DOC AIRBUS | AMM A320FANNOUNCEMENT - MUSIC TAPE REPRODUCER SYSTEM - DESCRIPTION AND OPERATION
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1. General
The function of the Prerecorded Announcement and Boarding Music (PRAM) Reproducer 10RX is to play prerecorded messages. It also plays boarding music programs on a cassette tape to the passengers through the aircraft passenger address system. The PRAM is controlled by the audio module, which is a part of the Fwd Attnd panel 120RH. It is installed in the cabin at the forward attendant station. The PRAM and the audio module are connected with two ARINC 429 data buses. They go through the Cabin Intercommunication Data System (CIDS) director (Ref. AMM D/O 23-73-00-00) to receive and transmit control data.
The function of the Prerecorded Announcement and Boarding Music (PRAM) is to play prerecorded announcement and music programs. The announcement and music programs are transmitted to the passengers, through the passenger address system, which is a part of the Cabin Intercommunication Data System (CIDS). The PRAM is controlled from the Flight Attendant Panel (FAP) 120RH. The FAP 120RH is installed in the cabin, at the forward attendant station. The PRAM is connected with ARINC 429 data buses to the CIDS director, to transmit and receive control data.
** ON A/C NOT FOR ALL The function of the Prerecorded Announcement and Boarding Music (PRAM) Reproducer 10RX is to play prerecorded messages. It also plays boarding music programs on a cassette tape to the passengers through the aircraft passenger address system. The PRAM is controlled by the audio module, which is a part of the Fwd Attnd panel 120RH. It is installed in the cabin at the forward attendant station. The PRAM and the audio module are connected with two ARINC 429 data buses. They go through the Cabin Intercommunication Data System (CIDS) director (Ref. AMM D/O 23-73-00-00) to receive and transmit control data.
The function of the Prerecorded Announcement and Boarding Music (PRAM) is to play prerecorded announcement and music programs. The announcement and music programs are transmitted to the passengers, through the passenger address system, which is a part of the Cabin Intercommunication Data System (CIDS). The PRAM is controlled from the Flight Attendant Panel (FAP) 120RH. The FAP 120RH is installed in the cabin, at the forward attendant station. The PRAM is connected with ARINC 429 data buses to the CIDS director, to transmit and receive control data.
2. Component Location
Component Location ** ON A/C NOT FOR ALL
Component Location in the Flight Attendant Panel (FAP) ** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL Component Location ** ON A/C NOT FOR ALL Component Location in the Flight Attendant Panel (FAP) ** ON A/C NOT FOR ALL | FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 117RH | I-PRAM, CF-CARD | 221 | 23-32-36 | ||
| ** ON A/C NOT FOR ALL | |||||
| 120RH | FAP | 221 | 23-73-12 | ||
| ** ON A/C NOT FOR ALL | |||||
| 10RX | RPDR-ANNOUNCE/MUSIC | 88VU | 128 | 23-32-34 | |
3. System Description
A. Detailed description of the installed Announcement System
(1) Prerecorded Announcement and Boarding Music Reproducer
The Prerecorded Announcement and Boarding Music (PRAM) Reproducer 10RX is installed in the avionics compartment in a 4 MCU (ARINC 600) box.
It has one tape deck for boarding music reproduction. Prerecorded announcements are stored in EPROM memory chips. The memory chips have a capacity to store up to 18 minutes and 8 seconds prerecorded announcements.
The PRAM has the capability to produce an emergency announcement in the event of rapid cabin decompression. The emergency announcement is stored in an EPROM memory chip. A ground signal from a rapid decompression sensor triggers the emergency announcement.
All functions are remotely controlled from the audio module in the Fwd Attnd panel 120RH.
The Prerecorded Announcement and Boarding Music (PRAM) Reproducer 10RX is installed in the avionics compartment in a 4 MCU (ARINC 600) box.
