TransTel Communications AH-11(R) Installation And Operation Manual

AH-11(R)

’

TRANEITEL

30

CPS

TELEPRINTERS

Receivq—Only

Teleprmter

-|

1.

H1-

_'_

0

PE

RATION

„

MANUAL

Farm

Sir-2ms

Ihm

PROPRIETARY

STATEMENT

The

manual

contains

proprietary

information

of

Extel

Corporation

intended

solely

for

the

information

and

use

of

parties

operating

and

maintaining

the

equipment

described

herein.

Such

proprietary

information

may

not

be

used,

reproduced

or

disclosed

to

any

other

parties

or

for

any

other

purpose

without

the

express

written

per-

mission

of

Extel

Corporation.

Copyright

©

Transtel

Communications

Ltd.‚1975

_

30

cps

Teleprinter

INSTALLATION

and

OPERATION

MANUAL

NOTE

This

manual

applies

only

to

the

AH-11R

plain-paper

teleprinter.

A

separate

Installation

and

Operation

Manual,

SV-162-76,

applies

to

the

AH-11RS

Sprocket

Feed

Teleprinter.

This

manual

may

be

ordered

from

Transtel

Communications

Ltd.

Li

March,

1976

C

O

N

T

E

N

T

S

SBCtion

Page

1.

INTRODUCTION

1-1.

General

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

1-1

1-2.

Principles

of

Operation

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

1-2

a.

Character

Printing

and

Spacing

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

..

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

1-2

b.

Paper

Feed

Drive

Mechanism

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

1-2

0.

Carriage

Return

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

1-3

1-3.

Special

Features

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

1-3

a.

Special

Character

Fonts

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

1-3

1

.

Lower

Case

Characters

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

1-3

2.

Bold

Face

Characters

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

1-3

3.

Expanded

Characters

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

1-3

b.

Variable-Width

Underlining

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

1-3

c.

Short

Lines

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

1-4

(:1.

Auto

Message

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

1-4

e.

Half-Line

Feed

Feature

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

1-4

f.

Last

Character

Visibility

(LCV)

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

1-4

g.

96-Character

Mode

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

1-4

h.

Full

Monitor

Mode

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

1-4

1-4.

Teleprinter

Code

Reception

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

1-4

1-5.

Operating

Frequencies

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

1-6

1-6.

Available

Options

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

1-7

a.

Sensor

Unit

for

Low

Paper

Alarm

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

1-7

b.

Selective

Calling

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

‚

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

1-7

c.

Paperwinder

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

1-7

d.

Pedestal

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

1—7

1-7.

Characteristics

and

Specifications

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

1-8

a.

Printing

Characteristics

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

1-8

b.

Paper

Specifications

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

1-8

c.

General

Specifications

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

1-8

2.

EOUIPMENT

INSTALLATION

2-1.

General

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

2-1

2-2.

Unpacking

and

Inspection

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

2-1

2-3.

Installation

Location

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

2-2

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

March,

1976

Page

2-4.

Controls

and

Indicators

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

2-2

a.

Pewer

ÜNIÜFF

Switch

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

2-2

b.

Fewer-0N

Lamp

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

2-2

c.

Circuit

Alarm

Lamp

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

2-2

d.

Speed

Centrel

Switch

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

2-3

2-5.

Fewer

Interface

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

2—3

at

General

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

2-3

h.

Changing

Operating

Veltage

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

2-3

243.

Signal

Interface

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

2-4

a.

Neutralfi’elarifludie

Lines

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

2-4

h.

RES-232

(FHA)

Interface

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

2-5

L‘-

PelarerElA

Interface

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

2—6

2-7.

Pregraniniing

Optiens

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

2—7

a.

7981

Series

5-L9ve!

Legic

Board

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

2-7

h.

7085,

7086,

T087,

7986

Series

5-

‚Fa-Level

Leg'ic

Beard

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

53—?

2-8.

Interna]

Access

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

2-3

a.

'I'eleg'irinter

Cever

RemeralfReplacement

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

2-3

h.

Access

te

Printed

Circuit

Beard

Assemblies

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

2-3

3.

OPERATING

INSTRUCTIONS

3-1.

General

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

3-1

3-2.

Paper

Installation

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

3-1

a.

'I‘ynes

ef

Paper

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

3-1

h.

Paper

Leading

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

.

3-1

c.

Hi‘l‘nU‘UEfl

ef

Paper

frern

Paperwinder

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

3-3

3-3.

