T-45A UJPT, E2-C2, ADV, & IUT Eng-21
CNI System
D.
IFF system (transponder): The IFF transponder
Sg 2, fr 12
provides for aircraft identification and air traffic
control functions. It is controlled remotely by the
IFF control panel located in the fwd cockpit, right
console.
1.
IFF control panel: controls operation of IFF
transponder
IFF SYSTEM--
2.
IFF transponder
MAJOR COMPONENTS
a.
Receives series of multiple-pulse
interrogation signals from ground-
based, shipboard, or airborne
interrogator (encoded radar signal)
b.
Decodes interrogation signals
c.
Checks validity of signals
d.
Transmits reply to provide
(1) Aircraft identification
(2) Altitude from barometric altimeter
(Mode C)
e.
Both antennas receive transmissions,
but only the antenna receiving the
strongest signal transmits reply
3.
IFF control panel functionality
Sg 2, fr 13
a.
Master control selector (MASTER)
(1) OFF: disconnects power to sys-
tem
(2) STBY: places receiver-transmitter
in warmup (standby condition)
IFF CONTROL PANEL
Page 21-18
(8-03) Original
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