Garmin GTN 6 series Maintenance Manual - page 35

190-01007-A1

System Maintenance Manual GTN 6XX/7XX Part 23 AML STC

Rev. 6

Page 3-15

3.4.4.4

Digital Radar Enablement (GTN 7XX Only)

This section describes how to re-enable the Digital Radar 

feature, which allows approved ARINC 708 Weather Radars 

to be interfaced with the GTN 7XX. 

NOTE

For first time Digital Radar enablement, refer to the 

GTN 6XX/7XX AML STC IM, P/N 190-01007-A3, 

for additional requirements and checkout 

procedures. This manual only describes the 

necessary steps to re-enable the feature for existing 

installations.

1. Turn the GTN off by pulling the NAV/GPS circuit 

breaker. 

2. Remove the database SD card from the SD card slot 

and insert the Digital Radar Enablement Card, 

(P/N 010-00878-42), that was used at the initial installation. 

3. Enter configuration mode on the GTN by applying power to the GTN (closing the circuit breaker) 

while holding the HOME key.

4. Go to the Weather Radar page from the GTN Options page. Touch the Digital Radar key, as 

shown in Figure 3-16.

5. When prompted, touch Yes to enable Digital Weather Radars. When the feature is activated, the 

Digital Radar key will be lit green.

NOTE

The feature enablement card should be provided to the customer after service has been 

completed. 

Figure 3-16. Weather Radar Page