Gates Criterion series User manual

HARRIS

GATES

·

INTERTYPE

CORPORATION

AUTOMATIC

TAPE

CONTROL

DIVISION

.'\

'..

'\

0.

\

\)

\

WARRANTY

Se

II

er

warrants

new

equ

i

pmen

I

manufactured

by

Gale

s

Rod

io

Company

ogoi

n

st

defect

sin

materia

lor

work·

man

sh

ip

ot

the

ti me

01

del

i

very

thereof,

thol

deye

10

p

under

norma

I

use

wi Ih in 0

per

iod

a

fane

yeor

(6

month

s

on

moving

parIs)

from

the

dale

of

shipment,

of

which

Purchaser

gives

Seller

prompt

wrillen

notice.

Other

manufacturers'

equipment,

if

any,

including

electron

lubes,

and

lowers,

sholl

corry

only

such

monufoc·

turers'

stondord

warranty,

Seller's

sole

responsibility

for

any

breach

of

the

foregoing

provision

of

this

conlrOCI,

with

respect

to

any

equipment

or

ports

not

conforming

to

the

warranty

or

the

description

herein

contained,

is

at

its

option,

(a)

10

repair

or

replace

such

equipment

or

ports

upon

the

return

thereof

I.o.b.

Seller's

factory

within

the

peri·

ad

aforesaid,

or

(b)

to

occept

the

return

thereof

f.o.b.

Purchaser's

point

of

installolion,

whereupon

Seller

sholl

ei

ther

(l)

issue

a

credi

t

to

Purcho

ser'

s

account

hereunder

in

on

amount

equal

to

on

equ

i

tobl

e

portion

of

the

lotol

contract

price,

without

interest,

or

(2)

if

the

total

contract

price

has

been

paid,

refund

to

Pur

·

chaser

on

equitable

portion

thereof,

without

interest.

If

Ihe

Equipment

is

described

as

used,

it

is

sold

as

is

and

where

is.

If

the

contract

covers

equipment

not

owned

by

Seller

at

this

date

it

is

sold

subject

to

Seller's

acquisition

of

posseSSion

and

title,

Se

II

er

assume

s

no

re

span

sib

iiiIy for

des

ign

choracteri

st

ic

s

of

spec

i

01

equi

pmen

t

manufactured

to

spec

i

fi·

coti

on s

su

ppl

i

ed

by a r on

beho

If

of

Purcha

ser.

Se

II

er

sha

II

not

be

Ii

abl

e fa r

any

expen

se

whether

for

repoi

rs,

repl

acement

5,

materia

I,

serv

ice

or

atherwi

5

e,

incurred

by

Purchaser

or

modili

cation

s

made

by

Purch

oser

to

the

Equ

i

pmen

t wi

thout

pri

or

wri

tten

con

sent

of

Seller,

EXCEPT

AS

SET

FORTH

HEREIN,

AND

EXCEPT

AS

TO

TITLE,

THERE

ARE

NO

WARRANTIES,

OR

ANY

AFFIRMATIONS

OF

FACTOR

PROMISES

BY

SELLER,

WITH

REFERENCE

TO

THE

EQUIPMENT,

OR

TO

MERCHANTABILITY,

INFRINGEMENT,

OR

OTHERWISE,

WHICH

EXTEND

BEYOND

THE

DE-

SCRIPTION

OF

THE

EQUIPMENT

ON

THE

FACE

HEREOF.

RETURNS

AND

EXCHANGES

Do

not

return

any

merchandi

se

wi

thou

tour

wri

lien

appro

va

land

Return

Authori

zotion

.

We

wi

II

proYi

de

speci

0 I

sh

i

pping

in

sfruction

s

and

a

code

number

th

01

wi

lias

sure

proper

hond

Ii

n9

and

prompt

issuance

of

credi

I.

P I

eo

se

furn

ish

camp

I

ele

detai

Is

as

to

circum

stan

ce

s

and

reason

s

when

requesti

ng

retu

rn

of

m

er-

chand

i

se.

Cu

stom

buiIt

equ

i

pmen

t

or

merchond

is

e

speci

a

II

y

ordered

for

you

is

not

returnobl

e.

Where

return

is

at

Ihe

request

of,

or

for

tne

convenience

of

the

customer,

°

restocking

fee

of

15%

will

be

charged.

All

returned

merchandi

se

must

be

sent

freight

prepaid

and

properly

insured

by

the

customer.

When

writing

to

Gates

Radio

Company

about

your

order,

it

will

be

helpful

if

you

specify

Ihe

Gotes

Factory

Order

Number

or

Invoice

Number.

/

WARRANTY

ADJUSTMENTS

In

the

event

of

equipment

failure

during

Ihe

warranty

period,

replacement

or

repair

ports

may

be

provided

in

accordance

wi th

the

provi

5

ions

of

the

Gotes

Warranty.

In mo

st

co

ses

you

wi

II

be

requ

i

red

to

return

Ih e

defective

merchondise

or

port

to

Gotes

f.o.b.

