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

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

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

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

0:0 0 ~0

0O

Ogg

9

01

F-1

0000 00

3°

OO

..

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~2

OO0

zj

IL

Z8

rlg

g

CE1

1^i

IL3

r

~

0

;>

C9

X

04

Oi

0.0000

0w

0< 0

00000

O N

dZ

54

IE 0

ot

Os

~~~0

ON

00

Ii

34

cmS

9

I

0

!tII:

§

CY,

_ _ _ _ _

11/90

Rev.

1.0

® 0i

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

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

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

mains

Monitor

assignable

intercom

particular

a

combined

pressing

clearing

regulated,

the

short

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

(see

cable

ganged

be

two-channel

selectable

3-pin,

Channel

for

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-

DESCRIPTION

1.2

TECHNICAL

/

Clear-Corn

MS-222

SPECIFICATIONS:

2-Channel

Main

Station

HEADSET

--

Dynamic

--

Input

--

Frequency

--

Gain

PANEL

--

Input

--

Frequency

--

Gain

MICROPHONE

Headset

Level

------

Response:

from

Headset

MICROPHONE

Level

------------------------------------

Response:

from

Headset

Input:

--------------------------

to

Intercom

PRE-AMP:

-------------------------

to

Intercom

HEADPHONE/SPEAKER

--

Load

Impedance:

--

Output

--

Distortion:

--

Frequency

--

Gain

Level:

from

PROGRAM

--

Input

Level

--

Input

Impedance:

--

Frequency

INTERCOM

--

Impedance,

--

Level,

Line

--

Sidetone

--

Crosstalk,

--

Noise,

Null

SN

-------------

Intercom

INPUT:

Response:

LINE

Station Ratio

--------------------------------

---------------------------------------

Response:

-------------------------

Line:

Ref.:

----------------------------------

---------------------------

--------------------------

DRIVE/RECEIVE

Output

(200

Load:

ohm

load):

Capability:

Induced

in

Listen

PRE-AMP:

------------------------

…--

--------

Line:

--------

AMPLIFIER:

---

-

----

CIRCUITS:

----------------------

---------------------

----------

Ch.

to

Ch.:

-------

Channels:

----------

Input

Impedance

55

dBv*

250

Hz

to

+41

dB

45

dBv*

nominal

250

Hz

to

+31

dB

8

Ohms

at

least

+20

<0.2%

THD

200-18KHz

+------

37

dB

-65

dBv*

>

1

KOhms

150

Hzto

>

10

KOhms

t

-9

dBv

(nominal)

>

25

dB

>60

dB

>60

dB

nominal

12

KHz,

12

KHz,

dBv*

at

+/-2dB

(mic)

18

KHz

(200Hz

-

1

KOhms

contoured

across

KHz

-15

dBv*

>100

-1 0

+5dBv

- 1

0

KHz)

for

600

ohm

(line)

KOhms

KHz)

(max

intelligibility.

(line)

before

clip)

INTERCOM Usable Total

Line

POWER

--

Output

--

Output

--

Output

--

Current

SYSTEM

Line

Quality:

Length

SUPPLY:

Voltage:

Ripple:

Noise:

limit:

-----------------------------

SPECIFICATIONS

---------------------------------

on

One

Channel

---------------------------------

-

--

--------------------------------------

CONNECTORS:

--

Intercom:

--

Program:

--

SA:

AC

POWER

PHYSICAL

--

Dimensions:

--

Weight:

--

Operating

*

-

OdBv

--

----------------------------------------

---------------------------------------------------

------------------------------

REQUIREMENTS:

SPECIFICATIONS:

-----------------------

------------------------------

Temperature

=

0.775

volts

Range:

RMS.

(Specifications

(STANDARD

-------------

-------

---------------

19"W

x

3.5"H

7.4

Ibs

(3.4

-

32-1

22

F

CLEAR-COM):

>

100

Stations

,

5000

feet

+30

Volts

<

1

mili

volt

AC

<

-70

dBv

AC

RMS

1.0

A

6

XLR-3

XLR-3F

XLR-3M

(3-CH

A,

105-125/210-250

x 1

0.0D

(483mm

Kg)

(0-50

C)

subject

to

change

RMS

3-CH

VAC,

x

89mm

without

B)

50

to

notice.)

60

Hz,

x

254mm)

60

VA

11/90

Rev.

1.0

Page

8

INSTALLATION / Clear-Com

MS-222

2-Channel

Main

Station

SECTION INSTALLATION

2

OF

2.1

INSTALLATION

The

MS-222

supply. Installations can The

fundamental concept

provide

termination.

KOhms.

The

termination

4.7

KOhm

audio

frequencies

high

DC

too

much

The

DC

impedance The

receive or

reject

(null) null' circuit Variations

THE

MS-222

2-CHANNEL

OVERVIEW

is a

combination

of a very

depending

vary

of Clear-Com

high

impedance The line

of

that

is

paralleled

current sourced signals

drivers

an

intercom

in a

line

with a 10

is

220 Ohms.

The

resistance allows a CALL

current. A CALL

source

and

for

this

not

affecting

"listen"

any "talk"

depends on a known

in

impedance on

signal

CALL

section

signal

the

signal

the

audio

of

stations contain a 'hybrid

being

impedance

line

MAIN STATION

versatile

on

what

Party-Line intercom

station

is a

have

(or

channel)

uF

capacitor.

DC

resistance

voltage

to

DC

voltage

is

also a current

a

be

signal.

sent by

that station

on

upset the

'null'.

intercom

station

features

into a single

source

is

placed

impedance

a 220

Ohm

The

impedance

of

the network

on

greater

than

source

on

that

the

intercom line

are

used.

is

that

common

resistor

the line

10

there

null'

circuit

channel.

to

and a system

all

stations

power

system

greater

of

is 5

than

10

in

series

with

the network

KOhms.

The

without drawing

volts

on

the

line.

by providing a high

that attempts

The

'hybrid

accomplish

this.

a

at

to

Clear-Com networks on termination possible double null

circuits.

CAUTION:

not

to

must be

CLEAR-COM Clear-Com relate

main

all

will

oscillation

or

multiple

All

fail

to

terminated

party-line intercom

to

system

A.

MAIN

B.

MASTER

C.

REMOTE

terminate

STATION

STATION:------

and

some remote

intercom

be

output

provided.

of

line

drivers,

terminated

Clear-Com

to

Intercom lines

or

to

keep

the

stations

lines.

It is

An

unterminated

and

sever

line

will

cause

'double'

terminate a line.

line drive

up

must

circuits stable.

TYPES:

powering

and

stations termination.

Supplies

Provides

all

fall

system

switch

STATION: -Contains a power

-

Provides switch

STATION: -No

-

May

power

or

may not

supply.

provide

unbalance

low

The

switch

to

the

user

line

will

levels

be

terminated.

into

one

four

types

power

selectable

to

determine

cause

excessive

of

hybrid

and

sever

Care

All

unused intercom

of

four distinct catagories

are as

for

external

selectable terminations.

supply

selectable

have

just

Derives

power

terminations.

for

itself.

line

terminations.

from the intercom line.

termination

where

levels,

null

networks.

unbalance

must

be

follows: stations.

the

of

hybrid

taken

inputs

A

that

11/90

Rev.

1.0

D.

POWER

SUPPLY:

---

Supplies

---

Provides switch

system

Page

fower

selectable

9

for

external

terminations.

stations.

INSTALLATION

/

Clear-Corn

MS-222

2-Channel

Main

Station

SYSTEM multiple

STATION

TERMINATIONS

ON

Clear-Com STATIONS

provide

POWERING:

REMOTE

through

RS-501

i

power

that

1 A of

STATIONS.

the

>

supplies

can

current.

Typical

intercom

CC-758

Typical

can

operated

be

Clear-Com

REMOTE

The

cable.

RS-501

Single

paralleled

be

in a system.

systems

CC-75B

Power

to

consist

STATIONS

RS-5O1

4

Source

increase

The

System

the

MS-222,

the

CC-75B

and

MAIN

TO

2FLTPACO

of

are

powered

CC-75B

MAIN

a

STATION

from

RS-501

