Techron 7550 Manuale utente

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-~

ARTISAN

®

~I

TECHNOLOGY

GROUP

Your definitive source

for

quality

pre-owned

equipment.

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Group

Full-service,

independent

repair

center

with

experienced

engineers

and

technicians

on staff.

We

buy

your

excess,

underutilized,

and

idle

equipment

along

with

credit

for

buybacks

and

trade-ins

.

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engineering

so

your

equipment

works

exactly as

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specify.

•

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•

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e property of

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e

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ve

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ner

s.

Visit our website - Click HERE

E

®

7550

POWER

SUPPLY

AMPLIFIER

Techron

Division

of

Crown

International,

Inc.,

1718

W.

Mishawaka

Road,

Elkhart,

IN

46517-4095

©

1992

Crown

Intemational,

inc

K80507-5

TECHRON

LIMITED

ONE-YEAR

WARRANTY

SUMMARY

OF

WARRANTY

CROWN

INTERNATIONAL,

INC.,

1718

W.

Mishawaka

Road,

Elkhart,

Indiana

46517

(Warrantor)

warrants

to

the

ORIGINAL

COMMERCIAL

PURCHASER

ONLY

of

each

NEW

TECHRON

product,

for

a

period

of

one

(1)

year

from

the

date

of

purchase

by

the

original

purchaser

(warranty

period)

that

the

product

is

free

of

defects

in

materials

or

workmanship

and

will

meet

or

exceed

all

advertised

specifications

for

such

a

product.

This

warranty

does

not

extend

to

any

subsequent

purchaser

or

user,

and

automatically

terminates

upon

your

sale

or

other

disposition

of

our

product.

ITEMS

EXCLUDED

FROM

WARRANTY

We

are

not

responsible

for

product

failure

caused

by

misuse,

accident

or

neglect.

This

warranty

does

not

extend

to

any

product

on

which

the

serial

number

has

been

defaced,

altered

or

removed.

It

does

not

cover

damage

to

loads

or

any

other

products

or

accessories

resulting

from

Techron

product

failure.

It

does

not

cover

defects

or

damage

caused

by

your

use

of

unauthorized

modifications,

accessories,

parts,

or

service.

WHAT

WE

WILL

DO

We

will

remedy

any defect

in

materials

or

workmanship

by

repair,

replacement,

or

refunds.

If

a

refund

is

elected,

then

you

must

make

the

defective

or

malfunctioning

component

available

to

us

free

and

clear

of

all

liens

or

other

encumbrances.

The

refund

will

be

equal

to

the

actual

purchase

price,

not

including

interest,

insurance,

closing

costs,

and

other

finance

charges

less

a

reasonable

depreciation

on

the

product

from

the

date

of

original

purchase.

Warranty

work

can

only

be

performed

at

our

authorized

service

centers

or

at

our

factory.

Expenses

in

remedying

the

defect

will

be

borne

by

Crown,

including

one

way

surface

freight

shipping

costs

within

the

United

States.

(Purchaser

must

bear

the

expense

of

shipping

the

product

between

any

foreign

country

and

the

port

of

entry

in

the

United

States

and

all

taxes,

duties,

and

other

custom’s

fee

for

such

foreign

shipments.)

HOW

TO

OBTAIN

WARRANTY

SERVICE

-~

You

must

notify

us

of

your

need

for

warranty

service

not

later

than

ninety

(90)

days

after

expiration

of

the

warranty

period.

We

will

give

you

an

authorization

to

retum

itto us

for

service.

All

components

must

be

shipped

in

a

factory

pack

or

equivalent

which,

ifneeded,

may

be

obtained

from

us

for

a

nominal

charge.

Corrective

actions

will

be

taken

within

a

reasonable

time

of

the

date

of

receipt

of

the

defective

product

by

us.

If

the

repairs

made

by

us

are

not

satisfactory,

notify

us

immediately.

DISCLAIMER

OF

CONSEQUENTIAL

AND

INCIDENTAL

DAMAGES

YOU

ARE

NOT

ENTITLED

TO

RECOVER

FROM

US

ANY

CONSEQUENTIAL

OR

INCIDENTAL

DAMAGES

RESULTING

FROM

ANY

DEFECT

IN

OUR

PRODUCT.

THIS

INCLUDES

ANY

DAMAGE

TO

ANOTHER

PRODUCT

OR

PRODUCTS

RESULTING

FROM

SUCH

A

DEFECT.

