DOC AIRBUS | AMM A320FANTI HIJACK CAMERA MONITORING - DESCRIPTION AND OPERATION
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1. General
The Cockpit Door Surveillance System (CDSS) uses cameras in the cockpit entrance, and left and right door 1 areas. They let the flight crew monitor the door 1 area and identify persons who request access to the cockpit.
The Cockpit-Door Surveillance System (CDSS) uses cameras and a system controller to monitor the cockpit entrance and the left and right door 1 areas. The CDSS images are shown on the system display in the cockpit. This lets the flight crew see persons before they get access to the cockpit.
** ON A/C NOT FOR ALL The Cockpit Door Surveillance System (CDSS) uses cameras in the cockpit entrance, and left and right door 1 areas. They let the flight crew monitor the door 1 area and identify persons who request access to the cockpit.
The Cockpit-Door Surveillance System (CDSS) uses cameras and a system controller to monitor the cockpit entrance and the left and right door 1 areas. The CDSS images are shown on the system display in the cockpit. This lets the flight crew see persons before they get access to the cockpit.
2. Component Location
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Cockpit-Door Surveillance-System| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
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| 12RA | CAMERA- COCKPIT DOOR | 210 | 23-72-51 | ||
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| 13RA | CAMERA- DR 1, LH | 224 | 23-72-51 | ||
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| 13RA | CAMERA- DR 1, LH | 221 | 23-72-51 | ||
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| 14RA | CAMERA- DR 1, RH | 224 | 23-72-51 | ||
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| 14RA | CAMERA- DR 1, RH | 222 | 23-72-51 | ||
| ** ON A/C NOT FOR ALL | |||||
| 9RA | CONTROLLER - COCKPIT DOOR SURVEILLANCE SYSTEM | 210 | 23-72-31 | ||
3. System Description
A. The Cockpit Door Surveillance System (CDSS) has the following components:
- 3 Cameras
- 1 LCD (with a system controller)
- 1 CKPT DOOR VIDEO switch
- 1 VIDEO pushbutton.
- Three cameras
- One system controller
- One COCKPIT DOOR VIDEO pushbutton
- One CAM SEL pushbutton
- One rotary switch (CKPT Entry).
(1) Cameras
The three cameras are installed in the ceiling panels in the cockpit entrance and the door 1 area:
The three cameras are installed in the ceiling panels in the cockpit entrance and the door 1 area:
- Camera 1 is installed above the cockpit door. It gives images of the area directly in front of the cockpit door.
- Camera 2 is installed in the ceiling of the right door 1 area. It gives images of the area directly below camera 2 in the right door 1 area
- Camera 3 is installed in the ceiling of the left door 1 area. It gives images of the area directly below camera 3 in the left door 1 area.
(2) LCD (10RA)
The LCD is installed on the aft wall of the cockpit. It lets the flight crew see the picture from the cameras.
The image from camera 1 is shown as a full screen on the LCD and the image from camera 2 and 3 are shown as a split screen. The image from camera 2 is shown on the left side of the LCD screen and the image from camera 3 is shown on the right side. If the LCD is programmed for the 'not-installed' fourth camera a third screen is shown, which is black.
If the system is programmed for the automatic sleep mode, the LCD automatically shows a blank screen if there is no signal from the VIDEO push button (16RA) or the ENTRY REQUEST KEYPAD (Ref. AMM D/O 52-51-00-00) for one minute.
If the system is programmed for the pilot-activated-sleep-mode, when the pilot pushes and holds the VIDEO push button (16RA) for two seconds the LCD screen goes black.
If the system gets no signal from the VIDEO push button (16RA) or the ENTRY REQUEST KEYPAD (Ref. AMM D/O 52-51-00-00) for five minutes the LCD automatically goes into the standby/power save mode.
If the screen is in the standby mode and entry is requested with the keypad, the screen automatically comes on and shows the image from camera 1. If entry is requested again before 30 seconds after the last-entry-request the signals are inhibited. This is to let the pilot use the VIDEO pushbutton to set and see the images from camera 1 or cameras 2 and 3.
