Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 5-80 Rev. 4
5.5.4.11.3 ARINC 708 Weather Radar Configuration
NOTE
If a GWX weather radar is already configured, the key to configure an ARINC
708 weather radar will be disabled because the radar types are mutually
exclusive.
NOTE
The Digital Radar option must be enabled before ARINC 708 weather radar
can be configured, Refer to Section 5.5.2.4.
As part of the wiring installation the GTN 7XX will be connected to the weather radar as display #1 or
#2, and the GTN 7XX must be configured accordingly. Follow the steps below to perform ARINC 708
weather radar configuration.
1. Enter configuration mode on the GTN by applying power to the GTN (closing the circuit breaker)
while holding the HOME key.
2. Go to the ARINC 708 page in the GTN Setup page group.
3. For External Weather Radar choose the appropriate ARINC 708 weather radar type by touching
Off and selecting the correct type from the list.
NOTE
When an ARINC 708 weather radar is configured, the ARINC 429 Out 3
format will automatically be set to Radar Format 1, which is the format used to
control the weather radar.
4. Go to the Weather Radar page in the External Systems group.
5. Choose the appropriate Display number, to match the connections to the weather radar.
6. The ARINC 708 weather radar system may also require additional calibration. Refer to the
following sections.