Garmin MX20 Installation Manual - page 56

Installation 

46 

560-1025-09 Rev E 

MX20 Installation Manual 

2.9.12 Garmin AT GDL 69/69A Checkout Procedure 

2.9.12.1  FIS Data Link Checkout Procedure (GDL 69/69A) 

The checkout procedure involves verifying that the satellite signal is acquired and tracked.  Locate the 

aircraft where there is a clear view of the southeastern or southwestern sky.  XM Satellite Radio satellites 

are located above the equator over the eastern and western coasts of the continental United States.  

1.  Turn on the power to the MX20 and the GDL 69/69A receiver.   

2.  After the MX20 performs its self-tests, enter the FIS function by pressing the FN key until the FIS 

function is available.   

3.  Press the FIS corresponding smart key.  Press the fourth smart key until the status page is 

displayed.   

4.  Perform the Post-Installation Checkout Procedure as described in the GDL 69/69A Installation 

Manual (Part Number 190-00355-02). 

2.9.12.2  XM Satellite Radio Audio Checkout Procedure (GDL 69A only) 

The checkout procedure involves verifying that the satellite signal is acquired and tracked and that audio 

can be heard through the audio panel.  Locate the aircraft where there is a clear view of the southeastern or 

southwestern sky.   

1.  Turn on the power to the MX20, GDL 69A, and audio panel.   

2.  After the MX20 performs its self-tests, press the FN key until the XM function appears.  Press the 

corresponding smart key.   

NOTE 

If the XM 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.  Refer to the MX20 Pilot’s Guide and the audio panel operator’s manual 

for instruction on changing channels and adjusting the volume.   

3.  Receiving channel information on the MX20 and changing channels verifies the communication 

link between the MX20 and GDL 69A.   

4.  Changing volume verifies proper audio connections between the GDL 69A and the audio panel. 

2.9.13 WSI InFlight Checkout Procedure 

The checkout procedure involves verifying that the satellite signal is acquired and tracked.  

1.  Turn on the power to the MX20 and WSI InFlight AV-200 receiver.  

2.  After the MX20 performs its self-tests, enter the FIS function by pressing the FN key until the FIS 

function option is available.  

3.  Press the corresponding FIS “smart key” followed by the Menu/Enter key, and finally the “Status” 

Line Selection key. The top three lines indicate signal reception quality.  

4.  Perform the Post-Installation Checkout Procedure as described in Section 4 of the WSI InFlight 

AV-200 Installation Manual.  

2.9.14 Honeywell KMH 820 IHAS Checkout Procedure 

Checkout of the TAWS function should be done according to the procedures in Section 2.9.10, which are 

those for the KGP 560.   

Checkout for the TAS function should be done according to the procedures in Section 2.9.7, which are 

those for the SkyWatch sensors.