Bosch Digital Congress Network Data Brochure page 39

38 | DCN Contribution Equipment |
LBB 3540/15
Multi-Purpose Connection Unit
• Two mixing microphone inputs
• Outputs to headphones or loudspeakers
• Range of mounting options
• Use for entrance/exit registration
The Multi-Purpose Connection Unit is intended for use
in flush-mounted tailored solutions. Its versatility
enables a number of functions to be added, making it
ideal for both chairmen and delegates alike. Such func-
tions include facilities for connecting a Voting Control
Panel, with or without an LCD Display (LBB 3541/00
or LBB 3542/00), and an LBB 3543/15 Chip-Card
Reader.
In addition, two audio input sockets with phantom
supply provide a choice of connecting two micro-
phones, such as those in the condenser or dynamic
range. Both audio inputs are mixed together. The unit
is especially suited for use with Hand-Held
Microphones LBB 3536, Microphone with Control
Panel LBB 3537/xx or LBB 3549/xx Pluggable
Microphones with LBB 3537/20 Microphone Control
Panel. In addition the unit also provides connection for
an Intercom Handset LBB 3555/00.
A 3.5 mm (0.14 in) stereo jack socket is provided for
connection to headphones or to loudspeaker panel
LBB 3538/00. The loudspeaker output is switched off
when the units input is switched on. The unit, housed
in an ABS case, can be mounted free-standing on a
table-top, mounted on a wall, or discreetly mounted
into table-tops or into the arm rests of chairs etc.
DCN Data Brochure
Controls and indicators
• Two switches are provided for the following:
(1) Asymmetrical or Symmetrical microphone input or
Symmetrical microphone input with phantom power
(2) Attenuation : 0, 6, 12 or 18 dB
• +/- 3 dB input level fine adjustment potentiometer
Note: An internal jumper is available when assigning the
multi-purpose connection unit for use as either a delegates
unit or a chairman unit. When used as a chairman unit,
one input is for microphone (LBB 3537/xx) and the other
for priority control (LBB 3537/10).
Another internal setting is available for assigning the
LBB 3540/15 as an entrance/exit unit, used in combina-
tion with Chip-Card Reader Panel LBB 3543/15 and LCD
Display LBB 3542. Software module Attendance
Registration LBB 3578 is also required.
Interconnection
• 20-pole connector for connection of Delegate Voting Control
Panel LBB 3541/00 or FM Delegate/Chairman Voting
Control Panel with LCD Display LBB 3542/x0
• 10-pole connector for Chip-Card Reader Panel
LBB 3543/15
• 6-pole modular jack connector for Intercom Handset
LBB 3555/00
• Two balanced audio inputs for microphones with or without a
phantom
power supply (2 x 8-pole 262° DIN-type socket)
• Remote control inputs (switches) and outputs (LEDs) match-
ing LBB 3536/00 and LBB 3537/00 control facilities
• Loudspeaker output connector (3.5 mm (0.14 in) stereo jack
socket)
• 6-pole circular connector for loop-through system cabling
• 2 m (78.74 in) cable terminated with a moulded 6-pole circu-
lar connector
Technical data
Mounting table-top (free standing), on wall or
flush mounting
Dimensions (H x W x D) 35 x 100 x 170 mm
(1.37 x 3.93 x 6.69 in) (excl. cables)
Weight 500 g (1.10 lb)
Colour charcoal (PH 10736)