Instruction Manual

Page 7-62 G1000 / GFC 700 System Maintenance Manual - 200/B200 Series King Air
Revision 9 190-00915-01
(FOR GTS 8000) without indicating a fault, proceed to the next step of antenna verification.
2. Ensure that the transmitter or receiver (TX/RX) that you are testing is significantly closer to the
ramp tester than another operating RX/TX, or erroneous and inaccurate results may occur. All
four quadrants (0, 90, 180 and 270 degrees) will be similarly tested to verify bearing of simulated
intruder supplied via the ramp tester are correctly displayed on the MAP-TRAFFIC MAP page of
the MFD.
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 (GTS 8XX): 50,000 ft
• Intruder Start Altitude (GTS 8000): Local 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 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 connectors are properly secured at the bulkhead adapter fittings, GA58
antennas, GTS unit and GPA 65 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
If no other service is to be performed, continue to the return-to-service checks in Section 8.
7.27.2 Ramp Test
The following test provides a scenario that will converge and intercept the GTS 820/850 or GTS
Processor to assure proper operational and surveillance functions. The GTS 820/850 or GTS Processor
must be in Ground Test mode.
1. On the MAP-TRAFFIC MAP page of the MFD, press the OPERATE softkey (for GTS 8XX) or
TA/RA softkey (for GTS 8000).
2. For GTS 8000 only, change BARO setting to 29.92 in-Hg on PFD1 and PFD2.
3. Position ramp tester at 90 degrees.
4. Select the following on the ramp tester:
• Intruder type: ATCRBS.
• Intruder Start Distance: 15 nm
• Intruder Start Altitude (GTS 8XX): 50,300 ft
• Intruder Start Altitude (GTS 8000): 300 ft above PFD1/PFD2 displayed altitude
• Vertical Speed: 0 fpm