Oxmoor MCS - Manual (Page 3)

MAINFRAME
MODULES
MCS-LI Line Input Card
An MCS-LI Line Input Card is
used for each zone or room to
be combined. The Line Input
card provides barrier strips for
balanced audio inputs and
outputs, remote volume
control, and LOCAL and
MUSIC SELECT with TALLY
indications. A trim pot,
accessible from the front panel,
may be used for audio input
level adjustment.
MCS SYSTEM COMPONENTS
MASTER CONTROL PANEL
The 6 rack-unit (10.50") MCS-MCP Master
Control Panel, custom-designed for your specific
configuration, is the primary user interface to the
system.
MASTER VOLUME PANEL
A 2 rack-unit (3.50") MCS-MVP Master Volume
Panel provides volume control and source
selection functions for each room at a remote
location.
INTERFACE BOX
The 1 rack-unit (1.75") MCS-IB Interface Box
provides the interface between a control device
using contact-closures, such as the MCS-MCP
Master Control Panel, and the MAINFRAME.
ROOM PANEL
The 3 gang MCS-RP Room Panel provides a
means to adjust local volume and to assign either
a local source or a background music source to
the room.
MAINFRAME
This 3 rack-unit (5.25") chassis houses a power
supply plus three types of plug-in cards. These
include MCS-LI Line Input card for each room to
be combined, a MCS-LC Logic Card, and one
MCS-CC Control Card.
Page 3
MCS-LC Logic Card
When rooms are combined, all
volume controls in the
combined rooms default to a
preset level. The preset levels
may be set using the COMBINE
LEVEL LOCAL and MUSIC
attenuators on the MCS-LC
Logic Card.
Also included on the Logic
Card is a balanced MUSIC
input that can be used for
background music sources and
paging. A volume control,
accessible from the front panel,
allows level adjustment of this
input.
The Logic Card provides PAGE
logic connections for paging
overrides. Rooms which have
MUSIC selected on their Room
Panel will default to the MUSIC
preset level when the PAGE
logic is used.
Also on the Logic Card, screw
terminal blocks provide HEAD-
TABLE switching logic for relay
muting of speakers over a head
table location.
MCS-CC Control Card
Communication between a
controller and the MCS-LC
Logic Card in the system
Mainframe follows PA-422
protocol. The MCS-CC Control
Card provides loop-through
connections and address
selection for PA-422 devices.
MCS-L I
CU
DISP
IN +
IN –
SHIELD
OUT +
OUT -
SHIELD
COM
CD
LOCAL TALLY
MUSIC TALLY
LOCAL SELECT
MUSIC SELECT
MUTE
MCS-LC
MUSIC IN -
PAGE
MUSIC IN +
COM
SHIELD
COM
COMBINE LEVEL
LOCAL
HEAD 1
HEAD 2
HEAD 3
HEAD 4
HEAD 5
HEAD 6
HEAD 7
HEAD 8
POWER
COM.
MUSIC
MCS-CC
PA-422
IN
PA-422
OUT
1
2
4
8
16
32
64
128
PA-422
ADDRESS
ON
MCS–LI Line Input Card
MCS–LC
Logic Card
MCS–CC Control Card