Data Buses and Electric Power in Aircraft Systems

<p>Processing data sequentially as it arrives (B)</p> Signup and view all the answers

<p>2 to 5 V (A)</p> Signup and view all the answers

<p>They must be exact to avoid errors. (C)</p> Signup and view all the answers

<p>Bits transferred one after another over the same line (A)</p> Signup and view all the answers

<p>Long-distance communication (D)</p> Signup and view all the answers

<p>To issue commands and manage data transfers on the bus (B)</p> Signup and view all the answers

<p>Flight Management Computer (A)</p> Signup and view all the answers

<p>By issuing digital commands that request specific data (B)</p> Signup and view all the answers

<p>Mode commands for control and management of the bus (B)</p> Signup and view all the answers

<p>The remote terminal responds with the requested data after processing (A)</p> Signup and view all the answers

<p>Binary data representing various aircraft parameters (B)</p> Signup and view all the answers

<p>Strictly regulates the type of words transmitted across the bus (A)</p> Signup and view all the answers

<p>It displays the digitized information provided by the Bus Controller (C)</p> Signup and view all the answers

<p>32-bit words (C)</p> Signup and view all the answers

<p>Hexadecimal Representation (C)</p> Signup and view all the answers

<p>It identifies the data type and associated parameters. (A)</p> Signup and view all the answers

<p>It conveys information about data sign and status. (B)</p> Signup and view all the answers

<p>As octal numbers (A)</p> Signup and view all the answers

<p>ARINC itself (D)</p> Signup and view all the answers

<p>Single twisted and shielded pair of wires (A)</p> Signup and view all the answers

<p>It encodes alphanumeric inputs into binary numbers. (C)</p> Signup and view all the answers

<p>To facilitate bidirectional data movement and supply power to current-mode couplers (A)</p> Signup and view all the answers

<p>Two parts: Transmit personality PROM and Receive personality PROM (D)</p> Signup and view all the answers

<p>130 Ω (D)</p> Signup and view all the answers

<p>A group of word strings each starting with a label word followed by data words (D)</p> Signup and view all the answers

<p>31 word strings (B)</p> Signup and view all the answers

<p>A Terminal Gap (TG) (A)</p> Signup and view all the answers

<p>Begins with a label word and contains up to 256 data words (D)</p> Signup and view all the answers

<p>Teflon (D)</p> Signup and view all the answers

<p>To ensure compatibility across various aircraft models (C), To reduce the overall manufacturing costs for suppliers (D)</p> Signup and view all the answers

<p>20 (A)</p> Signup and view all the answers

<p>It is a simplex data bus (D)</p> Signup and view all the answers

<p>Data can only be transmitted in one direction (C)</p> Signup and view all the answers

<p>Bipolar return to zero (C)</p> Signup and view all the answers

<p>Manufacturers can produce standardized components for various aircraft (A)</p> Signup and view all the answers

<p>It operates within a speed range of 12 to 100 kb (B)</p> Signup and view all the answers

<p>Reduced compatibility between different aircraft models (A), Higher manufacturing costs due to specialized components (D)</p> Signup and view all the answers

<p>They provide a digital output, removing the need for A/D and D/A converters. (A)</p> Signup and view all the answers

<p>It is considered outdated compared to modern digital avionics installations. (C)</p> Signup and view all the answers

<p>It repeats the requirements of MIL-STD-1553 nearly word-for-word. (A)</p> Signup and view all the answers

<p>It is unchanged and remains consistent with wire conductors. (D)</p> Signup and view all the answers

<p>Altitude, humidity, temperature, and age affect fibre optics differently than wire conductors. (B)</p> Signup and view all the answers

<p>Pulses are defined as changes between off and on for fibre optics. (B)</p> Signup and view all the answers

<p>Ensuring the efficiency and operation of aviation and travel industry systems. (A)</p> Signup and view all the answers

<p>Both maintain identical data encoding and word formats, with minor differences. (C)</p> Signup and view all the answers

The component that controls data transmission over a digital data bus.

The digital communication pathway for transferring data between components.

Instructions sent by the Bus Controller to peripheral systems.

