Installation Instructions
190-01007-A3 GTN 6XX/7XX AML STC Installation Manual
Rev. 4 Page 5-17
Table 5-6. RS-232 Channel Output Selections
Selection
GNS
Equivalent
Description Notes
Off Off No unit(s) connected to output of this channel.
ADS-B ADS-B
Serial communication of GPS data to Garmin panel mount
mode S transponders. Note: This format is not required when
using any other GTX output format.
[1]
ADS-B+ N/A
Serial communication of GPS data to Garmin panel mount
mode S transponders with GTX software version 7.01 or later
for AC 20-165 compliance. Note: This format is not required
when using any other GTX output format that is described as
being for AC 20-165 compliance.
[1] [7]
Aviation Output 1 Aviation
Serial position, GPS altitude, velocity, and navigation data to the
following units:
• Garmin MX20 (V5.6 or later), GMX 200
•
Garmin GTX 327 Transponder
[2]
Aviation Output 2
Aviation no
alt
Serial position, velocity, and navigation data to the following
units:
• Garmin MX20 (V5.5 or earlier)
[2]
External EGPWS
HW
EGPWS
Serial communication to a Bendix/King (Honeywell) KGP 560
EGPWS.
[3]
GMA Format 1 N/A Control of GMA 35 Audio Panel functions. [4]
GMA Format 2 N/A This interface is not used in this STC. [7]
GNS Crossfill N/A
Select this format to transmit flight plan information
automatically to a connected GNS 400W/500W navigator.
[5] [7]
GSR Format 1 N/A Select this format for the Garmin GSR 56. [6] [7]
GTX Mode C #1 N/A
Control of GTX 32/327 #1 transponder functions, pressure
altitude data, and groundspeed data.
[1]
GTX Mode C #2 N/A
Control of GTX 32/327 #2 transponder functions, pressure
altitude data, and groundspeed data.
[1]
GTX Mode S #1 N/A
Control of GTX 33/33ES/328/330/330ES #1 transponder
functions, pressure altitude data, and groundspeed data.
[1]
GTX Mode S+ #1 N/A
Control of GTX 33ES/330ES #1 transponder functions, pressure
altitude data, and groundspeed data. For use with GTX software
version 7.01 or later for AC 20-165 compliance.
[1] [7]
GTX Mode S #2 N/A
Control of GTX 33ES/330ES #2 transponder functions, pressure
altitude data, and groundspeed data.
[1]
GTX Mode S+ #2 N/A
Control of GTX 33ES/330ES #2 transponder functions, pressure
altitude data, and groundspeed data. For use with GTX software
version 7.01 or later for AC 20-165 compliance.
[1] [7]
GTX w/TIS #1 N/A
Control of GTX 33/33ES/330/330ES #1 transponder functions,
pressure altitude data, groundspeed data, and TIS traffic.
[1]