Clear-Com MS-222 User Manual

INSTALLATION
/
Clear-Com
MS-222
2-Channel
Main
Station
2.3
REAR
PANEL
DESCRIPTION
(S~rM~0
Fij
MS-222
Rear
Panel
1. Power
Switch
The
AC "Power
Switch"
is
located
on the
top
left corner
of
the
rear panel.
The switch
is
a rocker
switch
with
a "1"
mark
for
on
and
"0"
for off.
2. Power
Connector
Just
below
the
power
switch
is
an EIA
power
receptacle
for
either
115
or 230
VAC
power
input.
3.
Power
Voltage
Select
and
Fuse
Block
Just
below
the
EIA
receptacle
is a plug-in
fuse
block.
By placing
a flat
blade
screwdriver
in the
slot
between
the
connector
and
the block
and
twisting
slightly
the
fuse
block
will
release
from
the
connector.
Complete
removal
of the
block
will give
access
to both
fuses.
Both
fuses
are
identical
in
value
regardless
of the
AC voltage
applied.
By turning
the block
over
when
replacing
it in the
receptacle
will convert
the input
voltage
range.
The
vo tage
rangn
that
iua
rignI
side
U on
theI
bottom
oflt
bI Nk
E
the oln
selected.
4.
Intercom
Line
Connectors
There
are
two
sets
of three
XLR-3M
intercom
connectors
for
both
channel
outputs.
Standard
Clear-Com
wiring
is as
follows:
Pin
1 --
Ground
Pin 2
- +30
VDC
Pin
3 - Intercom
Audio
5. Termination
Switches
Each
intercom
channel
is
provided
with
a
'Termination"
switch
allowing
easy
termination
of
the intercom
line.
The switch
is
provided
in
case
there
are multiple
MAIN
stations
connected
to the
inter-corn
line.
CAUTION:
FOR
PROPER
OPERATION
IT IS
IMPERATIVE
THAT
ONE
AND
ONLY
ONE
TERMINATION
BE
PRESENT
ON
A CLEAR-COM
INTERCOM
LINE.
CLEAR-
COM
LINE
DRIVERS
DEPEND
ON A
KNOWN
LOAD
VALUE
FOR
PROPER
OPERATION.
11/90
Rev.
1.0
Page
12

Clear-Com MS-222 Specifications

General

Brand	Clear-Com
Model	MS-222
Category	Intercom System
Language	English