~~~~~~~~~~~~~~KB-111A

REMOTE

number

CS-222,

of and

the

PS-22

will

OTHER

S

simply

By

current

power

Wor

TERMINATIONS

capacity

source

2ng

ON

connecting

of

the

need

would

system

RS-SO1

M

CC-75B

PS-22

a

system

to

3

Itw

or

another

is

raised

the

be

in

21

more

RS-5O1

MS-222

2

to

OFF

.wer

CC-75B

TERMINATIONS

in

A.

The

position.

supDDII

RS-501

parallel

with

termination

Lb

NOTEQTe

CC-758

RS-501

OFF

an

existing

switches

fnction

f

RS-501

CC-75B

MS-222

in

the

CC-758

RS-501

the

second

not

Mill

CC-752

BELTPACKS

TOOTHER

BELTPACKS

OR

PRODUCTS

05/92

Rev.

1.1

System

With

Multiple Power

Page

Sources

10

INSTALLATION

2.2

CABLE

The

Clear-Com

channel conductor

return considerations

/

Clear-Com

CONSIDERATIONS:

of

intercom. One

carries

for

audio

MS-222

intercom

the

DC

and

power.

in

mind:

2-Channel

is

intended

line

conductor

power

for

When

Main

to

run

carries

remote

choosing

stations.

Station

shielded twisted

on

a

full

duplex

interconnect

("two-way")

The

shield cable,

audio,

is

used

keep

pair

for

the

of

cable

other

the

ground

following

per

1.

DC

resistance

longer resistance location)

2. side-tone (capacitance containing

PORTABLE

Typical

microphone acceptable.

