G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Page 7-31
190-00716-01
Revision 1
7.13 GTS 8XX Traffic System Functional Check
Perform the following tests to verify GTS 8XX operational and surveillance functions. Use a ramp tester
such as a TIC TR220 or equivalent to perform the tests.
To perform these tests, the aircraft must be on the ground and the GTS 8XX must be in Ground Test mode.
On the MAP-TRAFFIC MAP page of the MFD, press the softkey sequence:
3, 4, 4, 3
The
GND TEST
softkey will appear. Press the
GND TEST
softkey to activate Ground Test mode. This
simulates the GTS 8XX to be airborne at 50,000 feet with a magnetic heading of 0 degrees. To exit the
Ground Test mode, press the
GND TEST
softkey again.
Figure 7-8, GTS 8XX GND TEST softkey
7.13.1
Antenna Verification
The following test assures the antennas and coaxial cables are properly connected. The GTS 8XX must be
in Ground Test mode.
1.
On the MAP-TRAFFIC MAP page of the MFD, press the
OPERATE
softkey. A self test of the
antenna circuit is initialized. If the MFD displays FAILURE at the upper left corner of the traffic
display area, it will be necessary to recheck the coaxial connections. If MFD displays OPERATE
without indicating a fault, proceed to the next step of antenna verification.
2.
Ensure that the transmitter or receiver (RX/TX) 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: 50,000 ft
•
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.)
Summary of Contents for Cessna Caravan G1000
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