11
Rules for installing the sound system
By-me branch. Free wiring
Speaker system branch. By-me devices cannot
be connected; In-out wiring (linear, not star);
max number of speaker system devices: 64.
The shunt for the By-me enables creating
By-me branches that contain a max of 10
automation devices.
Max no. of shunts 01903=64
The sound system shunt enables shunting
speaker system branches (max 2 01904 per
line).
Decoupler for By-me power supply for speaker
system. It must be inserted between the power
supply and the audio line; none of the By-me
devices between the decoupler and the power
supply are “seen” by the speaker system.
Typical use in systems where there is a single
prearrangement for the automation Bus and
the speaker system Bus (therefore not in
separate conduits).
This explains how it is possible to make a
completely integrated system with the By-me
automation and speaker system devices on the
same branch.
Legend
Warning: By-me devices are not connected
directly to the branch of the speaker system (blue
branch) but through special shunts or through
the devices of the speaker system (that have a
special terminal).
01903
01904
01902
Example 3: By-me automation and speaker system on the same branch.
01801
01801
01902
20581
20582
20582
20581
01901
01903
01904
01902
Decoupler for By-me
power supply unit
01801
By-me branch:
max 10 free wiring
devices
By-me branch:
max 3 devices
By-me branch:
max 3 devices
By-me branch:
max 3 devices
By-me branch:
max 3 devices
By-me branch:
free wiring
Power supply
unit
20582
20581
20581
20581
20581
01901
Branch termination via jumper
Power supply
unit