Figure 3-16 Weather Radar Page - Garmin GTN Xi Series Maintenance Manual

3.2.4.4 Weather Radar (GTN 7XX Xi 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 Xi.
1. Power off the GTN Xi by opening the NAV/
GPS circuit breaker.
2. Remove the database SD card from the data
card slot and insert the Digital Radar
Enablement Card (P/N 010-00878-42).
3. Power on the GTN Xi in Configuration mode
by applying power (i.e., closing the circuit
breaker) while holding the HOME key.
4. Navigate to the Weather Radar page from the
GTN Options page and 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.
3.2.4.4.1 GWX Advanced Features (GTN 7XX Xi Only)
The GTN 7XX Xi can enable two Doppler radar features for the GWX 70/75. A Radar Turbulence
Detection Card (P/N 010-00878-45 or P/N 010-00878-47 (dual install)) is needed for Turbulence
Detection and a Radar Automatic Ground Clutter Suppression Enablement Card (P/N 010-00878-44 or
P/N 010-00878-46 (dual install)) is needed for Ground Clutter Suppression.
To enable Radar Turbulence Detection:
1. Power off the GTN Xi by opening the NAV/GPS circuit breaker.
2. Remove the database SD card from the data card slot and insert the Radar Turbulence Detection
Enablement Card (P/Ns 010-00878-45 or 010-00878-47).
3. Power on the GTN Xi in Configuration mode by applying power (i.e., closing the circuit breaker)
while holding the HOME key.
4. Navigate to the Weather Radar page from the GTN Options page. Touch the Turbulence
Detection key, as shown in Figure 3-16.
5. When prompted, touch Yes to enable Turbulence Detection. When the feature is activated, the
Turbulence Detection key will be lit green.
To enable Ground Clutter Suppression:
1. Power off the GTN Xi by opening the NAV/GPS circuit breaker.
2. Remove the database SD card from the data card slot and insert the Radar AGCS Enablement Card
(P/Ns 010-00878-44 or 010-00878-46).
3. Power on the GTN Xi in Configuration mode by applying power (i.e., closing the circuit breaker)
while holding the HOME key.
4. Navigate to the Weather Radar page from the GTN Options page. Touch the Ground Clutter
Suppression key, as shown in Figure 3-16.
5. When prompted, touch Yes to enable Ground Clutter Suppression. When the feature is activated,
the Ground Clutter Suppression key will be lit green.
190-01007-C1
Rev. 1

Figure 3-16 Weather Radar Page

GTN Xi Part 23 AML STC Maintenance Manual
Page 3-17