If the VIDEO pushbutton is pushed during the first two minutes of the standby/power save mode, the last shown image comes on.
If the VIDEO pushbutton is pushed after the first two minutes of the standby/power save mode, the image from camera 1 comes on.
The LCD is installed on the aft wall of the cockpit. It lets the flight crew see the picture from the cameras.
The image from camera 1 is shown as a full screen on the LCD and the image from camera 2 and 3 are shown as a split screen. The image from camera 2 is shown on the left side of the LCD screen and the image from camera 3 is shown on the right side. If the LCD is programmed for the 'not-installed' fourth camera a third screen is shown, which is black.
If the system is programmed for the automatic sleep mode, the LCD automatically shows a blank screen if there is no signal from the VIDEO push button (16RA) or the ENTRY REQUEST KEYPAD (Ref. AMM D/O 52-51-00-00) for one minute.
If the system is programmed for the pilot-activated-sleep-mode, when the pilot pushes and holds the VIDEO push button (16RA) for two seconds the LCD screen goes black.
If the system gets no signal from the VIDEO push button (16RA) or the ENTRY REQUEST KEYPAD (Ref. AMM D/O 52-51-00-00) for five minutes the LCD automatically goes into the standby/power save mode.
If the screen is in the standby mode and entry is requested with the keypad, the screen automatically comes on and shows the image from camera 1. If entry is requested again before 30 seconds after the last-entry-request the signals are inhibited. This is to let the pilot use the VIDEO pushbutton to set and see the images from camera 1 or cameras 2 and 3.
If the VIDEO pushbutton is pushed during the first two minutes of the standby/power save mode, the last shown image comes on.
If the VIDEO pushbutton is pushed after the first two minutes of the standby/power save mode, the image from camera 1 comes on.
(3) CKPT DOOR VIDEO Switch (17RA)
The CKPT DOOR VIDEO switch is installed on the overhead panel 27VU. It sets the CDSS on or off. The switch has an OFF legend which is on when the system is off and off when the system is on.
The CKPT DOOR VIDEO switch is installed on the overhead panel 27VU. It sets the CDSS on or off. The switch has an OFF legend which is on when the system is off and off when the system is on.
(4) VIDEO Pushbutton (16RA)
The VIDEO pushbutton is installed on the pedestal, on panel 119VU. It lets the flight crew change between the images from camera 1, cameras 2 and 3 and from the 'not-installed' fourth camera (black screen). If the system is programmed for pilot-activated-sleep-mode, it lets the flight crew set the LCD screen into sleep mode (black screen).
The VIDEO pushbutton is installed on the pedestal, on panel 119VU. It lets the flight crew change between the images from camera 1, cameras 2 and 3 and from the 'not-installed' fourth camera (black screen). If the system is programmed for pilot-activated-sleep-mode, it lets the flight crew set the LCD screen into sleep mode (black screen).
(5) Cameras
Three cameras are installed in the ceiling panels of the cockpit entrance and the door 1 area.
Three cameras are installed in the ceiling panels of the cockpit entrance and the door 1 area.
- Camera 1 is installed above the cockpit door. It gives images of the area directly in front of the cockpit door.
- Camera 2 is installed in the ceiling of the right door 1 area. It gives images of the area directly below the camera 2 in the right door 1 area.
- Camera 3 is installed in the ceiling of the left door 1 area. It gives images of the area directly below the camera 3 in the left door 1 area.
(6) System Controller (9RA)
The system controller is installed on the shelf 85VU of the avionics rack 80VU in the avionics compartment. It is supplied with 115VAC through the COCKPIT DOOR VIDEO pushbutton 17RA and gives 12VDC to energize the cameras. The system controller processes the images from the cameras and sends the images to the SD (Ref. AMM D/O 31-67-00-00). The SD shows the images to the flight crew.
The system controller is installed on the shelf 85VU of the avionics rack 80VU in the avionics compartment. It is supplied with 115VAC through the COCKPIT DOOR VIDEO pushbutton 17RA and gives 12VDC to energize the cameras. The system controller processes the images from the cameras and sends the images to the SD (Ref. AMM D/O 31-67-00-00). The SD shows the images to the flight crew.