It has one tape deck for boarding music reproduction. Prerecorded announcements are stored in EPROM memory chips. The memory chips have a capacity to store up to 18 minutes and 8 seconds prerecorded announcements.
The PRAM has the capability to produce an emergency announcement in the event of rapid cabin decompression. The emergency announcement is stored in an EPROM memory chip. A ground signal from a rapid decompression sensor triggers the emergency announcement.
All functions are remotely controlled from the audio module in the Fwd Attnd panel 120RH.
(2) Prerecorded Announcement and Boarding Music Reproducer
The integrated pram flash-card is installed on the FAP 120RH. The prerecorded announcements and the boarding-music are stored in the integrated pram-flash card. All functions are remotely controlled on the FAP 120RH. When the announcement system operates, a PRE ANNOUNCEMENT message is shown on the ON ANNOUNCE field at the FAP-AUDIO page. The integrated PRAM transmits manually selected announcements and an automatic emergency announcement if a rapid cabin decompression occurs.
The integrated pram flash-card is installed on the FAP 120RH. The prerecorded announcements and the boarding-music are stored in the integrated pram-flash card. All functions are remotely controlled on the FAP 120RH. When the announcement system operates, a PRE ANNOUNCEMENT message is shown on the ON ANNOUNCE field at the FAP-AUDIO page. The integrated PRAM transmits manually selected announcements and an automatic emergency announcement if a rapid cabin decompression occurs.
(3) The tape deck for boarding music reproduction has four channels. This allows a maximum playtime of 120 minutes per C-60 cassette.
(4) The audio module in the Fwd Attnd panel 120RH controls the prerecorded announcements and the Boarding Music (BGM). The reproducer and Fwd Attnd panel have two ARINC 429 data bus lines (transmit and receive bus) controlled through the CIDS (Ref. AMM D/O 23-73-00-00).
(5) The prerecorded announcement section of the audio module has four 3 digit LED displays, a READY light (if lit, reproducer is ready to play back the next announcement) and a numeric keyboard with pushbutton switches as follows:
- START NEXT
- START ALL
- STOP
- CLEAR
- ENTER
(6) The boarding music section (BGM channel) has:
One LED display (a row of LEDs indicate volume control), and pushbutton switches as follows:
One LED display (a row of LEDs indicate volume control), and pushbutton switches as follows:
- an ON/OFF pushbutton switch,
- a SEL pushbutton switch (channel select),
- a ( - ) pushbutton switch (volume decrease),
- a ( + ) pushbutton switch (volume increase).
4. Power Supply
115VAC is supplied to the PRAM from the sheddable busbar 220XP-A through the circuit breaker 2RX.
The Integrated Pram-Flash Card is supplied with 28VDC from:
** ON A/C NOT FOR ALL 115VAC is supplied to the PRAM from the sheddable busbar 220XP-A through the circuit breaker 2RX.
The Integrated Pram-Flash Card is supplied with 28VDC from:
- The busbar 401PP through the circuit breaker 171RH installed on panel 49VU.
- The busbar 601PP through the circuit breaker 170RH installed on panel 120VU.
5. Interface
The prerecorded announcement and boarding music system has interfaces with these systems:
** ON A/C NOT FOR ALL The prerecorded announcement and boarding music system has interfaces with these systems:
- The Cabin Intercommunication Data-System (CIDS) (Ref. AMM D/O 23-73-00-00)
- The Oxygen Control and Indication (Ref. AMM D/O 35-23-00-00)
- The Passenger Entertainment-System Music (PESC Music) (Ref. AMM D/O 23-33-00-00).
- The Cabin Intercommunication Data-System (CIDS) (Ref. AMM D/O 23-73-00-00)
- The Oxygen Control and Indication (Ref. AMM D/O 35-23-00-00)
- The Passenger Entertainment-System Music (PES Music) (Ref. AMM D/O 23-33-00-00).
