DOC AIRBUS | AMM A320FPASSENGER INFORMATION SYSTEM - DESCRIPTION AND OPERATION
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1. General
The Passenger Visual Information System (PVIS) supplies the passengers with visual information on the video displays during flight. Flight data, airline logo and an estimate of the flight arrival time is shown to the passengers on the Passenger Entertainment System (PES) video display units.
These video pictures can include:
** ON A/C NOT FOR ALL The Passenger Visual Information System (PVIS) supplies the passengers with visual information on the video displays during flight. Flight data, airline logo and an estimate of the flight arrival time is shown to the passengers on the Passenger Entertainment System (PES) video display units.
These video pictures can include:
- real-time details of the flight course
- details of the in-flight services.
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Component Location3. -
** ON A/C NOT FOR ALL | FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 190MH | DIGITAL INTERFACE UNIT (DIU) | 88VU | 120 | 23-34-34 | |
4. System Description
A. The PVIS uses the PES (video) to transmit its output data to the passengers as visual information.
(1) System Integration
The system receives its operational input data from the Air Traffic Service Unit (ATSU), the Air Data/Inertial Reference System (ADIRS), the Centralized Fault Display System (CFDS) and the Flight Management and Guidance System (FMGS).
The Digital Interface Unit (DIU) (190MH) is the primary component of the PVIS.
The System Control Unit (SCU) (11MH) of the PES (video) (Ref. AMM D/O 23-36-00-00) controls the PVIS. You can make a selection of the available menus with the SCU. The menu data is then shown on the passenger display units.
The DIU is the primary computer of the PVIS. It is installed on the electronics rack 88VU in the avionics compartment. The DIU receives the input data from the SCU and the related systems. It processes the video signals of the stored menus and the digital input data. Then it transmits the video signals to the PES (video) for the visual information on the display units.
B. Inputs from other Systems
The DIU receives data from these aircraft systems:
This information can be available to the passengers:
** ON A/C NOT FOR ALL A. The PVIS uses the PES (video) to transmit its output data to the passengers as visual information.
(1) System Integration
The system receives its operational input data from the Air Traffic Service Unit (ATSU), the Air Data/Inertial Reference System (ADIRS), the Centralized Fault Display System (CFDS) and the Flight Management and Guidance System (FMGS).
The Digital Interface Unit (DIU) (190MH) is the primary component of the PVIS.
The System Control Unit (SCU) (11MH) of the PES (video) (Ref. AMM D/O 23-36-00-00) controls the PVIS. You can make a selection of the available menus with the SCU. The menu data is then shown on the passenger display units.
The DIU is the primary computer of the PVIS. It is installed on the electronics rack 88VU in the avionics compartment. The DIU receives the input data from the SCU and the related systems. It processes the video signals of the stored menus and the digital input data. Then it transmits the video signals to the PES (video) for the visual information on the display units.
B. Inputs from other Systems
The DIU receives data from these aircraft systems:
- the Air Data/Inertial Reference System (ADIRS)
- the Flight Management and Guidance System (FMGS)
- the Centralized Fault Display System (CFDS)
- the Air Traffic Service Unit (ATSU).
- label 203, altitude
- label 204, baro corrected altitude
- label 205, mach number
- label 210, true air speed
- label 213, static air temperature
- label 215, impact pressure
- label 246, corrected average static pressure.
- label 314, true heading
- label 321, drift angle
- label 322, flight path
- label 333, body normal acceleration
- label 361, inertial altitude.
- label 001, distance to go
- label 002, time to go
- label 012, ground speed
- label 075, aircraft gross weight
- label 252, remaining descent time to destination
- label 253, remaining time to top of climb
- label 254, remaining time to top of descent
- label 255, next cruise flight
- label 260, date
- label 310, aircraft present position latitude
- label 311, aircraft present position longitude.
- label 040, city pair
- label 125, GMT
- label 126, flight phase
- label 233, flight number
- label 260, date
- label 301, aircraft identification.
This information can be available to the passengers:
- the aircraft ground speed
- the aircraft altitude
- the outside air temperature
- the position latitude
- the position longitude
- the wind speed
- the wind direction
- the time to destination airport.
