Garmin G3X Pilot's Manual page 235

SYSTEM TEST
Traffic surveillance is not available during the system test. Use
NOTE:
caution when performing a system test during flight.
The GTS 800 provides a system test mode to verify the TAS system is operating
normally. The test takes ten seconds to complete. When the system test is initiated, a
test pattern of traffic symbols is displayed on the Traffic Map Page. If the system test
passes, the aural announcement "TAS System Test Passed" is heard, otherwise the
system announces "TAS System Test Failed." When the system test is complete, the
traffic system enters Standby Mode.
Testing the traffic system:
1) Turn the FMS Joystick to the Traffic Page.
2) Press the RNG Key to set the range to 2/6 nm to allow for full test pattern
to be displayed during test.
3) Press the MENU Key to display the page menu.
4) With SELF-TEST highlighted press the ENT Key to start the self-test.
OPERATION
The GTS 800 automatically transitions from STANDBY to
NOTE:
OPERATE mode eight seconds after takeoff. The unit also automatically
transitions from OPERATE to STANDBY mode 24 seconds after landing.
After power-up, the GTS 800 is in Standby Mode. The GTS 800 must be in Operating
Mode for traffic to be displayed and for TAs to be issued.
Pressing the OPERATE Softkey allows the traffic unit to switch from Standby Mode
to Operating Mode as necessary. Pressing the STANDBY Softkey forces the unit into
Standby Mode.
190-01115-00 Rev. G
Traffic Page Menu
Garmin G3X Pilot's Guide
Hazard Avoidance
217