SATCOM Avionics Subsystem Overview
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Questions and Answers

What is the main function of the SATCOM avionics subsystem?

  • To transmit and receive data for cabin internet applications (correct)
  • To navigate the aircraft through airspace
  • To manage in-flight entertainment systems
  • To control the aircraft's engines

    • Which aircraft models are specifically mentioned in relation to the CMQ - SA family?

  • A340-300
  • A330-100/200
  • A330-200/300 (correct)
  • A320-200

    • What is indicated by 'D/O (3)' in the context of Satellite Communication?

  • Designated Operation, Version 3
  • Department of Operations 3
  • Data Output version 3 (correct)
  • Data Overhaul, 3rd edition

    • In which levels does the CMQ - SA family interface with the A330-200/300?

    <p>Level 2 and Level 3</p> Signup and view all the answers

    What type of applications does the SATCOM subsystem support?

    <p>Cabin internet-based applications</p> Signup and view all the answers

    What is the revision date mentioned for the training document related to the avionics subsystem?

    <p>June 01, 2019</p> Signup and view all the answers

    What engine type is associated with the A330-200/300 in the context provided?

    <p>RR Trent 700</p> Signup and view all the answers

    What role does the SATCOM avionics subsystem play in the communication systems of aircraft?

    <p>For cabin communication and data transfer</p> Signup and view all the answers

    What is the primary function of the cabin and flight crew interphone system?

    <p>To facilitate communication between cabin crew and cockpit</p> Signup and view all the answers

    Which aircraft families are mentioned in the context of the interphone functionalities?

    <p>A330-200/300</p> Signup and view all the answers

    What type of device can be used in the cockpit for communication with cabin crew?

    <p>Cockpit handset or acoustic device</p> Signup and view all the answers

    When was the document regarding the PA-CAB and service interphones functionalities last revised?

    <p>June 1, 2019</p> Signup and view all the answers

    What is one of the identified functionalities of the PA-CAB system?

    <p>Telephone communication</p> Signup and view all the answers

    What levels are indicated for the training associated with the A330-200/300 family?

    <p>Level 2 and Level 3</p> Signup and view all the answers

    What is the output impedance of the VDR transceiver?

    <p>50 Ohms</p> Signup and view all the answers

    Which engine type is associated with the A330-200/300 mentioned in the context?

    <p>Rolls Royce Trent 700</p> Signup and view all the answers

    What is the power supply voltage for the VDR transceiver?

    <p>28 VDC</p> Signup and view all the answers

    What is the purpose of the document that mentions PA-CAB & service interphones functionalities?

    <p>Training purposes</p> Signup and view all the answers

    Which frequency range does the VDR transceiver operate within?

    <p>118.000Mhz to 137.975Mhz</p> Signup and view all the answers

    What type of buses connect the VDR transceiver with the RMPs for tuning?

    <p>ARINC 429 buses</p> Signup and view all the answers

    What is the channel spacing in the frequency range of the VDR transceiver?

    <p>8.33 Khz</p> Signup and view all the answers

    How is the VDR transceiver powered?

    <p>Via 28 VDC</p> Signup and view all the answers

    Which of the following is NOT a system the VDR transceiver is linked to?

    <p>ELT transmitter</p> Signup and view all the answers

    What is the model of the engine associated with the A330-200/300?

    <p>RR Trent 700</p> Signup and view all the answers

    What does the CAM provide information about?

    <p>Cabin lights and temperature</p> Signup and view all the answers

    What indicates that the CABIN STATUS page is displayed on the screen?

    <p>The button turns green</p> Signup and view all the answers

    Which of the following does the hard key panel NOT include?

    <p>Temperature controls</p> Signup and view all the answers

    Which function is the PED POWER hard key associated with?

    <p>Turning Portable Electronic Device power on or off</p> Signup and view all the answers

    What is the purpose of the hard key panel?

    <p>To operate major functions independently from the FAP touch screen</p> Signup and view all the answers

    What do the No Smoking, Fasten Seat Belt, and Return To Seat signs indicate?