Hibbenlnstallatien........................................................3-4

3-4.

Message

Remeval

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

3-5

a.

Single-Cele}?

Paper

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

3—5

h.

Multi-Cepy

Paper

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

3-5

3-5.

Operating

Specificatiens

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

3-6

a.

Line

Feed

Switch

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

3—6

h.

Speed

Centre]

Switch

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

3-7

c.

Special

Character

Fonts

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

3-7

d.

Hal

f-Line

Feedeeerse

Half-Line

Feed

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

3-7

3-6.

Operator-Level

Maintenance

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

3+?

PRINTED

IH

THE

L.I.h'..

AH-Sv

123/124-758

March,

1976

SECTION

1

INTRODUCTION

Figure

1-1

Series

AH

Teleprinter

1-1.

GENERAL

The

Series

AH

Teleprinter

is

a

solid-state,

electronic,

receive-only

unit

which

provides

a

5

x

7

dot

matrix

printout

upon

receipt

of

serial

data

from

appropriate

transmission

sources.

The

unit

is

de-

signed

for

continuous-

or

intermittent-duty

applications,

and

is

capable

of

printing

asynchronously

at

any

speed

up

to

30

characters

per

second.

Series

AH

Teleprinters

are

designed

to

operate

from

either

a

115

V

AC

or

230

V

AC,

50

to

400

Hz,

power

source.

Though

the

electronic

control

circuitry

is

advanced,

the

printing

mechanism

of

every

teleprinter

in

the

series

is

simple—and

every

machine

operates

with

little

noise

and

great

reliability.

Thanks

to

the

machine’s

modular

construction,

the

electronic

and

mechanical

assemblies

can

be

removed

easily,

and

many

components

may

be

used

interchangeably,

wherever

feasible.

The

teleprinter

cover

has

a

hinged

lid,

allowing

easy

access

to

the

typing

unit

for

paper

and

ribbon

threading.

A

window,

built

into

the

hinged

lid,

makes

the

copy

visible

during

data

reception

and

provides

a

cutting

edge

for

the

removal

of

completed

messages

from

the

machine.

PRINTED

IN

THE

LJ.H..

AHsv

123I124J5Es

1-1

1-2.

PRINCIPLES

OF

OPERATION

The

following

is

a

general

discussion

of

the

basic

principles

of

operation.

A

more

detailed

analysis

of

operation

is

provided

in

subsequent

sections

of

the

manual.

a.

Character

Printing

and

Spacing

Printing

takes

place

when

the

paper

is

struck

by

any

of

seven

electronically-activated

needles

mounted

vertically

in

the

carriage

assembly.

The

carriage

assembly

is

moved

along

the

platen

by

a

special

stepper

motor,

which

de-

rives

its

impulses

from

the

electronic

circuitry

of

the

machine.

The

carriage

assembly

moves

eight

steps

for

each

character—the

first

three

steps

provide

the

spacing

between

characters,

and

the

remaining

five

steps

are

used

to

print

a 5

x

7

dot

matrix

character

pattern,

as

illus-

trated

in

Figure

1-2.

The

spacing

mechanism—comprised

of

the

spacing

drive

stepper

motor,

pulley,

drive

belt,

drive

pawl,

and

associated

gears

and

cap-

stans—laterally

positions

the

carriage

assembly

so

that

the

characters

are

displayed

evenly

in

horizontal

lines

on

the

paper.

The

spacer

is

activated

each

time

a

character

or

space

is

called

for

in

the

received

code.

Internal

logic

suppresses

carriage

spacing

when

certain

‘func-

tion’

characters

are

received

by

the

teleprinter.

b.

Paper

Feed

Drive

Mechanism

The

Paper

Feed

Drive

Mechanism—com-

prised

of

pulleys,

drive

belt,

platen,

and

a

paper

feed

drive

stepper

motor—positions

the

paper

vertically

so

that

spacing

between

printed

lines

is

consistent.

4.4

lines

per

inch

are

normally

printed

when

the

unit

is

func-

tioning

in

the

single-line

feed

mode.

Upon

receipt

of

a

‘line

feed’

encoded

character,

the

paper

feed

drive

mechanism

advances

the

paper

vertically

to

the

next

line

position.

Multiple

line

feeds

are

controlled

by

a

three-

position

toggle

switch

at

the

lower

left-hand

side

of

the

front

of

the

unit.

See

Section

3

for

instructions.