WARRANTY

ALTERATIONS

NO

PERSON

HAS

THE

AUTHORITY

TO

ENLARGE,

AMEND,

OR

MODIFY

THIS

WARRANTY.

THE

WARRANTY

IS

NOT

EXTENDED

BY

THE

LENGTH

OF

TIME

WHICH

YOU

ARE

DEPRIVED

OF

THE

USE

OF

THE

PRODUCT.

REPAIRS

AND

REPLACEMENT

PARTS

PROVIDED

UNDER

THE

TERMS

OF

THIS

WARRANTY

SHALL

CARRY

ONLY

THE

UNEX-

PIRED

PORTION

OF

THIS

WARRANTY.

DESIGN

CHANGES

We

reserve

theright

to

change

the

design

of

any

product

from

time

to

time

withoutnotice

and

withno

obligation

to

make

corresponding

changes

in

products

previously

manufactured.

LEGAL

REMEDIES

OF

PURCHASER

There

is

no

warranty

which

extends

beyond

the

terms

hereof.

This

written

warranty

is

given

in

lieu

of

any

oral

or

implied

warranties

notcontained

herein.

WE

DISCLAIM

ALL

IMPLIED

WARRANTIES,

INCLUDING

WITHOUT

LIMITATION

ANY

WARRAN-

TIES

OF

MERCHANTABILITY

OR

FITNESS

FOR

A

PARTICULAR

PURPOSE.

No

action

to

enforce

this

Warranty

shall

be

commenced

later

than

ninety

(90)

days

after

expiration

of

the

warranty

period.

TECHRON

division

of

Crown

International,

Inc.

_

1718

W.

Mishawaka

Road,

Elkhart,

IN

46517-4095

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from

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engine

TECHRON.

7550

Power

Supply

Amplifier

Rev.

0

aon

List

of

Effected

Pages

Revision

0

November,

1992

Page

Revision

Page

Revision

Number Number

Number

Title

Page

.........

pete

eens

0

B-1ltoS5

oe

eee

0

Warranty

Page

..............

0

4-1to4-8

.............0..45.

0

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2.0.2...

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............0......

0

l-ltol2...............4..

0

2-1to2-8

........

0.0...

0

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_

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from

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search

engine

TECHRONs

7550

Power

Supply

Amplifier

Rev.

0

-

Table

of

Contents

Section

1.

Introduction

.........

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1-1

1.1.

General

Description

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1-1

1.2.

Mechanlcs

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1-2

1.4.

Service

Policies

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2.

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2.3.2.

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2.3.3.

INPUTS

2.

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2.3.4.

Outputs

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Wires

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Power.

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3.

Operation...

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Operating

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4.

Specifications

and

Performance

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4.1.

General

Specifications

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4.4,

Performance

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Section

5.

Theory

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General

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6.1.

Introduction

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the

Applications

Section

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6.2.

Special

Operation

Modes

for

Increased

Output

..............0.00005

6-1

6.2.1.

Push-Pull

Operation

for

Increased

Voltage

....................000006,

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Input

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75A06)......................0.

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Transformer

Input

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Constant

Current

Operation

for

Special

Needs

(75A08)

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TECHRONs

7550

Power

Supply

Amplifier

Rev.

0

Illustrations

INustration

1-1

Model

7550

2.0...

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2-1

Mounting

Demensions

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Dual

Channel

Hookup

.........

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Mono

Hookup

.........-

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2-4

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2-4

Input

Capacitor

Chart

..

0.2.00...

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2-5

Iustration

2-5

RF

input

Filters...

2.0...

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2-6

Illustration

2~6

Wire

SlzeNomograph

...........---

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2-7

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2-7

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Load

Protectlon

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27

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2~8

Fuse

Selector

Nomograph

.........-

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2-8

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3-1

Front

Panel

Functions

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3-2

Hlustration

3-2

Back

Panel

Functlons

........0

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3-3

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3-3

Fuse

Selectlon

Table

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35

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41

Power

Matrix

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4-2.

Nominal

Frequency

Response

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Phase

Response

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Frequency

Interrupt

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Distortion

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5-1

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Internal

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Supply

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from

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engine

TECHRON,

7550

Power

Supply

Ampilfier

Rev.

0

Illustration

1-1

Model

7550

Section

1.

Introduction

1.1.

