Garmin GTN 6XX, Руководство по техническому обслуживанию системы

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System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1
Page 3-12 Rev. 5
3.4.4.1 TAWS-B Enablement
When the optional TAWS feature is enabled, the GTN will provide Class B TAWS functionality. This
section describes how to reactivate the TAWS feature in the GTN.
NOTE
For first time TAWS 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 TAWS Enablement Card,
P/N 010-00878-01, that was used at the initial
installation.
3. Enter configuration mode by applying power (closing
the circuit breaker) to the GTN while holding the
HOME key.
4. Go to the Terrain Configuration page from the GTN
Options page. Touch the TAWS B key.
When the TAWS feature is activated, the TAWS B key will be
lit green, as shown in Figure 3-13.
NOTE
The feature unlock card should be provided to the
customer after service has been completed.
3.4.4.1.1 TAWS-B Configuration Options
When TAWS-B is enabled as shown in Figure 3-13, the following configuration settings may be accessed:
TAWS Audio
This configuration setting allows the user to select aural alert messages for various caution and warning
types.
Airport Criteria
The GTN TAWS 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 TAWS alerting. See Section 7.5.1 for more
details.
Figure 3-13. GTN 7XX TAWS
Configuration Page