RTS Systems PS8 Manuale utente

TECHNICAL

MANUAL

TM2809

/

0/N

9300-2809-00

Third

Edition

/

October,

1988

MODEL

PS8

Power

Supply

O/N

9010-2732-00

TW

INTERCOM

SYSTEM

RTS

SYSTEMS,

INCORPORATED

1100

West

Chestnut

Street

/

Burbank,

California

91506

/

Phone

818/566-6700

/

FSCM;

60572

TECHNICAL

MANUAL

Model

PS8

Power

Supply

a

PROPRIETARY

NOTICE

The

information

and

design

disclosed

herein

were

originated

by

and

are

the

property

of

RTS

Systems,

Inc.

RTS

Systems,

Inc.

reserves

all

patent,

proprietary

design,

manufacturing,

reproduction,

use

and

sales

rights

thereto,

and

to

any

article

disclosed

therein,

except

to

the

extent

rights

are

expressly

granted

to

others.

UNPACKING

INFORMATION

AND

INSPECTION

Immediately

upon

receipt

of

the

equipment,

inspect

the

shipping

container

and

the

contents

carefully

for

any

discrepancies

or

damage.

Should

there

be

any,

notify

the

freight

company

and

the

dealer

at

once.

The

shipping

Model

PS8

container

should

contain

the

following

components:

COPYRIGHT

NOTICE

Copyright

1988

by

RTS

Systems,

Inc„

Reproduction

in

whole

or

m

part

without

prior

written

permission

from

RTS

Systems,

Inc.

is

prohibited.

TECHNICAL

MANUAL

TM

2809

MODEL

PS8

POWER

SUPPLY

Ordering

Number

9010-2732-00

RTS

Systems

XUy

£arl..Number

1

9010-2732-00

l

9300-2809-00

1

9110-2044-02

1

9110-1609-02

4

description

Model

PS8

Instruction

Manual

Large

Rack

Ear

Small

Rack

Ear

Rubber

Feet

Printing

History:

First

Edition

September,

1981

j

Second

Edition

July,

1986

Third

Edition

October,

1988

This

manual

is

published

by

the

engineering

department

of

RTS

Systems,

Inc,

f

which

is

responsible

for

its

contents.

Written

by:

Dan

Register

Edited

by:

Kent

Power

Lianne

Sterling

Swanson

Address

all

communication

regarding

this

publication

to:

Director

of

Engineering

RTS

Systems,

Inc.

1100

West

Chestnut

Street

Burbank,

CA

91506

QUICK

TABLE

OF

CONTENTS

Unpacking

Information

Table

Of

Contents

iii

Warranty,.

v

j

Shipping

Information

.

v

i

Description

&

Specifications

*^.,....*.1-1

Installation

Operating

Instructions.....

3-1

Theoiy

Of

Operation...

Maintenance..............

Lists

Or

Replaceable

P^rts.6-1

Drawings...

™

..7-l

(,

'

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM;

60572

/

TM2809

/

Third

Edition,

October

1988

Page

ii

TECHNICAL

MANUAL

Model

PS8

Power

Supply

TABLE

OF

CONTENTS

Unpacking

Information

Table

Of

Contents,,,,.

Warranty.

Shipping

Information....

ii

iii

vi

SECTION

1:

INTRODUCTION

AND

SPECIFICATIONS

RefJNa,

Title

1.1

1.2

1.3

1.4

1.5

1.6

Introduction.,....

Powering...

Dual

Audio

Impedance.

Connections.

Package

.

PS8

Specifications..

Page

....

1-1

....

1-1

..,,

1

-

1

"

1-1

...

1-1

.,.

1

-2

SECTION

2:

INSTALLATION

Ref

No,

Title

2.1

Mechanical

Installation.

2.2

Outputs

..

23

Power

and

Input

power

Selection,

2.3.1

115/230

Conversion

Switch.

23.2

External

Fuse..

233

Internal

Fuse

..„

23,4

Power

Indicator

.

SECTION

3;

OPERATION

Ref

.

,

N

o.,

ms

3.0

Introduction,.,.,.

3.1

Front

and

Back

Panel

Controls

3.2

Tandem

Operation....,,,...,.

Pane

....

2

-1

....

2

-1

„„2-l

....

2

-1

.,,,

2

-1

.,,,

2

-1

Z.2-1

.,,.3-1

.,,*3-1

Z.3-6

SECTION

4:

THEORY

OF

OPERATION

Ref.

