TM250 / P/N 250TM-(xxx)-(xxx)
Operation and Installation
20
Document No.: 03.310.010.71e / Revision: 2.10
2.5
ICAO Configuration Page
With the
key the configuration view for ICAO can be selected.
In order that ADS-B signals of the own Mode S transponder will not be
misinterpreted as one of another traffic object, the TM250 must be
initialized before first use. Based on the transponder signals, the TM250
determines which ICAO 24-bit address is assigned to the own aircraft.
During this initialization, the currently received ADS-B messages
(position, height, ICAO 24-bit address) are compared with the own GPS
position. If an ADS-B signal is received with the same position, this is
interpreted as the own one and the ICAO 24-bit address is adopted. The
corresponding barometric altitude will be used for comparison with the
ADS-B transmission from other traffic objects and thus serves to
determine the relative altitude (see 2.3.2).
If the own Mode S transponder is not ADS-B capable, the signal with the
greatest field strength is interpreted as the own one. If an own barometric
altitude cannot be determined, the absolute height in flight levels (FL) is
used for the representation of transport objects instead of relative height
values (see 2.3.2).
The described initialization is done under the menu item ICAO:
With the
key
select menu item
ICAO.
The searching
process and
comparative
process starts when
the
key is
pressed.
After a successful comparison, the recognized ICAO 24-bit address will
be displayed.
Under ICAO following entries can appear:
