Garmin GPS 400 Pilot's Manual & Reference page 188

SECTION 10
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.
• If the system fails the power-up test, one of the
messages listed in Table 10-3 will be displayed .
See the installer for corrective action if the 'DATA
FAIL', or 'FAILED' message is displayed.
Message
FAILED GTX 330 has failed
Data is being received from the GTX 330,
DATA FAIL
but a failure was detected in the datastream
NO DATA Data is not being received from the GTX 330
Table 10-3 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.
Manual Override
The user can manually switch between standby (STBY)
and operating (OPER) modes of operation to manually
override automatic operation.
Placing the display into operating mode
from the standby mode (to display TIS
traffic):
Press the small right knob to activate the
1)
cursor, and highlight 'STBY'.
10-10
Description
GPS 400 Pilot's Guide and Reference
2) Turn the small right knob to select 'OPER?'.
3) Press the ENT Key to confirm.
Placing the display into standby mode from
operating mode (to stop displaying TIS
traffic):
1) Press the small right knob to activate the
cursor, and highlight 'OPER'.
Turn the small right knob to select 'STBY?'.
2)
Press the ENT Key to confirm.
3)
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 GPS
400 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 pages 10-5, 10-6, and 10-7 for
a description of pilot responses to TIS display messages.
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
GPS 400 unit displays 'STBY'. As described previously,
both the standby and operating modes can be manually
overridden by the display controls.
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