Gtn Options Page; Figure 3-12. Gtn 7Xx Options Page; Figure 3-13. Gtn 7Xx Terrain Configuration Page - Garmin GTN 6 series Maintenance Manual

3.3.4

GTN Options Page

The GTN Options page, shown in Figure 3-12, leads to
optional features that can be purchased and enabled. Access
the GTN Options page by touching the GTN Options key on
the Configuration Mode page.
3.3.4.1 HTAWS Reenablement
NOTE
This manual only describes the necessary steps to
reenable the HTAWS feature for existing installations.
For first-time HTAWS enablement, refer to the GTN
6XX/7XX Part 27 AML STC IM, P/N 190-01007-B3.
When the optional HTAWS feature is enabled, the GTN will
provide HTAWS functionality. This section describes how to
reactivate the HTAWS feature in the GTN.
1. Remove power from the GTN.
2. Remove the database SD card from the SD card slot
and insert the HTAWS Enablement Card (P/N
010-00878-02) that was used during installation.
3. Enter configuration mode by applying power to the
GTN while holding the HOME key.
4. Go to the Terrain Configuration page from the GTN
Options page. Touch the HTAWS key.
When the HTAWS feature is activated, the HTAWS key will
be lit green, as shown in Figure 3-13.
NOTE
The feature enablement card should be provided to the
customer after service to the GTN has been
completed.
3.3.4.1.1 HTAWS Configuration Options
When HTAWS is enabled as shown in Figure 3-13, the
following configuration settings may be accessed:
Airport Criteria
The GTN HTAWS alerting algorithm adapts the terrain
alerting criteria based on nearby airports. The Airport Criteria configuration options allow the user to
select the minimum criteria that the airport must meet to be considered as a nearby airport for the purpose
of HTAWS alerting.
190-01007-B1
Rev. 1
Figure 3-12. GTN 7XX Options
Figure 3-13. GTN 7XX Terrain
GTN 6XX/7XX Part 27 AML STC Maintenance Manual
Page
Configuration Page
Page 3-9