RTS BP300 Servisní příručka stáhnout pdf (Strana 6)

II.

SYSTEM

INSTALLATION

Headsets

The

CP-300's

dynamic

headset

input

is

a

4-pin,

male

XLR.

To

insure

proper

level

and

performance,

the

dynamic

headset

(or

handset)

should

have

the

following

characteristics--

Mic

Impedance:

150-250

ohms

Mic

Output

Level:

-55

dB

Ear

Element

Impedance:

50-2000

ohms

The

dynamic

headset

connector

pin-out

is:

Pin

1:

mic

common

Pin

2:

mic

hot

Pin

3:

headphone

common

Pin

4:

headphone

hot

NOTE:

Do

NOT

connect

headphone

ground

and

mic

ground

together

at

any

point.

The

CP-300

also

accepts

a

standard

carbon

mic

headset,

and

provides

a

1/4"

phone

jack

for

the

input.

The

carbon

headset

should

contain

a

50

ohm

carbon-type

microphone,

a

600-1000

ohm

earpiece,

and

the

cord

should

be

terminated

in

a

1/4",

3-conductor

(ring/tip/sleeve)

phone

plug.

The

carbon

headset

connections

are:

Tip:

mic

hot

Ring:

headphone

hot

Sleeve:

ground

Interconnect

Cable

Use

standard

2-conductor

microphone

cable

to

interconnect

the

CP-300

with

other

belt-packs

or

the

TW-12.

You

can

use

unshielded

cable

where

AC

interference

is

not

a

problem.

We

recommend

rubber-insulated

and

jacketed

cable,

such

as:

Belden

8413

or

equivalent

(24

ga.,

stranded

conductors)

for

lines

running

up

to

500

feet

in

length;

Belden

8412

or

equivalent

(20

ga.,

stranded

conductors)

for

lines

running

500-5000

feet

in

length;

Belden

8428

or

equivalent

(18

ga.,

low-capacity)

for

lines

greater

than

5000

feet

in

length.

FIGURE

1:

System

Interconnection

CP-300's

in

2-CHrmode

CS-210

TW-12

A

13

TO

OTHER

TW'

(loop-through)

STATIONS

RM-120A

KB-112

RS-10A

P-Box

lA

TO

B

3

CLEAR-COM

Typical

mixed

standard

and

'TW"

two-channel

system

(portable)

3

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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