Garmin G1000 System Maintenance Manual page 260

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 00 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 QMA connectors are 'snapped' firmly in place at the GA58 antennas, GTS
8XX unit and GPA 65 unit
•
Coax cable TNC connectors are properly secured at the bulkhead adapter fittings
•
Connections are made to the proper channels and color-coded heat shrink is the same color
on both ends of coax cables
•
QMA and TNC connectors are correctly installed on coax cables
7.13.2
Ramp Test
The following test provides a scenario that will converge and intercept the GTS 8XX to assure proper
operational and surveillance functions. The GTS 8XX must be in Ground Test mode.
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.
•
Intruder Start Distance: 10 nm
•
Intruder Start Altitude: 50,000 ft
•
Vertical Speed: 0 fpm
•
Velocity: 360 kts
4. Initiate the intruder scenario and observe the following:
•
Traffic should be acquired at approximately 10 NM at 90 degree bearing and co-altitude.
Observe intruder closes on own aircraft at a rate of 0.1 NM/sec. Verify that only a single
target is displayed in the expected quadrant.
•
The intruder should transition from Other Traffic (displayed as an open diamond with 00
displayed above), to proximate traffic (displayed as a filled white diamond with 00
displayed above), to a Traffic Advisory (TA) alarm (yellow filled circle with 00 displayed
above.)
The aural TA annunciations are muted if the gear is extended (and the Radio
Altimeter indicates below 400 feet).
Page 7-32
Revision 1
NOTE
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
190-00716-01