Bosch Appliances Webcam 3922 988 43318 User Manual

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Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation  and Operating Manual | Chapter 8 - Information Displays
en | 8-1
LBB 3512/00 Data Distribution Board
Chapter 8.
Information             
Displays
Hall displays enable conference information to be clearly and effectively displayed to a large number 
of conference participants. Numeric, alphanumeric and geographical displays are available, and mainly 
used for displaying voting results and other text and conference related data.  Also direct view or 
front and rear projector video displays can be used e.g. TV receivers, Video projectors for long 
distance viewing
In order to drive a hall displays, a data distribution board LBB 3512 must be installed in the display. The 
board includes an RS232 communication port with a baud rate of 9600 or 19200 baud selectable by 
an on-board dip-switch. Opto couplers isolate it from the DCN system. It can be powered from the 
DCN system or an external power source.
FIG 8-1 Information display
8.1   LBB 3512/00  Data Distribution Board
The data distribution board provides the communication interface between the DCN system and 
externally connected peripheral equipment - such as hall displays, remote switching panels and 
tailored conference solutions. The board is intended for mounting in the relevant equipment and 
includes an RS232 communication port with a baud rate of 9600 and 19200 baud - selectable by an 
on-board dip switch. The board can be powered by the system itself or from an external power 
source.
Interconnection between the board and the DCN system is via a 6-pole circular connector. The board 
has no system loop-through facility, therefore a Trunk-splitter LBB 4114/00 or Tap-off unit LBB 4115/
00 is used to bypass the board in a loop-through configuration.
The board can be used as either a passive unit for reception of data , or as an active unit for 
transmission of data to the CCU.
FIG 8-2 LBB 3512/00 Data Distribution Board
Electrical data
16-bit parallel data input/output
15 inputs/16 outputs (5V CMOS input/open collector output)
Address allocation: 248 - 255. The following addresses are defined as:
- 248 Numeric display
- 249  Alpha-numeric display 1
-  250  Alpha-numeric display 2
-  251  Status display (= e.g. synoptic display) (1500 delegate positions for individual results)
-  252  Chairman display EC version (Reserved)
-  253  Not used
- 254   Not used
- 255   Interpreter lamp panel (e.g. Speak to-fast indication)
Numeric Hall Display
Geographic Hall Display
Alphanumeric Hall Display
Data Distribution Board LBB 3512/00