DEU Aircraft Systems: Decode and Encode with DEU-A Type-A Unit Quiz and Flashcards

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What do the DEU-A units control in the aircraft?

Flight control systems

Pilot-related systems

Passenger-related systems (correct)

Engine-related systems

How many DEU-As are installed in the A380's baseline configuration?

192

85 (correct)

What connects the DEU-As to the DIRs?

CIDS data-bus (correct)

Hydraulic system

Electric wires

Aircraft power

Why are there two top line data buses on each side of the left, centre and right seat isles?

For redundancy purposes Signup and view all the answers

How are the installation addresses of DEU-As determined?

Through coding switches Signup and view all the answers

What is required to reconfigure the cabin layout in the CIDS?

A change to the software database Signup and view all the answers

Where are the cabin layout options loaded?

In the CAM Signup and view all the answers

What is found at the end connection box of each chain?

A Bus Termination Resistor (BTR) Signup and view all the answers

What is required to access the cabin layout selection function?

An access code Signup and view all the answers

Where can the cabin programming modes be accessed?

Both on the ground and in flight Signup and view all the answers

How can the system be reconfigured?

Through Field Loadable Software (FLS) Signup and view all the answers

What is the purpose of the BITE circuitry in the CIDS components?

To detect faults in the connected systems Signup and view all the answers

What is the purpose of the coding switches installed on each connection box?

To give the installation address of the DEU-B Signup and view all the answers

What happens if one connection box is not connected?

A related message is shown on the FAP/PIM and on the CMC/MCDU Signup and view all the answers

What is the function of the Forward Attendant Panel (FAP)?

To control and monitor the cabin support systems Signup and view all the answers

What is the purpose of the Bus Termination Resistor (BTR)?

To terminate the data bus Signup and view all the answers

What is the purpose of the DEU-B?

To control the various cabin systems such as ACP, AIP, AAP, Handsets, and EPSU Signup and view all the answers

What can be said about the DEU-Bs?

They are interchangeable Signup and view all the answers

What type of network connection does the CNS provide to the aircraft cabin?

High-speed communication connection based on standard ethernet Signup and view all the answers

What is the primary function of the Aircraft Network Server Unit (ANSU)?

To provide a common data file storage system for loadable software and other applications Signup and view all the answers

What is the purpose of the Data Communication Service?

To handle the communication between the end user and the aircraft network server system Signup and view all the answers

What type of devices can be connected to the CNS system?

Devices like laptops Signup and view all the answers

What is the interface between the ANSU and the ground network?

Terminal Wireless LAN Unit (TWLU) Signup and view all the answers

What type of switch is used to connect to ethernet LRUs in the Avionics Local Access Network (LAN)?

Ethernet switch Signup and view all the answers

What is the function of the antenna in the Cabin Network System?

To receive and transmit signals from wirelessly connected devices Signup and view all the answers

What is the data rate of the Cabin Connector?

Up to 100 Mbps Signup and view all the answers

Which system does the CNS interface with for landing gear control?

Landing Gear Control and Interface Unit Signup and view all the answers

What is the purpose of the Passenger Air-to-Ground Telephone System?

To allow passengers to fax documents during flight Signup and view all the answers

What is the function of the Satellite Data Unit in the PATS?

To interconnect with the Satellite Communication system Signup and view all the answers

What is the function of the fax machine in the PATS?

To establish voice and data connections to the public telephone network Signup and view all the answers

Study Notes

Aircraft Network Server Unit (ANSU)

Provides a common data file storage system for loadable software and other applications
Acts as a host platform for airline applications, processing, and network communication services
Interfaced with Terminal Wireless LAN Unit (TWLU) for ground network connection with the Cabin Network System (CNS) and cockpit connections for PC or printer installation

Data Communication Service

Handles communication between the end user and the aircraft network server system
Provides wireless Ethernet/email service, telephone, and fax facilities in the aircraft cabin area

Cabin Network System (CNS)

Supplies the aircraft cabin with a high-speed communication connection based on standard Ethernet (IEEE 802.3) and standard network protocols
Allows flight and cabin crew, passengers, and maintenance personnel to connect devices like laptops to the LAN
Antenna receives signals from devices wirelessly connected to the LAN and transmits signals to the CWLUs and vice versa

Cabin Connector

A wired network connection for the cabin crew with a data rate of up to 100 Mbps

Interface Systems of the Cabin Network System

Interfaces with:
- Forward Attendant Panel (FAP)
- In-Flight Entertainment System (IFE)
- Aircraft Information Network System (AINS)
- Landing Gear Control and Interface Unit (LGCIU)
- Cabin Telephone Unit (CTU)
- Centralised Maintenance Computer (CMC)

Passenger Air-to-Ground Telephone/Fax System (PATS)

Enables passengers and cabin crew to send faxes via the aircraft Satellite Communication (SATCOM) system
Performance is equivalent to usual office fax machines
Interconnects with the Satellite Data Unit (SDU) for worldwide FAX service

Decoder/Encoder Unit Type-A (DEU-A)

Interfaces with active DIR to control passenger-related systems
Interfaces with:
- Passenger Service Units (PSU)
- Lighted signs (FSB/NS/RTS)
- PAX-call lights
- Loudspeakers
- Cabin lighting
Number of DEU-As depends on cabin layout, installation of optional systems, and aircraft type
Interconnected with DIRs through CIDS data bus

Decoder/Encoder Unit Type-B (DEU-B)

Interfaces with active DIR and cabin-crew-related functions
Controls:
- Area Call Panels (ACP)
- Attendant Indication Panels (AIP)
- Additional Attendant Panels (AAP)
- Handsets
- Emergency Power Supply Unit (EPSU)
- Slide/door pressure sensors
- Drain mast heating monitoring

CIDS Cabin Layout Selection

Allows cabin layout reconfiguration through software database changes
No hardware changes required
Protected by access code and only available on the ground

Cabin Programming

Allows configuration of cabin zones through a dedicated programming page on the FAP
Available on ground or in flight
Protected by access code

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers the Decoder/Encoder Unit Type-A (DEU-A) in aircraft systems, focusing on its interface with active Directional Intelligence (DIR) and control of passenger-related systems. Learn about the inputs/outputs required and systems controlled by DEU-A.

Aircraft Systems: DEU-A Decoder/Encoder Unit Type-A