MAU Boards and Backplane Interface Controller

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What is the primary function of the Avionics Standard-Communication Bus (ASCB)?

To provide power to the avionics systems

To enable communication between major subsystems of the avionics systems (correct)

To isolate the onside primary and onside backup buses

To control the transmission timing of data frames

What is the data transfer rate of the ASCB?

1000 Mb/s

10 Mb/s (correct)

1 Mb/s

100 Mb/s

How are signal reflections prevented in the ASCB?

By using a repeater

By using a singleshielded twisted pair of wires

By using resistor terminations (correct)

By using a transformer coupler

What is the duration of each data frame transmitted in the ASCB?

12.5 ms Signup and view all the answers

What is the purpose of the master network interface controller?

To control the transmission timing of data frames Signup and view all the answers

What is the purpose of the transformer coupler in the bus coupler?

To isolate the buses and prevent short circuits Signup and view all the answers

What is the primary function of the NIC in the MAU?

To transmit and receive ASCB and LAN data Signup and view all the answers

What is the purpose of the Bus Interface Controller (BIC) frame buffer?

To provide a dual-port RAM for data exchange between NIC and client modules Signup and view all the answers

What type of modules can be connected to the backplane bus through the BIC?

Processor, I/O, memory, or other hybrid modules Signup and view all the answers

What is stored in the Aircraft Personality Modules (APMs)?

System identification data, options data, system settings data, and rigging data Signup and view all the answers

What is the purpose of software firewalls in the MAU?

To protect the MAU from malicious data coming from other common applications Signup and view all the answers

What data buses, networks, and components are used by the MAU for data processing and operations?

ASCB, LAN, CAN, and Controller Area Network Signup and view all the answers

What is the function of the Propulsion/APU system?

Engine and APU fire detection and thrust reverser control Signup and view all the answers

What is the primary purpose of ASCB terminators?

To absorb signals and prevent reflection Signup and view all the answers

What is the primary function of the AIOP modules?

To collect data from avionic and flight control systems Signup and view all the answers

What is a Modular Avionics Unit (MAU) in the Embraer 170/190?

A metal cabinet solidly grounded to the aircraft frame Signup and view all the answers

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

Coaxial cable Signup and view all the answers

How do the AIOP modules send position data to the servos?

Through a bidirectional CAN bus Signup and view all the answers

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

500 kHz Signup and view all the answers

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

To provide analogue feedback to the P-ACE system Signup and view all the answers

How do the Independent LRMs in the A380 host different avionics applications?

They merge three to four aircraft systems and handle them individually Signup and view all the answers

What is the purpose of the Local Area Network (LAN) in an avionics system?

For development, maintenance, and software loading Signup and view all the answers

What is the function of the Core Processing Input/Output Modules (CPIOMs) in the A380?

To host independent avionics applications Signup and view all the answers

What is the role of the Flight Guidance Control System (FGCS) in the autopilot system?

To provide yaw damper and turn coordination signals Signup and view all the answers

What is the requirement for the AIOP modules in lane A and lane B?

They must operate at the same time Signup and view all the answers

What is the purpose of the Input/Output Modules (IOMs) in the A380?

To connect to the conventional avionics systems Signup and view all the answers

What protocol is used by the Local Area Network (LAN) in an avionics system?

TCP/IP Signup and view all the answers

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

The NIC Signup and view all the answers

What is the function of the P-ACE system?

To perform analogue-to-digital conversion Signup and view all the answers

What is a characteristic of the Integrated Modular Avionics System on the A380?

Independent LRMs merge three to four aircraft systems and handle them individually Signup and view all the answers