installation (6 diodes and two switches). This will add some flexibility to my panel, which had a VOR and ILS.
 
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