No.

Title

Pa

^

e

4.1

General

Overview....*.......4-1

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM:

60572

/

TM2S09

/

Third

Edition,

October

1988

TECHNICAL

MANUAL

Model

PSS

Power

Supply

TABLE

OF

CONTENTS

(Continued)

SECTION

S:

MAINTENANCE,

TEST

PROCEDURE

&

TROUBLESHOOTING

Ref.

No,

Title

5.0

5.1

5.2

5.2.1

5

-

2.2

5,23

5.3

5.3.1

5.4

5.5

5.5.1

5.5.2

5.5.3

5.5.4

5.6

Introduction..

Warranty

Information..

General

Maintenance

.

Safety

Considerations.

Access

.

Cleaning.

Input

Power

Selection..

Fuse

Replacement...

Test

Procedure

Set

Up.

Test

Procedure.,....,..

Initial

Inspection..

Safety

Check....

Power

Supply..

Performance

Check,.......,.,..

PSS

Troubleshooting

Chart

Page

..,5-1

...5-1

™

s

-i

...5-1

5-3

..5-3

...5-3

..5-3

,.5-3

.,5-5

SECTION

6:

LISTS

OF

REPLACEABLE

PARTS

Rgf.No.

Title

Pgge

6.1

Introduction...,^,...*..,^..

4

.

6.1.1

Division

Of

Parts

List

Into

Sub-Parts

Lists....*..

6-1

6.2

How

To

Obtain

Farts.6-1

63

Shipping

List.,..*........*.*.6-1

6*4

FS8

Final

Assembly..*.............6-2

6.5

PSS

Back

Panel

Assembly

..*.......6-2

6.6

PS8

Printed

Circuit

Board

Assembly..,*....*-....*.

4

.

6-2

SECTION

7:

DRAWINGS

AND

APPENDICES

Title

(Drawing

Number)

Page

Schematic*

Model

PSS

(SD2717),„„............„„,7-2

Assembly

Diagram,

Printed

Circuit

Board

(AS2717)...7-3

Model

PSS

Mounting

Options.*............

.

7

-4

Model

PSS

Installation

Drawing

(ID4G34)........7-5

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM:

60572

/

TM2809

/

Third

Edition,

October

1988

Page

iv

TECHNICAL

MANUAL

Model

PS8

Power

Supply

INDEX

OF

FIGURES

2-1

Outline

Drawing,

Mounting

Options.

2-

2

Outline

Drawing,

Model

PS8

Power

Supply.

3-

1

Model

PS8

Front

Panel.,...*.*...*.***.,*..*.*.

3-2

Model

PS8

Rear

Panel.*

.

*.

3-3

Model

PS8

Capacity,

Local.

3-4

Model

PS8

Capacity,

Long

Distance*.*...*.*

.

3-

5

Model

PS8

Tandem

Operation

Configuration

.

4-

1

Model

PS8

Block

Diagram.*..*...

5-

1

PS8

Test

Fixture.

2age

,...1-3

..,,

2

-2

...

3-2

...

3-3

...3-4

...3-5

...3-6

...4-2

...5-2

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM:

60572

/

TM2809

/

Third

Edition,

October

1988

Page

v

TECHNICAL

MANUAL

Model

PS8

Power

Supply

RTS

SYSTEMS*

LIMITED

WARRANTY

The

products

of

RTS

Systems,

Inc.,

a

California

corporation,

are

warranted

to

be

free

from

defects

in

materials

and

workmanship

for

a

period

of

one

year

from

the

date

of

sale.

RTS

Systems*

sole

obligation

during

the

warranty

period

is

to

provide,

without

charge,

parts

and

labor

necessary

to

remedy

covered

defects

appearing

in

products

returned

prepaid

to:

RTS

Systems,

1100

W.

Chestnut

Street,

Burbank,

California,

91506,

U.SA„

This

warranty

does

not

cover

any

defect,

malfunction

or

failure

caused

beyond

the

control

of

RTS

Systems,

including

unreasonable

or

negligent

operation,

abuse,

accident,

failure

to

follow

instructions

in

this

Manual,

defective

or

improper

associated

equipment,

attempts

at

modification

and

repair

not

authorized

by

RTS

Systems,

and

shipping

damage.

Products

with

their

serial

numbers

removed

or

effaced

are

not

covered

by

this

warranty.