Quincy,

Illinois,

for

replacement

or

repair.

Costof

repair

ports

or

replacement

merchandise

will

be

billed

to

your

account

ot

the

time

of

shipment

and

compensating

credit

will

be

issued

to

offset

the

chorge

when

the

defective

items

are

returned.

MODIFICATIONS

Gates

reserves

the

right

to

modify

the

design

and

specifications

of

the

equipment

shown

in

this

catolog

without

notice

or

to

withdraw

cny

item

from

sole

provided,

however,

that

any

modifications

sholl

not

ad-

versely

affect

the

performance

of

the

equipment

so

modified.

CONTENTS

In

troduct1on

I

Section

1

~neral

Descr1ption

1-1

1.1

Playback

Unit

1-1

1.2

Kecorn

Amplifier

1-1

1.3

SpecificR

t1on!;

1...2

1.J.1

Playback

Un1

t

1-2

1.J.2

hecord.

Amplifier

1...3

Section

2

Ins

talla

tion

2_1

2.1

Unpacking and

Inspection

2

..

1

2.2

Installation

Procedure

2-1

2.2.1

General

2-1

2.2.2

Playback,

Monophonic

2-1

2.2.3

Playback,

Stereophonic

2_1

2.2.4

Playback/Record,

Mono

or

Stereo

2-1

2.2.5

Remote

Control

Connections

2-1

Section

J

Operation

3-1

3.1

Recording

3-1

3.1.1

Record

Amplifier

Contral

Functions

.3-1

3.1.2

Recording

Procedure

3-1

3.2

Playback

)

..

2

3.2.1

Control

Functions

3-2

3.2.2

Playback

Procedure

3-2

Section

4

Adjustments

4-1

4.1

kecording

Amplifier

4-1

4.1.1

Blas

Level

4...1

4.1.2

Cue

Record

Levels

4_2

4.1.3

Cue

Frequency

4.t2

4.2

Playback

4-2

4.2.1

Cue

Sensi

t1

vi

ty

4..2

4.2.2

Program

Gain

4..2

4.2.3

Head Alignment 4_2

Section

5 Maintenance 5-1

5.1

Record

Amplifier

5-1

5.2

Playback

Uni

t 5-1

5.2.1 Heads 5-1

5.2.2 PreSSUl'e

Roller

5-4

5.2.3 Cue

Sensi

tiv1

ty

Levels

5-4

5.2.4

Deck

AdjUB tments

5-4

.5.2.5 Maintenance

Checklist

5-6

Section

6

Parte

List

.. Drawinge 6_1

6.1 P1aybaek

Unit

6_1

6.1.1

Parte

List

6..1

6.1.2

Drawing. 6-5

6.2

Record

Amplifier

6_6

6.2.1

Part.

Lilt

6.6

6,2.2

Draw1.nc. 6-9

IM'mODOC'l'ION

In

1962

the

lIajor

manuf'acturera

of

oartridge

equipment

belan

a

co.operative

effort

to

establish

Bt&ndarde

for

cartridge

tape

equipllent.

A.

aerie.

of

.eet.i.ngs,

under

the

direction

of

the

NAB,

extended

into

1964

and

d~

this

time,

certain

tel'lU

came

into

general

use.

Many

of

then

tenus

are

used

in

this

manual.

and

are

defined

below.

CUE

TRACK:

'lbe

lower

track

of

• two

track

cartridge

monophonic

Bystem,

and

the

loves

t

track

of

a

three

track

cartridge

:;t.ereophon1e

system.

PROGRAM

TRACK:

'lbe

upper

track

of

a

two

track

cartridge

IIlOnophonic

sy.tem,

the

upper

track

(left

channel)

and

II1ddle

track

(right

channel)

of

•

thre@

track

cartridge

stereophon1c

system.

BEAD

A:

The

magnetio

(reproducing)

head

nearest

the

cap8t&n.

HEAD

Bf

lb.

IIUIgnet1c

(record1ng)

head

adjacent

to

head

A.

PRIMARY

CUE

TONE:

A

1000

cycle

tone

recorded

on

the

CUE

TRACK

&nd

used

for

positioning

the

tape

in

the

cued

position;

the

stop

tone.

SECONDARY

CUE

TONE:

A.

1,50

cycle

tone

recorded

on

the

CUE

TRACK

&nd

used

&8

the

!lend

of

lHIu&ge

l1

a1gnal.

This

tone

is

generall,y

Wled

for

starting

otller

equipllent

in

an

automation

system.

TERTIARY

CUE

TONE,

An

8000

cycle

tone

reoorded

on

the

CUE

TRACK

and

tl8ad

..

desired.

This

tone

haa

been

known

in

the

past

••

an

aux:111uy

or

trip

crue

tane.

CARTRIDGE

SIZE A: The 51&e J.

cartridge

vas

previowsly

known

&II

Series

300

or

the

aaallest

,ime,

C~TRIDGE

SIZE

B,

lhe

a111e

B

cartridge

waa

previously

known

a5

Series

600,

CAR'ftUDGE

SIZE C: The

Bize

C

cartridge

v."

prev1oual,y

known

••

Series

1200.

