Clear-Com MS-222 Instruction Manual
MS-222
2-Channel
.~
1ll
Main
Station
INSTRUCTION
MANUAL
Clear-Corn
EIF
Intercom
Systems
Clear-Com
945
810142
Camelia
St.
Berkeley,
California
94710
510-527-6666
9/25/91
REV.A
ADDENDUM
I
Clear-Com
MS-222
2-Channel
Main
Station
O
RMK
OPERATION
References
disregarded.
500
Series
whenever
Mic-Kill
Channel
Beh
Use
auxiliary
the
power
Channel
button
Packs
of
more
power
RMK
sources
the
B
XLR
function
B
to
the
RMK
Belt
Packs
Remote
on
a
MS-222
receptacles.
connected
than
one
source
may
causing
RMK
is
available
function
have
the
Mic-Kill
to
that
power
(i.e.
battery
not
be
system
as
as
they
feature
button
is pressed.
or CS-222
This
will
reset
station.
source
used.
power
a
special
is
or
power
In
this
disruption
appear
of
resetting
station
NOT
will
microphone
recommended.
supply)
situation
or
order.
Consult
in
the
body
microphone
Momentarily
interrupt
is
operating
damage
+30
staus
If
used
to
factory
in
of
the
manual
status
to
pressing
volt
to
the
more
conjunction
RMK
the
sales
the
power
off
condition
than
will
short
Main
department
the
off
Channel
to
both
one
Main
with
circuit
Station.
text
are
condition
A
Remote
Channel
on
all
500
Station
a
Main
Station
any
for
details.
to
be
A
and
series
or
an
additional
5/92
Rev.
1.2
Clear-Com
MS-222
2-Channel
Main
Station
O
CLEAR-COM
LIMITED
Clear-Com
and
Clear-Com's
without
appearing
Berkeley,
This
beyond
operation,
defective
and
with
warranty.
To
"Procedures
Adjustment."
This warranty
respect
determine
intended
WARRANTY
workmanship
charge,
Ca.
warranty
the
or
repair
their
serial
obtain
warranty
to
Clear-Com
purpose.
products
for
sole
obligation
the
in
products
94710-1484,
does
control
abuse,
not
before
of
accident,
improper
authorized
numbers
service,
for
Returns"
is
the
purchase
are
warranted
a
period
during
parts
and
returned
U.S.A.
not
cover
Clear-Com,
failure
associated
by
Clear-Com,
removed
follow
and
sole
and
exclusive
products.
that
to
be
of
one
year
the
labor
necessary
prepaid
any
defect,
including
to
follow
equipment,
or
defaced
the
procedures
"Shipping
It
is
the
this
product
free
from
defects
from
the
date
warranty
to
malfunction
and
to
express
responsibility
period
to
remedy
Clear-Com,
unreasonable
instructions
attempts
shipping
are
not
described
Manufacturer
warranty
is
suitable
in
materials
of
sale.
is
to provide,
covered
945
Camelia
or failure
or negligent
in
the
Manual,
at
modification
damage.
covered
below
for
Repair
given
of
the
user
for
the
defects
St.,
caused
Products
by
this
in
or
with
to
user's
0
Return
Any
chantability
Neither
for
Shipping
Procedures
--
-Customer
below.
-Return
-name
equipment,
number(s).
Questions
and
all
implied
are
Clear-Com
incidental
Instructions
for
If
repair
is
necessary,
If
repair
through
Service
They
Do
not
return
Authorization
Be
prepared
of
person
description
regarding
warranties,
limited
to
nor
the
or
consequential
returns:
contact
the
dealer
Department,
will
issue
a
any
equipment
Number.
to
provide
to
Customer
Clear-Com
945
Berkeley,
Telephone:
Fax:
your company's
contact
of
returns
Camelia
(510)
including
the
duration
dealer
damages
the
is
not
located
Return
Authorization
to the
regarding
the
defect,
for
repair
Service
Intercom
Street
California
(510)
527-6699
the
of
this
who
sells
of
any
dealer
where
possible,
at
the
factory
name,
the
repair,
and
the
should
Department
Systems
94710-1484
527-6666
implied
express
Clear-Com
contact
without
warranty
limited
kind.
the
unit
the
factory,
Number
first
address,
type
and
equipment
be
directed
of
warranty.
products
was
purchased.