March,

1976

:z:

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inn.

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1215124358

PRINTED

IN

THE

UJ'E.

1-2

.

..

-‚.-_.‚

__

March,1976

EhPHHDEU

i;HH:2H:::EHö_-;

c.

Carriage

Return

The

carriage

return

action

is

performed

by

the

spacing

drive

stepper

motor,

drive

belts,

and

gears.

Upon

receipt

of

a

‘carriage

return’

encoded

character,

the

teleprinter’s

control

circuitry

causes

the

spacing

drive

stepper

motor

to

reverse.

When

this

happens,

the

idler

gear

disengages

from

the

right-hand

capstan,

per-

mitting

the

force

of

the

carriage

return

spring

to

return

the

carriage

to

the

left-hand

margin

to

begin

a

new

line

of

print.

A

decelerator,

which

is

an

inertia

device,

cushions

the

car-

riage

assembly

as

it

reaches

the

left

side

of

the

platen.

In

most

instances,

the

carriage

return

function

is

performed

coincidentally

with

the

line

feed

function,

so

that

the

paper

will

be

advanced

vertically

when

the

carriage

is

returned

to

begin

a

new

line.

In

a

Series

AH

Teleprinter,

an

internal

elec-

tronic

counter

records

the

lateral

position

of

the

carriage

at

all

times.

Thus,

if

the

machine

has

been

arranged

for

either

a

50,

69, 74,

or

80

character-per-line

format,

the

carriage

will

automatically

be

returned

to

the

left-hand

margin

when

the

internal

counter

reaches

this

pre-set

number.

This

will

occur

whether

a

‘carriage

return’

character

has

been

received

or

not.

Furthermore,

the

electronic

control

circuitry

of

a

Series

AH

Teleprinter

determines

the

exact

time

span

required

to

let

the

carriage

assembly

settle

at

the

left-hand

margin

before

the

printing

of

a

new

line

is

begun.

1-3.

SPECIAL

FEATURES

3.

Special

Character

Fonts

1.

Lower

Case

Characters.

The

AH

Tele-

printer

incorporates

a

number

of

features

which

expand

its

printing

capabilities

beyond

those

associated

with

more

traditional

tele-

printer

designs.

The

most

obvious

feature

is

the

unit’s

ability

to

print

lower

case

char-

acters.

The

standard

lower

case

characters

are

formed

on

a 5

x

5

dot

matrix,

rather

than

the

usual

5

x

7

matrix.

As

a

special

option

(specified

by

the

purchaser

at

the

time

of

ordering),

lower

case

characters

can

be

printed

with

descenders

which

actually

extend

below

the

line

of

copy

(as

in

the

letters

‘j’,

‘p’,

‘q’,

etc.).

To

accomplish

this,

the

logic

board—through

its

special

program—moves

the

paper

up

and

down

or;

the

platen

while

printing

is

in

pro-

gress.

This

option

is

available

only

on

machines

operating

at

up

to

15

characters

per

second.

2.

Bold

Face

Characters.

The

Bold

Face

command

to

the

teleprinter

causes

all

sub-

sequent

characters

to

be

printed

in

a

6

x

7

dot

matrix,

instead

of

the

normal

5

x

7.

The

extra

column

of

dots

gives

the

characters

a

heavier

or

‘bolder’

appearance.

This

feature

outmodes

the

more

traditional

change

from

black

to

red

ribbon

for

accenting

portions

of

a

text—and

the

bold

face

characters

appear

on

every

page

of

a

multiple-copy

form.

3.

Expanded

Characters.

The

ASCII

AH

Series

Teleprinter

is

also

equipped

with

an

Expanded

Character

Set,

for

even

more

em-

phasis

than

that

of

bold

face.

Expanded

char-

acters

may

be

used

to

set

off

page

or

paragraph

titles,

or

to

emphasize

material

within

the

text

itself.

An

expanded

character

is

made

up

of

six

unprinted

and

ten

printed

columns,

producing

a

10

x

7

dot

matrix

character.

Note:

though

expanded

characters

appear

to

be

taller

than

normal

ones,

they

are

actually

the

same

height

as

the

others.

Thus,

normal

line

feed

need

not

be

modified

for

these

characters.

b.

Variable-Width

Underlining

The

ASCII

AH

Series

Teleprinter

features

an

‘underline’

character,

printed

far

enough

below

the

text

line

to

enhance

greatly

the

readability

of

the

underlined

characters.

