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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.
Figure 1
ASC-2 Module Board
Siemens Industry, Inc.
Building Technologies Division
Florham Park, NJ
P/N 315-092085-11
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.
Siemens Building Technologies, Ltd.
Fire Safety & Security Products
2 Kenview Boulevard
Brampton, Ontario
L6T 5E4 Canada
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Summary of Contents for Siemens ASC-2
- Page 1 ASC-2 compares the amplifier output to the risers by setting switch S2 on the ASC-2. amplifier input from the OMM-1. If they do not Follow the switch setting instructions in the match, a trouble indicates on the MKB-2.
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Page 2: Installation
ON. To close a slide switch, push the O ILLEGAL slide to the side marked ON. ILLEGAL X = SWITCH CLOSED OR ON, O = SWITCH OPEN OR OFF Figure 2 Locating Switches S1 and S2 and Jumpers J1 and J2 on the ASC-2... - Page 3 Figure 2 for the location of switch S2. other card type in the ASC-2 slot. Two keys b. Close SW5 on switch S2 if this ASC-2 card to prevent reverse installation of the card are supervises the backup amplifier. If one...
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Page 4: Electrical Characteristics
(1) from the amplifier to the ASC-2, If the system has NO backup amplifier, place a jumper across terminals 3 and 4. (2) from the ASC-2 to the ZC series of audio cards, and 9. After completing and checking all field wiring, (3) also includes the wire in the longest place the card in its card edge connector. - Page 5 ASC-2 WIRING CHECKOUT CHART RESISTANCE BETWEEN RESISTANCE POSSIBLE CAUSE TERMINALS DESIRED OF PROBLEM 1 to 2 > 1 Meg Line open; other than EL-410C/D connected 1 through 22 to chassis > 1 Meg Short in wiring 15 to 16 > 1 Meg...
- Page 6 7. The wire length includes: The length of the wire from the ASC-2 to the amplifier, the length of the wire from the ASC-2 to the ZC Series of audio cards and back, and the length of the longest speaker zone served by the amplifier.
- Page 7 ASC-2 to the amplifier, the length of the wire from the STYLE 7 ASC-2 to the ZC Series of audio cards and back, and the length of the longest speaker zone served by the amplifier.
- Page 8 Siemens Industry, Inc. Siemens Building Technologies, Ltd. Building Technologies Division Fire Safety & Security Products Florham Park, NJ 2 Kenview Boulevard Brampton, Ontario P/N 315-092085-11 L6T 5E4 Canada...