Garmin 300XL wiring - Alt...

[MauiLvrs]

Thanks to the folks here, have the Garmin 300XL hooked  up and talking  the EFIS and HS34. Plays well with the 696. All is well except that it is not getting any altitude input from the D-100. I remember reading here that folks expected that the alt data would come through the HS34 in the 429 ports. Others that have working systems have the 327 wired to the 300.

Wondering if it is accurate that the 300xl should be getting its alt data from the 429 interface or if it needs the data from serial from the 327.

If it is transferred over the 429 bus, there must be some configuration that I missed?

Thanks,
Dave

 

[MauiLvrs]

Re: Garmin 300XL wiring...

I added the link between the 327 and the 300 and alt data is transferred from the d100 to the 327 to the 300.

I checked the data that the HS34 is expected and press alt is one of those that it says it sends over 429 (http://wiki.dynonavionics.com/Generic_ARINC-429_Wiring).

ARINC-429 Labels Transmitted by the HS34
203: Pressure Alt
204: Baro Corrected Alt

I have been uable to locate a list of labels that the 300XL can read.

The 300xl may not be smart enough to know what to do with that data like the 430.
Dave