DOC AIRBUS | AMM A320FPASSENGER ENTERTAINMENT - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The Passenger Entertainment System Music (PES Music) transmits pre-recorded audio programs to the passengers. The passengers can hear the audio programs through headsets, connected to the Passenger Control Units (PCU). Through the Cabin Intercommunication Data System (CIDS), the audio program is heard from the cabin Passenger Address (PA) loudspeakers as Boarding Music (BGM). The PES Music also transmits the video sound and the PA announcement sound to the passengers.
** ON A/C NOT FOR ALL The Passenger Entertainment System Music (PES Music) transmits pre-recorded audio programs to the passengers. The passengers can hear the audio programs through headsets, connected to the Passenger Control Units (PCU). Through the Cabin Intercommunication Data System (CIDS), the audio program is heard from the cabin Passenger Address (PA) loudspeakers as Boarding Music (BGM). The PES Music also transmits the video sound and the PA announcement sound to the passengers.
2. Component Location
Seat Equipment of the PES Music and Flight Attendant Panel (Audio page ) - Component Location ** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL Seat Equipment of the PES Music and Flight Attendant Panel (Audio page ) - Component Location ** ON A/C NOT FOR ALL | ------------------------------------------------------------------------------- |
| FIN I FUNCTIONAL DESIGNATION I PANEL I ZONE I ACCESS |
| I I I I |
| ------------------------------------------------------------------------------- |
| 8MK MAIN MULTIPLEXER 88VU 128 |
| 10MK AUDIO REPRODUCER 88VU 128 |
| 50MK WALL DISCONNETION BOX 200 |
| 100MK SEAT ELECTRONIC BOX 200 |
| 200MK PASSENGER CONTROL UNITS 200 |
| 201MK PASSENGER CONTROL UNITS 200 |
| 202MK PASSENGER CONTROL UNITS 200 |
| 203MK PASSENGER CONTROL UNITS 200 |
| 204MK REMOTE TRANSDUCER 200 |
| 800MK RELAY 2000VU 220 |
| 801MK RELAY 187VU 128 |
| 120RH ATTENDANT PANEL FORWARD 221 |
3. System Description
A. Description of the installed Systems
(1) BITE System
The BITE system is assembled into the IFE. The Cabin Intercommunication Data System (CIDS) (Refer to 23-73-00) commands the IFE to go into the BITE mode. All input audio channels at the Main Multiplexer (MM) 8MK are electronically isolated from an active processing. A 400 Hz test tone is put on each of the channels. At the Seat Electronic Box (SEB) 100MK/ Passenger Control Units (PCU) 200MK, 201MK, 202MK and 203MK all channels are examined for correct operation. Any failure data is transmitted back to the MM, the CIDS and the Central Fault Display System (CFDS) (Refer to 31-30-00).
The BITE system is assembled into the IFE. The Cabin Intercommunication Data System (CIDS) (Refer to 23-73-00) commands the IFE to go into the BITE mode. All input audio channels at the Main Multiplexer (MM) 8MK are electronically isolated from an active processing. A 400 Hz test tone is put on each of the channels. At the Seat Electronic Box (SEB) 100MK/ Passenger Control Units (PCU) 200MK, 201MK, 202MK and 203MK all channels are examined for correct operation. Any failure data is transmitted back to the MM, the CIDS and the Central Fault Display System (CFDS) (Refer to 31-30-00).
(2) PES Power Test
When the PES power is on, the BITE automatically starts. An ARINC 429 high-speed bus transfers data between the CIDS and the IFE.
When the PES power is on, the BITE automatically starts. An ARINC 429 high-speed bus transfers data between the CIDS and the IFE.
(3) Audio
Audio signals from the Audio Reproducer (A/R) 10MK, and video audio, supply a maximum of thirty audio channels to the MM. Circuits in the MM process this analog input and prepare it for the conversion to digital data. These are then sent to the SEB through the Wall Disconnect Boxes (WDB) 50MK.
Audio signals from the Audio Reproducer (A/R) 10MK, and video audio, supply a maximum of thirty audio channels to the MM. Circuits in the MM process this analog input and prepare it for the conversion to digital data. These are then sent to the SEB through the Wall Disconnect Boxes (WDB) 50MK.