Portable connectors;

or input Chaining installation.

than 1 00

to

The

capacitance

cable

remote

"loop-thru"

by

three

and

of

the

ground

feet

do

not

of

the

ground

any

point

of

stability.

between

5000

feet

INSTALLATION

portable

for

cable.

when

For

runs

stations

installing

connected

output

Line-Splitting

return

in

the

the interconnect

capacitance

Total

conductor

of

cable

system

runs

longer

such

along

Line-Splitter

or

common

wire

use

(the

combined

system

CABLE

less

than

a

system

decreases

should

and

at

50

pF per

interconnections

than

feet

500

as

belt-packs

that

interconnect

one

(OP-1

conductor

smaller

be

cable

affects

should

shield)

foot.

feet a cable

500

use a 20

have a pair

includes

00)

that

the

amount

affects

20

than

under

not

equivalent

gauge.

parallel

1.5

system

greater

be

is

flexible,

gauge

these,

Clear-Com provides

path. can also

cable

of

crosstalk.

The

total

all

sum

ohms.

to

made

cable or

of input

they

simplify wiring.

required

shields

of

frequency

0.25

than

an

intercom

two-conductor,

of

24

gauge

and

be

can

For

runs

to

a

response uF

system

shielded

wire

is

larger.

output

"daisy-chained"

a

one

Daisy-

and

simplifies

and

the

PERMANENT

Vinyl-jacketed

low-capacitance

greater

runs necessary.

Multi-pair systems. of

the

cable to

INSTALLATION

shielded

than

that

cable

For

cross-talk considerations

produce

20

500

gauge

is

CABLE

pair

is

the

wire

for

feet.

Placing

individually

the

lowest

cable

of

runs (under 500

short

cable

the

shielded

the

possible

for

conduit

must

path

for

permanent

choice

in

is

acceptable for shields DC

installations.

and

use

in

together

return.

1 8 gauge

multi-channel

feet)

is

recommended

be

tied

ground

but

on

Use

cable

not

both

a

for

ends

11/90

Rev.

1.0

Page

11

INSTALLATION

2.3

REAR

/

Clear-Com

PANEL

MS-222

DESCRIPTION

2-Channel

Main

Station

1.

Power The

AC

is

a

rocker

2.

Power Just

below

power

3.

Power Just

below screwdriver fuse

block

(S~rM~0

Switch

"Power

switch

Connector

the

power

input.

Voltage

the

EIA

in

the

will

release

Switch"

with

a

switch

Select

receptacle

slot

between

from

is

located

"1"

and

MS-222

on

mark

for

is

an EIA

Fuse

Block

is a plug-in

the

connector

the

connector.

Fij

Rear

the

on

and

power

Panel

top

left

"0"

receptacle

fuse

block.

and

corner

for

off.

the

of

the

for

By

placing

block

rear

either

and

twisting

panel.

115

a

flat

or

230

blade

slightly

The

VAC

switch

the

Complete in

value

By

turning

voltage

E

the

oln

4.

Intercom There

are

Standard

5.

Termination Each

intercom

termination

MAIN

stations

CAUTION: ONE

TERMINATION

COM

LINE

OPERATION.

removal

regardless

the

block

range.

The

selected.

Line

Connectors

two

sets

Clear-Com

Switches

channel

of

the

intercom

connected

FOR

PROPER

DRIVERS

of

the

of

the

over

vo

tage

of

three

wiring

is

BE

DEPEND

block

will

give

AC

voltage

when

replacing

rangn

that

XLR-3M

is

as

follows:

provided

line.

to the

OPERATION

PRESENT

with

The

inter-corn

ON

access

applied.

it

in

iua

intercom

Pin Pin Pin

a

'Termination"

switch

is

line. IT IS

ON

A

CLEAR-COM

A

KNOWN

to

both

fuses.

the

receptacle

rignI

side

U

connectors

1

--

Ground

2

-

+30

3 -Intercom

provided

IMPERATIVE

LOAD

for

VDC

switch

in

INTERCOM

VALUE

Both

will

on

both

Audio

case

THAT

fuses

convert

theI

bottom

channel

allowing

there

are

ONE

LINE.

FOR

PROPER

are

the

input

oflt

outputs.

easy

multiple

AND

identical

bI

Nk

ONLY

CLEAR-

11/90

Rev.

1.0

Page

12

INSTALLATION

/

Clear-Com

MS-222

2-Channel

Main

Station

6.

Announce The

"Announce"

output Wiring

7.

Announce

impedance,

as

is

The "Announce" contacts

8.

Program The

Winng

9.

Program

The

are

"Program"

as

is

"Program

Output

follows:

Relay

"Form

Left Center

Right

Input

follows:

Gain

Input Gain

Connector

output

is a XLR-3M.

and

has

Pin 2 --

Pin 3 -

Contact

relay

contacts

C"

(break

----

most

-----

most

Connector

is

a

input

Pin 1 -Pin 2 Pin 3 -

Switch

output

an

1

--

Ground

-Audio

+Audio

Terminals

are

before

---

N/O

C ---

--

N/C

---

XLR-3F.

Ground

-Audio +Audio

Switch"

The

level

available

make).

