Garmin GPS 400 Pilot's Manual & Reference page 183

Altitude
Deviation
Traffic
Type
Figure 10-4 Traffic Symbol Components
Traffic Type
Traffic This symbol (solid yellow circle) is generated
Advisory (TA) when an intruder aircraft approaches on a
course that projects to intercept (defined by
a 0.5 nm horizontal radius and a relative
altitude of ± 500 ft) the pilot's current
course within 34 seconds.
Out-of- This solid yellow half circle appears under
Range Traffic the same conditions and has the same
Advisory urgency as a TA. Its appearance differs from
the TA only to signify that the intruder is
outside of the current range of the Traffic
Page.
Other Traffic This symbol (hollow white diamond)
Symbol represents traffic detected within the
selected display range that does not meet
the criteria for a TA. (May be configured as
cyan).
Traffic The target track vector is a short line
Ground Track displayed in 45° increments. The vector
protrudes from each target symbol in the
approximate direction of travel.
Table 10-2 TIS Options
190-00140-60 Rev. H
Altitude
Trend
Traffic Ground
Track Vector
Description
GPS 400 Pilot's Guide and Reference
Traffic Page
TIS Traffic data is displayed on the Traffic Page (Figure
10-5) and the Map Page. Unlike other forms of traffic,
TIS traffic does not require heading data to be valid on the
map. If heading is available the Traffic Page is displayed
in heading-up orientation. If it is not available, the Traffic
Page is track-up oriented. Orientation is shown in the
upper portion of the Traffic Page.
Heading or
Track Up Indicator
Figure 10-5 Traffic Page
TIS Traffic Display Status and Pilot Response
• AGE - If traffic data is not refreshed within 6
seconds, an age indicator (e.g., 'AGE 00:12') is
displayed in the lower right corner of the display
(when displaying traffic). See Figure 10-6. The
pilot should be aware that the quality of displayed
traffic is reduced in this condition. After another
6 seconds, if data is still not received, the traffic is
removed from the display.
Figure 10-6 Traffic Age Indicator and Coasting Banner
SECTION 10
ADDITIONAL FEATURES
Traffic
Coasting
Banner
and Age
Indicator
10-5