Garmin G1000 NXi Supplemental Maintenance Manual page 153

3. Set up a stationary intruder by selecting the following on the ramp tester:
•
Intruder type: ATCRBS.
•
Intruder Start Distance: 2 nm
•
Intruder Start Altitude: 600 feet above field elevation
•
Vertical Speed: 0 fpm
•
Velocity: 0 kts (on some ramp testers, a velocity greater than 0 kts is required and
a stationary intruder is created by not starting the scenario.)
4. Position ramp tester at 0 degrees.
5. Initiate the intruder scenario and verify a target is annunciated on the MAP-TRAFFIC
MAP page of the MFD at the correct bearing of approximately 0 degree azimuth at 2 NM
and co-altitude (read as +06 above a filled diamond indicating proximate traffic).
6. On the ramp tester, toggle intruder traffic to standby or off.
7. Reposition ramp tester and reengage the same intruder scenario for 90, 180 and 270
degrees.
8. Verify a target is annunciated on the MAP-TRAFFIC MAP page of the MFD at the same
bearing as the ramp tester.
9. If the bearing is not as anticipated or multiple targets are displayed during tests, verify the
following:
•
Coax cable connectors are properly secured at the bulkhead adapter fittings, GA
58 antennas, and GTS unit
•
Connections are made to the proper channels and color-coded heat shrink is the
same color on both ends of coax cables
•
Connectors are correctly installed on coax cables.
Note: These tests are conducted at field elevation. Additional local traffic targets may appear
and are not an indication of improper system operation.
Note: When an IFR6000 ramp tester is used with a GTS 800, the IFR6000 must be configured
for a distance that is 4 times the actual distance. For example, if the ramp tester is located 10 ft
away from an aircraft, the IFR6000 should be configured as if it were 40 ft away from the aircraft.
This will adjust the MTL setting of the IFR6000 such that it will see the GTS 800 low power
interrogations and reply to the interrogations.
GTS Ramp Functional Check
The following test provides a scenario that will converge and intercept the GTS to assure proper
operational and surveillance functions.
1. On the MAP-TRAFFIC MAP page of the MFD, press the OPERATE softkey.
2. Position ramp tester at 90 degrees.
3. Select the following on the ramp tester:
•
Intruder type: ATCRBS.
G1000 Supplemental Maintenance Manual
Textron Nav III Series
190-02128-04
Page 7-48
Revision 3