System Checkout
190-01810-00
GDL 82 TSO Installation Manual
Rev. 5
Page 8-3
b. For VHF radios with 8.33 kHz channel spacing, include the following frequencies in addition to those listed
above:
8.
Repeat steps 6 and 7 for all remaining COM transceivers installed in the aircraft.
9.
If the aircraft is equipped with Traffic Collision Avoidance System (TCAS), turn on TCAS and verify that GPS
position remains valid. (If position is lost, the Navigation Status will change to ACQUIRING.)
If aircraft is SATCOM-equipped, use the SATCOM system and verify that GPS position remains valid. (If position is lost, the
Navigation Status will change to ACQUIRING.)
External GPS Source
The GPS checkouts described in this section are applicable for installations where position information is provided by an
external GPS source.
If the following steps do not perform correctly, check the electrical connections and configuration setup for the
interfaced GPS source.
1.
Allow the external GPS source to acquire a position fix.
2.
Go to the GPS page in the GDL 8X Install Tool and verify the applicable external GPS status fields are valid.
8.1.2 Interface Checks
Verify the GDL 82 is communicating properly to interfaced equipment. Skip non-applicable interfaces.
Transponder
This check verifies that the GDL 82 is receiving the correct input information from the transponder. If the following
steps do not perform correctly, check the electrical connections and configuration setup for the interfaced transponder.
1.
Go to the ADS-B page in the GDL 82 Install Tool.
2.
Select
ALT
mode on the transponder.
3.
Verify the Interface Status field indicates receiving (green box).
4.
Verify the Mode field indicates the same as the active transponder.
5.
Verify the Squawk code agrees with the transponder.
6.
Activate the
IDENT
function on the transponder.
7.
Verify the IDENT Status on the ADS-B page changes from inactive to active.
8.
Verify the Pressure Altitude field agrees with the active altitude source.
Discrete Inputs
If the GDL 82 is connected to any external switches, perform the following steps:
1.
Go to the GDL 82 Discretes page.
2.
If a squat switch is installed, verify the Squat Switch* discrete input indicates Active when the switch provides a
ground signal, and Inactive when the switch provides an open signal.
3.
If an anonymous mode switch is installed, verify the Anonymous Mode* discrete input indicates Active when the
switch is in the ENABLED position, and Inactive when the switch is in the DISABLED position.
4.
If the GDL 82 does not receive the correct signal from the interfaced switch, verify the wiring and ensure it is
connected properly and not shorted to ground.
121.185 MHz
130.285 MHz
121.190 MHz
131.290 MHz