(4) Audio Output
The SEB changes the MM digital audio back to its original analog form. This audio output is transmitted to the passenger headsets through the Passenger Control Units (PCU) 200MK, 201MK, 202MK and 203MK.
The SEB changes the MM digital audio back to its original analog form. This audio output is transmitted to the passenger headsets through the Passenger Control Units (PCU) 200MK, 201MK, 202MK and 203MK.
(5) Channels
The audio signals in the MM can give a stereophonic channel. One monophonic channel from the Audio Reproducer (A/R) is programmed as the left channel; the other monophonic channel is programmed as the right channel. Two monophonic channels give the effect of one stereophonic channel.
Four channels from the A/R can be used to provide boarding music over the loudspeakers in the cabin and in the lavatories.
The audio signals in the MM can give a stereophonic channel. One monophonic channel from the Audio Reproducer (A/R) is programmed as the left channel; the other monophonic channel is programmed as the right channel. Two monophonic channels give the effect of one stereophonic channel.
Four channels from the A/R can be used to provide boarding music over the loudspeakers in the cabin and in the lavatories.
(6) Boarding Music
Four channel nummbers can be used to provide the boarding music. The flight attendants control the boarding music on the Flight Attendant Panel (FAP) 120RH.
Four channel nummbers can be used to provide the boarding music. The flight attendants control the boarding music on the Flight Attendant Panel (FAP) 120RH.
(7) Passenger Address Audio
Three Passenger Address (PA) audio-inputs control all the IFE channels in each applicable aircraft zone. The CIDS controls the IFE mode and permits the use of the PA in each zone of the aircraft. The aircraft seat layout will have an effect on this system.
Three Passenger Address (PA) audio-inputs control all the IFE channels in each applicable aircraft zone. The CIDS controls the IFE mode and permits the use of the PA in each zone of the aircraft. The aircraft seat layout will have an effect on this system.
(8) Cabin Intercommunication Data System (CIDS) Interface (Ref. Fig. 002,005)
The ARINC 429 input data bus receives data from the CIDS directors. The ARINC 429 output data bus also sends data to the CIDS directors. In the Fig. 002 the CIDS has different functional interfaces. These are :
The ARINC 429 input data bus receives data from the CIDS directors. The ARINC 429 output data bus also sends data to the CIDS directors. In the Fig. 002 the CIDS has different functional interfaces. These are :
- Power ON/OFF,
- PA announcement control and seat layout data transfer to the IFE.
(a) ARINC 429 Output Data Port
The IFE output data has a BITE fault data. The CIDS directors send this data to the Center Fault Display System (CFDS) through the CIDS.
The IFE output data has a BITE fault data. The CIDS directors send this data to the Center Fault Display System (CFDS) through the CIDS.
(b) ARINC 429 Input Data Port
This port receives the CIDS data for the electrical location of seats (PA override and movie/video audio). All the necessary data is stored in the Cabin Assignment Module (CAM).
This port receives the CIDS data for the electrical location of seats (PA override and movie/video audio). All the necessary data is stored in the Cabin Assignment Module (CAM).
(9) IFE Data Lines
The MM controls two columns of seats on the aircraft. There are two data buses in each column. When one is used for the multiplexed digital audio, the other is used for service data.
The MM controls two columns of seats on the aircraft. There are two data buses in each column. When one is used for the multiplexed digital audio, the other is used for service data.
4. Power Supply
The PES Music is supplied with 115VAC through these circuit breakers:
** ON A/C NOT FOR ALL The PES Music is supplied with 115VAC through these circuit breakers:
- 21MK - PES/MUSIC/CTL
- 23MK - PES/MUSIC/CABIN/LH
- 24MK - PES/MUSIC/CABIN/RH.
5. Component Description
A. Installed Units FIN: 10-MK
(1) Main Multiplexer
(a) General
The Main Multiplexer (MM) 8MK is installed in the avionic compartment. The MM
10MK accepts audio programs that come from audio sources such as a music CD reproducer, video cassette player or passenger address (PA) system. The MM converts each analog audio signal from analog to digital first, and then multiplexes the digital data to convert them into serial data.
The Main Multiplexer (MM) 8MK is installed in the avionic compartment. The MM
10MK accepts audio programs that come from audio sources such as a music CD reproducer, video cassette player or passenger address (PA) system. The MM converts each analog audio signal from analog to digital first, and then multiplexes the digital data to convert them into serial data.