5. Power Supply
The PVIS is supplied with 28VDC through these circuit breakers:
** ON A/C NOT FOR ALL The PVIS is supplied with 28VDC through these circuit breakers:
- 20MH - PES/VIDEO/CONTROL/MAIN
- 189MH - PES/PVIS
The circuit breakers 189MH and 20MH are installed on the circuit breaker panel 2000VU near the FWD purser station.
6. Component Description
A. Installed Components
B. The Digital Interface Unit
The DIU is the computer for the PVIS. It is installed in an ARINC 404A 1/2 ATR short case. On the front plate of the DIU is a handle bar, a cover for the CD-ROM drive and identification plates. On the rear plate are the electrical connectors for the intersystem communication data transfer and the power supply.
The DIU brings the subsequent digital data into relation:
The DIU is the computer for the PVIS. It is installed in an ARINC 404A 1/2 ATR short case. On the front plate of the DIU is a handle bar, a cover for the CD-ROM drive and identification plates. On the rear plate are the electrical connectors for the intersystem communication data transfer and the power supply.
The DIU brings the subsequent digital data into relation:
- the data received from other aircraft systems
- the control data from the SCU (PES (video))
- the data stored in the DIU memory (CD-ROM).
In reaction to the menu selection, the DIU calculates the digital output data and then changes the digital data into video signals. The video signals are sent to the PES (video) for passenger information.
The memory of the DIU can be renewed or updated with the data from the files on the CD-ROM. The CD-ROM can hold configuration files, place name overlays for maps or data bases on airport identifiers, time zones and other data.
7. Operation/Control and Indicating
A. Operation of the Passenger Information System
(1) General
The electrical power for the PVIS is available when:
The electrical power for the PVIS is available when:
- the busbars 212PP is energized,
- the circuit breakers 20MH and 189MH are closed,
- the relay 801MH operates,
- the PES Video is energized.
(2) System Start-up
On the DIU all cable connections for the power supply, to the other systems and the SCU are made through the connector on its rear plate.
When the DIU is energized the computer and its circuit boards perform an initialization procedure and a self test. After the self test a signal is generated for the SCU of the PES (video) that the system is ready for operation.
When the PES (video) is ready for operation (Ref. AMM D/O 23-36-00-00) its SCU is also ready for menu selections in relation to the PVIS.
On the DIU all cable connections for the power supply, to the other systems and the SCU are made through the connector on its rear plate.
When the DIU is energized the computer and its circuit boards perform an initialization procedure and a self test. After the self test a signal is generated for the SCU of the PES (video) that the system is ready for operation.
When the PES (video) is ready for operation (Ref. AMM D/O 23-36-00-00) its SCU is also ready for menu selections in relation to the PVIS.
(3) System Operation
To control the PVIS operations the selection of the AIRSHOW MENU is necessary on the SCU of the PES (video) (Ref. AMM D/O 23-36-00-00).
The selections in the menu and sub-menus send signals to the DIU (PVIS).
The DIU relates its memory contents with the input data from the other connected systems and the menu reqiurements. It then produces the digital output data for the passengers. This digital output data is transformed into video signals in the form of pictures or alphanumeric information. The PES (video) shows these video signals as maps and/or as written information to the passengers.
To control the PVIS operations the selection of the AIRSHOW MENU is necessary on the SCU of the PES (video) (Ref. AMM D/O 23-36-00-00).
The selections in the menu and sub-menus send signals to the DIU (PVIS).
The DIU relates its memory contents with the input data from the other connected systems and the menu reqiurements. It then produces the digital output data for the passengers. This digital output data is transformed into video signals in the form of pictures or alphanumeric information. The PES (video) shows these video signals as maps and/or as written information to the passengers.
(a) These sub-menus are in the AIRSHOW MENU:
- SET DISPLAY MODE
- SET LANGUAGE
- SET DESTINATION
- SET TTD.
1 In the sub-menu SET DISPLAY MODE are these sub-menus:
- PROFILE
- AUTO
- MAP
- LOGO.
2 In the sub-menu SET LANGUAGE are these sub-menus:
- Y ENGLISH
(the Y stands for the selection of this language (YES)) - N FRENCH
- N SPANISH.
3 In the sub-menu SET DESTINATION are i.e. these sub-menus:
- LAX
- SFO
- ORG.
4 In the sub-menu SET TTD:
- the Time To Destination (TTD) can be set.
(b) Each menu and sub-menu page also shows how a next selection can be made.