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**ON A/C 151-199,
B. General
The CIDS uses these components:
-24 Decoder Encoder Units (DEU) type A 200RH,
-4 Decoder Encoder Units (DEU) type B 300RH,
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the forward attendant panel 120RH,
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the programming and test panel 110RH and CAM 115RH,
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the aft attendant panel 126RH,
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the cabin equipment, see DEU type A,
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the attendant equipment, see DEU type B.
The components of the CIDS are connected to two identical CIDS directors.
The CIDS director 101RH is used as the active director. The CIDS director
102RH is used as the standby director.
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
(1)
CIDS Directors 101RH (102RH) The function of the standby CIDS director 102RH is identical to the function of the active CIDS director 101RH. In normal system operation the outputs from the standby CIDS director are disabled. Inputs and outputs to and from the two CIDS directors are connected in parallel except for:
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the power supply,
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the special relay,
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the director BITE-monitoring connections,
-certain outputs to other equipment or systems. For more information refer to the block diagram, component descriptions and power supply description. Each director contains an OBRM module 101RH1 (102RH1).Inputs and outputs to and from the cabin equipment to the CIDS directors are made via the Decoder Encoder Units (DEU). ARINC links and discrete lines connect the director to individual controls, cockpit equipment and other systems.
(2)
Decoder Encoder Unit (DEU) Type A 200RH The DEUs A 200RH are installed along each side of the passenger cabin. Up to 3 passenger service units (PSU) and 3 passenger information units can be connected to each DEU A. The DEUs A are connected to the directors via a top-line twisted pair data bus. The physical form of this top-line bus are two twisted pairs along each side of the cabin. They are connected to every second DEU. This means that a break in one top-line twisted pair would disable only every second DEU A along one side of the cabin. A resistor terminates each top-line data bus for impedance matching. The DEUs type A are
1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-00Page 24 1201-299, 1Config-1 Aug 01/05R 1 1 1CES 1
identical. The DEU mount 2010VU or 2014VU include coding switches. This gives each DEU location a different address.
(3)
Decoder Encoder Unit (DEU) Type B 300RH The DEUs B 300RH are installed in their DEU-mounts 2011VU or 2015VU in the door areas. In the door area where no DEU B is installed, empty wired-in mounts 2011VU with full provisions are installed. The DEUs B are connected to the flight attendant stations and safety equipment. The DEUs B are connected with discrete lines to:
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the area call panels,
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the attendants handsets,
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the slide-bottle and door-bottle pressure-sensors,
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the EVAC switches and lamps,
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the emergency power supply units, The aft attendant panel receives and transmits serial data via a RS232 link, it is also connected to the DEU type B with discrete lines. A serial RS232 link also transmits data to each AIP. Discrete connections provide AIP power and reception of AIP BITE status. The DEUs type B connect to the directors via a middle-line twisted pair data bus. One twisted pair cable on each aircraft side connects to all DEUs type B on that side. A resistor 310RH terminates each middle-line data bus cable for cable impedance matching. The DEUs type B are identical. Coding switches in each DEU mount are used to define a different address for each DEU B location.
(4)
Forward Attendant Panel 120RH The forward attendant panel 120RH transmits data to the directors via a serial ARINC 429 link which are connected to both directors in parallel. For transmission of data from the directors to the forward attendant panel, two separate ARINC links are provided, one from each director. Separate discrete lines from the panel connect to the power supply units of reading lights, the attendant work lights and lavatory lights. Discrete lines also connect to an adjacent DEU B for EVAC control.
(5)
Programming and Test Panel 110RH The programming and test panel 110RH transmits data to the director via a serial ARINC 429 link which is connected to both directors in parallel. For transmission of data from the director to the panel, two separate ARINC links are provided, one from each director. The Cabin Assignment Module (CAM) 115RH plugs directly into the front face of the panel. Interaction between director and CAM is via the programming and test panel ARINC links.
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