P/N 315-092085-11
Installation Instructions
Model ASC-2
Audio Supervision Card
INTRODUCTION
The Model ASC-2 Audio Supervision Card
from Siemens Industry, Inc. supervises the
output of one primary amplifier and one
backup amplifier in an MXLV System. The
ASC-2 compares the amplifier output to the
amplifier input from the OMM-1. If they do not
match, a trouble indicates on the MKB-2. The
supervised output may be connected in Style
Y or Style Z. The audio output can be con-
nected to the ZC zone card series.
If the primary amplifier fails, the ASC-2
switches:
• the input signal for the failed amplifier to
the backup amplifier,
• and the backup amplifier output to the
audio channel formerly served by the
failed amplifier.
This card provides the means for multiple
ASC-1/-2 cards that supervise many amplifi-
ers to share one backup amplifier.
The primary amplifier gets its input from the
OMM-1 terminal block adjacent to the OCC-1
Output Control Card module. The amplifiers
can be assigned to any one of the three audio
risers by setting switch S2 on the ASC-2.
Follow the switch setting instructions in the
INSTALLATION
section to set the desired
amplifier input selections.
The ASC-2 occupies one of eleven sub-
addresses of the OCC-1. When installing an
ASC-2 card, use the CSG-M configuration
printout to locate the address of the card. Use
switch S1 to set a unique address for the
ASC-2 card as described in the
INSTALLA-
TION
section.
For additional information on the Voice
System, refer to the MXLV Manual
P/N
315-092036.
Figure 1
ASC-2 Module Board
Siemens Industry, Inc.
Building Technologies Division
Florham Park, NJ
Siemens Building Technologies, Ltd.
Fire Safety & Security Products
2 Kenview Boulevard
Brampton, Ontario
L6T 5E4 Canada