(7) COCKPIT DOOR VIDEO Pushbutton (17RA)
The COCKPIT DOOR VIDEO pushbutton is installed on the overhead panel 27VU. It sets the CDSS on or off. The pushbutton has a white OFF legend which comes on when the CDSS is off and goes off when the CDSS is on.
The COCKPIT DOOR VIDEO pushbutton is installed on the overhead panel 27VU. It sets the CDSS on or off. The pushbutton has a white OFF legend which comes on when the CDSS is off and goes off when the CDSS is on.
(8) CAM SEL Pushbutton (16RA)
The CAM SEL pushbutton is installed on the pedestal, on panel 119VU. It lets the flight crew make a selection of the images from camera 1 and from cameras 2 and 3 to show them on the SD.
The CAM SEL pushbutton is installed on the pedestal, on panel 119VU. It lets the flight crew make a selection of the images from camera 1 and from cameras 2 and 3 to show them on the SD.
(9) CKPT ENTRY Rotary Switch (19RA)
The CKPT ENTRY Rotary switch is installed on the panel 119VU. It has two positions, CKPT ENTRY and OFF. When it is set to the CKPT ENTRY position , it gives a signal to the Data Management Computer (Ref. AMM D/O 31-63-00-00) and to the system controller. If the white OFF legend in the CKPT DOOR VIDEO pushbutton (17RA) is off (CDSS on), the images from camera 1 are shown on the SD.
The CKPT ENTRY Rotary switch is installed on the panel 119VU. It has two positions, CKPT ENTRY and OFF. When it is set to the CKPT ENTRY position , it gives a signal to the Data Management Computer (Ref. AMM D/O 31-63-00-00) and to the system controller. If the white OFF legend in the CKPT DOOR VIDEO pushbutton (17RA) is off (CDSS on), the images from camera 1 are shown on the SD.
4. Power Supply
The CDSS is supplied with 28VDC from the normal busbar 101PP. The related circuit breaker 15RA (3amp) is installed on the circuit breaker panel 122VU in the cockpit.
The Cockpit-Door Surveillance System (CDSS) is supplied with 115VAC from the normal busbar 103XP. The related circuit breaker 15RA is installed on the circuit breaker panel 120VU in the avionics compartment.
** ON A/C NOT FOR ALL The CDSS is supplied with 28VDC from the normal busbar 101PP. The related circuit breaker 15RA (3amp) is installed on the circuit breaker panel 122VU in the cockpit.
The Cockpit-Door Surveillance System (CDSS) is supplied with 115VAC from the normal busbar 103XP. The related circuit breaker 15RA is installed on the circuit breaker panel 120VU in the avionics compartment.
5. Interface
The CDSS has interfaces with this system:
** ON A/C NOT FOR ALL The CDSS has interfaces with this system:
- Entry Request Control Unit (52-51-00)
- Data Management Computers (Ref. AMM D/O 31-63-00-00)
- ECAM System/Status Display (SD) (Ref. AMM D/O 31-67-00-00)
- Cockpit-Door Lock System (Ref. AMM D/O 52-51-00-00).
6. Component Description
A. Description of Components installed
(1) Cameras
Camera 1 has a 105 degree lens and cameras 2 and 3 can have a 70, 90 or 120 degree lenses (as required).
Camera 1 has a 105 degree lens and cameras 2 and 3 can have a 70, 90 or 120 degree lenses (as required).
(2) LCD
On the front of the LCD there is one green and one white LED, and two rotary knobs.
The two rotary knobs are used to manually set/adjust the screen brightness and contrast.
The green LED shows the status of the LCD:
On the front of the LCD there is one green and one white LED, and two rotary knobs.
The two rotary knobs are used to manually set/adjust the screen brightness and contrast.
The green LED shows the status of the LCD:
- Green LED is on, shows that the system is on
- Green LED is off, shows that the system is off
- Green LED is flashing, shows that a failure has occurred in the system.
(3) Cameras
Camera 1 has a 105-degree lens and cameras 2 and 3 have a 90-degree lens.
Camera 1 has a 105-degree lens and cameras 2 and 3 have a 90-degree lens.
