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UF94200
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HONEYWELL MCS SATCOM COMPONENTS
HIGH GAIN ANTENNA
IDENTIFICATION
FIN: 16RV
LOCATION
ZONE: 250
COMPONENT DESCRIPTION
The top mounted High Gain Antenna is mounted with an
adapter plate on the fuselage. It is equipped with a
J1 connector for connection with the BSU and a J2
connector for connection with the D/LNA.
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HONEYWELL MCS SATCOM COMPONENTS - HIGH GAIN ANTENNA
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23 - COMMUNICATIONS
23-28-00 COLLINS MCS SATCOM D/O
CONTENTS:
MCS SATCOM Presentation
Satellite Data Unit
High Power Amplifier
Beam Steering Unit
BITE
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
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COLLINS MCS SATCOM D/O
MCS SATCOM PRESENTATION
The MCS SATCOM supports DATA and VOICE communications
at a rate from 600 bits per second to 21 Kbits per
second.
The MCS SATCOM comprises:
- the Satellite Data Unit (SDU),
- the High Power Amplifier (HPA).
The SDU provides all essential services required to
accomodate effective air/ground communications, via
satellite, using the antenna and related RF components.
The SDU manages the RF link protocols on the satellite
side and provides the appropriate interface with
communication management avionics.
The HPA boosts the signal to be transmitted to the
satellite.
SATELLITE DATA UNIT
The SDU is the main processing element of the MCS
SATCOM avionics and provides Aircraft Earth Station
(AES) control and monitoring.
The SDU contains a maximum of 6 channels, 1 for
management data and 5 for user voice and data, capable
of providing simultaneous full duplex operation.
Depending on customer requests, these channels
support:
- cabin voice/data communications,
- cockpit voice communications,
- flight related data.
The SDU:
- controls timing functions,
- performs voice and data digitalizing,
- performs coding/decoding functions,
- defines system protocols,
- provides other system interfacing.
The SDU is connected to:
- the ADIRS to provide the Beam Steering Unit
(BSU) with relative azimuth and relative
elevation so that the High Gain Antenna (HGA)
can directly be pointed at the satellite for
optimum reception and transmission,
- the CFDIU for BITE,
- the ATSU when the VHF link with ground station
is not possible,
- the Laptop computer for data loading.
The RF signal is sent to the HPA through an attenuator
and received from the Diplexer/Low Noise Amplifier
(D/LNA).
L-band transmission frequency: from 1.6255 GHz to
1.6605 GHz
L-band reception frequency: from 1.530 GHz to 1.559
GHz.
HIGH POWER AMPLIFIER
The HPA is only used for signal transmission and
amplifies the SDU generated L-band signal to a power
level required for proper transmission to the
satellite. The power level is permanently adjusted in
order to minimize the satellite power consumption.
The linear HPA provides the required average output
power, 60 watts per channel, while passing multiple
signals without generating excessive
intermodulations. The HPA also monitors the BSU
activation depending on the satellite position.
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
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TMU23SD02-P01 LEVEL 3
COLLINS MCS SATCOM D/O
EFFECTIVITY 23-28-00 Page 3
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 23 COMMUNICATIONS
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COLLINS MCS SATCOM D/O
BEAM STEERING UNIT
　
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