I

GENIIW..

DESCRIP'l'IOfi

1.1

PlAYBlCX

UNIT

Playback

1Jn1

t

is

a

state

SDlGLL.TONE

CWil

rack

pllmel

or

trWine

deek

console

in

or

Second

and

tone

operation

il

All

versiona

of

the

Criterion

series

equip...

ment

meet

NAB

and

offer

features

such

as

24

volt

DC

ex:temll

s.n.

tching

for

remote

starting

• and

adaptab1l1

t7

automated

systems.

Electronics

are

of

plug-in

i

inelu:Ung

rela7l,

cireui

t

modules.

front

panel

sw1

teh

anembl1es

and

extemal

connections.

The improved.,

laminated

heade

are

high

qwa1ity

ill...aeW

race

belds

pro

...

viding

for

wear

and

low

oxide

accumulation.

Improved

solenoid

action

and

shock

mounted

relays

contribute

to

the

quiet

operation

ot

the

unit,

and

the

proven

full-swing

pressure

wheel

linkage

makes

actual

Itudio

operation

easy

fool-proof.

heart

of

the

Criterion

Series

playback

transport

with

i U

hysteresis

synchronous

pod

t1

ve

the

heavy-duty

Ate

tape

speed

direct

capstan

dri

ve

motor.

The

Serles

comparable

to

men

t

type

ball

Plug-in

circuit

offer

the

finest

engineering,

The new modula:r

construction

may

be

required

to

Make

the

Crt

terion

Series

of

existing

equipment

including

Quality

board

construction

component

access

uintenance

be

is

used

to

power

circuit

modules

and

reliable

at

ill

times.

1.2

RECORD

Anr~r

Serles

Recording

_

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

speed

act'lm"&

preciBion

nutter

less

than

•

solid

ll!ltate

for

modifioations

as

oompatible

with

other

ukes

Ate

equip!lent

now

in

throughout

for

eas7

A

regulated

power

supply

oorreot

operating

parameters

fo

r.

use

in

any

monophonio

As

is

the

Criterion

Playback,

the

Recording

AmplU'1er

is

available

sl1de.out

~ack

panel

mounting

or

tr1ml1ne

desk

oonsole

in

either

monophonic

or

stereophonio

• and

third

tone

oper-

ation

is

optional.

Operation

on

regulated

DC

power from

the

associated

Payback,

aUUl"e!

correot

operating

parmeters

at

all

times.

The top...

surface

of

ill

components

in

the

Recording

Amplifier

provides

and

effioient

maintenance.

Unique

terminal

board

oonstruotion

permits

easy

field

modification

of

any

single-tone

amplifier

to

three.tone

operation.

1-1

1.3

SPEcIFICATIONS

1.3.1

PLAYBACK

UNIT:

POWER

SOURCE:

117

volts.

60

cps,

50

cps

on

special

order.

POWER

REQUIREMENTS:

65

watts

maximum.

FREQUENCY

RESPONSE:

The

overall

record-playback

response

of

the

Crt

tenon

Series

System

1s

plus

or

minUl

2 db

from

50

to

12,000

cps

and

pl\l8

or

!linus

4

db

from

.50

to

15.000

cps.

NOISE:

.55

db,

or

better,

below

the

1'IlaximUll1

signal

of

400

cps

at

3.

mD.

DISroRTION:

Record

to

Playback,

2~

or

less,

at

0

VU

record.

level,

400

cps.

EQUlLIZATION:

In

accordance

with

NAB

cartridge

recording

and

reproducing

standards.

The

recording

amplifiers

are

equalized

to

ma1nta1.n

the

required

playback

characteristics.

AMBIENT

TEMPERATURE:

55

degrees

C., maximum

OUTPUT,

PLAYBACK:

plWl 4 dbm,

nOrnluly

_6VU,

600

OM!.

balanced.

CUE

SIGNALS: The Cr1

terion

equipment

is

furnished

with

the

standard

1000

cycle

Primary

Cue.

150

cycle

Secondary

and

8000

cycle

Tertiary

Cu.

facilities

are

available

as

optional

equipment.

REMOTE

CONTROL:

All

control

functions.

TAPE

SPEED: ?t

inches

per

second.

TAPE

DRIVE

SYSTEM:

Direct

capstan

drive,

sealed

ball

be&r1ngs.

WOW

AND

FLUTTER:

•

2~

or

less.

TIMING

ACCURACY:

•

4~

or

better.

D:DfENSIONS:

Rack

Mount.

7"

high,

19"

panel

width.

13t"

deep.

Desk_Top

Cabinet.

5"

high,

lJiIl

vide,

14"

deep.

WEIGHT:

2.5

pound8

HEAOO:

In

accordance

with

HAS

Standards.

Pem1ts

monitoJ'1nc

while

recording.

