7
190-00607-02 Rev C
Detailed Operation
TIS-A Traffic
Operate/Standby
The GMX 200, when installed with a control wire
to the GTX 330, controls the TIS-A sensor operating
mode. The TIS-A sensor defaults to “Operate” when
turned on.
Symbology
•
TIS-A targets are categorized as either “Proxi-
mate Traffic” or “Traffic Advisories.”
•
Proximate Traffic targets are depicted as
hollow blue diamonds.
•
Traffic Advisory targets are depicted as solid
yellow/amber circles.
•
Vectors extending from the targets indicate the
target’s direction of travel as reported by the
TIS-A sensor. The vector length has no mean-
ing.
Ownship (Your Aircraft)
Proximate traffic target with direction of
flight vector and relative altitude
Traffic advisory target with direction of
flight vector and relative altitude
traffic Status Indicators
The following status indicators are displayed in the
lower right portion of the display:
“TIS Operating” to indicate the TIS-A Sensor is
operating and within TIS-A service coverage.
“TIS Coasting” to indicate that the target informa-
tion is between 6 and 12 seconds old. This may happen
if the TIS-A sensor has missed a radar sweep. Target
brightness is also reduced to indicate this condition.
“TIS Unavailable” to indicate the TIS-A sensor is
operating, but outside of TIS-A service coverage.
“TIS Standby” to indicate the TIS-A sensor is in
standby mode and not processing TIS-A information,
even if it is available.
“Traffic Off Scale,” noted in amber in the lower
center of the display, indicates that traffic has been
reported but is not displayed because it is beyond the
current map scale (zoom level).