Clear-Com
as
directed
(RMA).
obtaining
phone
quantity
serial
to:
mer-
is
liable
a
number,
of
the
11/90
Rev.
1.0
Page
2
Clear-Corn
MS-222
2-Channel
Main
Station
Shipping
NOTICE
BEFORE
IQ
Manufacturer
All
Parcel
shipped
tainer
quate
wrapped
similar shock-absorbing
or
to
the
Upon
Parcel
ABOUT
YOU
SPECIFICATIONS
Performance
specifications
system installation. Actual
BEGIN
To
carefully.
and
ing
might
tomer
in
Repair
for
shipments
Service
is
size.
work
the
attention
Return
completion
Service or
...
get the most out of the
service
Section
have
Service
this
manual.
of
Clear-Com equipment
or
the
in
the
original
not
available, use
If a
substitute
in
paper
and surrounded with
to
be
done
of
the Customer
Authorization
of
other
specifications
and are
It
will
answer questions
of
the
that
provides
with
system
Department
best
packing container;
should
repairs, equipment
included
components
or Adjustment
must
be
prepaid
available
a suitable
container
material. A detailed
be
Number.
specified
included
operating
MS-222
causes
and
component operation. Clear-Com's
is
shipper.
container
is
used,
included.
Service
shipper.
in
for
customer
performance
Main
you
might
in
the
system.
and
possible
available
The
equipment
however,
the
at
least
All
shipments should be
Department
will
be
this
manual are
Station, read
have
to
answer
if
that
is
equipment
four
inches
description
and must
returned
guidance
may
about
Included
solutions
questions
via
United
should
the
original
rigid
and of
should
of
of the
collect
design-center
and
to
vary.
this
manual
the
operation
is a Troubleshoot-
to
problems
not
be
con-
ade-
be
excelsior
problem
directed
include
via
United
facilitate
Cus-
covered
or
you
11/90
Rev.
It
systems.
Clear-Com
1.0
is
assumed
you
If
you
are
Concept'.
are
not,
familiar
it
is important
with
Page
the
operation
to
3
read
of
basic
the
section titled
intercom
"The
DESCRIPTION
/
Clear-Corn
MS-222
2-Channel
Main
Station
O
SECTION
DESCRIPTION
THE
1
CLEAR-COM
Clear-Com
communication
singlemulti-channel
Clear-Com
are
other
Clear-Com
using
station
audio
is
power supply.
Clear-Com
own
Automatic
is
line
make
or
compatible
communication
3-pin
or
information.
needed
mic
disconnected,
station.
Clear-Com
OF
THE
MS-222
CONCEPT
is a
closed-circuit
in
high-noise
multi-channel
remote
manufactures
with each
stations
XLR
power supply
throughout
is
preamplifier,
Headset
Low-impedance
are
connectors.
The
a
distributed
Detection
so
background
channels
2-CHANNEL
intercom
and
low-noise
power
supply
stations,
systems
interconnected
to all
shield
the
headset
such
a
wide
variety
other.
intercom
Clear-Corn
and
One
remote
acts
amplifier
or
speaker power
circuit
noise
mic
input
virtually
wire
INTERCOM
system
or
as
beltpacks
devices.
with
carries
stations,
as a common
network,
system; each
shuts
on
lines
immune
that
environments.
main
station
of both
portable
intercom
two-conductor,
the
and
and
off a station's
the
line
(200
to
RFI
STATION
consistently
connected
and
loudspeaker
and
systems
DC
power
the
other
ground.
is
usually
main
and
amplifier,
mic
is not
increased
Ohms)
and
and
dimmer
provides
A
basic
system
to
various
stations.
fixed-installation
can
also
interface
shielded
(28-30
wire
One
located
remote
and
pre-amp
specially
microphone
volts)
carries
termination
in
the
station
signaling
when
by
an
unused
designed
noise.
high-clarity
consists
single-
units.
with
cable,
from
a
2-way
(duplex)
(per
channel)
main
station
houses
circuitry.
the
headset
yet
circuitry
of
or
All
main
its
The
on-
a
or
Clear-Com
auxiliary
source to
Visual
stations,
headsets.