(b) Functional Description
1 Audio Input
A maximum of 33 input channels of analog audio is accepted at a time. Each analog audio signal is converted from analog to digital in the MM. The audio inputs are:
A maximum of 33 input channels of analog audio is accepted at a time. Each analog audio signal is converted from analog to digital in the MM. The audio inputs are:
- Twenty-four channels for passenger entertainment audio (22 in special mode)
- Six channels for video audio (8 in special mode)
- Three channels for PA audio.
2 Key Input
The key inputs activate the associated video audio or PA audio (announcement), and the MM operates in up to three (3) basic zones on aircraft. The key inputs are:
The key inputs activate the associated video audio or PA audio (announcement), and the MM operates in up to three (3) basic zones on aircraft. The key inputs are:
- Three video keys for video zones 1, 2 and 3
- Three PA keys for PA zones 1, 2 and 3.
3 PES Data Line
The MM usually transmits a maximum of 24 channels of audio program. One frame of PES data consists of 26 words, and each word is 13 bits long. Each frame begins with a synchronization word, and ends with a command word. The intermediate 24 words are the multiplexed audio signals. Each end of the PES data line should be terminated with a 68-ohm resistance.
The MM usually transmits a maximum of 24 channels of audio program. One frame of PES data consists of 26 words, and each word is 13 bits long. Each frame begins with a synchronization word, and ends with a command word. The intermediate 24 words are the multiplexed audio signals. Each end of the PES data line should be terminated with a 68-ohm resistance.
4 PSS Data Line
The PSS data contains information about:
The PSS data contains information about:
- Seat configuration
- Video configuration
- Channel assignment
- Attendant call
- Reading light
- SEB reset
- BITE result.
5 ARINC 429 Data Line
The data formats of the ARINC 429 data are based on the ARINC Specification 429. The CIDS director gives the seat configuration data and/or channel assignment data to the MM. The MM sends the attendant call, reading light and/or BITE results to the CIDS director.
The data formats of the ARINC 429 data are based on the ARINC Specification 429. The CIDS director gives the seat configuration data and/or channel assignment data to the MM. The MM sends the attendant call, reading light and/or BITE results to the CIDS director.
6 RS-232C Data Line
The MM has RS-232C data line. It is possible to download the seat configuration data, video configuration data and/or channel assignment data from a personal computer to the MM.
The MM has RS-232C data line. It is possible to download the seat configuration data, video configuration data and/or channel assignment data from a personal computer to the MM.
7 Tag Switches
The MM has the tag switches (SW1 through SW5) for the programming of channel assignment as follows:
The MM has the tag switches (SW1 through SW5) for the programming of channel assignment as follows:
- Twelve stereo tag switches for passenger entertainment audio
- Three bilingual tag switches for video audio
- Eighteen skip tag switches for no audio (skipped channels).
(c) Electrical connection(s)
The MM has two connections. The connections are:
The MM has two connections. The connections are:
1 J1
- Power
- Audio input and output
- Data input and output
2 J2
- Data input and output (to/from personal computer)
(a) General
The CD Audio Reproducer (A/R) 10MK is installed in the avionic compartment. The CD A/R contains four identical CD decks, and are numbered "No.A" thru "No.D". Each deck drives one CD. Up to two stereophonic channels or four monophonic channels provides each CD drive. The CD A/R gives up to 16 different music programs, from CDs, to the Main Multiplexer.
The CD Audio Reproducer (A/R) 10MK is installed in the avionic compartment. The CD A/R contains four identical CD decks, and are numbered "No.A" thru "No.D". Each deck drives one CD. Up to two stereophonic channels or four monophonic channels provides each CD drive. The CD A/R gives up to 16 different music programs, from CDs, to the Main Multiplexer.
(b) Control Elements
The CD A/R itself has the subsequent operation controls:
The CD A/R itself has the subsequent operation controls:
- A monitor jacks (monaural headset) for sound check
- A channel up and down pushbutton for channel selection
- A volume up and down pushbutton for volume selection
- A two-digit channel number display
- Four disk drive displays.
(3) Wall Disconnect Box
(a) General
The Wall Disconnect Box (WDB) 50MK gives a disconnect point for the data buses of the IFE. It supplies line amplification for the data buses. The buses from the MM are fed to the WDBs on each side of the aircraft.