1-2

1.

:3.

2

RlCORDDlG

AKPLInER

POWER

SOtmCEs

Fro.

"sulated

.'apply

or

PlQbaak

Unit.

AUDIO

llIPUT1 Minua

20

dbII

~,

pIa

18

dbBl

IBAZ1IIla,

600

oha

balanced.

BUS

QSCI.l.J..,.lTQRS:

Separate

puah-pull.

bia.

oaoUlat.or.

tor

Progrlll

am

Cue

circlli

ta

•

TORE

GENERATORS:

Ind1rtdual

tone

oac1.l1.ators

tor

each

frequency.

Frequenc.r

and

output

adjustable.

AMBIENT

~!:RA.TUREI

55

degreell

C. maxbnIm.

REMOTE

CONTROL:

All

control

!'unction

••

DIMEHSIONS:

R&ck

Mount, st

fl

high,

19"

panel.

ut"

deep.

_

Deak-top

Cabinet,

4"

high,

1:3

j/8

11

wide,

l2t"

d

••

p.

WEIGHT:

17

pounds

1-:3

INSTALLA.

T10N

SECTION

2

2.1

UNPACKING

AND

INSPECTION

Remove

all

packing

material

and

carefully

lift

the

units

from

the

boxes

. .

Check

the

equipment

against

the

packing

slips.

Visually

inspect

the

un!

ts

for

any

apparent

damage

and

for

missing

or

loose

component..

Check

for

proper

operation

of

the

front

panel

controls.

Any

claims

ror

deage

should

be

fUed

promptly

with

the

transportation

agency.

If

such

elaims

are

to

be

filed,

all

packing

Material

Must

be

retained.

2.2

INSTALLATION

PROCEDURE

2.2.1

GENERAL:

The

location

.in

an

individual

station

will

be

detel1'llined

by

the

9.rrangel1lent

of

..

..he

Main

control

room

faeUi

ties.

The

placement

of

~quiP'1ent

and

wiring

should

be

planned

carefully

before

any

installation

work

is

started.

Care

should

be

taken

to

provide

for

adequate

ventilation.

2.2.2

PLAYBACK.

MONOPHONIC:

:onnect

a

two_conductor

input

terminals

A1Xi

the

Playback

Connector

J2.

terminal

1.

See

Figure

shielded

cable

between

the

desired

audio

console

600

ohm

program.

output

terminals

:3

and'

:5

of

The

shield

of

the

cable

should

be

connected

to

2.2.

2.

J

PLAYBACK.

STEREOPHONIC:

j

~onnections

for

the

Stereo

left

channel

are

the

same

as

for

the

monophonic

aooio

channel.

The

right

stereo

channel

is

connected

to

terndnals

4 and

"6

Hi

tb

2

for

connection

to

the

shield.

Phasing

should

be

carefully

observed.

Terminals

1-3-5

are

identical

to

terminals

2-~6

respect!

vely.

See

Figure

2.2.

2.

4

PLAYBACK-RECORD

MONOPHONIC

OR

STEREO:

Inst.al.l

the

Playback-AmpUfler

interconnecting

cable

between

eonnectors

J)

of

tile

Playback

~

P602

of

the

Recording

Ampl1fier.

Connect

the

audio

input

(monophonic

or

stereo

left

channel)

to

tenlinall

:3

and

5

of

J601

wi

th

the

shield

conneeted

to

tenllinal

1.

For

stereophonic

in.tall.tiona.

connect

the

right

channel

audio

to

tenainals

4

and

6

ot

J601

and

the

shield

to

te

nllinal

2.

See

Figure

2.

4.

2.2.5

REMOTE

CONTROL

CONNECTIONS:

III

control

function8

of

both

the

Playback

&nd

Record

AIIpl1!1er

lm1

ta

IIQ'

be

l"elDOte

controlled.

Se.

chart..

2.2

and

2.4

tor

proper

connections.

2-1

Terminal

1

2 - 3

4 - 5

6 - 7

B - 9

10-

11

12-

13

14

15

1

3 - 5

2

4 - 6

CRITERION

PLAYBACK

UNIT

-

~

(@)

I-

~

r---

~

.....

--

[ I

~

I I -

$108

OFI

~

JI

32

, , 1

-13

12-

I I I

~=ITB-

III

~

1 1 I

.-

OF2

6-

I'

I I

II

I , ,

-I

-

REAR

VIEW

EXTERNAL

CONNECTIONS

Function

CONNECTOR

J 1

Ground

Remote

Start

Remote

Stop

(see

note

1)

J3

~I-I

6-

1'1

1-7

li-

..!...!..!...

I

Auxiliary

Start

(momentarily

closed

as

unit

starts)

Cue

Start

(momentarily

closed

as

unit

cues)

(see

note

2)

Auxiliary

Switching

(Closed

momentarily

by

Secondary

Tone)

Auxiliary

Switching

(Closed

momentarily

by

Tertiary

Tone)

Remote

STOP

light

circuit

No

connection

CONNECTOR

J 2

Audio

Ground

Monophonic

(or

left

stereo)

audio

output

Audio

Ground

Right

Stereo

audio

output

(if

used)

(see

note

3)

CONNEcroR

J3

Connector

J3

is

for

use

with

the

Playback/Recording

Amplifier

connectin2

cable.