Normally

Wiper

Normally

It is

an

electronically

located

is

output

is

transformer

approximately

of

on a screw

contact

The

Open

Contact

Closed

to

the

isolated,

dBv.

0

terminal

description

balanced

"Program

600

block.

is

The

as

follows:

(differential)

connector.

Input"

ohms

relay

input.

In

the

"Mic"

produce uses.

the

"Line"

In

signal

input

position

a

usable

position

will

the

from

level

the

produce

will

input

a

input

a

nominal

accept

-65

dBv

presents

intercom

a

'low' impedance

signal

level

for

on

input

balanced

a

monitor

high

impedance

intercom

an

dynamic microphone

a

-15

line feed

dBv

and

intercom

and

line.

and

11/90

Rev.

1.0

Page

13

INSTALLATION

/

Clear-Corn

MS-222

2-Channel

Main

Station

"CAUTION

IQ

Operating

2.4

INTERNAL

ACCESS

To

access removed. screws

These

avoid

electric

Instructions OPTIONS

TO

INTERNAL the

Remove

on

the

servicing

shock

internal

the

top

of

the

instructions

AQ

n

unless

AND

ADJUSTMENTS

OPTIONS

options

two

and

screws

station.

ame

perform

Y

AND

an

are

Qualified

ADJUSTMENTS:

adjustments

on

either

side

Remove

the

for

mu

servicing

to

the

cover

of

the

cover.

S~-Zzz

by

qtr

d

js:

of

station.

MU2

ualfied

tha

the unit

Remove

service

n

must

psnnel

contained

be

the

four

COMPONENT

SIDE

in

ni

itn

11/92

1.

JP-1 Jumpers

intercom

The for

lines jumpers the

2.

JP-3 Jumper "Talks".

the

3.

Power Potentiometer

power as

close

Rev.

1.3

and

JP-2 JP-1 cable

"S"

position

in in

jumper

Interrupt

JP-3

Position

factory

Supply

supplies

as

Location

Line

Length

and

JP-2

lengths.

of

the excess the

of

"L"

position.

500

completely.

Enable/Disable

allows

with

"'r

JP-3

the

is

in

Voltage

P3

is

provided

are

intended

possible

to

of

Selection

allow

the

JP-1

is

for

jumpers

feet

For

is

The

very

Jumper

user

to

enable

for

yes

to

the

'Y'

position.

Adjustment

for

to

be

each

other

Jumpers

and

Jumpers

optimization

channel

for

A

'short'

MS-222

short

total

the

"Stage

muting

trim

and

adjustment paralleled for

proper

Page

14

Adjustments

of

the

hybrid

and

JP-2

lines

(200

is

shipped

line

lengths

Announce"

"N"

for

no.

of

the

on

the

same

sharing

of

is

for

-

500

from

The

+30

line

current.

on PCB

null

circuitry

channel

feet). the

(less

mute

B.

The

factory

than

function

MS-222

volt power

their

outputs

for

excessive

"L"

position

with

200

ft)

is

shipped

supply.

should

the

remove

of

active

from

If

is

be

INSTALLATION

2.5

INTERCONNECTION

Clear-Corn

/

MS-222

SETUP

2-Channel

Main

Station

After determining

MS-222; the the

it

can Power Block page

12

i it

1.

Use

be

needs

standard

BENDS

for

units

2.

Route all

assignments

Pin 1 Pin 2 Pin 3 -

3.

Route

electric

4.

In

permanent installations,

ACCORDANCE

5. If

program

Input

operator

the

program

is

switch-selectable

input

impedance

position.

system

anywhere

on

the rear

changing.

IN

THE

cable

cables

Common +30 Intercom Audio

cables

motors,

monitoring

(3-pin

femal)

can

signal)

or

is 1

configuration

as

long as

panel

for

the

shielded

mic

CABLING;

extending

from the

ALL

on

Volts

away

or

from

Main

3-pin

intercom

DC

from

heavy

power transformers.

BE

APPROVED

WITH

is

required,

connector

hear

the

program

be

sent

to

(on

the

line-level

00K

(-15

Ohms

in

and channel

it

is

provided

proper

cable

(see

ALLOW

assignment,

with a source

AC

voltage

section

AT

LEAST 3 inches

rear panels.

Station

to

the

connectors

AC

power

sources, such

SURE TO

INSTALL

LOCAL

on

in

either

rear

panel)

connect the MS-222

the

intercom

the

headset mixed

line.

for

either

dBv nominal). The

the

position,

line

pick a location

range.

ALWAYS AVOID

2.2).

Remote

Stations.

are:

THE

BUILDING

external rear

signal

panel.

with

The

program

mic level

input

is

600

Ohms

for

the

of

AC

power. Check

See

section

2.3

on

SHARP

behind rack-mount

as

lighting panels,

SYSTEM

IN

CODE.

to

the

Program

The

station

intercom

(-65 balanced nominal

activity

pre-amp's

dBv

nominal

and

the

mic

in

gain

or

6.

If

the

Stage.

