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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 | 2-28
LBB 3524/00, LBB 3524/10 and LBB 3526/10 FM Electronic channel selector panel
Auto Switch-Off function
The unit’s ‘Auto Switch-Off’ function can be enabled or disabled. If enabled, the unit is switched off by
removing headphones from the jack socket. If disabled, the units remains on when headphones are
removed from the jack socket. See solder spot jumper and resistor configuration. The backlighting
feature is only active when a headphone is connected.
LBB 3524/xx and LBB 3526/10 Jumper and Resistor configuration (FIG. 2-48)
Solder spots
J70 and J71 sets the channel selector’s volume up and down controls. The volume-up
and volume-down can be set independently. The ‘Auto Switch-Off’ function is enabled or disabled
using solder spot
J72.
1. Solder spot J70 (to set repeat/single-step volume-up control)
OPEN Auto repeat volume-up
CLOSED Single-step volume-up
2. Solder spot J71 (to set repeat/single-step volume-down control)
OPEN Auto repeat volume-down
CLOSED Single-step volume-down
3. Solder spot J72 (to set Auto-switch Off function)
OPEN Enabled
CLOSED Disabled
IMPORTANT: The last panel (LBB 3524/10, LBB 3526/10) connected (daisy-chain) must
be terminated with a termination plug LBB 4118/00.
FIG. 2-48 Interconnections LBB 3524/10 and LBB 3526/10
1 2 3
Bottom view
Top view