Notes:

1.

These

terminals

are

strapped

together

(on

the

back

of

the

connector)

at

the

factory.

Remove

this

strap

if

the

REMOTB

STOP

facility

is

used.

2.

Relay

contacts

may

be

changed

to

provide

a

momentary

open

circuit.

3.

Phasing

must

be

observed

in

Stereo

systems.

Terminals

1-3-5

are

identical

to

terminals

2-4-6

respectively.

FIGURE

2.2

RECORDING

AMPLIFIER-

REAR

VIEW

.T601

P602

FIGURE

2.3

EXTERNAL CONNECTIONS

TERMINAL FUNCTION CONNECTOR

601

1

Audio

Gxound

3-5

Monophonic

(or

stereo)

2

Audio

Ground

4-6

Right

Stereo

Audio

input

(if

used)

onnector

602

cable.

OJNNECIOR

for

use

with

the

CONNECTOR.

603

1-2

.3

4

5-6

7-6

9-10

Remote

Record

Set

Remote

Lights

Common

No

Connecti:')n

Remote

Tone

Keying

No

Connection

FIG.

2.4

Tone

Keying

J603

."

Amplifier

connecting

OPERATION

SECTION

J

3.1

RECORDING

3,

3.1

RECORDING

AMPLIFIER

CONTROL

FUNcnONS,

GAIN

CONTROL:

'lbe

Record~

.blp111'ier

gain

control

MOB

is

und

tor

regulating

the

recording

level

as

indicated

by

the

VU

1Ieter

M601.

~ORD

SET: 'lbe

Record

Set

switch

S601

is

used

for

placing

the

production

system

in

the

recording

mode.

SECONDARY

CUE:

'!he

Secondary

Cue

swi.

tch

s603

is

used

for

keY'ini

the

150

cycle

tone

generator.

tERTIARY (AUXn,IARY)

CUE:

The

Tertiary,

or

Auxiliary,

Cue

switcb

S602

i.

used

tor

keying

the

8000

cycle

tone

generator.

:3

.1.2

RECORDING

PHOCEDORE;

The proceciW'e

tor

recording

one

or

more

productions

1.,

al!!

follows:

a.

b.

c,

d.

e.

f.

Insert

an

ERASED

tape

cartridge

1nto

the

right

side

ot

the

cartridge

slot

in

the

Playback

Unit.

Note

that

the

STOP

indicator

1s

illum1n&ted

indicating

the

cartridge

1s

properly

placed.

Momentarily

press

the

RECORD

SET

switch

8601.

The

svitch

w1ll

be

ll.lllllinated

by

the

tnt.mal.

pilot

lup.

Adjust

the

INPUT

CONTROL

MOB

so

the

program

level

reads

o

(zero)

on

the

VU

meter

on

the

most

intense

program

peaks.

Press

the

START

switch

on

the

Playback

Unit

and

start

re-

cording

immediately.

Opon

completion

of

the

recorded

production.

1I01Ientarily

press

the

STOP

switch

ONLY

11' lIore

than

one

production

is

desired

on

the

lUte

cartridge.

If

only

one

production

is

to

be

llJIIed

on

the

cartridge,

allow

the

tape

to

continue

nznning

1ll'ltil

it

is

stopped

by

the

automatic

cue

tone.

When

reeordinl

more

than

one

production

on

a

single

tape

cartridge.

follow

the

procedure

l1st.d

in

steps

c

through

•

for

.ach

recording.

Upon

coaplet1.on

of

the

1'1nal.

recorded

production

~

allow

the

tape

to

continue

running

until

1t

1.

stopped

by

the

automatic

cue

tone.

3-1

The

1000

cycle

Primary

cue

tone

is

recorded

automatically

at

the

beginning

of

the

recording.

If

the

Tertiary

tone

is

to

be

used,

it

may

be

applied

at

any

time

during

the

recording.

If

the

Secondary

(end

of

message)

tone

is

used,

it

should

be

applied

1lnmed1ately

af'ter

the

end

of

the

program

material.

If

desired.

the

Secondary

&nd

Tertiary

tones

may

be

inserted

after

the

message

has

been

completely

recorded.

This

permits

monitoring

and

accurate

placement

of

the

tones.

J.

2

PLAYBACK

J.2.1

CONTROL

FUNCTIONS:

START_RUN:

The

START

switch

51

causes

the

control

cireui

ts

solenoid

to

be

energized;

and

the

tape

to

be

set

in

motion.

is

illuminated

by

an

internal

lamp

when

the

tape

is

rmming

Playback

or

Record

mode.

and

the

This

15

wi

tch

in

a1

tiler

the

STOP_READY:

The

STOP

switch

S2

is

used

to

manual.ly

stop

tape

motion.

