Siemens
Siemens
Siemens
Siemens
Siemens Industry
Industry
Industry
Industry
Industry,,,,, Inc.
Inc.
Inc.
Inc.
Inc.
Building
Building
Building
Building
Building T
TT
TTec
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echnologies Di
hnologies Di
hnologies Di
hnologies Di
hnologies Division
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P/N 315-050263-3
Audio Level Conversion Card
Installation Instructions
Model ALCC
INTRODUCTION
The Model ALCC from Siemens Industry, Inc., is an
Audio Level Conversion Card that contains two audio
channels. Each channel is capable of accepting speaker-
level audio at 70VRMS from Siemens amplifier models
ZAC-30 (MXL) and ZAC-40 (XLS/Desigo Fire Safety
Modular/Cerberus PRO Modular). There is a single
output channel of line-level audio for connection to the
AIC (Audio Input Card).
The ALCC adds system-wide live emergency paging
capability to networked XLS/Desigo Fire Safety
Modular/Cerberus PRO Modular Voice systems as well
as an all-call function for XLS/Desigo Fire Safety
Modular/Cerberus PRO Modular-based MXL/XLS/
Desigo Fire Safety Modular/Cerberus PRO Modular
hybrid systems. Located on the receiving end in up to
63 remote XLS/Desigo Fire Safety Modular/Cerberus
PRO Modular nodes, the ALCC converts the audio
signal generated by the amplifiers located in the
primary and secondary paging stations into a form that
is compatible with AICs located in the remote stations.
The ALCC is transparent to the host system. As such, it
supports all styles of wiring supported by ZAC-40 (XLS/
Desigo Fire Safety Modular/Cerberus PRO Modular) as
well as ZAC-30 (MXL) amplifiers. It provides supervision
by constantly monitoring its two audio channels,
reporting faults both visually and through the down-
stream AIC. Furthermore, the ALCC contains audio
detection and channel selection circuitry that prioritizes
incoming audio, enables the appropriate channel,
closes the AIC audio active contact, or cuts the output
of the ALCC to generate an AIC trouble, depending on
the presence of incoming audio or circuit faults. Finally,
all XLS/Desigo Fire Safety Modular/Cerberus PRO
Modular functions are configured in the Zeus program-
ming tool via standard logic functions with no need for
special software or hardware upgrades.
•
Two isolated audio channels, 70VRMS input from ZAC-30 (MXL) or ZAC-40
(XLS/Desigo Fire Safety Modular/Cerberus PRO Modular) amplifiers.
•
Single channel output to the AIC, 0.775VRMS.
•
±6dBu output adjustment capability, independent for each channel.
•
Up to 63 ALCCs on a single audio riser.
PRIMARY SELECTED
SECNDRY SELECTED
POWER
ALCC
FAULT TEST
GAIN
_
+
ACTIVE
FAULT
SECONDARY
CHANNEL
FAULT TEST
GAIN
ACTIVE
FAULT
PRIMARY
CHANNEL
_
+
Figure 1
ALCC Speaker Line
Output Card
Features
