Installation
12
a/b-Audiobox - Operation Guide - V03 10/2020
– Cinch cable
– For switching function: Installation cable (for example, J-Y(St)Y n x 2 x 0.6)
with the following features:
• at least two cores
• unscreened, but screened if conditions are unfavourable, for example,
near a strong transmitter or an electrical power line
1.
Connect the a/b input on the a/b-Audiobox to an internal a/b port on the
PBX.
2.
Connect the announcement output on the a/b-Audiobox to the amplifier
input on the sound system.
3.
For switching function: Connect the switching output on the a/b-Audiobox
to the switching input on the sound system.
Extending the Connections with a/b Switching Modules
Warning:
Handling the device improperly can cause a life-threatening elec
-
trical shock, or damage or destroy the device.
• When connecting an a/b switching module, please also refer to the
safety information and technical data in the a/b switching module
instruction manual.
You can extend the a/b-Audiobox with optional a/b switching modules to add
some switching functions (e.g. switching a lighting system).
An a/b-switching module only switches a device on if a signal with a specific
frequency is sent over the a/b line. In total six different switching frequencies are
available for the a/b switching modules. You can use the integrated DIL switch
).
Important:
An a/b switching module can only maintain a switching opera
-
tion for 1 to 4.5 seconds.
• If a switching operation needs to last longer, use a time relay such as a
stair light timer (for connection details, see
).
The a/b switching modules only need a very low quiescent current for
problem-free operation. If an electronic ringer or an electronic stair light
timer with a high internal resistance is connected, it is possible that the a/b
switching module will not function correctly.
• Each a/b switching module is supplied with an additional resistor to
resolve this problem. Connect this resistor to the terminal clamps on the