(4) System Controller
The system controller has electronic circuits installed in an ARINC 600 enclosure. It receives input signals from the cameras and also monitors the status of the CDSS system. It processes the signals from the cameras and gives a video feed signal to the System Display (SD) where the images from the cameras are shown.
The system controller is energized with electrical power from the 115VAC normal bus, when the white OFF legend in the COCKPIT DOOR VIDEO pushbutton (17RA) is off. It gives 12VDC electrical power to energize the cameras. The system controller is cooled by forced air from the inner side of the avionics compartment.
The system controller has electronic circuits installed in an ARINC 600 enclosure. It receives input signals from the cameras and also monitors the status of the CDSS system. It processes the signals from the cameras and gives a video feed signal to the System Display (SD) where the images from the cameras are shown.
The system controller is energized with electrical power from the 115VAC normal bus, when the white OFF legend in the COCKPIT DOOR VIDEO pushbutton (17RA) is off. It gives 12VDC electrical power to energize the cameras. The system controller is cooled by forced air from the inner side of the avionics compartment.
7. Operation/Control and Indicating
Push the CKPT DOOR VIDEO switch (17RA) on the overhead panel 27VU to start the CDSS. The images from camera 1 show on the LCD screen (full screen).
On the pedestal-panel 119VU, push the VIDEO pushbutton (16RA) to change the image on the LCD from camera 1 to cameras 2 and 3 (split screen). If the VIDEO pushbutton is pushed again the screen changes from cameras 2 and 3 to the not-installed fourth camera (black screen).
Push the COCKPIT DOOR VIDEO pushbutton (17RA) on the overhead panel 27VU to set the Cockpit-Door Surveillance System (CDSS) on. On the Video Control Panel 119VU, set the CKPT ENTRY rotary switch (19RA) to the CKPT ENTRY position. The picture from camera 1 shows on the System Display (SD).
On the Video Control Panel 119VU, push the CAM SEL pushbutton (16RA) to change the images on the SD from camera 1 to camera 2 and 3 (split screen). Push it again to get the picture from camera 1 again.
The images from camera 1 are automatically shown, if:
** ON A/C NOT FOR ALL Push the CKPT DOOR VIDEO switch (17RA) on the overhead panel 27VU to start the CDSS. The images from camera 1 show on the LCD screen (full screen).
On the pedestal-panel 119VU, push the VIDEO pushbutton (16RA) to change the image on the LCD from camera 1 to cameras 2 and 3 (split screen). If the VIDEO pushbutton is pushed again the screen changes from cameras 2 and 3 to the not-installed fourth camera (black screen).
Push the COCKPIT DOOR VIDEO pushbutton (17RA) on the overhead panel 27VU to set the Cockpit-Door Surveillance System (CDSS) on. On the Video Control Panel 119VU, set the CKPT ENTRY rotary switch (19RA) to the CKPT ENTRY position. The picture from camera 1 shows on the System Display (SD).
On the Video Control Panel 119VU, push the CAM SEL pushbutton (16RA) to change the images on the SD from camera 1 to camera 2 and 3 (split screen). Push it again to get the picture from camera 1 again.
The images from camera 1 are automatically shown, if:
- the Cockpit-Door Lock-System (CDLS) keypad (Ref. AMM D/O 52-51-00-00) is used to get access
- the CDSS is on
- the CKPT ENTRY rotary switch is in the CKPT ENTRY position.
8. Test Bite
The CDSS contains a Built-In Test Equipment (BITE). There is no connection between the CDSS and the Centralized Fault Display System (CFDS). Thus for related system test and failure analysis, the CDSS shows any failure messages on the System Display (SD). If the CDSS has an internal failure, the message "VIDEO FAILED" shows on the SD (if the CDSS is set on the SD).
The CDSS contains a Built-In Test Equipment (BITE). There is no connection between the CDSS and the Centralized Fault Display System (CFDS). Thus for related system test and failure analysis, the CDSS shows any failure messages on the System Display (SD). If the CDSS has an internal failure, the message "VIDEO FAILED" shows on the SD (if the CDSS is set on the SD).