Components that are connected to the data bus, like the Air Data Computer (ADC) or EFIS.

Moving data from one device to another through the data bus.

Commands used by the BC to manage and control the data bus.

A device connected to the data bus that receives or sends data based on BC's commands.

Computer that often contains the Bus Controller function.

A voltage between 0 and 0.8 volts represents a binary 0 in digital systems.

A voltage between 2 and 5 volts represents a binary 1 in digital systems.

Digital systems allow for a range of voltages to represent a value (e.g., 2-5V for a 1), while analog systems require precise voltages.

A clock pulse synchronizes the transmitter and receiver in data transfer, controlling the timing of data bits.

Data bits are transferred sequentially (one after another) over a single line.

Data bits are sent simultaneously over multiple lines.

Serial data transmission uses less hardware and space compared to parallel transfer, making it suitable for long-distance transmission.

A widely used digital data transmission standard in modern transport aircraft. It standardizes the communication between avionics equipment.

A data bus where information flows in only one direction, from transmitter to multiple receivers.

It allows for interoperability between avionics systems from different manufacturers, reducing costs and increasing efficiency.

ARINC 429 uses a simplex bus with one transmitter and multiple receivers, while 1553 allows for bidirectional data flow.

Uses bipolar return to zero (RZ) encoding, where a positive or negative pulse represents a bit.

Each message is 32 bits long, allowing for a variety of information to be transmitted.

Operates at either 12 to 14.5 kbps or 100 kbps, balancing data speed with certification requirements.

Standardized communication allows manufacturers to create standard products, reducing production costs and increasing compatibility.

Data transmitted over ARINC 429 bus, used in avionics systems. Includes numerical, discrete, and alphanumeric data.

A 32-bit word structure used for data transmission. It includes a label, SSM (Sign/Status Matrix), and parity.

The first 8 bits of a word, identifying the data type and parameters.

Sign/Status Matrix. Indicates sign, status, and other flags within the data word.

A single bit used for error detection. Ensures data integrity during transmission.

Different formats for representing data: BCD (Binary Coded Decimal), Two's Complement, BNR (Binary Notation), Discrete Data, Maintenance Data, Acknowledgment, and ASCII.

American Standard Code for Information Interchange - used to represent alphanumeric characters in ARINC 429 data.

Data is transmitted over a single twisted and shielded pair of wires.

A military standard for digital data bus communication in avionics systems, utilizing a central Bus Controller and multiple Remote Terminals.

A standard for digital data bus communication in commercial aircraft, replacing MIL-STD-1553 due to its adoption of digital outputs.

A standard that specifies the use of fiber optic cabling for MIL-STD-1553B bus protocol, using light to transmit data.

Fiber optic cables offer benefits like high bandwidth, immunity to electromagnetic interference, and better signal integrity compared to traditional wire cables.

Transmits data using pulses that are defined as transitions between 'on' and 'off' states, unlike voltage transitions in MIL-STD-1553.

Aeronautical Radio Inc. (ARINC) specializes in developing and operating systems for the aviation and travel industry, focusing on communication and data management.

Small analog sensors can incorporate a microprocessor to produce a digital output, eliminating the need for analog-to-digital converters (ADCs).

Modern avionics systems increasingly produce digital outputs, leading to the adoption of digital data bus standards like ARINC and phasing out older ones like MIL-STD-1553.

A cable connecting an LRU (Line Replaceable Unit) to the current-mode coupler. It carries bidirectional data and power for the LRU.

Unique data that defines the function and operation of an LRU, stored in the personality PROMs (XPP for Transmit and RPP for Receive).

The main data highway for data transfer between LRUs. It's a pair of twisted wires with termination resistors to prevent signal reflections.

A structured block of data transmitted over the ARINC 629 bus. It contains a label and data words, allowing LRUs to select and read the message.

The time gap between ARINC 629 messages, allowing LRUs to process the data.

A group of words in an ARINC 629 message, starting with a label word and containing multiple data words.

A unit of data in an ARINC 629 message, containing information about specific parameters.

The process of transmitting data between LRUs using the ARINC 629 protocol. It involves creating messages, sending them over the data bus, and receiving them by other LRUs.