To

obtain

warranty

service,

follow

the

procedures

entitled

"PROCEDURE

FOR

RETURNS"

and

"SHIPPING

TO

MANUFACTURER

FOR

REPAIR

OR

ADJUSTMENT"

listed

below.

This

warranty

is

the

sole

and

exclusive

express

warranty

given

with

respect

to

RTS

Systems'

products.

It

is

the

responsibility

of

the

user

to

determine

before

purchase

that

this

product

is

suitable

for

the

user's

intended

purpose.

ANY

AND

ALL

IMPLIED

WARRANTIES,

INCLUDING

THE

IMPLIED

WARRANTY

OF

MERCHANTABILITY

ARE

LIMITED

TO

THE

DURATION

OF

THIS

EXPRESS

LIMITED

WARRANTY.

NEITHER

RTS

SYSTEMS

NOR

THE

DEALER

WHO

SELLS

RTS

SYSTEMS*

PRODUCTS

IS

LIABLE

FOR

INCIDENTAL

OR

CONSEQUENTIAL

DAMAGES

OF

ANY

KIND.

RETURN

SHIPPING

INSTRUCTIONS

Procedure

for

returns:

If

repair

is

necessary,

contact

the

dealer

where

this

unit

was

purchased.

If

repair

through

the

dealer

is

not

possible,

contact

the

RTS

Systems

Customer

Service

Department

by

telephone,

as

directed

below,

to

obtain

a

Return

Authorization

Number.

DO

NOT

RETURN

ANY

EQUIPMENT

TO

THE

FACTORY

WITHOUT

FIRST

OBTAINING

A

RETURN

AUTHORIZATION

NUMBER.

Be

prepared

to

provide

your

company’s

name,

address,

phone

number,

a

person

to

contact

regarding

the

repair,

the

type

and

quantity

of

equipment,

a

description

of

the

defect,

and

the

serial

number(s).

Questions

regarding

returns

for

repair

should

be

directed

to:

Customer

Service

Department

RTS

Systems,

Inc.

1100

W.

Chestnut

St.

Burbank,

CA

91506,

U.S

A.

Telephone:

(818)

566-6700

TELEX:

194S55

TWX:

910498-4987

FAX:

(818)

843-7953

SHIPPING

TO

MANUFACTURER

FOR

REPAIR

OR

ADJUSTMENT

All

shipments

of

RTS

Systems,

Inc,

equipment

should

be

prepaid

via

United

Parcel

Service

or

the

best

available

shipper.

The

equipment

should

be

shipped

in

the

original

packing

carton;

if

not

available,

use

any

suitable

container

that

is

rigid

and

of

adequate

size.

If

a

substitute

container

is

used,

the

equipment

should

be

wrapped

in

paper

and

surrounded

with

at

least

four

inches

of

excelsior

or

similar

shock-absorbing

material.

All

shipments

should

be

directed

to

the

attention

of

the

Customer

Service

Department

and

must

include

the

Return

Authorization

Number.

Upon

completion

of

repairs

equipment

will

be

returned

via

United

Parcel

Service

or

specified

shipper,

collect.

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM:

60572

/

TM2809

/

Third

Edition,

October

1988

Page

vi

TECHNICAL

MANUAL

Model

PS8

Power

Supply

SECTION

1:

INTRODUCTION

AND

SPECIFICATIONS

1.1

INTRODUCTION

In

the

TW

Intercom

System,

the

power

supply

is

considered

the

heart

of

the

system.

The

Model

PS8

Power

Supply

is

designed

to

function

in

applications

employing

small-size

TW

Intercom

Systems.

The

unit

is

completely

self-contained

and

features

two-channel

operation;

one

Vet"

channel

with

32

volts

DC

and

one

"dry"

channel

without

voltage

potential.

Each

channel

provides

an

audio

termination

impedance

of

200

ohms.

The

Model

PS8

is

mechanically

and

electrically

built

to

industrial

quality

standards,

insuring

long-term

usage

and

performance.

Outputs

are

protected

against

short

circuit

conditions

with

recovery

being

automatic

and

instantaneous.

Protection

circuitry

prevents

damage

to

the

power

supply

from

accidental

connection

to

120

volt

AC

power

lines.

12

POWERING

A

single

PS8

Power

Supply

powers:

twelve

user

stations

without

call

lights,

seven

speaker

stations

without

call

lights,

seven

user

stations

with

call

lights,

or

five

speaker

stations

with

call

lights.

Of

course*

a

combination

of

stations

may

be

used

with

respect

to

maximum

current

capability.