Depending
enough
speaker
Remote
place
not
The 28-30
stations
quiescent
than
voltage
the
continue
program
be
Signal
allows
DC
stations)
stations
a
minimum
fluctuate
to
for
110dB
losses
addition
operating
main
stations,
input
fed
to
Circuitry
the
upon the
power
to
bridge
load
as
stations
volts
DC
operate
speaker
SPL
using
to
an
of
great
power
with
the
intercom
(CALL
user
to attract
type
of
is
available,
30
(all
the
on
the
leave and
provided
with
minimal
stations)
Clear-Com
absolute
length
with
less
supplies
its
own
system.
Lights),
the
main
and
a
maximum
headset
intercom
line.
The
join
by
main
current
while
Headsets).
minimum
of
cable or
than
12
and
volume
stations)
volts
control,
a
standard
attention
remote
number
can
line
at
a
audio
the network.
stations
(25 mA.
generating
in
long
many
more
available.
certain
stations
very
level
and
remote
which
feature
of operators
selected
of remote
be
distributed
high
impedance
always remains
power
quiescent
extremely
The
higher
lines.
If
the
stations,
stations
allows
on most
supply
an
main
who have
and
assuming
stations
along
(>1 0 KOhms),
constant,
units
for
headset stations,
loud
listen
voltage
supply
Clear-Com
and
voltage
each
have an
external
and
remote
removed
from
1 0 (all
a
mile
enable
volumes
low
current
drops
equipment
audio
their
that
of
wire.
and
remote
50
(greater
due
and
does
mA.
keep
to
will
2/92
Rev.
1.1
Page
4
DESCRIPTION
/ Clear-Com
MS-222
2-Channel
Main
Station
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PageS5
DESCRIPTION
/
Clear-Corn
MS-222
2-Channel
Main
Station
1.1
MS-222
The
microphone
features
The
microphone
The
greater
The
channels.
head-set
Monitorina
OVERALL
MS-222
excellent
MS-222
MS-222's
than
MS-222
or
The
front
speaker
up
the
appropriate
B).
Either
tying
the
of
'Talk"
It
DESCRIPTION
is
a
rack-mount,
(MS-222GM),
speech
contains
preamp
four-watt
110
provides
supports
6
remote
System
panel
for
use
channel
two
channel
two
is
optimized
power
dB
SPL.
DC
and
speaker
of
the
by
the
"Listen
may
channels
selection
two-channel
regulated
intelligibility
mic
preamps
for
amp
voltage
monitors
MS-222
operator.
be
together).
and
two
stations.
has
Level"
monitored
on
the
power
in
all
with
the
type
can
drive
the
ability
intercom
one
headset
The
operator
volume
separately,
These
station.
main
station
supply
noise-levels.
volume
and
limiters
of
microphone
a
standard
to
talk
lines
connector
monitors
controls
controls
for
containing
(one
or
with
a
speaker,
a
versatile
each
microphone
used
Clear-Com
&
listen
on
as
and
the
intercom
for
Channel
both
simultaneously
are
always
optional
monitoring
input.
with
it.
headset
two
separate
many
as
a
panel
mounted
channels
A,
one
active
goose
system.
Each
to
levels
30
remote
turning
for
Channel
(without
regardless
neck
It
S
The
speaker
The
jack
headset
Dual-Action
Each
channel
momentarily.
Pressing
off.
The
"Talk"
Staae
Announce
The
"STAGE
chosen
back
panel.
The
Stage
channels.
The
"STAGE
pressed.
muting
a
may
be
marked
connector.
