Installation guide

47
Detailed Operation
ADS-B Traffic
Confirm Code
When the MX20 starts up and you then press any function key, a pop-up will appear for you to confirm the
ATC-assigned code or set your aircraft ADS-B Code to 1200. Press OK to confirm the displayed ADS-B Code
or press 1200 to set the Code to 1200. The ADS-B Code will not be sent to the GDL 90 UAT until you press
OK or 1200.
Operation
The controls at the bottom of the screen allow you to zoom in and out, initiate an Ident, 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. 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 symbol 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: ID, aircraft type, position between target and ownship,
distance, speed, and altitude. Position is noted in clock numerals as relative to direction of travel for
each aircraft. For instance, a position noted as 11/2 means that the traffic is at your aircraft (ownship)
11 o’clock position and your aircraft (ownship) is at the target’s 2 o’clock position.
Traffic Option Page 1
The first option page of the Traffic function lets you select options for the choices of Transmit Status, Broadcast
Mode, ADS-B Code, Set ADS-B Code to 1200, and Service Codes . The Next Page option selection takes you to
the next page of options.
ADS-B Traffic Menu Items (Page 1)
Selected ADS-B Target Information Detail
Confirm ADS-B Code