This

ewi

ten

is

illuminated

by

an

internal

lamp

l'hen

the

cartridge

is

properly

:!.nserted

and

the

Playback

1s

in

the

IIrea.dy" mode.

ON_OFF:

The

ON_OFF

s'Wi

tch

S3

applies

power

to

the

entire

unit.

An

internal

neon

lamp

illuminates

this

switch

when

the

unit

is

ON.

PFlDGRAM

GAIN:

The

Progr&lll

Gain

Controls

Rl

and

RJ

are

lIlO1.mted

on

the

main

chassis.

and

are

used

for

adjustment

of

program

output

level.

R3

is

not

used

in

monophonic

uni

ts.

CUE

SENSITIVITY: The

Cue

Sensi

t1

vi

ty

control

R2

il5

mounted

on

the

main

chas!5is.

3.2.2

PLAYBACK

PROCEDURE:

The

procedurt!

for

routine

on-the-air

playback

of

program

material

is

as

follo~:

a.

Insert

a

recorded

Uipe

cartridge

into

the

right

side

of

the

cartridge

slot.

b,

Observe

that

'\:be

STOP-READY

control

is

illuminated.

indicating

the

cartridge

has

been

properly

inserted,

and

that

the

un1

t

1s

ready

for

on-the-air

playback.

c.

Momentarily

press

the

START

switch

51.

Tape

motion

will

be

!!tarted

and

will

continue

until

the

automatic

cue

tone

i8

picked

up

by

the

cue

head.

3-2

~DmN'IS

SECTION

4

4.1

REX;ORDING

AMPLIFIER

4.1.1

BIAS

LEVEL:

When

purchal!ling

a new

record

amplifier

or

replacing

record

heads.

it

w:1ll

be

necessary

to

check

the

bias

adjWltaent

on

the

record

amplifier.

Since

the

inductance

of

the

record

heads

IB&:1'

vary

tJoa.

head

to

head,

biaB

voltage

should

be

readj'wlted

,ach

time

the

record

amplifier

is

used

with.

new

head

or

a

different

playback

u:nit

in

order

to

maintain

proper

recorded

frequency

response

and

output.

'l'be

bias

&dj118t-

men

t

should

be

made

uaing

tbe

type

of

tape

which

w1ll

normally

be

ued.

The

following

procedure

should

be

ued

when

bia8

adjustments

are

required:

SET_

UP

__The

output

of

the

pll3'back

should

be

connected

to

a

console

or

any

convenient

VU

meter.

Connect

an

audio

oacilia

tor

to

the

record

amplifier

input.

For

:;'oeation

of

adjustment

controls

..

e

Record

Allpl1.t1er

Chassis

Layout.

Steps

to

follow

in

adjustment--

1.

Set

the

oscillator

frequency

at

1000

cycles.

2.

Insert

an

erased

Jt

or

.5t

minute

cartridge

in

the

Playback

Unit.

J.

On

the

Recording

Amplifier_Press

the

Record

Set

Button

and

adjuat

the

Record

Level

to

-5

VUe

4.

While

recording,

monitor

the

Playback

output

and

adjust

trimmer

CB06

with

a

non-magnetic

8crewdri

vel'

for

marllIIlIII

playback

reading.

Readjuat

C806

in

both

a

clockwise

ard

cO'Ol'lterclockwise

direction,

untu

a t

db

drop

in

output

i.

noted..

Then

adjust

to

tile

exact

peak.

NOTE:

Re-erase

cartridge

if

un1.t

cues.

5.

On

the

Playback

Unit

Head

Assembly

__

unplug

the

green

(cue

play)

head

lead

and

insert

the

red

(program

play)

head

lead

in

1

ta

place.

'1'b.1s

pem1

ts

IIOni

to

ring

or

the

cue

track

from

the

playback

output

while

ca

bia.

adjuta.nt.

are

be1nc

made.

6.

Remove

the

cover

from

160j

in

the

Record

Amplifier

and

1I1&I"1ual.l.y

operate

the

relay.

'l'b1s

will

eauae

1000

eycle.

to

be

recorded

on

the

cue

track.

7.

While

manuaJ.ly

operating

160).

&d~t

tn.aer

<:50.5

with

•

nDn...

aagnetic

Bcr81Kir1ver

for

IUX1.mta

playback

re&dinK.

UteI'

th.

peak

adjustunt

hall

been

reached,

turn

ca05

ccnmtereJ.odnr1

••

until

th.

output

reading

hu

dropped

It

db.

LA"

CBOS

ad

justed

to

th1.I

aet

tin«.

4...1

8.

Return

the

head

leads

to

their

proper

plugs

(see

Head

Bracket

...

Ulbly)

and

place

un1

t

in

service.

4.1.2

CUE

RECORD

LEVELS:

1be

Cue

Record

Levels

are

adjU8table

by

R9l?

(Pl'1m&ry), R905

(Secondary)

and R906

(Tertiary).