(3-pin

male transformer the

output

common If

the

(NO or

to

contact at

7.

Turn

panel

Sidetone

be

(pin-2

SA

relay

NC)

controlled.

rating

120 VAC.

on

power

should

levels

NOTE ABOUT

Mic

Type

Impedance

Output

Headphone Impedance

Announce function XLR)

connector

balanced,

is

to

be

to

is

depending

of

switch on

illuminate.

HEADSETS:

----

--

--------

--

600

used

pin-1).

to

be

used,

on

The relay

the

relays

as

desired.

Dynamic

150-250

-55dB

--

Dynamic

50-2000

Ohms

as

an

what

is a form

the

Plug

The

Ohms

used,

to

be

MS-222

on

is

the

impedance,

unbalanced

connect

are

rear

in

to

the

action

is

needed

C,

Break

IA

resistive

panel. The GREEN

headset,

a

following

is a description

Wiring:

connect

rear

panel.

and

an

source

connect

appropriate

for

the

before

at

24

and

set

intercom,

1

--

2--

Pin 3

--

4

--

to

the

Announce

This output

output level

one

screw external

Make,

contact.

VDC

or

Power

of 0 dBv.

side

lug

terminals

equipment

1/2A

resistive

led

on

is

to

the f ront

Program,

of a recommended

mic

common

mic

hot headphone headphone

common

hot

Output

NOTE:

and

headset.

If

the

11/90 Rev.

1.0

Page

15

INSTALLATION

/

Clear-Com MS-222 2-Channel

Main

Station

TYPICAL

MS-222

KS-AI0I

A

~

SYSTEMS:

8 KB-IIIARS

~

RSS

zo~~~~~~~~~~~~~~~~~~~

C75

Sa

RS-Sol

C-s

K

-S-5OB

CC-75D

RS-SDI

CC-753

c-753

~~~~~S502

-0

cc-uoe

_____

____

____ ____ __

-111Ai

KD-1IIA

K111A

KB-liA

RS-502

WP-2

=-2

BS-X

111 111:!

KD-I1IA

WI-2

CC-20

)HS-6

RSX

Wi-2

CC-2408

11/90

Rev.

1.0

Page

16

OPERATION / Clear-Com

MS-222

2-Channel

Main

Station

SECTION

Normal intercom press the

each

3 / OPERATION

operation

Talk

of the

set

switches

control.

OF

THE

MS-222

the

when

MS-222

Listen

talking.

2-CHANNEL

only

requires

Level

controls

The

o

rest

(I~~@

INTERCOM

access

to the

front panel

for

each channel to desired

of

this

section

is a detailed

0

I~

~ ~~

. .

0 11X

OE)C

STATION

controls.

For

level

and

description

of

11/90 Rev 1.0

@ _

~00.0

s _ .4~cr

0000

0f

Page 17~~00000000

0~~~o~~~o0

0<C \

S

@000

0

00

11 (s,

11/9 Re.

1

ages1

OPERATION

/

Clear-Com

MS-222

2-Channel

Main

Station

*

3.1

FRONT

1.

Talk

Buttons

Each

channel

to

a

given electrically button

LATCHING: off.

MOMENTARY: press

function button

TALK activated.

CALL received

2.

Call

Each send

for

is

into

will

is

INDICATION:

Buttons

channel

a

"Call'

that

channel.

PANEL

has

channel.

the

button

pressed.

Pressing

a

momentary

turm

off.

pressed.

on

that

channel.

has

signal

DESCRIPTION

its

own

illuminated

Mechanically

has

dual

action

the

button

the

button

its

on

function

In

any

The

own

that

case

'Talk"

button

'Talk"

button

"Call"

button.

channel

such

the

"Talk"

the

pushbutton (momentary

quickly

wil'loggle"

for

longer

that

'Talk"

will

Pressing

regardless

button

for

is

or

than

when

the

function

illuminate

the

of

the

activating

momentary

latching)

the

1/4

button

is

activated

dimly

brightly

"Call"

activation

depending

"alk"

second

is

released

indicating

when

button

function,

of

the

microphone

in

action,

will

turn

all

of

the

when

a

"Call"

at

any

the

"Talk"

however

on

how

alternately

the

button

the

'Talk"

time

the

a

'Talk"

signal

time

will

circuit

feed

the

turning

is

it

on

or

The pressed

3.

Listen

Each

controlled

listen

4.

Side

Each

the This

loading. rotate

If

the feedback control.

"Talk"

button

indicating

Level

Controls

channel

to

Tone

channel

microphone

control

the

speaker

has

by

any

a

channel,

Controls

has

is

a

For

headphone

control

and

path

it

for

that

the

presence

a

separate

logic.

turn

the

a

"Side

that

is

heard

true

hybrid

clockwise

panel

will

be

necessary

channel

To

Tone"

use

microphone

of

"Listen

listen

to

control

null

in

the

null

control

h

is

best

to

obtain

will

a

completely

earphone

to

illuminate

"Call"

signal

Level"

a

channel,

control.

and

to

find

the

desired

are

used

use

an

brightly

on

control.

turn

up

off.

This

control

from

that

therefore

the

'null' side

together

almost

complete

while

the

line.

Listening

the

appropriate

is

used

channel.

is

sensitive

for

a

given

tone

level.

providing

'null'

the

"Call"

is

always

to

channel

a

button

control.

to

set

the

changes

possible

of

the

on

and

amount

and

side

is

not

To

not

in

line

then

acoustic

tone

of

11/90

Rev.

1.0

Page

18

OPERATION

/

Clear-Com

MS-222

2-Channel

Main

Station

Remote

5. It

sometimes

in a system.

pack

the Pressing

microphones CAUTION:

other

place of

the

affected

6.

Program

MS-222

The

channels

turned

In

the

ON

the

OFF

In In

the

INT channel. dressing

Mic

Kill

Bufton

becomes

Clear-Corn

removed

is and

holding

at

all

Series

CANNOT

RMK

the

than

channel.

Enable

independently.

ON,

position

This

room

Switches

the

has

or

OFF,

the

position

the

"Program

show monitor

desirable

Series

momentarily

the

RMK

500

be

station.

local

EMK

to

ability

ON

program is

the

program

feed

The

"Program

with

INTERRUPT.

program

Interrupt"

applications.

in

an

intercom

beltpacks

500

the

microphone

for

button

behtpacks.

The

fed

is

fed

or

if

RMK

works

external

an

to

not

fed

except

NIFW

power for

Enable

the

used

oni

is

system

have

several

action

frm

program

Switch"

channel

to

the

when

function

to

turn

the

feature

circuits

wTalk"

signal allows

under

*Talk"

be

can

will

MAIN

seconds

channel

a

momentarily

singla

a

channel.

a

off

all

that

will

reset

is

derived

shorts

station

to

either

the

all

conditions.

is

activated

for

used

open

microphones

DC

if

the

be

turned

all

open

from

the power

systeml

of

the

program

to

the

cueing

talent

power

off.

some

two

be

to

line

and

7.

Program

Each being

8.

Headset

The MICROPHONE:

about HEADPHONE:

Clear-Com muff.

g.

Earphone The This

Speaker

10. The

11.

Mic

The

Send

channel

sent

Connector

"Headset"

200

marked

jack

output

switch

Select

Mic

Select

Level

a

has

to that

ohms.

Jack

ON/OFF

channel

connector

The

headsets

"Earphone"

is

capable

marked

Switch

Controls

"Program

when