Usually,

the

‘underline’

character

is

eight

columns

wide—-so

that

repeated

underlining

results

in

a

continuous

line

with

an

even

ap-

pearance.

Since

a

normal

character

consists

of

three

blank

columns

and

five

printed

col-

umns,

it

is

necessary

to

suppress

underlining

to

five

columns

below

the

first

character

of

a

sequence.

The

ASCII

AH

Teleprinter

does

this

automatically.

The

unit

also

accurately

underlines

bold

face

and

expanded

characters.

PRINTED

IN

THE

UJ‘C.

AH—SU

1231’12-1-753

1-3

l._.___——

c.

Short

Lines

The

Series

AH

Teleprinter

pos-

sesses

an

extraordinary

ability

to

print

many

short

lines

of

text

FEE?

without

the

use

of

‘fill

charac-

51.9.1}?

ters’.

The

unit’s

128-character

.-

um

‚1:1,

storage

buffer

and

ability

to

ac-

3"”-“"--'

celerate

printing

speed

to

50

’HFF;

characters

per

second

permit

-,-

the

user

to

print

lines

with

as

few

as

15

characters

contin-

uously,

without

exceeding

the

HP

buffer’s

storage

capacity.

Ad-

ditionally,

up

to

56

lines

of

10

characters

each,

or

27

lines

of

53:5

4

characters

each,

may

be

::P,

printed

before

the

buffer

be-

_

comes

full.

d.

Auto

Message

The

ASCII

AH

Series

Teleprinter

includes

an

Auto

Message

Option

which,

when

activated,

causes

all

of

the

printable

characters

in

ASCII

to

be

printed

after

power

enters

the

unit.

This

option

helps

verify

that

the

printer

is

in

good

working

condition.

However,

the

Auto

Message

Option

does

not

test

the

input

board.

e.

Half-Line

Feed

Feature

This

feature

is

often

used

for

subscripts

or

other

special

requirements.

The

procedure

can

also

work

in

reverse,

for

the

printing

of

superscripts—when

footnoting

is

desired—and

exponents.

f.

Last

Character

Visibility

(LCV)

If

a

pause

in

the

incoming

data

causes

the

carriage

to

stop

printing

for

more

than

one

second,

a

special

interval

line

feed

advances

the

paper

21/2

lines

upward.

This

makes

the

last

characters

much

more

readable.

When

incoming

traffic

resumes,

the

platen

retracts

2%

line

feeds

and

continues

printing

from

the

point

where

it

had

stopped.

March,

1976

g.

96-Character

Mode

In

addition

to

the

usual

64-

and

128-char-

acter

modes

of

the

ASCII

code,

the

ASCII

AH

Teleprinter

offers

a

96-character

mode

with

both

upper-

and

lower-case

characters.

h.

Full

Monitor

Mode

In

its

Full

Monitor

Mode,

the

ASCII

AH

Teleprinter

prints

3

unique

symbol

for

each

of

the

128

possible

ASCII

characters,

including

‘fill

characters’

and

‘control

characters’

(i.

e.,

carriage

return,

line

feed)

which

do

not

other-

wise

generate

printed

symbols.

While

in

this

Full

Monitor

Mode,

the

unit

will

print

the

symbols

for

carriage

return

and

line

feed,

but

will

not

execute

these

mechanical

Oper-

ations

at

the

times

they

are

called

for

in

the

text.

Instead,

the

teleprinter

will

completely

fill

each

line

with

the

maximum

number

of

characters

permitted

and

then

automatically

perform

a

carriage

return

and

a

line

feed.

This

mode

of

operation

is

most

useful

for

generating

compact

copy

and

greater

utilization

of

total

printing

area.

To

preserve

the

original

format

of

the

text

(in

terms

of

line

width

and

spacing

between

paragraphs),

the

user

may

engage

the

Special

Full

Monitor

Mode.

In

this

mode,

not

only

are

symbols

printed

for

each

of

the

128

ASCII

characters,

but

the

readability

of

the

printed

c0py

is

improved

through

a

line

format

which

closely

resembles

what

would

be

printed

if

the

mode

were

not

being

used.

1-4.

TELEPRINTER

CODE

RECEPTION

Seven

Logic

Board

Assemblies,

each

with

its

own

requisite

coding

for

input,

are

currently

available

in

the

AH

Series

of

teleprinters.

