Garmin gnc 420 用户指南
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GNC 420/420A Pilot’s Guide and Reference
11-10
SECTION 11
ADDITIONAL FEATURES
Power-Up Test
The TIS interface performs an automatic test during
power-up.
• If the system passes the power-up test, the
Standby Screen appears on the Traffic Page.
• If the system passes the power-up test and the
aircraft is airborne (as determined by system
configuration at the time of installation, see the
installer for detailed criteria information), traffic is
displayable on the Traffic Page in operating mode.
configuration at the time of installation, see the
installer for detailed criteria information), traffic is
displayable on the Traffic Page in operating mode.
• If the system fails the power-up test, one of the
messages listed in Table 11-2 will be displayed .
See the installer for corrective action if the ‘DATA
FAIL’, or ‘FAILED’ message is displayed.
See the installer for corrective action if the ‘DATA
FAIL’, or ‘FAILED’ message is displayed.
Message
Description
FAILED
GTX 330 has failed
DATA FAIL
Data is being received from the GTX 330,
but a failure was detected in the data stream
but a failure was detected in the data stream
NO DATA
Data is not being received from the GTX 330
Table 11-2 Power-up Messages
NOTE: ‘NO DATA’ may be a normal mode of
operation in a dual transponder installation
where the GTX 330 with TIS is not the selected
transponder.
operation in a dual transponder installation
where the GTX 330 with TIS is not the selected
transponder.
Manual Override
The user can manually switch between standby (STBY)
and operating (OPER) mode of operation to manually
override automatic operation.
override automatic operation.
Placing the display into operating mode
from the standby mode (to display TIS
traffic):
from the standby mode (to display TIS
traffic):
1) Press the small right knob to activate the
cursor, and highlight ‘STBY’.
2) Turn the small right knob to select ‘OPER?’.
3) Press the ENT Key to confirm.
3) Press the ENT Key to confirm.
Placing the display into standby mode from
operating mode (to stop displaying TIS
traffic):
operating mode (to stop displaying TIS
traffic):
1) Press the small right knob to activate the
cursor, and highlight ‘OPER’.
2) Turn the small right knob to select ‘STBY?’.
3) Press the ENT Key to confirm.
3) Press the ENT Key to confirm.
Flight Procedures
Once the aircraft is airborne (determined by system
configuration at the time of installation) the system
switches from standby mode to operating mode. The
GNC 420 unit displays OPER in the upper right hand
corner of the display and begins to display traffic on the
Traffic or Map Page.
switches from standby mode to operating mode. The
GNC 420 unit displays OPER in the upper right hand
corner of the display and begins to display traffic on the
Traffic or Map Page.
The TIS Traffic Advisory (TA) should alert the crew to
use additional vigilance to identify the intruding aircraft.
Any time the traffic symbol becomes a yellow circle or
a voice warning is announced, conduct a visual search
for the intruder. If successful, maintain visual contact
to ensure safe operation. See TIS Traffic Display Status
and Pilot Response, in this section for a list of TIS display
messages and respective pilot responses.
Any time the traffic symbol becomes a yellow circle or
a voice warning is announced, conduct a visual search
for the intruder. If successful, maintain visual contact
to ensure safe operation. See TIS Traffic Display Status
and Pilot Response, in this section for a list of TIS display
messages and respective pilot responses.
After Landing
Once the aircraft is on ground (determined by system
configuration at the time of installation) the system
switches from operating mode to standby mode. The
GNC 420 unit displays ‘STBY’. As described previously,
both the standby and operating modes can be manually
overridden by the display controls.
switches from operating mode to standby mode. The
GNC 420 unit displays ‘STBY’. As described previously,
both the standby and operating modes can be manually
overridden by the display controls.