T-45A UJPT, E2-C2, ADV, & IUT Eng-21
CNI System
(7) Station identity processed to provide audio
to pilot's headset when VOR switch on
COMM control panel is set to VOR
b.
ILS operation
Sg 3, fr 4
(1) Provides instrument landing system (ILS)
information (localizer, glideslope, and
marker beacon)
(2) Power/frequency selector on VOR/ILS
control panel set to PWR (no warm-up
required)
ILS DISPLAYS
(3) ILS frequency is tuned (108.10 to 111.95)
(4) Signals from the localizer and glideslope
transmitter are routed through the
VOR/LOC and glideslope antennas to
receiver
(5) Receiver detects, filters and compares the
90 Hz and 150 Hz signals to provide out-
puts
(6) Displays localizer and glideslope on pitch
and bank course deviation bars on ADI;
displays glideslope (GS) warning flag and
localizer (LOC) warning flag
(7) Displays course deviation from an ILS
localizer (CDI), glideslope information and
glideslope (GS) warning flag on the HSI
Sg 3, fr 5
c.
Marker beacon: indicates beacon passage by
flashing marker beacon lights and audio tone
(1) O (Blue) illuminated indicates aircraft
passing over the outer marker beacon; a
series of audible dashes in headset indi-
cates aircraft passing over the outer marker
beacon
VOR/ILS SYSTEM--
MARKER BEACON LIGHTS
Page 21-24
(8-03) Original
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