RTS BP300 Servisní příručka stáhnout pdf (Strana 3)

CLEAR-CON

CP-300

BELT-PACK

Operation

&

Service

Manual

ADDENDA

CP-300

"Call"

Signalling

(replaces

"Optional

Signalling"

section

of

Introduction

to

the

Belt-Pack;

page

1,

column

2)

The

signalling

option

for

the

CP-300

provides

a

visual

alert

for

users

who

aren't

listening

to

the

intercom.

Pressing

the

CP-

300's

CALL

button

sends

a

special

call-signalling

voltage

(either

a

20

kHz

tone

or

a

positive

DC

voltage)

onto

the

intercom

channel

currently

in

use. This

voltage

is

detected

by all

other

stations

which

are

switched

to

that

channel,

causing

their

call

lights

to

turn on.

The

2-channel/1-channel

mode-select

switch

sets

the

signalling

method:

a

tone for

2-channel

or

"TWi

operation,

or

DC

voltage

for

single channel

(standard

Clear-Com)

use.

The

signalling

option

requires

installation

of

a

switch/light

button

and

an

additional

PC

assembly.

Headsets

(see

System

Installation,

page

3)

The

headset

used

with

the

CP-300

should

have

a

rated

mic

output

level

of

-55

dBv.

CP-300

as

a

two-wire /two-channel

station

(see

System Installation,

page

4)

Using

the

CP-300

as

a

two-channel

station

requires

connection

to

a

TW-12

Interface

Unit

OR

connection

to

an

existing

"TW'

(two-

wire) two-channel

intercom

system.

The

CP-300's

side

panel

con-

tains

a

recessed

"mode-select"

switch,

which

must

be

set

to

the

"2-CH

MODE"

position

(refer

to

Figure

2

for

switch

location).

CLEAR-COM

810044

TW/5-85

REV

B

1 2 3 4 5 6 7 8 ... 13 14

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