So

long

..

replao4t1Unt

heads

a"

of

the

same

type

a.

the

original,

no

change

in

Cue

~cord1ng

Leveb

should

be

neoenary.

Proper

adjutment

of

the

level.

controls

(arter

Cue

Bias

adjutment

has

been

performed.

in

accordanee

with

4.1.1)

should

provide

"covery

levels

from

the

Cue

Play

head

as

follovs:

Primary

(UC)

•••••••••••••

1.5

MY

Secondary

(150

cyc1e5)

••••

0.5

MV

Tertiary

(8

IC)

•••••••.•••

1.5

MV

4 .

1.

3

CUE

ffiEQUENCY:

Th" Cue

Freguenc1es

are

adjust.ble

by

means

of

the

slug

tuned

coils

L90)

(Pr1lllary).

L901

(Secondary)

and

L902

(Tertiary).

Adjustments

of

these

colla

are

perfol"'llled

at

the

ATe

factory

and

should

b.

attempted

in

the

f1eld

only

provided

proper

equipment

is

available

for

accurately

checking

the

oscillator

frequencies.

4.

2

PLAYBACK

Se.

Playback

Chassis

Layout

tor

location

of

adjustment

controls.

4.2.1

CUE

SENSITIVITY: The Cue

Sens

1

ti

vi

ty

is

adjust.ble

by

R2

which

111

mounted

on

top

of

th"

main

chassis

of

the

playback

unit.

This

control

is

preset

at

the

Ate

factory

a.ncl

should

"quire

no

further

adjustment.

CAUTION:

Increasing

the

Cu.

Sensitivity

beyond. 0.75

MV

at

lIC

may

eaue

false

cueing

of

the

Playback

Oni

t.

See

5.2.

4.2.2

pRQGJUM

GAIN:

The

Program

Gain

controls

Rl

and

R)

are

moun

ted

adjacent

to

R2

on

the

main

chassis

of

the

playback.

RJ

is

not

U8ed

1n

monophonic

units.

The Program

Gain

control

is

preset

at

the

ATe

factory

and

sbould

nqu1re

no

further

adjU8tment.

4.2.

J

~

ALIGNMENT:

A.

head

al1g7lZ11ent

should

be

a

matter

of

routine

prevent.t1ve

lII&1ntenance,

thill

topic

is

covered.

in

Section

5

ot

thi21

M&n0&l..

4_2

The

NAB

standards

,

"That

the

standard

cue

tone

frequency

shall

be 1000

cps

+

75

cps."

The

Criterion

primary

cue

oscillator.

amplifier,

and

detector

are

des

in

accordance

with

this

standard.

Cue

tone

B.

amplifiers

and

detectors

built

prior

to

the

of

the

NAB

standards

for

car

tape

recording

and

reproducin2

varied

grea

from 1000

cps.

When

the

Criterion

is

used

to

recorded

on

older

tuned.

cue

amplifier

must,

therefore.

be

broad-

A

broad-tuned

pr

cue

will

r

to

all

cue

iea

between

and 8000

cps.

This

precludes

the

use

of

secondary

and

tertiary

cue

tones

on a

modified

Criterion

playback.

Cut

the

leads

on a

25

mfd.,

•

cover

the

leads

with

the

as

shown

in

electrolytic

capacitor

inches

ths

of

soa2hetti.

and

install

The

25

mfd.

capacitor

bypasses

the

tuned

circuit

and

results

in

a

non-

tuned

tone

detector

which

will

respond

to

a wide

range

of

frequencies.

25mfd

--I-...

(TO

BE

ADDED)

o

BOTTOM IOARD

PRIMARY

CUE

AMPLIFIER

CRITERION

PLAYBACK

UNIT

FIGURE

1

LSOI

(MOUNTED

BENEATH

BOARD)

5/66

MAINTENANCE

~ECTION

5

.5.1

RECORDING

AMPLU'IER

Under norma.!

operat1ni

conditiona

the

Recording

Amp11fier

requires

no

routine

maintenance

•

.5.2

PLAYBACK

UNIT

The A

TC

Crt

tenon

Playback

Un!

t

is

factory

adjwsted

to

provide

p.ak

performance

and

under

normal

operating

conditions

should

reqtt1re

no

routine

electrical

maintenance.

5.2.1

HEAnS:

As

wi

th

any

quali

t,.

tape

equipment

frequent

cheek

IS

of

head

alignment.

condition

and

cleanliness

are

imperative

for

maximUM

performance

and

trouble-!ree

operation,

Proper

bead

care

is

espeeially

ilIportant

on

the

production

equipnent.

Dirt,..

misaligned

or

worn

heads

are

frequenU,..

at

fault

when

probl

...

are

encountered

1n

tn.

areu

of

lov

progr

..

output,

poor

frequency

respon.e

and

false

or

udSBing

cues,

Cueing

problems

are

easily

detectable,

therefore,

Berv.

as

good

indicators

for

the

need

of

head

maintenance.