    <p>Passenger safety regulations</p> Signup and view all the answers

    What does the optional third flash card store?

    <p>Pre-Recorded Announcement and boarding music</p> Signup and view all the answers

    Which of the following is NOT a function of the hard key panel?

    <p>Communicating with pilots</p> Signup and view all the answers

    What happens to the button on the CABIN STATUS when it is not displayed?

    <p>It remains grey</p> Signup and view all the answers

    Where are the USB and headset plugs located?

    <p>On the hard key panel</p> Signup and view all the answers

    What is the purpose of the Tx signal in the satellite communication process?

    <p>To transmit signals from the antenna to the satellite</p> Signup and view all the answers

    What indication is shown when the call is established during the satellite communication process?

    <p>Connected indication displayed next to the channel</p> Signup and view all the answers

    What type of signal does the antenna convert from the L-band radio frequency signal?

    <p>IF Rx signal</p> Signup and view all the answers

    Which component relays the Rx signal to the RFU in the satellite communication setup?

    <p>D/LNA</p> Signup and view all the answers

    What happens to the green lines during the call establishment process?

    <p>They flash during the call establishment</p> Signup and view all the answers

    At what point does the SDU take action in the signal processing chain?

    <p>When routing received signals to the user</p> Signup and view all the answers

    What must be done first before the transmission of a call can occur in satellite communications?

    <p>Select the reception keys</p> Signup and view all the answers

    What provides feedback to the user regarding the call-processing stage?

    <p>Visual signals from the ACP</p> Signup and view all the answers

    What is the primary function of the AMU in relation to the VHF systems?

    <p>To serve as an interface for audio transmission and reception</p> Signup and view all the answers

    How does the VDR transceiver determine if the aircraft is in flight?

    <p>Using a signal from the LGCIU</p> Signup and view all the answers

    What happens when a transmission lasts more than 30 seconds?

    <p>The transceiver emits an aural warning for 5 seconds</p> Signup and view all the answers

    Which component is responsible for controlling radio communication transceivers?

    <p>RMP3</p> Signup and view all the answers

    What triggers the 'VHF1 EMITTING', 'VHF2 EMITTING', or 'VHF3 EMITTING' amber message on the EWD?

    <p>A transmission exceeding one minute</p> Signup and view all the answers

    What role does the ATSU play in relation to the VDR transceiver?

    <p>Facilitates the exchange of data between the A/C and ground systems</p> Signup and view all the answers

    When are the VDR transceivers typically tuned through port A?

    <p>During normal operation</p> Signup and view all the answers

    What does the Push-to-talk (PTT) key line signal to the transceivers?

    <p>A ground signal for communication</p> Signup and view all the answers

    Which type of audio signal is used in conjunction with the HFDR transceivers?

    <p>Analog lines</p> Signup and view all the answers

    What is the RF output power of the SSB mode in the HF transceiver?

    <p>400 W pep</p> Signup and view all the answers

    Which of the following frequency ranges is classified as 'wide' for the HF transceiver?

    <p>1.0000 to 29.9999 MHz</p> Signup and view all the answers

    What type of labels are used in the serial tuning words dedicated to HFDR transceivers?

    <p>Label 037</p> Signup and view all the answers

    What is indicated by aural tone when the HF transceiver is out of range?

    <p>Out-of-range selection</p> Signup and view all the answers

    Which of the following contains information about the sign/status and parity in the HF transceiver?

    <p>The second 32-bit tuning word</p> Signup and view all the answers

    What is the average tune power output for AM mode in the HF transceiver?

    <p>125 W</p> Signup and view all the answers

    What label is transmitted by the HF BITE for maintenance purposes?

    <p>Label 356</p> Signup and view all the answers

    What communication method does the High Frequency (HF) system primarily facilitate?

    <p>Long distance voice communications between aircraft</p> Signup and view all the answers

    Which statement accurately describes the function of the Emergency Locator Transmitter System?

    <p>It aids in locating an aircraft during an emergency</p> Signup and view all the answers

    Which of the following systems utilizes the Panasonic brand mentioned in the document?

