Aviation Electronics: Discrete Inputs and Audio Signals

What type of signals are sent via a discrete connection?

Audio signals

What is the function of the Landing Gear Control and Interface Unit (LGCIU)?

To control the landing gear

Which system does the type-A Decoder/Encoder Unit (DEU-A) serve?

Passenger-related systems

What is the purpose of the Engine Interface and Vibration Monitoring Unit (EIVMU)?

To monitor engine vibration Signup and view all the answers

What type of inputs/outputs are discretes?

Single-wire Signup and view all the answers

What system uses discrete and audio signals to link with various units?

Data Interface and Recorder (DIR) Signup and view all the answers

What is the primary function of the Additional Attendant Panel (AAP)?

To activate EVAC and indication, and to reset the system Signup and view all the answers

What type of data bus is used in the AAP to send and receive data?

RS 232 (serial half duplex) Signup and view all the answers

What is the purpose of the BITE system in the AAP?

To detect internal and external failures Signup and view all the answers

What is the power supply voltage for the Attendant Indication Panel (AIP)?

28V DC Signup and view all the answers

How many characters are displayed in each row of the AIP's display area?

16 Signup and view all the answers

What is the purpose of the Attendant Indication Panel (AIP)?

To display alphanumerical messages Signup and view all the answers

What system is used to monitor and report the status of the aircraft on the ground and in flight?

Central Maintenance System (CMS) Signup and view all the answers

What system does the CIDS interface with to display the levels of potable and wastewater tanks?

Vacuum System Signup and view all the answers

What is controlled by the no-smoking on/auto/off switch in the cockpit?

No Smoking (NS) Signs Signup and view all the answers

What system is used to control music, video, and games at each passenger seat?

In-Flight Entertainment (IFE) system Signup and view all the answers

What is controlled by the passenger service control functions?

All of the above Signup and view all the answers

What signs are controlled by the passenger lighted-signs system?

No Smoking (NS), Fasten Seat Belt (FSB), Return to Seat (RTS) and EXIT Signs Signup and view all the answers

What information is provided to passengers via display units?

Real-time video and audio details of the countries along the flight path Signup and view all the answers

What is the main computer of the PVIS?

Processor Unit (Digital Interface Unit or DIU) Signup and view all the answers

What data does the Processor Unit calculate?

All of the above and more Signup and view all the answers

What is installed to provide additional cabin control and monitoring functions?

Cabin Passenger Information network Signup and view all the answers

What type of interfaces does the Processor Unit have?

Data bus interfaces with Flight Management Guidance and Envelope Computer (FMGEC) Signup and view all the answers

What feature is available on the fax machine?

Credit card reader Signup and view all the answers

What type of information is displayed on the Airshow windows?

Maps with the aircraft flight course, airport gate maps, and other related details Signup and view all the answers

What connects the telephone system to the Satellite Communication System?

Passenger Entertainment System Controller (PESC) and the Cabin Telecommunication Unit (CTU) Signup and view all the answers

What is the function of the System Control/Interface Module?

To transmit, receive and process data and signal information between the bearer system and the fax terminal Signup and view all the answers

What information is provided to passengers through the Passenger Entertainment System (PES) video display units?

Aircraft position data on maps and aircraft status data as text Signup and view all the answers

Where are the modes of Airshow operation set from?

Cabin Management Terminal (CMT) Signup and view all the answers

What type of data is provided to passengers through the Passenger Visual Information System (PVIS)?

Flight status and aircraft position data Signup and view all the answers