(CAUTION:

In

the

_jori

ty

of

oall8S

cueing

problema

are

only

cOlllpOmded

by

readj'u.9tment

of

either

Cue

Record

Level

or

Cue

Sensitivity

to

.ettini_

other

than

those

ouUined

in

S~tion

4).

To

facilitate

.asy

head

alignment

cheeks

standard

tapes

should

be

recorded

immediately

upon

receipt

of

tne

equ1~ent.

Tapes

should

be

recorded.

as

folloVII;

a.

b.

c.

d.

Record

one

eartr1dge

with

l2KC

at

a

Record

Lenl

of

..

10

VUe

Playback

the

cartridge

and

note

the

output

level.

Record

one

cartridge

whUe

manually

operating

160)

in

the

Record

Amplifier

(no

program

input

on

this

tape).

This

action

records

a

continuou

lIC

tone

on

the

Cue

Track.

Reverse

the

Cue PlAy and

Frogru

Play

head

leads.

Play

back

the

tape

and

note

the

output

level.

'WhUe

manually

depre

..

ing

the

Secondary

Cue (1.50

eycles)

button

on

the

Record

A.pl1!1er

(do

not

manully

operat.

(603)

repeat

step

b

tor

one

cartridge.

WhUe

unually

depressin«

the

Auxiliary

Cue

(BIC)

button

on

the

Record

AIKpl1t1er

(do

not

untJ&l.ly

operate

1603)

.

repeat

step

b

for

one

cartridge.

5-1

e.

Uling

a

clean

3i

minute

cartridge

record

a

single

1000

cycle

cue

tone

(do

not

record

program

material

on

this

tape).

The

tone

is

recorded

automatically

at

the

be-

ginning

of

the

recording

process.

Allow

the

machine

to

run

until

the

tape

eues.

Rerun

the

tape

and

note

the

exact

tirue

required

for

playback.

This

tape

should

be

kept

on

hand

as

•

timing

standard.

Of

the

various

causes

of

cueing

difficulties.

that

of

head

misalignment

is

most

frequently

encountered.

The

following

discussion

describes

mOmlting

and

alignment

of

heads

on

the

Criterion

equipment.

Installation

of

Heads:

a.

Install

the

~

lock

nut

on

the

head

mO'lUlt1ng

stlXi.

b.

Carefully

thread

the

head

leads

through

the

head

mounting

hole.

Use

tubing

over

leads

as

protection

against

cutting

insulation

while

threading

the

head.

Screw

the

head

into

the

mO\lJlting

hole

'IUltil

the

apex

of

the

head

face

is

27/J211

plus

or

minus

11'32

11

from

the

front

edge

of

the

support

member.

NOTES

:

1.

Do

not

twist

or

apply

tension

to

the

head

leads.

2.

When

tightening

the

head,

apply

pressure

only

to

the

boss

located

on

the

back

of

the

head

cup--not

directly

to

the

head.

3.

Solder

the

head

leads

only

after

completion

of

the

ins

talla

tion.

Height

Adjustment:

Figure

I

illustrates

the

location

of

adjus'bnent

points,

mounting

screws

and

output

connectors.

The

following

steps

outline

proper

adjustment

procedures;

a.

Turn

the

lock

screw

counterclockwise

until

the

screw

is

well

above

the

look

(maximum

down)

position.

b.

Adjust

screw

A.

for

9/16"

height

of

the

top

of

the

upper

track

above

the

deck

surface.

c.

Adjust

screw

B

for

exact

perpendicularity

between

the

deck

surface

and

pole

faces.

This

may

be

done

using

a

metal

gauge

(e.

g.

meW

rule)

loIb1ch

is

known to

be

square.

ReISt-

ing

one

edge

of

the

gauge

on

the

deck

surrace.

move

the

gauge

against

the

tace

of

the

head.

At

the

point

ot

perpencUcul.ar1

ty,

no

space

should

b.

visible

between

the

head

and

gauge

as

the

g.~e

115

resting

nat

on

the

deck•

.5-2

II

ffimnl.!l

\------41

000

..

8.

REO

PROGRAM

PLAY

LEFT

GREEN

CUE

PLAY

BROWN

CUE

RECORD

GRAY

PROGRAM

PLAY

RIGHT

STEREOPHONIC

BLACK

PROGRAM

RECORD

RIGHT

BLUE

PROGRAM

RECORD

LEFT

GREEN

CUE

PLAY

@

REO

PROGRAM

PLAY

BROWN

CUE

RECORD

@

BLUE

PROGRAM

RECORD

MONOPHONIC

HEAD

LEAD

COLOR

CODE

MICROSET

ASSEMBLY

CREAR VIEW,

:::t

3:

rr1

1>

(")

0

:::0

0 E

fJ)

rr1

:::c

-i

rr1

l>

(")

(f)

0

(f)

r

rrw

0

i:

:n

OJ

n

r:(

0

C

IT!

Gates CRITERION Series User manual

Popular Amplifier manuals by other brands