T-45C TS, ADV & IUT ENG-21
CNI System
e.
Controls and indicators
Sg 3, fr 13
TACAN Control Panel
(1) Power switch (two-position switch)
(a) ON: connects power to system
(b) OFF: disconnects power to system
(2) Option select switch (three-position switch)
(a) Y: selects Y channel for TACAN
operation. (There are 126 preset
operating channels)
(b) X: selects X channel for TACAN
operation. (There are 126 preset
operating channels)
(c) XA/A: selects TACAN air-to-air mode.
Participating aircraft must have 63-
channel separation. Distance
information to suitably equipped
aircraft is displayed on HSI
(3) Channel selector: when rotated, selects
desired channel for TACAN operations and
displays selection on channel window
(4) Channel display window: displays selected
TACAN channel
(5) Volume control knob (VOL): when rotated,
adjusts volume of TACAN station
identification signals
(6) TEST button: initiates system built-in test
(BIT) if pushed and held for a minimum of
5 seconds and the following conditions
exist:
(a) TACAN steering selected on HSI
display
(b) 180 course set on HSI
Page 21-34
(9-98) Change 1
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