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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 | 2-16
LBB 3540/15 Multi-purpose connection unit
4. 20-pole Micromatch connector for connection to:
- LBB 3541/00 FM Delegate voting control panel
- LBB 3542/00 FM Delegate/Chairman voting control panel with LC-display
- Custom-built solutions including push-button and LEDs
5. 6-pole modular jack for LBB 3555/00 Intercom handset.
6. 10-pole Micromatch connector for connection to:
- ID Chip Card reader panel LBB 3543/15.
7. 2 m long cable terminated with a 6-pole circular connector for connection to the trunk-line.
8. Screw holes for securing the unit.
9. Switch cover panel.
10. Tie-wrap holes for securing attached cables. Tie--wraps are included with the unit.
11. Jumper for assigning the unit as either a delegate or as a chairman unit.
12. Initialization button (Init) used for initializing the unit during installation. Also used to reset the
unit’s address (De-Init).
13. Input level potentiometer: ± 3 dB.
14. Initialization indicator (LED) indicating the unit requires initializing.
15. Selector switch for selecting:
- Asymmetrical microphone input or Symmetrical microphone input or Symmetrical microphone
input with Phantom power supply (applicable to both inputs).
16. Input attenuation selection of: 0, 6, 12 or 18 dB (applicable to both inputs). Default setting: 6 dB.
17. Jumper J01for assigning connected units as either an entrance or exit unit. (See Table. 2-1.)
NOTES:
1. Jack socket marked (2) is ideally suited for loudspeaker panel LBB 3538/00 because its output is
switched off when a microphone is switched on (preventing acoustic feedback). Jack socket out-
put marked (1) is not muted when a microphone is switched-on
2. For connection details of the input sockets see LBB 3535/00 Dual Audio Interface Unit
FIG. 2-24 LBB 3540/15 connection
FIG. 2-25 Layout LBB 3540/15 Multi-purpose connection unit
4
5
10
6
7
121 2
Init +/- 3dB
Attn
P12
Sym
Asym
18
12
6
0
dB
Chairman
Delegate
8
9
8
10
1
5 6 74
2
3
11
12
13
14
15
16
PCB located inside the unit
J02
MIC
J01
UNIT
J03
ND
BOSCH
J02
J01
Installation
Solder spot J01See table below
Solder spot J02 Open (default)
Solder spot J02 Closed (To set LED
light ring Indication to flash for the last
minute of remaining speech time).
Solder spot J03 Open (default)
Solder spot J03 Closed (no display
unit connected)
Table 2-1. Jumper J01
Jumper
Chairman/delegate
J01 Function
Open
Chairman
Delegate
OPEN
Assigned as Chairman unit
Assigned as Chairman unit
Assigned as Delegate unit
Open
Chairman
Delegate
CLOSED
Assigned as Entrance unit
Assigned as Entrance unit
Assigned as Exit unit
J03