See

Figure

3-3

and

Figure

3-4

for

Model

PS8

powering

capability.

If

still

more

user

stations

are

needed*

two

PS8

Power

Supplies

can

be

audio

coupled

together

to

double

the

powering

capability;

a

1/4-inch

3-circuit

phone

jack

is

available

for

this

purpose.

This

connector

can

also

be

used

as

a

one-way

output

port

when

monitoring

or

recording

the

intercom

audio

signals.

1J

DUAL

AUDIO

IMPEDANCE

When

two

P$8

T

s

are

combined,

an

impedance

select

switch

on

each

PS8

maintains,

in

effect,

the

200

ohm

Hue

termination

while

the

pair

of

units

provides

the

equivalent

current

of

what

would

be

approximately

a

FS20.

In

the

normal

position,

the

switch

sets

the

impedance

to

200

ohms

while

in

the

dual

position,

a

400

ohm

impedance

is

established.

The

parallel

combination

of

400

ohms

between

the

two

power

supplies

now

becomes

200

ohms:

the

nominal

line

impedance

for

the

TW

Intercom

System.

1.4

CONNECTIONS

There

are

two

XLR-type

3-pin

male

connectors

mounted

on

the

rear

panel

for

output

interconnection

to

the

user

stations.

(The

PS8

itself

does

not

have

program

insertion

capability).

IS

PACKAGE

The

PS8

is

housed

in

a

metal

enclosure

measuring

1.75

inches

high

by

8*38

inches

wide

by

7.5

inches

deep.

The

unit

is

completely

enclosed

and

may

be

used

free

standing,

or

rack

mounted.

All

electrical

components

are

assembled

on

a

single

circuit

board

allowing

easy

adjustment

or

servicing;

immediate

access

is

accomplished

by

removing

four

screws

and

sliding

the

top

and

bottom

covers

back

along

their

respective

channels.

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM:

60572

/

TM2809

/

Third

Edition,

October

1988

TECHNICAL

MANUAL

Model

PS8

Power

Supply

i

1

i

!

i

1.6

PS8

SPECIFICATIONS

OUTPUTS:

One

powered

channel,

CHI

(audio

+

DC

+

200

ohm

audio

termination)

One

passive

channel,

CH2

(audio

+

200

ohm

audio

termination)

OUTPUT

VOLTAGE:

Nominal

open

circuit

+

32

volts,

+

0.5

V.-1.5

V

Full

load

+26

volts

OUTPUT

IMPEDANCE:

200/400

ohms

switchable

On

powered

channel:

200

ohms

is

maintained

from

17

to

32

volts

output

OUTPUT

CURRENT:

@

26

volts

0.4

amps

@

32

volts

0.5

amps

INTERCOM

AUDIO:

NOMINAL

LEVEL:

2.0

volts

p

MINIMUM

HEAD

ROOM

6

dB

minimum

TERMINATION:

200

or

400

ohms

+

10%

Both

channels

FREQUENCY

RESPONSE:

75

Hertz

to

20

KHz

*3

dB,

no

load

SIGNAL

TO

NOISE

RATIO:

55

dB

Ref.

2.0

V

peak-to-peak

TEMPERATURE:

Operating

0

to

+

50

Storage

-40

to

+70

POWER

REQUIREMENT:

24

volt-amps

(120/240

VAC,

50-60

Hz)

DIMENSIONS:

Height:

Width:

Depth:

Weight:

Finish:

1.75

inches

(43.62

mm)

8375

inches

(212.73

mm)

7.50

inches

(190.50

mm)

5

pounds

(2.25

kilograms)

Light

gray

enamel

paint

SPECIFICATION

NOTES:

0

dBu

=

0.775

r.m.s

All

production

information

and

specifications

are

subject

to

change

without

notice.

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM:

60572

/

TM2809

/

Third

Edition,

October

1988

Page

1-2

TECHNICAL

MANUAL

Model

PS8

Power

Supply

Stand-Alone

Single

Rack

Mount

Figure

2-1

Outline

Drawing,

Mounting

Options

RTS

Systems,

Inc.

Burbank,

CA

91506

/

FSCM:

60572

/

TM2809

/

Third

Edition,

October

1988

TECHNICAL

MANUAL

Model

PS8

Power

Supply

SECTION

2:

INSTALLATION

2-1

MECHANICAL

INSTALLATION

(See

Figure

2-

1,

Outline

Drawing

Mounting

Options,

Figure

2-2,

Outline

Drawing,

and

Figure

7-3,

Installation

Diagram.)