The Wall Disconnect Box (WDB) 50MK gives a disconnect point for the data buses of the IFE. It supplies line amplification for the data buses. The buses from the MM are fed to the WDBs on each side of the aircraft.
(b) Electrical connection(s)
The WDB has four connections. The connections are:
The WDB has four connections. The connections are:
1 J1 (from MM or previous WDB)
- Power
- Data input and output
2 J2 (to SEB)
- Power
- Data input and output
3 J3 (to SEB)
- Power
- Data input and output
4 J4 (to next WDB)
- Power
- Data input and output
(4) Seat Electronic Box
(a) General
The SEB only changes the digital signals of the passenger selected channel back to the original analog form. These signals are transmitted to the PCU. Each SEB supplies up to 3 PCU.
The SEB only changes the digital signals of the passenger selected channel back to the original analog form. These signals are transmitted to the PCU. Each SEB supplies up to 3 PCU.
(b) Electrical connection(s)
The SEB has three connections. The connections are:
The SEB has three connections. The connections are:
1 J1 and J2 (connects to the next forward or aft SEB)
- Power
- Audio input
- Data input and output
2 J3 (connects to up to three PCU)
- Power
- Audio input
- Data input and output
- Power
- Data input and output
(a) General
The Passenger Control Units (PCU) 200MK, 201MK, 202MK, and 203MK are the primary interfaces between the passengers and the IFE. They are installed in the armrest of each passenger seat.
The Passenger Control Units (PCU) 200MK, 201MK, 202MK, and 203MK are the primary interfaces between the passengers and the IFE. They are installed in the armrest of each passenger seat.
(b) Control Elements
Each PCU has:
Each PCU has:
- A LED display (2 digit LED indicates the channel select)
- Up/Down pushbutton switch (channel select)
- +/- resp. Up/Down volume control membrane switches (volume decrease/increase)
- an electrical headset jack.
6. System Operation
A. Operation of the PES Music
(1) General
The Passenger Entertainment System (PES) is energized during normal operation
The Passenger Entertainment System (PES) is energized during normal operation
(2) Energization
The electrical power for the PES music is available when:
The electrical power for the PES music is available when:
- The busbars 220XP-A, 2210XP-B, 220XP-C are energized
- The circuit breakers 21MK, 23MK and 24MK are closed
- The relays 800MH and 801MH operate
- The AUDIO softkey is pushed (the AUDIO softkey is highlighted by colour change)
- The PES/ON/OFF softkey is pushed (the PES ON/OFF softkey is highlighted by colour change)
(3) Operation of the PCU control keys
The control keys are:
The control keys are:
- The CHANNEL membrane switch, with the left-pointing triangle
When that membrane switch is pushed, the channel number increases. - The CHANNEL membrane switch, with the right-pointing triangle
When that membrane switch is pushed, the channel number decreases. - 'VOLUME' membrane switch, with the plus symbol
When that membrane switch is pushed, the volume increases. - 'VOLUME' membrane switch, with the negative symbol
When that membrane switch is pushed, the volume decreases
(4) Boarding Music
The boarding music is controlled by the Flight Attendant Panel (FAP) 120RH (Ref. AMM D/O 23-32-00-00).
The boarding music is controlled by the Flight Attendant Panel (FAP) 120RH (Ref. AMM D/O 23-32-00-00).
(5) System Characteristics
The system characteristics are as follows:
The system characteristics are as follows:
(a) The frequency response, from 25 Hz to 15 kHz +/- 3 dB.
(b) The number of audio inputs, 33 maximum (max. 24 audio tape player, 6 movie/audio tape player, 3 PA override).
(c) The key lines, 3 video and 3 PA.
(d) The output level, 100 mW/ear minimum.
(e) The output impedance, 300 ohms.
(f) The number of selectable programs, a total of 18.
(g) The number of stereo/mono programs, 12/18 or combination.
(h) The signal-to-noise ratio, 75 dB.
(i) A stereo channel separation, 60 dB minimum.
(j) The harmonic distortion, 0.2 % maximum at 100 mW.
(k) A dynamic range, 75 dB minimum.
(l) The audio compression, switchable 20 dB on movie/video.