Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 5-104 Rev. 4
5.7.8.11.2 SiriusXM® Satellite Radio Audio Checkout Procedure
The following steps only need to be completed for GDL 69A installations.
1. Go to the Music page from the Home page.
NOTE
If the SiriusXM Satellite Radio audio subscription has not been activated, audio is
available only on Channel 1. If the audio subscription has been activated, audio should
be available on multiple channels.
2. Ensure the GDL 69A audio is not muted.
3. Verify that audio can be heard over the headsets. Adjust the volume to verify that the data path is
working correctly and to ensure the volume is at an appropriate level.
5.7.8.12 External RMI/OBI Interface Check (GTN 650/750 Only)
The GTN VOR RMI/OBI output can be used to drive an RMI (or OBI) navigation indicator. This check
verifies that the RMI/OBI is receiving data from the GTN. If the following steps do not perform correctly,
check the electrical connections and configuration setup.
NOTE
The aircraft heading system must be operating properly in order for the RMI needle to
point correctly.
5.7.8.12.1 VOR OBI Output
If the VOR OBI output from the GTN 650/750 is connected to an RMI navigation indicator verify the
interface as described in this section.
1. Apply power to the equipment.
2. If installed, set the RMI select switch to the VLOC position.
3. Tune a local VOR station, or use a simulated signal from an approved VOR Test System.
4. Verify that the RMI needle swings and points toward the VOR station.
5.7.8.13 DME Tuning Check (GTN 650/750 Only)
If the GTN is set up to remotely channel a DME, verify the interface as described in this section.
1. Select a VOR/ILS channel that corresponds to (1) a DME station within a 40 nautical mile range,
or (2) the frequency of a DME ground tester.
2. Verify that the DME locks on to the signal and a valid distance is displayed.
3. Tune an invalid VOR station. Verify that the DME data is flagged.
4. If two GTNs are set up to remotely channel a DME, repeat steps 1-3 using the other GTN.