6. Component Description
A. PRAM
(1) Announcement
EPROM memory chips are installed to give announce playback with direct access. The memory chips are reprogrammable.
The PRAM has the function to give an emergency announcement automatically in the event of rapid cabin decompression. The emergency announcement is stored in an EPROM memory chip. A ground signal from a rapid cabin decompression sensor starts the emergency announcement.
EPROM memory chips are installed to give announce playback with direct access. The memory chips are reprogrammable.
The PRAM has the function to give an emergency announcement automatically in the event of rapid cabin decompression. The emergency announcement is stored in an EPROM memory chip. A ground signal from a rapid cabin decompression sensor starts the emergency announcement.
(2) Boarding-Music
The tape deck for boarding music reproduction has four channels. This permit a maximum playtime of 120 minutes per C-60 cassette.
The tape deck for boarding music reproduction has four channels. This permit a maximum playtime of 120 minutes per C-60 cassette.
(3) The announcement and the boarding music are stored on a compact flash card. The compact flash card has three files. They are necessary to describe the structure for the announcement, the boarding music and the auto-announcement.
You can change the announcement and boarding music, when you install a new software on the compact flash card. The download of the new software from the compact flash card starts automatically when the FAP is energized.
You can change the announcement and boarding music, when you install a new software on the compact flash card. The download of the new software from the compact flash card starts automatically when the FAP is energized.
(4) The PRAM has the function to give an emergency announcement automatically in the event of rapid cabin decompression. A signal from a rapid cabin-decompression sensor starts the emergency announcement.
B. Defined System Characteristics
(1) The frequency response, from 50 to 10,000 Hz +/- 3 dBm for boarding music outputand 50 to 4,000 Hz +/- 3 dBm for solid state announcement output.
(2) The signal-to-noise ratio, 60 dBm minimum.
(3) The harmonic distortion, less than 1 % maximum (1 kHz/0 dBm).
(4) The wow and flutter, less than 0.15 % weighted (WRMS) per IEEE standard 193-1971.
(5) The output level, announcement and boarding music 0 dBm (1mW into 600 Ohm load) per ARINC 539A, adjustable from 0 dBm to -21 dBm. Emergency announcement output level +6 dBm nominal.
(6) The access time is less than 1 second for access to announcements and emergency announcement.
(7) The power consumption of less than 75 W average with 115 V AC - 400 Hz.
(8) An interface connector ARINC 600 size 1.
C. AUDIO Page
The AUDIO Page is a part of the Flight Attendant Panel (FAP).
The AUDIO Page is a part of the Flight Attendant Panel (FAP).
(1) The integrated PRAM is operated through the AUDIO page. You can start the AUDIO page through the audio pushbutton. After the start of the function, three different pages can come into view:
(a) WAIT UNTIL INITIALIZATION HAS BEEN COMPLETED:
- PRAM is in initialization routine.
(b) NO PRERECORDED AUDIO AVAILIABLE CHECK PRAM:
- Operation not possible (e.g. PRAM is not supplied with power, data bus interrupted).
(c) The announcement selection box shows.
(2) Announcement Selection box
The announcement selection box contains all the existing announcements readable from the integrated-pram flash card.
The announcement selection box contains 7 buttons:
The announcement selection box contains all the existing announcements readable from the integrated-pram flash card.
The announcement selection box contains 7 buttons:
(a) PREVIOUS PAGE:
- On the announcement selection box field, you scroll up one page, which shows the visible entries.
(b) NEXT PAGE:
- On the announcement selection box field, you scroll down one page, which shows the visible entries.
(c) INCREASE ENTRY:
- On the announcement selection box field, you scroll up only one entry.
(d) OPEN/CLOSE:
- The marked folder opens or closes.
(e) SELECT MEMO:
- Selected announcement/folder is marked in a contrast color.
(f) DIRECT PLAY:
- The announcement plays directly after of the selection.
(3) Memo-Box
The memo-box contains all announcements, which are selected from the announcement-selection box.
