Garmin Appliance Data User's Guide Page 53

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41190-00607-02 Rev C
Detailed Operation
ADS-B Traffic
Degraded Target
Degraded targets are shown with the “bullet”
symbol. A degraded target has limited positional
accuracy and can either be an uplinked TIS-B target,
or an ADS-B target who’s GPS position has degraded.
When a degraded target is selected via the SELECT
key in the Traffic function, no distance to the target is
displayed, as it cannot be computed accurately.
Target Color
Service vehicle targets and aircraft targets report-
ing on the ground are colored in tan. Airborne aircraft
targets are usually cyan in color. However, the target
will be yellow if it is within 5 NM and 2,000 feet verti-
cally above or below your position. Selected targets are
green in color.
Surface Targets
Surface vehicle targets, in addition to ADS-B tar-
gets, are supported and are shown as tan, rectangular
icons. They are displayed both on the Traffic Function
page, and on the Custom Map when traffic is turned
on.
Traffic Altitude Values
Altitudes shown next to the traffic icon are in hun-
dreds of feet (09 = 900 feet). Altitude values shown in
all other locations and displays are the actual values in
feet (+100 = 100 feet).
Ident
The Ident smart key allows the pilot to initiate a
sequence that is equivalent to a standard transponder
“Ident,” as requested by ATC. When pressed, the Ident
flag will be displayed while the GDL 90 UAT broadcasts
the ident. The GMX 200 must be configured to be the
UATs control panel for this function to be available.
ADS-B Broadcast ID Info
Operation
The controls at the bottom of the screen allow you
to zoom in and out, initiate an Ident when connected
to a GDL 90 UAT, and to select each traffic target on
the screen.
1. Press the FN key to reach the Function page
showing the TRAF (Traffic) “smart” key.
2. Press
TRAF.
3. Press the
IN key to zoom in. Press the OUT key
to zoom out.
4. With the GDL 90 UAT only, press the Ident key
to initiate an Ident for ATC purposes. A green
flag will appear on the left side of the display
when the GDL 90 UAT reports that it is sending
an ident over the air.
5. Press the Select key to consecutively select each
Traffic item that is shown on the display. When
a target is selected, additional information
about that target is shown in the upper right
corner of the display. The selected target will
be highlighted in green on the display. Surface
vehicle targets cannot be selected.
Information about the selected target includes:
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