General

Description

The

TECHRONs*

7550

(shown

above)

is

a

high-

powered,

industrial

power

supply

amplifier,

single

or

dual

channel.

Read

this

manual

com-

pletely

to

familiarize

yourself

with

the

details

of

this

amplifier.

Model

7550

provides

precision

amplification

of

electrical

signals

with

frequencies

from

zero

(de)

to

20

kHz.

It

accomplishes

this

with

ex-

tremely

low

harmonic

and

intermodulation

dis-

tortion

and

low

noise.

The

continuous

average

power

output

is

90

watts

minimum

per

channel

into

an

8

ohm

load.

Bridge

the

amplifier

and

operate

it

as

a

mono

unit

with

180

watts

minimum

power

out-

put

into

a

16

chm

load.

The

rugged

aluminum

chassis

measures

five

and

a

quarter

inches

high,

nineteen

inches

wide,

and

almost

twelve

inches

deep.

1.2.

Mechanics

.

On

the

front

panel,

the

push

button

power

switch

activates

an

amber

ON

indicator.

Green

SIGNAL

PRESENCE

indicators

confirm

signal

path

from

input

to

output.

Directly

above

these

are

red

JOC®

indicators

which

indicate

clipping

and

STANDBY

conditions.

Use

the

front

panel

output

monitor

jack

with

a

high

impedance

load

to

monitor

the

output.

Ad-

just

the

output

level

with

the

two

controls

on

the

front

panel.

On

the

back

panel

are

alternate

means

of

input

and

output

connection.

Connect

an

unbalanced

input

to

either

BNC

jacks

or

barrier

strip

screws,

and

a

balanced

input

to

an

optional

in-

put

module.

Connect

output

to

banana

jack

binding

posts

or

barrier

strip

screws.

Other

features

on

the

back

panel

include

a

mono/dual

switch,

a

grounding

barrier

strip,

and

a

three-wire

AC

line

cord

with

fuse.

*

TECHRONe

is

a

division

of

Crown

International,

Inc.

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engine

—_

Introduction

TECHRONs

7550

Power

Supply

Amplifier

Rev.

0

1.3.

Circuitry

The

output

transistors

operate

in

the

Techron-

designed

Multi-Mode®

AB

+

B

configuration

in

which

quiescent

current

is

carried

by

the

driver

stages

until

the

output

transistors

are

sum-

moned

by

a

large

current

demand.

Techron

tests

each

of

the

16

rugged

150

watt

output

transistors

to

verify

the

safe

operating

area

of

each

device

which

enhances

the

amplifi-

er’s

overall

reliability.

Massive

black-anodized

heat

sinks

thermally

joined

with

the

chassis

enable

the

entire

ampli-

fier

to

function

as

a

heat

sink.

In

the

event

of

overheating,

the

thermal

sensing

circuit

will

place

the

amplifier

in

the

STANDBY

mode.

After

cooling,

the

unit

will

return

to

normal

operation.

Frequent

overheating

may

indicate

the

need

for

the

optional

forced

air

cooling

sys-

tem.

See

Section

NO

TAG

V-I

current

limiting

provides

protection

against

damage

from

shorted

and

low

impedance

loads,

overloaded

power

supplies,

input

overload,

and

high

frequency

overloads.

A

four-second

turn-

on

delay

provides

initial

load

protection.

1.4.

Service

Policies

Due

to

the

sophisticated

circuitry

of

Model

7550,

have

only

qualified

and

fully

trained

technicians

perform

service

work.

Return

to

the

factory

in

original

packing

for

service.

Re-

placement

packing

is

available

from

Techron.

When

returning

Model

7550,

enclose

a

brief

letter

explaining

as

completely

as

possible

all

problems.

Include

your

address

and

telephone

number.

Ship

“UPS™

ground”

to:

TECHRON

Customer

Service

Department

57620

C.R.

105

Elkhart,

Indiana

46517

Phone:

(219)

294-8300

FAX:

(219)

294-8329

1.5.

About

this

Manual

Special

instructions

(Danger,

Warning,

Cau-

tion,

and

Note)

appear

throughout

this

manual.

Examples

of

each

follow:

A

ve

Danger

is

used

before

instructions

that

|

expose

the

reader

to

a

hazard

that

will

|

cause

Injury

or

death.