The

Model

PS8

can

be

installed

in

3

ways.

A

single

unit

can

be

mounted

in

a

half

rack

space

using

the

rack

ears

provided;

or

two

PS8's

can

be

mounted

side

by

side

using

the

holes

provided

in

the

side

rail

along

with

the

short

rack

ears;

or

the

units

can

be

free

standing

using

the

stick-on

rubber

feet.

The

rack

ears

conform

to

standard

EIA

rack

sues

and

each

car

can

be

used

on

either

side

of

the

unit.

To

install

the

Model

PS8

first

select

the

configuration

to

use

in

your

application.

If

mounting

free

standing

place

the

stick-on

rubber

feet

on

the

bottom

of

the

unit

in

the

four

corners.

If

rack

mounting

carefully

remove

the

cover

of

the

unit

by

removing

the

screws

and

sliding

off

the

cover.

There

are

2

screws

on

each

side

rail

of

the

unit.

Remove

them.

the

rack

ears

on

the

sides

of

the

unit

and

re-attach

the

screws

to

the

sidcrails.

The

nut

and

washer

go

on

the

inside

of

the

unit.

Be

careful

not

to

jar

or

strike

any

of

the

electronic

components

inside

of

the

unit.

If

using

two

units

side-

by-side

fasten

the

two

units

together

through

the

2

holes

on

the

common

side

of

each

unit;

then

attach

the

short

rack

ears

to

the

opposite

sides.

Now

re¬

attach

the

top

cover

and

fasten

the

unit

to

the

rack.

12

OUTPUTS

Located

on

the

back

panel

are

the

outputs.

The

PS8

is

designed

to

accept

standard

XLR

3-pin

female

connectors.

23

POWER

and

INPUT

POWER

SELECTION

Located

on

the

back

panel,

lower

left,

is

the

power

cord.

It

is

standard

18

gauge,

3

wire

cord,

6

feet

long

with

CEE

color

code.

It

has

a

standard

North

American

3

prong

plug.

the

two

4-40

phillips

head

screws

in

the

top

cover

and

sliding

the

cover

open.

WARNING:

SEE

SECTION

S3

CONCERNING

POTENTIAL

SHOCK

HAZARD!

233

EXTERNAL

FUSE

Located

on

the

back

panel,

upper

left,

is

the

external

fuse.

The

fuse

holder

is

a

standard

international

type

which

accepts

a

standard

1/4

inch

by

11/4

inch

AGC

or

3AG

slow-blow

fuse.

Refer

to

the

fuse

table

for

the

appropriate

fuse

size.

233

INTERNAL

FUSE

Mounted

on

the

P.C.

Board,

behind

the

external

fuse

is

the

internal

fuse.

To

gain

access,

remove

the

top

cover

by

unscrewing

the

screws

and

sliding

the

cover

open.

Refer

to

the

fuse

table

for

the

appropriate

fuse

size.

The

internal

fuse

is

used

as

a

secondary

safety

device.

It

is

one

fuse

larger

than

the

external

fuse.

If

the

external

fuse

is

blown

and

a

larger

fuse

is

put

into

its

place,

the

internal

fuse

will

blow

before

the

unit

is

destroyed.

If

the

fuses

keep

on

blowing,

the

unit

needs

servicing,

FUSE

TABLE

115

External

1/2

amp,

slow-blow

Internal

1

amp,

slow-blow

230

External

1/4

amp,

slow-blow

Internal

1/2

amp,

slow-blow

When

reinstalling

the

top

cover,

the

two

screws

must

be

installed

carefully

to

insure

a

good

ground

connection

between

the

cover

and

the

chassis.

23,4

POWER

INDICATOR

23.1

115/230

CONVERSION

SWITCH

Located

internally,

behind

the

external

fuse

and

mounted

on

the

P,C.

board

is

the

115/230

conversion

switch.

To

gain

access

to

this

switch,

the

top

cover

must

be

removed.

This

is

accomplished

by

removing

Located

on

the

front

panel,

bottom

right,

is

the

power-on

indicator.

It

is

a

green

light

emitting

diode

(LED).

RTS

Systems,

Inc,

Burbank,

CA

91506

/

FSCM:

60572

/

TM2809

/

Third

Edition,

October

1988

Page

2-1

RTS Systems PS8 Manuale utente

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