The memo-box contains 7 buttons:
The memo-box contains all announcements, which are selected from the announcement-selection box.
The memo-box contains 7 buttons:
(a) INCREASE ENTRY:
- On the memo-box field you scroll up only one entry.
(b) DECREASE ENTRY:
- On the memo-box field you scroll down only one entry.
(c) CLEAR ALL:
- You delete all entries in the memo-box.
(d) STOP:
- The current announcement stops.
(e) START NEXT:
- The selected entry in the memo-box plays.
(f) START ALL:
- All entries listed in the memo-box play one after each other. The order is from the top to the bottom of the memo-box.
(g) ON ANNOUNCE field:
- An ON ANNOUNCE field on the FAP audio-page shows the current announcement. Only one title for each announcement is shown in the ON ANNOUNCE field. A discrete announcement is displayed by a special text (e.g. AUTO).
(4) Boarding-Music Control Facilities at the FAP
The boarding music control equipment is as follows:
The boarding music control equipment is as follows:
- A boarding music (BGM) aircraft symbol on the left side of the FAP AUDIO page, with the BGM channel and -volume
- A row of ten bar graphs, to indicate the set VOLUME level
- An ON/OFF pushbutton switch with an integral light
- An up and down membrane-pushbutton, to set the music channel
- An up pushbutton, to increase the volume level
- A down pushbutton, to decrease the volume level.
D. Attendant Indication Panels (AIP)
(1) The PRAM control equipment is as follows:
- There is a PRE ANNOUNCEMENT message, at all attendant indication panels, when the announcement system operates.
7. System Operation
A. System Start
When the circuit breaker for the FAP is closed, the integrated PRAM system is energized.
You can push the AUDIO pushbutton, to activate the operator menu on the LCD-display.
During the initialization time these indications are possible:
When the circuit breaker for the FAP is closed, the integrated PRAM system is energized.
You can push the AUDIO pushbutton, to activate the operator menu on the LCD-display.
During the initialization time these indications are possible:
(1) If the integrated PRAM is in the normal initialization routine the display shows:
- WAIT UNTIL INITIALIZATION HAS BEEN COMPLETED
(2) If communication to PRAM is not possible or initialization time is exceeded, the display shows:
- NO PRERECORDED AUDIO AVAILABLE - CHECK PRAM
(3) If the initialization is completed, the display shows the AUDIO menu.
B. Control Keys
The Prerecorded Announcement and Boarding Music (PRAM) system is controlled during normal operation from the audio module in the Fwd Attnd panel 120RH. The system initialization is made automatically when the reproducer receives 115 V AC. During the initialization the LED display on the audio module is not shown. The least significant digit LED of the announcer display will show '0' when the initialization is complete. The operation procedures to program and release the announcements are as follows:
The Prerecorded Announcement and Boarding Music (PRAM) system is controlled during normal operation from the audio module in the Fwd Attnd panel 120RH. The system initialization is made automatically when the reproducer receives 115 V AC. During the initialization the LED display on the audio module is not shown. The least significant digit LED of the announcer display will show '0' when the initialization is complete. The operation procedures to program and release the announcements are as follows:
(1) ENTER
When the ENTER pushbutton is pushed, the cursor moves into the MEMO 1 position.
The required message is keyed-in on the keyboard and appears on the MEMO 1 display. When the ENTER pushbutton is pushed, the keyed-in data is accepted.
The READY light comes on when the PRAM has found the corresponding announcement.
The required messages for the MEMO 2 and MEMO 3 displays are keyed-in the same as for the MEMO 1 display.
When the ENTER pushbutton is pushed, the cursor moves into the MEMO 1 position.
The required message is keyed-in on the keyboard and appears on the MEMO 1 display. When the ENTER pushbutton is pushed, the keyed-in data is accepted.
The READY light comes on when the PRAM has found the corresponding announcement.
