30 Questions
What is the primary function of the Avionics Standard-Communication Bus (ASCB)?
To enable communication between major subsystems of the avionics systems
What is the data transfer rate of the ASCB?
10 Mb/s
How are signal reflections prevented in the ASCB?
By using resistor terminations
What is the duration of each data frame transmitted in the ASCB?
12.5 ms
What is the purpose of the master network interface controller?
To control the transmission timing of data frames
What is the purpose of the transformer coupler in the bus coupler?
To isolate the buses and prevent short circuits
What is the primary function of the NIC in the MAU?
To transmit and receive ASCB and LAN data
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
What type of modules can be connected to the backplane bus through the BIC?
Processor, I/O, memory, or other hybrid modules
What is stored in the Aircraft Personality Modules (APMs)?
System identification data, options data, system settings data, and rigging data
What is the purpose of software firewalls in the MAU?
To protect the MAU from malicious data coming from other common applications
What data buses, networks, and components are used by the MAU for data processing and operations?
ASCB, LAN, CAN, and Controller Area Network
What is the function of the Propulsion/APU system?
Engine and APU fire detection and thrust reverser control
What is the primary purpose of ASCB terminators?
To absorb signals and prevent reflection
What is the primary function of the AIOP modules?
To collect data from avionic and flight control systems
What is a Modular Avionics Unit (MAU) in the Embraer 170/190?
A metal cabinet solidly grounded to the aircraft frame
What type of cable is used for the Local Area Network (LAN)?
Coaxial cable
How do the AIOP modules send position data to the servos?
Through a bidirectional CAN bus
What is the operating frequency of the Controller Area Network (CAN) bus?
500 kHz
What is the purpose of the Linear Variable Differential Transformers (LVDTs)?
To provide analogue feedback to the P-ACE system
How do the Independent LRMs in the A380 host different avionics applications?
They merge three to four aircraft systems and handle them individually
What is the purpose of the Local Area Network (LAN) in an avionics system?
For development, maintenance, and software loading
What is the function of the Core Processing Input/Output Modules (CPIOMs) in the A380?
To host independent avionics applications
What is the role of the Flight Guidance Control System (FGCS) in the autopilot system?
To provide yaw damper and turn coordination signals
What is the requirement for the AIOP modules in lane A and lane B?
They must operate at the same time
What is the purpose of the Input/Output Modules (IOMs) in the A380?
To connect to the conventional avionics systems
What protocol is used by the Local Area Network (LAN) in an avionics system?
TCP/IP
What component controls data transmission on the Local Area Network (LAN)?
The NIC
What is the function of the P-ACE system?
To perform analogue-to-digital conversion
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
This quiz covers the functionality of the NIC (Network Interface Controller) and its interaction with client modules in the MAU through the Backplane Interface Controller. It explains how the BIC frame buffer enables communication between the NIC and client modules.
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