M5/B2 DATA BUSES

What is the purpose of the label field in an ARINC 429 word?. To identify the type of data. To indicate the source of power. To define the transmission time.

An ARINC data word uses bits 11-29. If bits 11-18 are patched, which of the following would be the LSB bit?. 21. 19. 29.

An ARINC 429 bus is constructed by: A single twisted and shielded wire pair and is bidirectional. A single twisted and shielded wire pair and is unidirectional. Two twisted and shielded wire pairs that are both bidirectional.

What is ARINC 561 used for?. Flight Data Recorder systems. Fly by Wire systems. Inertial Navigation Systems.

What differentiates ARINC 629 from ARINC 429?. Uses analog modulation. No requirement for timing control. Multiple transmitters can share the bus.

ARINC 573 is designed for use with: Weather radar. Inertial Navigation System (INS). Flight Data Recorder (FDR).

Which ARINC system uses a self-clocking data format?. ARINC 429. ARINC 573. ARINC 561.

What system uses base 8?. ARINC 573. ARINC 629. ARINC 429 in dataword labels only.

How many sources can ARINC 429 support on one bus?. One. Twenty. Five.

Which of the following is true about ARINC 629 stub cables?. They are used for power supply. They connect the LRU to the bus using a mode coupler. They serve as the main transmission medium.

Which ARINC system is designed to support multiple LRUs transmitting without data collision?. ARINC 429. ARINC 573. ARINC 629.

How is data coupled to an ARINC 629 data bus?. By a capacitive pickup. By an inductive pickup. By a resistive pickup.

The ARINC 429 specification describes: A bi-directional 16 bit communication architecture. A communication system with a word length of 32 bits. A uni-directional analogue data transfer communication system.

An ARINC 629 stub cable: Connects single directional data between the LRU and current mode coupler. Connects bi-directional data between the LRU and current mode coupler. Connects bi-directional data between two LRUs.

The bus protocol in an ARINC 629 system will: allow multiple LRU's to transmit a message at the same time because multiplexing is used. allow multiple LRUs to transmit using the same word string. control the time at which each LRU transmits a message so that it does not interfere with other LRU messages.

What is the function of a label in ARINC 429?. It connects to a power supply. It identifies the data type or function. It sets the transmission frequency.

How many bits are in a standard ARINC 429 data word?. 20. 32. 16.

An ARINC 629 bus cable is a twisted pair of wires with: 130 ohm resistor at one end. 230 ohm resistor at one end. 130 ohm resistor at both ends.

The modulation technique used in ARINC 429 is: NRTZ. bi-polar RTZ. BCD.

What is the typical data rate of high-speed ARINC 429?. 10 kbit/s. 1 Mbit/s. 100 kbit/s.

What does ARINC stand for?. Aircraft Radio Interconnected Network Cable. Aerospace Radio Interface Channel. Aeronautical Radio Incorporated.

What type of parity is used in ARINC 429?. Even parity. No parity. Odd parity.

What is the role of SSM in ARINC 429?. To synchronize messages. To provide status information. To define word length.

What is the function of parity in ARINC 429?. Synchronization. Data rate control. Error detection.

ARINC 429 has: 20 sources and one sink. one source with up to 20 sinks. 5 sources with 20 sinks.

ARINC 629 is used for: A backup to ARINC 429. Emergency only. Normal flight.

An ARINC 629 data word: has only 20 bits. includes an 8 bit label and 16 bit data field. comprises up to 256 data bits.

An aircraft data bus system: Can use both ARINC 629 and ARINC 429 as they are compatible. Can use both systems ARINC 629 and ARINC 429 via system card files and signal gateways. Cannot use both ARINC 629 and ARINC 429 data buses.

Errors are normally detected in an ARINC 429 system using: even parity with the least significant bit as the parity bit. odd parity with the most significant bit as the parity bit. a status matrix SSM.

In an ARINC 429 word string, bits 1-8 represent: The monitored parameter. The source of the message. The destination LRU.