"Tak
the
button
microphone
This
The
local
"Earphone"
Butons
has
its
button
will
(Paging)
ANNOUNCE"
Announce
mute
ANNOUNCE"
1
amp
monitor
turned
It
can
be
own
"Talk"
quickly
preamp
will
illuminate
button
button
function
button
contacts
speaker).
on
and
is
connected
used
button
"toggle"
dimly
on
to
the
balanced,
also
mutes
can
be
also
can
be
off
with
for
monitoring
which
the
when
the
front
the
defeated
activates
used
a
separate
in
parallel
or
can
either
"talk"
function,
activated.
panel
line-level
operator's
with
an
a
SPDT
for
any
user
front
panel
with
the
earphone
recording.
"Latch"
alternately
sends
the
Stage
Announce
voice
output
internal
from
desired
switch.
on,
signal
to the
user
"C"
relay
control
circuit
or
operate
turning
from
selectable
it
the
output
intercom
when
function
of
the
on
or
on
the
jumper.
(i.e.
11/90
Sidetone
Rev.
The
of
the
1.0
"Sidetone
operators
Adjust"
own
voice
controls
as
for
each
heard
channel
in
the
Page
on
headset.
6
the
front
panel
allows
adjustment
DESCRIPTION
Sianalmna
Call
Visual
headsets
button
lights
I
Clear-Com
Signaling
"Call"
turned
or
each
for
all
stations
at
MS-222
attracts
their
off
channel.
that
on
2-Channel
the
speakers.
Pressing
channel.
Main
attention
The
desired
the
"Call"
The
Station
people
of
MS-222
channel
is
active
who
panel
front
button
regardless
have
turns
removed
provides
the
on
talk
of
their
"Call"
a
"Call"
status.
a
When
that
with
Proaram
MS-222
The
monitored
adjustable
external
The
channels,
interrupted
LINKinh
Remote
Power
Channen
A
front
channel
and
Mi-K*ll
MS-222
The
remote
power
DC
Sunnlv
MS-222
The
from
A
short-circuit
general
"Short"
automatically
accepts
the
in
with
program
mixes
and
the
by
switch
B
together
Funtion
provides
from
Protection
power
or
5V
11
sensor
within
station
the
Tbaethe
both
overload.
remote
station's
Input
panel
stations.
a
current
illuminates.
sends
channel
headset
"Program
"TALK"
Momentarily
230V
lights
a balanced,
speaker.
or
is
also
the
with
for
provided
is
a
for
ability
the
channels,
supply
to
is
(selectable)
protect
If
a
Removing
seconds.
5
signal,
Call
a
brightly,
mic-level
Program
allows
that
turn
to
AC
system
occurs,
short,
knob
signal.
intercom
off
the
the
mains
Monitor
assignable
intercom
particular
a
combined
pressing
clearing
regulated,
the
short
the
the
in
lamp
the
whether
and
channel.
current-limited,
from
will
or not
line-level
or
volume
front
the
on
adjustable
The
operator
the
system
open-mics
any
Channel
function
'talk'
supply.
miswired
red
the
cause
for
program
A
RMK
The)
LED
the
button
'Talk"
channel
the
program
the
panel.
level
in
feed
instantly
to
consisting
Series
on
button
all
of
provides
and
MS-222
cable
the
on
power-supply
is
input
operator's
either
to
can
conned
of
500
will
belt-packs.
the
has
shorts
or
panel
front
associated
selected.
which
listening
or
both
to
set
be
channel
channels.
both
belt-pack
remove
volts
30
automatic
an
in
the
marked
to
reset
can
be
the
DC
lines
itself
be
at
is
A
1
or
05/92
System
The
channels
Easy
The
wired
with
Eay
The
supplies
1.1
Rev.
Termination
MS-222
Interconnection
MS-222
in
standard
System
MS-222
provides
and
A
provides
parallel)
mic
Expansion
can
multiple
for
B.
and
individually
three
three
(see
cable
ganged
be
two-channel
selectable
3-pin,
Channel
for
next
together
systems
XLR
male
B.
section).
with
Page
audio
outputs
Intercom
MS-222's
other
back-up
and
7
termination
Channel
for
signals
are
other
or
power
networks
A
(connectors
from
fed
Clear-Com
support.
for
the
both
are
MS-222
power-
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