The

hazard

will

be

explained

and

Instructions

to

avoid

the

hazard

will

be

Included

In

the

warning.

|

A

Warning

is

used

before

Instructions

|

that

expose

the

reader

to

a

hazard

that

may

cause

Injury

or

death.

The

hazard

will

be

explalned

and

instructions

to

avold

the

hazard

will

be

Included

In

the

warning.

ae

en

ZN

CAUTION

A

Caution

is

used

before

Instructions

that

if

not

performed

properly,

could

cause

equipment

damage.

The

condition

will

be

explained

and

instructions

to

avold

the

conditlon

will

be

Included

In

|

the

warning.

Note:

A

note

is

used

when

information

needs

special

emphasis

that

does

not

call

attention

to

a

hazard.

The

rest

of

this

manual

contains

complete

in-

formation

on

installation,

operation,

specifica-

tions,

performance,

theory,

and

applications.

Downloaded

from

www.Manualslib.com

manuals

search

engine

1-2

Introduction

TECHRON,»

7550

Power

Supply

Amplifier

Rev.

0

Section

2.

Installation

sme

qe

—

To

reduce

the

risk

of

ELECTRIC

SHOCK

Do

not

Install

Model

7550

Into

a

smail

or

FIRE

HAZARD,

do

NOT

expose

Model

sealed

chamber

of

any

kind.

Improper

7550

to

rain

or

molsture.

operation

and

overheating

will

result.

2.1.

Unpacking

Provide

a

source

of

cooling

air

for

the

fan

in-

take.

A

vent

tube

to

the

outside

of

the

rack

may

be

necessary

if

the

rack

ventilation

is

poor

and/

or

the

amplifier

heat

output

is

high.

NEVER

Every

Techron

Model

7550

is

thoroughly

in-

spected

and

tested

prior

to

leaving

the

factory.

Carefully

unpack

and

inspect

the

unit

for

dam-

block

the

air

vents

in

the

sides,

front,

and

back

of

the

amplifier.

Allow

a

clearance

of

1.75

inches

(4.5

cm)

above

the

unit

for

hot

air

dis-

charge,

if

at

all

possible.

age

in

shipment.

If

damage

is

found,

notify

the

transportation

company

immediately.

Save

the

shipping

carton

and

packing

materials

as

evi-

ae

dence

of

damage

for

the

shipper’s

inspection.

Techron

will

cooperate

fully

in

the

case

of

any

shipping

damage

investigation.

In

any

event,

save

the

packing

materials

for

later

use

in

transporting

or

shipping

the

unit.

Replacement

packing

materials

are

available

from

Techron.

Always

ship

this

amplifier

in

proper

and

appro-

priate

packing

material.

2.2.

Mounting

The

PSA-2X

amplifier

is

designed

for

standard

19-inch

(48.3

em)

rack

mounting

as

well

as

stack

mounting

without

a

cabinet.

When

rack

mounting,

take

care

to

support

the

heavy

am-

plifier

from

behind.

Use

end

supporting

angles

joined

to

the

sides

of

the

rack

to

support

the

amplifier

from

beneath.

If

chassis

slides

are

used,

care

should

be

taken

to

avoid

toppling

the

rack

when

the

slides

are

extended.

The

center

of

gravity

of

the

amplifier

is

approximately

5.4

inches

(13.7

em)

behind

the

front

panel.

k

14.75in

2.125 In-~|

5S

Sacm

If

a

number

of

units

are

being

racked

on

electri-

cally

common

rails,

remove

the

strap

from

the

~

rear-panel

ground-terminal

strip

to

maintain

a

very

high

signal/noise

ratio.

This

will

reduce

the

possibility

of

ground

loop

hum.

Illustration

2-1

Mounting

Dimensions

2-1

installation

Downloaded

from

www.Manualslib.com

manuals

search

engine

TECHRONe

7550

Power

Supply

Amplifier

Rev.

0

CHANGE

THE

DUAL-MONO

SWITCH

ONLY

WITH

THE

AMP

TURNED

OFF

INPUT

SOURCES

«

CHANNEL

2

IN

CHANNEL

1

IN

ovaL—!

L_e

mono

Model

7550

CHANNEL

1

|

OUT

+

DUAL

MODE

LOADS

CHANNEL

2

OUT

-

Illustration

2-2

Dual

Channel

Hookup

2-2

Installation

Downloaded

from

www.Manualslib.com

manuals

search

engine

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