T-45C TS, ADV & IUT ENG-21
CNI System
PROGRESS CHECK
Question 1 — 1.4.18.2.1
What buses provide electrical operating power to the
communication system (COMM 1, COMM 2, ICS, and IFF)?
ANSWER: 28 VDC essential services bus; COMM 2: 28 VDC
generator bus
Question 2 — 1.4.18.3.1
What is the function of the COMM control panel?
ANSWER: It provides selection of COMM amplifier (normal or
alternate); provides master volume controls for COMM radios,
ICS, VOR/ILS, and TACAN; allows selection of audio that you’re
going to hear; and provides HOT/COLD MIC selection.
Sg 3, fr 2
III. Controls and operational characteristics--navigation system
Lesson Organization
1.4.18.2.1, 2.1.10.1.21
CNI SYSTEM
A.
GINA: The T-45C GINA is a self-contained, all attitude,
* Major CNI components
world wide, strap-down inertial system and embeded
* Controls and operational
characteristics--communication
GPS receiver. GINA provides all attitude (digital and
system
analog), acceleration, position heading and time to the
* Controls and operational
characteristics--navigation
Display Electronic Unit (DEU) over the MUX Bus for
system
processing ADI and HSI display and the MFDs
* Antenna locations (CNI)
1.
Inertial system
Sg 3, fr 3
Fig 5: GINA System--
a.
Three gyros detect rotation in their
Major Components
respective axis for output to DEU
b.
Three accelerometers detect acceleration in
their respective axis for output to DEU
2.
GPS receiver/antenna
a.
Receiver RF ranging codes and navigation data
broadcast from GPS satellites orbiting the earth
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