The required messages for the MEMO 2 and MEMO 3 displays are keyed-in the same as for the MEMO 1 display.
(2) CLEAR
When the cursor has moved into the related position (MEMO 1, MEMO 2 or MEMO 3) and the CLEAR pushbutton switch is pushed, the display clears.
When the cursor has moved into the related position (MEMO 1, MEMO 2 or MEMO 3) and the CLEAR pushbutton switch is pushed, the display clears.
(3) START NEXT
When the START NEXT pushbutton switch is pushed the message shown on the MEMO 1 display moves up to the 'ON ANNOUNCE' display. The MEMO 2 display message then moves up to the MEMO 1 display. The message shown on the MEMO 3 display moves up to the MEMO 2 display.
When the START NEXT pushbutton switch is pushed the message shown on the MEMO 1 display moves up to the 'ON ANNOUNCE' display. The MEMO 2 display message then moves up to the MEMO 1 display. The message shown on the MEMO 3 display moves up to the MEMO 2 display.
(4) START ALL
All messages keyed on MEMO 1, MEMO 2 and MEMO 3 will be announced continuously until the last announcement has finished (number 0). In this continuous mode, it can add another message for announcement after the messages that you have keyed-in.
All messages keyed on MEMO 1, MEMO 2 and MEMO 3 will be announced continuously until the last announcement has finished (number 0). In this continuous mode, it can add another message for announcement after the messages that you have keyed-in.
(5) STOP
When the STOP pushbutton switch is pushed, the message announcement stops immediately.
When the STOP pushbutton switch is pushed, the message announcement stops immediately.
C. Boarding Music Control Keys
(1) ON/OFF
When the ON/OFF pushbutton switch is pushed, the light in the pushbutton switch comes ON. The channel 1 is automatically displayed on the BGM channel display. When the ON/OFF pushbutton is pushed again, the light goes OFF.
When the ON/OFF pushbutton switch is pushed, the light in the pushbutton switch comes ON. The channel 1 is automatically displayed on the BGM channel display. When the ON/OFF pushbutton is pushed again, the light goes OFF.
(2) SEL
When the SEL pushbutton switch is pushed, the system selects one of the available channels.
These are displayed in a numerical ascending code (four channels in the mono mode, two in the stereo mode).
When the SEL pushbutton switch is pushed, the system selects one of the available channels.
These are displayed in a numerical ascending code (four channels in the mono mode, two in the stereo mode).
(3) VOLUME
The LEDs on the volume display show the volume level (2 dB steps).
The LEDs on the volume display show the volume level (2 dB steps).
(4) ( - )
When the (-) pushbutton switch is pushed the volume level decreases.
When the (-) pushbutton switch is pushed the volume level decreases.
(5) ( + )
When the (+) pushbutton switch is pushed the volume level increases.
When the (+) pushbutton switch is pushed the volume level increases.
8. DLH Special Mode of Operation
A. Announcement Operation
(1) Choose an announcement in the Announcement-Selection Box on the right side through the up and down buttons. The chosen announcement is highlighted by color change.
When you push the Select Entry button, the announcement is shown in the Memo-box. Choose an announcement in the Memo-Box on the right side through the up and down button. The active memo is highlighted by color change.
When you push the Play Next button, the chosen announcement title moves into the ON ANNOUNCE display. The announcement is heard from all the cabin and lavatory loudspeakers.
When you push the Select Entry button, the announcement is shown in the Memo-box. Choose an announcement in the Memo-Box on the right side through the up and down button. The active memo is highlighted by color change.
When you push the Play Next button, the chosen announcement title moves into the ON ANNOUNCE display. The announcement is heard from all the cabin and lavatory loudspeakers.
(2) These indications are possible when input is entered:
(a) The display shows the message 'ERROR':
- When the announcement number is out of range.
(b) The display shows the message 'FOUND':
- When the selected announcement is found.
(c) The display shows the message 'MISSING':
- When the selected announcement cannot be found.