is

a

MS-222

MS-222 is

are 400

of

driving

Switch Speaker

enables

Level"

Send

program

the

XLR-4M

intended

is

designed

for

ohms

provides

an 8

ohm

ON/OFF is

the operator

control

is

wired

for

to

work

to

drive

the

single

an

output

headphone

used

to

that

sets

activated.

standard

a

with

a

50

to

muff

and 200

intended

or

turn

the speaker

which

select

the

amount

Clear-Corn

dynamic

1000

to

loudspeaker.

microphone

ohm

headphone.

ohms

an

drive

on and

microphone

program

of

headsets.

for the

extra

dual

earphone.

off.

is

active.

of

05192

Rev.

1.1

Page

19

OPERATION

12.

Link The channels B channel.)

operate.

/

Clear-Com

Switch

switch

A

are

totally

When

The

MS-222

marked

and

B

so

isolated

in

channel

"Link"

that

and

the

"A+B

B

2-Channel

on

the right

all

stations

controls

Link"

have

on

operating

Main

side

can

talk

one

channel

no effect.

Station

of

the

to

each

mode,

unit

allows

other.

cannot

only

the

(Normally

talk

the

channel

operator

to

stations

to

channels

on

A

controls

"combine"

A

and

the

other

NOTE: 'combine'.

internally

putting station

CAUTION:

the

system

SWITCH TERMINATION. causing

13.

Program The directly headphone

14.

Stage

The

microphone

speaker/amplifier also

"SA"

When

disconnected

all

stations

terminations.

"line

terminations"

equipped

ON

significant

"Program

in

the headphone

Announce

"Stage

available

button

the

switch

What

really

on

The

LINK

with

THE

STATIONS

Both

sidetone

Monitor

or speaker

Announce"

input

is

Control

Monitor"

Button

to

directly

in

another

that

can

pressed.

is

in

the

happens from

the

channel

function for a

double

volume

and

(SA)

be

will

the

system.

"LINK"

switch,

THAT

line

mis-adjustments

control

or

speaker.

does

button

talk

to a system

room.

used

to

"A+B"

position

is

the

three

B

circuitry

A

party-line.

work

properly

If

there

DO

ARE

NOT

termination

sets

This

not

affect

allows

the

A

dry

set

activate

external

the

channels

B

channel

and

connected This

maintains

at

the

is

more

NOT

ATTEMPT

PROVIDING

and

station

and

possible

the

amount control "Program"

only

operator

external

of

relay

switching

to contacts

do

connectors

to

the

all

main

station

than

one

Main

TO

USE

THE

un-termination

feedback

of

the

program

affects

feed

to

the

what

to

the

instantly

intercom

on

as

needed

not

actually

are

simply

A

channel

the correct

that

is

Station

THE

LINK

LINE

will

and

oscillation.

signal

is

heard

intercom

use

the

such

rear

when

panel

lines.

as a paging

circuitry,

line

and

providing

in

the

result,

heard

in

the

is

the

Pressing

will

be defeated adjustments)

15.

Power There panel.

NORMAL OVERLOAD

about short

on

SHORT power

Lowering attempt

operation

the

SA

button

restored

Supply

are

every

the

CONDITION:

line

to

when

it

desired

LEDs

two power

OPERATION:

CONDITION:

five

seconds,

line.

has

a

direct

an

excess

reset

the

to

the

power

momentarily

the

button

by

moving

supply

The

the

If

the

short

load

or

power

supply

disables

is

released.

an

internal

status

LEDs

GREEN

If

the

RED

load

is

in

RED

LED

on

ft.

removing

about

without

any

The

jumper.

in

the lower

LED

is

LED

is

excess

is

on

and

a

short

will

once

every

operator

active

"Talks".

"Talk"

muting

(see

section

right

on

by

itself.

on

and

the

of

1

ampere

the

GREEN

allow

the

four

seconds,

intervention.

Active

action

on

internal

hand

corner

GREED

but

there

LED

automatic

to

can

LED

is

does

reset

restore

"Talk"

be

options

of

the

pulses

not

a

not

pulse

circuit

normal

circuits

and

front

on

shortly

direct

on,

to

the

11/90

Rev.

1.0

Page

20

TROUBLESHOOTING

/

Clear-Cam

MS-222

2-Channel

Main

Station

SECTION

Symptom

/ TROUBLESHOOTING

4

is

#1:

CAUSE: REMEDY:

#2:

CAUSE:

REMEDY:

CAUSE: REMEDY:

System

short

Loss Plug

Fuses Replace

internal

The

periodically.

Shorted

Remove

Check

waft

Defective Check

non-operable:

not

led

is

AC

of

into

unit

could

fuse(s);

component

short

RED

or

mis-wired

cables,

for

shorts

for

several

Remote

MS-222

THE

illuminated.

power.

dependable

be

blown.

it

blows

If

failure.

led

stays

intercom

at

one

between

seconds

Station.

unit.

2-CHANNEL

GREEN

AC

source.

repeatedly,

illuminated

cable.

from

time,

a

1

pins

see

if

to

power

without

Main

2.

and

automatic

the

INTERCOM

is

led

probably

the

Station

removing

When

not

illuminated

the

powersupply

GREEN

faulty

until

will

reset

STATION

and

has

led

pulsing

is

line

possible

a

itself.

clear

the

RED

on

located.

short

Symptom

CAUSE: REMEDY:

CAUSE:

REMEDY:

#3: Excessive

Distance Move

Too Turn

open

Volume

Lower

from

closer

many

off

all

mics.

too

headset

back-ground

mouth

to

mic

to

mic.

entire

on

mics

unused

high.

in

mics.

volume.

noise

is

system.

RMK