    <p>In-Flight Entertainment System</p> Signup and view all the answers

    What type of communication does the VHF system primarily support?

    <p>Voice communication to ground stations and nearby aircraft</p> Signup and view all the answers

    What aspect of the Cockpit Voice Recording System is highlighted in the manual?

    <p>Continuous recording of cockpit sounds without interruption</p> Signup and view all the answers

    What does the term 'D/O (3)' denote in the context of the systems mentioned?

    <p>Documented Overview and Specifications</p> Signup and view all the answers

    Which communication systems are indicated to allow for communications on both ground and in flight?

    <p>HF and VHF systems</p> Signup and view all the answers

    What functionality is associated with the Cabin Intercommunication Data System?

    <p>Facilitating crew communication within the cabin</p> Signup and view all the answers

    Which PRIMARY function does the in-flight entertainment system serve?

    <p>Deliver entertainment options to passengers</p> Signup and view all the answers

    What is the main purpose of the Technician notes marked as 'FOR TRAINING PURPOSES ONLY'?

    <p>To facilitate the training and knowledge of system functionalities</p> Signup and view all the answers

    Which characteristic of the LGA indicates its ability to receive signals from all directions?

    <p>Omnidirectional nature</p> Signup and view all the answers

    What is the primary function of the splitter in the LGA system?

    <p>To distribute the Tx signal</p> Signup and view all the answers

    Which statement accurately describes the limitations of the LGA system?

    <p>It cannot ensure high-rate data transmission.</p> Signup and view all the answers

    What component is involved in combining the Rx signals before they reach the RFU?

    <p>The combiner</p> Signup and view all the answers

    What does the LGA system allow in case of a failure of the high gain antenna subsystem?

    <p>Low rate data transmission</p> Signup and view all the answers

    Which of the following best describes the adjustment capabilities of the LGA?

    <p>The LGA is fixed and non-adjustable.</p> Signup and view all the answers

    How does the LGA interact with the BSU according to its design?

    <p>The LGA operates independently without needing a BSU.</p> Signup and view all the answers

    In the context of the LGA system, what does the term 'D/LNAs' refer to?

    <p>Downlink and Low Noise Amplifiers</p> Signup and view all the answers

    What indicates that a call is being established during the SATCOM process?

    <p>Flashing green lines</p> Signup and view all the answers

    Which component is responsible for demodulating and decoding the Rx signal in the satellite communications process?

    <p>SDU</p> Signup and view all the answers

    What must be selected prior to establishing a satellite communication call?

    <p>Reception keys</p> Signup and view all the answers

    Which frequency signal is converted into an IF Rx signal during satellite communication?

    <p>L-band radio frequency signal</p> Signup and view all the answers

    After receiving a signal from the satellite, which component routes the signal to the concerned user?

    <p>SDU</p> Signup and view all the answers

    What action occurs once the Tx signal reaches the antenna during the satellite communication process?

    <p>It is amplified and sent to the satellite.</p> Signup and view all the answers

    Which component relays the received signal to the RFU in the satellite communication setup?

    <p>D/LNA</p> Signup and view all the answers

    What happens to the signal once the call is established according to the satellite communication process?

    <p>It becomes steady.</p> Signup and view all the answers

    What data does the ORT table contain within the SDU programming?

    <p>Information on all ground stations in each satellite region</p> Signup and view all the answers

    Which aspect does the SDU evaluate when selecting a ground station?

    <p>Quality of the received signal based on strength and/or bit error rate</p> Signup and view all the answers

    What type of information is conveyed by the electronic bulletin board sent from the ground station?

    <p>System table information along with other operational data</p> Signup and view all the answers

    What initiates the log-in procedure for satellite communication?

    <p>User activation on the MCDU SATCOM Menu</p> Signup and view all the answers

    During the log-in, what action does the SDU perform after testing the ground stations?

    <p>Automatically selects the ground station with the best signal quality</p> Signup and view all the answers

    Which of the following best describes the log-in command function on the MCDU SATCOM Menu?

    <p>It begins the process of registering with the chosen ground station</p> Signup and view all the answers

    What happens at the end of the signal quality testing by the SDU?

    <p>The SDU determines the best quality signal ground station for the log-in</p> Signup and view all the answers

    What role does the SDU play in the satellite communication log-in process?

    <p>It acts as an intermediary between the aircraft and the satellite system</p> Signup and view all the answers

    What functionality is primarily controlled by the LIGHTS MAIN ON/OFF function in the cabin intercommunication data system?

    <p>Switching the main cabin lights on or off</p> Signup and view all the answers

    What does the SCREEN 30 sec LOCK feature do within the Flight Attendant Panel?

    <p>Locks the touch function of the screen for 30 seconds</p> Signup and view all the answers

    Which component serves as the main user interface with the Cabin Intercommunication Data System?

    <p>Flight Attendant Panel</p> Signup and view all the answers

    What is the purpose of the LAV MAINT function in the cabin intercommunication data system?

    <p>To switch lavatory lights on</p> Signup and view all the answers

    How does the Flight Attendant Panel assist in overall cabin management?

    <p>By serving as the main communication interface with other systems</p> Signup and view all the answers

    What functionality does the cabin intercommunication data system NOT provide?

    <p>Navigation assistance for emergency landings</p> Signup and view all the answers

    Which system is responsible for locking the touch functionality on the screen for 30 seconds?

    <p>Flight Attendant Panel</p> Signup and view all the answers

    What can be inferred about the functionalities entailed in 'D/O (3)' for the cabin intercommunication data system?

    <p>It indicates specific operating standards for cabin communications</p> Signup and view all the answers

    Study Notes

    A330-200/300 Differences from A318/A319/A320/A321

    • Training manual only, not for other purposes
    • Notes are not updated

    CFM56/V2500 Training Manual

    • Communications manual only for training
    • Not for any other use
    • Notes not updated

    Speech Communication

    • HF D/O (3) (2)
    • VHF D/O (3) (10)
    • Satellite Communication D/O (3) (18)

    CIDS

    • PA-CAB & Service Interphones Functionalities (2) (30)
    • Cabin Intercommunication Data System D/O (3) (36)
    • Emergency Locator Transmitter - ATA 25 (86)
    • Emergency Locator Transmitter System D/O (CEIS) (3) (92)
    • Emergency Locator Transmitter System D/O (ELTA) (3) (96)
    • In-flight Entertainment System (96)
    • IFE System Functionalities D/O (Panasonic) (3) (102)
    • IFE System D/O (Panasonic) (3) (120)
    • IFE System D/O (Thales) (3) (136)
    • Cockpit Voice Recording D/O (3) (162)

    HF D/O (3) - General

    • High Frequency (HF) system for long distance voice communication between aircraft (in-flight or ground) or between aircraft and ground station
    • Comprised of 2 HFDR transceivers, 2 HFDR couplers and a shunt-type antenna

    HF D/O (3) - Main Components

    • HFDR 1/2 transceivers
    • HFDR 1/2 coupler (impedance matching between antenna and transceiver)
    • HF shunt-type antenna
    • Radio Management Panels (RMPs)
    • Audio Management Unit (AMU)
    • Audio Control Panels (ACPs)
    • Acoustic equipment (2 side-stick radio selectors, 2 loudspeakers, 3 oxygen mask microphones, facilities for boomsets, headsets, hand microphones)

    HF D/O (3) - System Architecture

    • RMPs for HF1 and HF2 frequency control
    • HFDR transceivers with two serial input ports (A and B)
    • Port A for normal operation; secondary port for RMP2 if RMP1 and RMP3 fail
    • RMP3 controls radio communications via dialog bus
    • AMU acts as a user interface for transmission/reception of audio signals using a push-to-talk (PTT) key
    • Selective Calling (SELCAL) provides visual & aural indication to the flight crew of calls received through HF system
    • ACPs for HF transmission/reception selection mode and audio signal level control via AMU
    • BITE integrated in HF transceiver for maintenance
    • BITE maintains 2-way comms with Central Maintenance Computers (CMCs) via ARINC 429 buses; detects/identifies failures
    • LGCIU sends flight/ground status to notify HF BITE (fault memory increment in case of CMC failure)

    HF D/O (3) - Frequencies and Characteristics

    • RF output power: SSB 400 W peak, 125 W average, AM 125W, 72-85 W average
    • Impedance 50 Ohms
    • Frequency range: 2000-29999 MHz (wide), 2800–23999 MHz (narrow)
    • Tone alert for out-of-range selection

    VHF D/O (3) - General

    • VHF system allows short-range voice communications between aircraft (in flight or ground) or between aircraft and ground station
    • It comprises three VDR transceivers and three blade antennae

    VHF D/O (3) - Main Components

    • VDR 1/2/3 transceivers
    • VHF antennae
    • Radio Management Panels
    • Audio Management Unit
    • Audio Control Panels
    • Acoustic equipment (2 side-stick radio push-to-talk, 2 loudspeakers, 3 oxygen mask microphones, facilities for boomsets, headsets and microphones)

    VHF D/O (3) - System Architecture

    • RMPs for control of VDR 1/2/3 frequency
    • VDR transceiver with two serial input ports (A&B)
    • Port A used for normal operation
    • Port B activated if RMP1/RMP3 are failed
    • AMU interfaces with users for transmission/reception of audio signals
    • ACP for control of VHF transmission and reception; audio signal level control via AMU
    • BITE for maintenance

    Satellite Communication D/O (3) - General

    • SATCOM system provides satellite communication for cockpit and cabin
    • Supports voice and data communications
    • Two subsystems: avionics & antenna
    • Avionics subsystem consists of SDU, HSDU, RFU and HPA
    • Antenna subsystem consists of D/LNA, BSU and HGA

    Satellite Communication D/O (3) - Avionics Subsystem Details

    • SDU—Satellite Data Unit
    • HSDU—High Speed Data Unit (optional)
    • RFU—Radio Frequency Unit
    • HPA—High Performance Amplifier

    Satellite Communication D/O (3) - Antenna Subsystem Details

    • D/LNA—Diplexer/Low Noise Amplifier
    • BSU—Beam Steering Unit
    • HGA—High Gain Antenna

    Satellite Communication D/O (3) - Interfaces

    • A/D/IRS—Air Data/Inertial Reference System
    • A/T/IMS—Air Traffic and Information Management System
    • PATS—Passenger Air-to-ground Telephone System

    Satellite Communication D/O (3) - Description

    • SDU—Key processing element, controls and monitors satellite communications
    • Performs voice & data digitizing, coding/decoding
    • Connects to AMU, ATSU, MCDUs, ADIRUs, DLRB and CMCs
    • Contains a maximum of 6 channels for simultaneous, full duplex operation
    • Optional HSDU splits/combines RF reception/transmission with SDU

    Emergency Locator Transmitter (ELT)

    • Transmits distress signals (automatic or manually)
    • Operates on three frequencies for civil/military homing and satellite systems
    • Stores distress signal (while not in range to user terminal) to a local user terminal
    • Local terminal receives signal in a radius of 2,500 km (1367 NM)
    • Identifies aircraft location and transmits coordinates to rescue coordination, and/or mission, center
    • Identifies aircraft location within a radius of 1.8km (5,900 ft.)

    In-Flight Entertainment

    • System is interactive and integrated
    • Offers passenger entertainment features
    • Basic functions include audio and video broadcast, on-demand audio/video, interactive utilities (games, internet) and passenger address and information display systems in conjunction with other systems (e.g. PFIS, TACS)

    Cockpits Voice Recording

    • Records cockpit crew conversations
    • Records radio comms
    • Records PA announcements
    • Records crew warnings
    • Records in-cockpit conversations

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    Related Documents

    A330-200/300 Communications Training Manual PDF

    Description

    This quiz explores the functions and specifics of the SATCOM avionics subsystem, particularly in relation to the CMQ - SA family and its implementation in the A330-200/300 aircraft models. Test your knowledge on key terms, applications, and system interfaces as they relate to aircraft communication technologies.

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