T-45A UJPT, E2-C2, ADV, & IUT Eng-21
CNI System
(a) Extended: normal position,
pilot hears selected radios
and intercom
(b) Depressed: MUTE enabled,
decreases volume of
incoming radio transmissions
4.
Aircraft interfaces--communication system
Sg 2, fr 11
1.4.18.2
a.
COMM 1 power
(1) 28 VDC essential services bus:
operating
(2) 28 VDC generator bus or 5 VAC
CNI INPUT POWER SOURCES
nonessential bus: lighting via
INTERIOR LIGHT DIMMING
panel switch and MIP dimmer
b.
COMM 2 power
(1) 28 VDC generator bus: operating
(2) 28 VDC generator bus or 28 VAC
nonessential bus: lighting via
INTERIOR LIGHT DIMMING lights
panel switch and MIP CONSOLE
dimmer
c.
Receives RF through COMM 1/
COMM 2 antennas
NOTE: antennas are not interchangable.
d.
Logic that enables and controls
selection and display of remote RT
frequencies to both cockpits
e.
COMM control panel selects audio
inputs to headset
f.
Transmits UHF/VHF radio signals
(8-03) Original
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