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• Satellite data unit (forward avionics bay)
• High power amplifier (vertical stabilizer)
• Radio frequency unit (forward avionics bay)
• High gain antenna (top of vertical stabilizer)
• Cabin communication system interface via handset
• IRS
• Airborne data link system
• Maintenance system through CAIMS
• PC data and FAX capability
Satellite Data Unit (SDU)
Provides interface to all airplane avionics and contains the location of the applicable
satellites, and rate/frequency translation for two voice communication.
Radio Frequency Unit (RFU)
The RFU provides three additional simultaneous voice communication channels when
operated in conjunction with the SDU.
GX_05_049
COMPARE FUEL QUANTITY
0POS SENSORS T.O.INIT0
00OOOO0NAV INDEX 1/2
0BOW PASS/@ LB0
0/170
0WPT LIST
15820 (00+21
0K0P0H0X0001152Z
SJN
0DEPARTURE
15820 (00+15 .75M/10000A
ARRIVALO
ABQ
0FPL LIST
.75M/10000A
TUNEO
DATA LINKO
FPL SELO
COMPARE FUEL QUANTITY
0WX MAP T.O.INIT0
00OODATALINK INDEX 2/2
0BOW PASS/@ LB0
0/170
0REPORTS
15820 (00+21
0K0P0H0X0001152Z
SJN
0TEXT WX
15820 (00+15 .75M/10000A
INFLT COMMO
ABQ
0FLT PLAN
.75M/10000A
MESSAGESO
PREFLIGHTO
WINDSO
For Training Purposes Only
Sept 04
5-37
P I LOT T R A I N I N G GU I D E
COMMUNICATIONS
High Power Amplifier (HPA)
The HPA provides rate/frequency power amplification on the L-band signals
generated by the satellite data unit, or radio frequency unit to a power level required
for transmission to the satellite.
High Gain Antenna/Antenna Control Unit
The antenna is steered by the antenna control unit to point a high gain beam in the
direction of the desired satellite.
Communication Link Schematic
The following schematic depicts the interface between the various components as
related to the MCS-6000, minus buyer furnished equipment. Example: PC data
provision, FAX, and analog phones.
GX_05_050
PRINTER
PC/MODEM
FAX
PHONE HANDSET
LOCAL
TELEPHONE
COMPANY
LONG DISTANT
TELEPHONE
COMPANIES
GROUND
STATION
DATA
COMMUNICATIONS
GROUND SYSTEM AIRBORNE SYSTEM
CONTROL
SWITCHES
DATA LINK
PRINTER
CABIN DATA
PHONE
HANDSET
FAX
PC/MODEM
COMMUNICATIONS
MANAGEMENT
SYSTEM
SATELLITE DATA
UNIT
RADIO
FREQUENCY
UNIT
AMPLIFIER
RECEIVE
TRANSMIT
HIGH GAIN
ANTENNA
IRS
P I LOT T R A I N I N G GU I D E
COMMUNICATIONS
5-38 For Training Purposes Only
Sept 04
CABIN COMMUNICATION SYSTEM (IF INSTALLED)
The Cabin Communication System (CCS) option provides a private automatic branch
exchange switching network. This network routes voice and data communications to
and from up to nine active devices (handsets/FAXs/modems/data link etc.) in the
airplane, and provides two air-to-ground channels. The systems include connections of
basic telephone/telecomputing equipment to UHF antenna and SATCOM links. In the
event a data link device is installed on the airplane, the CCS has the capability to
communicate with the data link device using an internal modem.
The digital radio components consist of: one UHF antenna, filtering device, and one
airborne radio telecommunication unit. The CCS plus all customer supplied handsets/
FAXs/modems is known as the Office In The Sky (OITS).
The digital handset is located in the flight compartment and has a backlit LCD display
and telephone style keypad used to dial calls and select various options. A credit card
reader (for optional billing) is built into the handset, and a two-button increase/
decrease volume control (side of handset) is also installed.
Refer to the manufacture handbook for description/function and operation of the
system.
GX_05_051
For Training Purposes Only
Sept 04
5-39
P I LOT T R A I N I N G GU I D E
COMMUNICATIONS
FLIGHT COMPARTMENT PRINTER (IF INSTALLED)
The optional flight compartment printer is installed in the copilot’s side console. The
printer has ARINC 429 and standard PC interfaces and is capable of full format and
graphic printing of information from CAIMS and DATALINK.
The printer can be used to print selected messages and weather data sent to it via the
Airborne Data Link System (ADLS). The printer is also used by the Central Aircraft
Information Maintenance System (CAIMS) to print out certain maintenance fault and
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