(3) CLEAR Pushbutton
(a) If the CLEAR All pushbutton is pushed, all inputs in the Memo-box are cleared.
B. Announcement Operation by Softkeys
(1) Play Next pushbutton
When this pushbutton is pushed, only the highlighted message on the Memo-box is played and the announcement number moves to the ON ANNOUNCE field.
When this pushbutton is pushed, only the highlighted message on the Memo-box is played and the announcement number moves to the ON ANNOUNCE field.
(2) Play All pushbutton
When this pushbutton is pushed, all announcements in the Memo-box are played and the announcement number moves to the ON ANNOUNCE field.
When this pushbutton is pushed, all announcements in the Memo-box are played and the announcement number moves to the ON ANNOUNCE field.
(3) STOP pushbutton
When this pushbutton is pushed, the current announcement stops.
When this pushbutton is pushed, the current announcement stops.
C. Announcement Operation by Keylines
The CIDS director and the cabin pressure switch 19WR can start some automatic announcements in the PRAM with keyline signals.
These signals are possible:
The CIDS director and the cabin pressure switch 19WR can start some automatic announcements in the PRAM with keyline signals.
These signals are possible:
(1) NO SMOKING/FASTEN SEAT BELT (started from the CIDS director).
The display shows the message 'AUTO' of the ON ANNOUNCE field. At the end of the announcement the PRAM returns to the function which was started before and clears the ON ANNOUNCE field.
The display shows the message 'AUTO' of the ON ANNOUNCE field. At the end of the announcement the PRAM returns to the function which was started before and clears the ON ANNOUNCE field.
(2) Emergency Announcement (started from the cabin pressure switch). The emergency announcement starts directly. The display shows the message 'AUTO' of the ON ANNOUNCE field, and clears the ON ANNOUNCE field. At the end of the announcement all memories are cleared and the PRAM stops.
D. Boarding Music Operation
(1) ON/OFF Pushbutton
When the ON/OFF pushbutton switch is pushed, the integral light in the pushbutton comes on. The channel 1 is displayed on the BGM channel display. When the pushbutton is pushed again, the integral light, the display and the system goes off.
When the ON/OFF pushbutton switch is pushed, the integral light in the pushbutton comes on. The channel 1 is displayed on the BGM channel display. When the pushbutton is pushed again, the integral light, the display and the system goes off.
(2) up and down CHAN pushbutton
When the up and down CHAN pushbutton is pushed, the system moves to the next available channel and at the A/C-Symbol on the BMG 1 display shows the new channel number.
When the up and down CHAN pushbutton is pushed, the system moves to the next available channel and at the A/C-Symbol on the BMG 1 display shows the new channel number.
(3) up and down VOL Pushbutton
When the up or down VOL pushbutton is pushed, the volume level increases/decreases. The volume level is displayed in 2 dB steps at the A/C-Symbol on the VOL-display with ten bar graphs.
When the up or down VOL pushbutton is pushed, the volume level increases/decreases. The volume level is displayed in 2 dB steps at the A/C-Symbol on the VOL-display with ten bar graphs.
(4) Attenuation/Indication List
| ------------------------------------------------------------------------------- |
| ATTENUATION I FAP and AAP INDICATION |
| (dB) I (ILLUMINATED SEGMENTS) |
| ------------------------------------------------------------------------------- |
| 0 10 |
| - 2 9 |
| - 4 8 |
| - 6 7 |
| - 8 6 |
| -10 5 |
| -12 4 |
| -14 3 |
| -16 2 |
| -18 1 |
| -20 0 |
E. Announcement Indication on AIPs
There are no control keys fitted on the AIPs. The system gives a PRE ANNOUNCEMENT message to all attendant indication panels when the announcement system operates.
There are no control keys fitted on the AIPs. The system gives a PRE ANNOUNCEMENT message to all attendant indication panels when the announcement system operates.