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Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation and Operating Manual | Chapter 2 - Contribution Equipment
en | 2-15
LBB 3536/00, /10 Hand-microphones
2.10 LBB 3536/00, /10 Hand-microphones
Unidirectional back-plate electret microphones with built-in pop and wind-shield. Both microphones
include a microphone on/off button and indicator lamps (LEDs). Microphones can be connected to
the Dual Audio Interface Unit LBB 3535/00 or to Multi-purpose connection unit LBB 3540/15.
LBB 3536/00 includes an uncoiled 5m (16.4 feet) long cable, and LBB 3536/10 includes a coiled cable
0.4 m long (uncoiled 1.4 m (4.5 ft.) long).
NOTE: The maximum length of extension cable that can be used is 5 m. (16.4 ft.).
Controls and Indicators (FIG. 2-22):
1. Request-to-speak confirmation indicator (green LED).
2. Microphone On/Off or Request-to-speak button.
3. Microphone On indicator (red LED).
Interconnection
4. Cable terminated with an 8-pole 262° DIN-type plug.
Mounting
Clamps are available for mounting on floor stands
• For floor stands: Universal mic. clamp LBC 1215/01
FIG. 2-22 Hand microphones
2.11 LBB 3540/15 Multi-purpose connection unit
The LBB 3540/15 is intended for use in tailored flush mounted solutions. Its versatility enables a
number of functions to be added, making it ideal for both delegate and chairman positions. Functions
include voting control panel, with or without LC-display (LBB 3541/00 or LBB 3542/00) and an ID-
Chip Card Reader LBB 3543/15.
Two mixed audio input sockets with phantom supply enables up to two microphones to be
connected. The sensitivity of the microphones can be adjusted simultaneously in 4 steps of 6 dB and
a fine adjustment of ±3dB. Facilities are also available for connecting an intercom handset LBB 3555/
00. A 3.5 mm stereo jack socket is provided for connection to headphones or to a loudspeaker panel
LBB 3538/00. The loudspeaker output is switched off when the microphone is switched on.
NOTES:
1. A jumper on selection panel (FIG. 2-25 (11) is used when assigning the unit for use as
either a delegate or chairman unit. When used as a chairman unit, MIC 2 input is for
microphone (LBB 3537/xx) and MIC 1 input for priority control (LBB 3537/10).
2. The unit can also be used as an entrance or exit unit for registration and access
purposes
FIG. 2-23 LBB 3540/15 Multi-purpose connection unit
Controls and Indicators (FIG. 2-24 and FIG. 2-25)
1. 6-pole circular connector for connection of other system units (loop-through).
2. 2 x 3.5 mm stereo jackplug sockets (marked I and 2) for connection to:
- LBB 3538/00 FM loudspeaker* panel (or)
- Headphones (or)
- Combination of both of the above
* Loudspeaker output 2 is automatically muted when the microphone(s) on input(s) 3 is active.
3. 2 x 8-pole 262° DIN-type connectors (marked I and 2) for connection to:
Microphone with FM Control Panel LBB 3537/xx, or the Chairman microphone Priority Switch
Panel LBB 3537/10 or standard microphones LBB 3536/00 and /10. When two microphones are
connected (delegate mode only), both are switched on at the same time.
1 2
3
4
LBB 3536/00
(LBB 3536 includes 5 m (16.4ft.)
coiled cable)