Installation Instructions

190-01007-A3 GTN 6XX/7XX AML STC Installation Manual
Rev. 4 Page 5-71
5.5.4.9.2.3 External GPS/SBAS Source Antenna
These settings indicate the horizontal placement of the external GPS source(s) GPS/WAAS antenna(s).
External GPS #1 is the GPS source connected to GDL 88 Time Mark 1
If external GPS #1 is connected to the GDL 88, enter the external source’s GPS/WAAS antenna
longitudinal offset distance rounded to the nearest foot from the nose of the aircraft, and the lateral offset
as measured in feet (left or right, looking forward) from the centerline of the aircraft.
External GPS #2 is the GPS source connected to GDL 88 Time Mark 2
If external GPS #2 is connected to the GDL 88, enter the external source’s GPS/WAAS antenna
longitudinal offset as measured in feet from the nose of the aircraft, and the lateral offset as measured in
feet (left or right, looking forward) from the centerline of the aircraft.
5.5.4.9.3 Audio Configuration Page
This page configures the GDL 88 analog audio output volume level and voice type as shown in Figure
5-43. To access this page, touch External Systems → GDL 88 → Configuration → Audio.
1. Select the desired voice gender as Male or Female. Set the audio volume to an acceptable level
as described in the GDL 88 Part 23 AML STC Installation Manual.
2. Touch Run Audio Test to check the audio volume level.
Figure 5-43. GDL 88 Audio Configuration