pick-up

far.

too

be

can

by

microphone.

to

used

kill

all

Series

500

belt-pack

11/90

Rev.

1.0

Page

21

TROUBLESHOOTING

/ Clear-Corn

MS-222

2-Channel

Main

Station

Symptom

CAUSE: REMEDY: CAUSE:

REMEDY:

CAUSE: REMEDY:

Symptom

#4:

Hum

Inductive

power

Relocate 10

Check any Printed

system the you area.

NOTE: OCCURS,

BOOM

inductive Move

#5:

System

or

buzz

pickup

lines

offending

Ohm

chassis

the

intercom

Wiring

ground

Main

Station

carefully

THIS

A

OF

pick-up

mic

away

feedback.

in

system.

caused

or

transformers.

unit.

ground

DC

resistance

connector.

Board.

check

IS

SHOCK

A

HEADSET

If

came

In

Earth

the

A POTENTIALLY

HAZARD

by

headset

from

"hum

by

close

resistor

for

10

R224

is

this

condition

contact

ground.

system

AND

GROUND.

mic;

field".

proximity

(R224)

Ohms

located

with Should ground

DANGEROUS

MAY

check

of

is

open.

between

on

happens

something

this and

EXIST

by

switching

Main

or Remote

the

chassis

the

Rear

Panel

it

Is

because

-HOr

occur, AC

BETWEEN

we

distribution

SITUATION;

mic

station

and

pin-1

Connector

the

with

respect

recommend

In

the

IF

THE

METAL

on

and

off.

to

of

to

IT

CAUSE: REMEDY: REMEDY: REMEDY: REMEDY: REMEDY:

CAUSE: REMEDY: REMEDY: REMEDY:

Symptom

CAUSE:

REMEDY: REMEDY:

Acoustical. Volume Two Headset Headset Headset

microphone

Electrical. Check Check A

headset

used

#6:

Audio

An Headset A

headset

used

too high

or

more

mis-wired. laying

quality.

Termination. sidetone

extension

with great

sounds

ultrasonic

mis-wired.

extension

with

great

at

one

station.

speaker

and earphone.

low

oscillation

on

table

Some

levels. care

and

care

stations

Rewire

and

headsets

cord

was

and

are

distorted

is

present.

Rewire

cord

was

and

are

have

mics

headset

microphone Adjust

not

headset

not

connector.

have

poor

sidetone.

used.

Headset

recommended.

and

the

connector.

used.

Headset

recommended.

on

simultaneously.

on.

Turn

mic

isolation

extension

Call

light

stays

extension

off.

between

cords

on.

cords

the

must

must be

be

11/90

Rev.

1.0

Page

22

PARTS

LISTING

/

Clear-Com

MS-222

2-Channel

Main

Station

SECTION

cQ

240039 210233 610022 480090

480092 480112 480171 480000 480001 480005 480026 480038 480053 480172 520035 240015 240038 390005 390038 390039 810142

730164 480012 480175

480070

480021

470019

470029

470061

470063

450004

240010

240058

500103

510028

510043 510095

510094 510096 510090 510093 560015 560016 480047

480061 480069 480052 480004

480050 480008 480173

5 / Parts

A

EPa

MS-222

for

List

Description

Bracket, Connector,

Power

Cord, CMOS CMOS CMOS CMOS Diode, Diode,

Diode, Diode, Diode, Diode, Diode, Fuse, Knob,

Zener, Zener,1 Zener, Zener,

1/4A

Volume

Handle, Lamp, LED, LED,

Incandescent Red Green

Manual, Microphone,

OP-AMR OP-AMP, OP-AMP, OP-AMP,

50K

POT,

2K

POT,

50

POT,

5K

POT,

SPDT

Relay, Rubber

Trimpot

Shaft, Speaker, Switch, Switch, Switch,

Switch, Switch,

Switch,

Switch, Transformer, Transformer, Transistor,

Transistor,

Transistor, Transistor,

Transistor,

2-CHANNEL

Hardware

Power

MC14584B

IC, IC,

DG211 4001 4013

1

Quad Dual

Signal

Rect. Rect.

N957B

IC,

IC, 1N4148, 1N4001, 1

N5401,

N5231

N5245B

1 1

N5251

SLO-BLO

with

Black

Square

Instruction

Panel LM384 LM833A

NE5532 NE5534A

Vert.

Trim

Horz.

Trim

Mount

PC

Horz.

Trim

24VDC

Foot

(Sidetone)

8

2

1/2"

Pushbutton

SPDT

Pushbutton

SPDT

SPDT SP3T DPDT 4PDT

Pushbutton

Toggle

Slide

Illuminated

SPDT

Audio

Power 2N4401 2N5486

2N5639 MPS-A05 MPS-A13 MPS-A55 MPS-A63 MTA30N0GEL

Handle

for

Entry

Hex

Quad

CJ

2

D

Type

1A

3A

6.8V

B B

20MM

1/8"

shaft

EL3522

(Short

(Power

Mount

Power

Dual

Low

Dual

Low

PC

Mount

PC

(Volume)

Mount

PC

Ohm

(Link)

(Program)

(Term.

(Stage

Channel

N N

Channel

INTERCOM

Module

Schmitt

Analog

NOR

Input

Flip-Flop

50V

PIV

OOV

1

.4W

5%

.5W

5.1V .5W

15V

.5W

5%

22V

(Talk

LED)

Good)

Assembly

Noise

Low

Noise

Mount

(Prog

(Volt

(Sidetone)

(Stage

(Call) 6A

(RMK)

Prog

&

Pushbutton

Announce)

JFET JFET

Power

STATION

Trigger

Switch

Gate

SW)

Lev.)

Adj.)

Announce)

Gain)

(Talk)

MOSFET

60V

30A

2 1

1 1 1

1

1 22

1 4 2 1 1 1 2 3

1 2

1

1 4

1

2

1 3 2

1 4 2

1

2 2

1 2 3 2

1

2

1

1 5 6 3

2

1

11/90

Rev.

1.0

Page

23

---------------------------------------------------------------

I.L

-

-I

I

---------------------------

i

m0

-

-L

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~N*0

----------

---

i

l

---

I

--

m

4

-

I

2

2~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-

--

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~L-----

fl~~~~~~~~~~~~~~~~~~~~~-

I

1.

a

-:

I.

a~~~~~~~~a

IR~~~~~~~~~~~~~~~~~~~~~~i-

C

~

I

ID

Oa-n

I -*0-~~~~~~~~~~~~~~~~~~~~~~~~~H-1

J

2~~~~~

--

- --

- -

-

--

----

-

'-

L

II

4

---

-

W

II

-g

.-.-

~

-2

-

2~~~~~~~~~~~~~~~~~~~~-

~

U~~~~o'

-

I

tl.I05

Clear-Com MS-222 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual