Integrated Modular Avionics in Embraer 170/190
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Questions and Answers

What is the primary function of the Bus Interface Controller (BIC) in the MAU board?

  • To program system identification data in the Aircraft Personality Modules
  • To transmit and receive ASCB and LAN data
  • To protect the MAUs from malicious data with software firewalls
  • To connect client modules to the backplane bus through a dual-port RAM (correct)
  • What type of memory is used in the Bus Interface Controller (BIC) frame buffer?

  • Sequential Access Memory
  • Cache Memory
  • Random Access Memory (correct)
  • Read-Only Memory
  • What is the purpose of the Aircraft Personality Modules (APMs) in the NIC modules?

  • To manage the power supply to the MAU
  • To store system identification data, options data, system settings data, and rigging data (correct)
  • To control the flow of data between the NIC and client modules
  • To provide a secure boot mechanism for the MAU
  • What is the primary function of the software firewalls in the MAU?

    <p>To protect the MAU from malicious data originating from other applications</p> Signup and view all the answers

    What is the primary purpose of the ADCN implementing a redundant network with both network A and B?

    <p>To ensure that a data path is still established in the event of a switch failure</p> Signup and view all the answers

    What type of data bus is used in the MAU for data processing and operations?

    <p>Avionics Standard-Communication Bus (ASCB) and Local Area Network (LAN) bus</p> Signup and view all the answers

    What is the function of the ASCB coupler in the MAU?

    <p>To terminate the ASCB data bus</p> Signup and view all the answers

    What happens when a subscriber receives two identical data frames from network A and B?

    <p>The subscriber rejects one of the frames and uses the other</p> Signup and view all the answers

    What is the function of the auto-switching system in the ADCN network?

    <p>To automatically switch to a redundant network in the event of a failure</p> Signup and view all the answers

    What is the purpose of the Avionics Standard-Communication Bus (ASCB) in AIOP modules?

    <p>To collect data from avionic and flight control systems</p> Signup and view all the answers

    What type of connector is used in the core processing input/output modules?

    <p>ARINC 600 connector</p> Signup and view all the answers

    What is the function of the Linear Variable Differential Transformers (LVDTs)?

    <p>To provide analogue feedback to the Primary Actuator Control Electronics (P-ACE) System</p> Signup and view all the answers

    What is the role of the Flight Control Module (FCM) in the autopilot system?

    <p>To receive yaw damper and turn coordination signals from the FGCS</p> Signup and view all the answers

    What is the primary benefit of the ADCN network's redundant design?

    <p>Improved network reliability and fault tolerance</p> Signup and view all the answers

    What is the purpose of the Controller Area Network (CAN) bus in the autopilot system?

    <p>To transmit digital feedback data from the P-ACE System to the AIOP modules</p> Signup and view all the answers

    What is the significance of the two AIOP modules in each channel?

    <p>They have the same software but perform separate and complementary functions</p> Signup and view all the answers

    What is the relationship between the AIOP modules in lane A and lane B?

    <p>They must operate at the same time for the servos in that channel to be active and engaged</p> Signup and view all the answers

    What is the primary function of the Modular Avionics Unit (MAU) in the Embraer 170/190 aircraft?

    <p>To host independent applications and supply an input/output interface service</p> Signup and view all the answers

    What is the purpose of the Line Replaceable Modules (LRM) in the Modular Avionics Unit (MAU)?

    <p>To make contact with a virtual backplane bus for power and communication</p> Signup and view all the answers

    What is the advantage of having two independent processing systems (channels) in each MAU?

    <p>To provide redundancy in the event of a failure</p> Signup and view all the answers

    How do the Modular Avionics Units (MAU) connect to the aircraft system wiring?

    <p>Through the front connectors on the LRM</p> Signup and view all the answers

    What is the purpose of the backplane in the MAU?

    <p>To make contact with a virtual backplane bus for power and communication</p> Signup and view all the answers

    What is the physical structure of the Modular Avionics Unit (MAU)?

    <p>A metal cabinet solidly grounded to the aircraft frame</p> Signup and view all the answers

    What is the primary function of ASCB terminators?

    <p>To absorb signals to prevent reflection</p> Signup and view all the answers

    What type of cable is used in the Local Area Network (LAN)?

    <p>Thin coaxial cable</p> Signup and view all the answers

    What is the frequency of operation of the Controller Area Network (CAN) bus?

    <p>500 kHz</p> Signup and view all the answers

    What protocol is used in the Local Area Network (LAN)?

    <p>TCP/IP</p> Signup and view all the answers

    What is the purpose of the Local Area Network (LAN)?

    <p>For development, maintenance and software loading</p> Signup and view all the answers

    What device controls data transmission on the Local Area Network (LAN)?

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

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