The

particular

board

installed

in

any

given

machine

is

specified

at

the

time

of

ordering

and

should

be

properly

adjusted

to

conform

to

the

user’s

specific

requirements.

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

1

4

March,

1976

Messages

transmitted

to

the

teleprinter

are

in

the

form

of

on/off

pulses

sent

on-line

in

rapid

suc-

cession

(Serialized,

or

Serial,

Data)

according

to

a

specified

signaling

code

arrangement.

In

current

widely-used

codes,

5,

6,

or

8

on/off

bits

signify

a

given

character

or

function.

The

teleprinter’s

logic

circuitry

must

decode

these

sequences

of

bits

to

produce

an

intelligible

printout.

Standard

codes

which

can

be

accepted

by

current

AH

Series

machines

are:

0

5-Level

(Baudot),

US-A,

-B,

-C

0

CCITT

N0.

2

with

E

sign

0

8-Level

(ASCII)

0

CCITT

N0.

5

Each

character

and

function

received

by

the

teleprinter

is

represented

by

a

series

of

current

or

no-current

time

intervals

on

a

neutral

DC

current

loop.

Current

flowing

on-line

is

referred

to

as

a

‘mark’,

while

a

no-current

condition

is

termed

a

‘space’.

(In

Polar

DC

systems,

‘mark’

and

‘space’

conditions

are

determined

by

the

direction

of

current

flow.

In

audio

communications

systems,

a

shift

in

the

frequency

of

the

tone

on

the

line

determines

‘mark’

and

‘space’.)

One

of

the

principal

codes

used

by

the

telecommunications

industry

is

the

5-Level

CCITT

No.

2

code.

In

5-Leve1

encoded

characters,

each

character

or

function

is

defined

by

at

least

7

on/off

units—

one

start

pulse,

one

stop

pulse,

and

five

bits

(or

levels)

which

determine

the

character

or

function.

Figure

1-3

illustrates

the

transmitted

character

‘E’

in

this

code.

The

start

and

stop

pulses

synchronize

the

message

receiver

with

the

transmission

site,

informing

the

receiver

of

the

start

and

finish

of

each

character.

STIHT

319p

PULSE

I_2LALAI5PUL3E

IUHIT

IUHIT

‘IUHIT

'IUHIT

'IUHIT

'IUHIT'

10:

non:

unrr:

Amrs

Figure

1-3

5-Lerel

Character

'E“

III-“m

‚ü

LEVELS

0F

DATA

EITHER

HARE

_,

CHARACTER

LENGTH

AT

LEAsT

7

UNITS

INCLUDING

START

AND

STOP

PULSES

With

five

bits

(levels)

available

for

defining

characters

and

functions,

the

CCITT

N0.

2

code

can

basically

accomodate

32

permutations.

However,

through

the

‘letters’

and

‘figures’

shift,

it

is

pos-

sible

to

double

the

complement

of

characters

and/or

functions

to

64.

CCITT

No.

5

is

an

8-Level

code,

of

which

USASCII

is

an

American

version.

Again,

start

and

stop

pulses

synchronize

the

message,

but

this

code

uses

eight

bits

(levels)

to

define

a

character

or

func-

tion—bits

1

through

7

delineate

the

character,

while

bit

8

is

used

for

parity.

With

seven

levels

of

mark

or

space

information

available,

the

CCITT

N0.

5

code

can

accommodate

128

permutations.

Of

these,

96

are

assigned

to

printing

characters,

the

rest

to

non-printing

(function)

characters

or

_‚

no

assignment.

Figure

1-4

is

a

pictorial

representation

of

the

character

‘E’

in

the

8-Level

CCITT

N0.

5

code.

START

STDP

IIlrIrRK

—

[——

SF'ACE

-

-

-

2

I

I

I

I I

I I I

I

UHITIUHITIUHITIUHITIUNITIUHITIIJHITIUNITIUHITI

UNITS

Figure

1-4

8-Level

Character

'E'

|==I

||

UNITS

0F

TIHE

PRINTED

IN

THE

UJ'E.

AH-SV

123124153

L9.‘

L5

1-5.

OPERATING

FREQUENCIES

March,

1976

The

operating

speeds

of

the

teleprinter

may

be

changed

through

the

Speed

Control

Switch,

which

selects

any

of

the

three

crystals

installed

in

the

unit.

Power

to

the

unit

MUST

BE

TURNED

OFF

when

changing

from

one

speed

to

another.

See

Chapter

3

for

instructions.

CAUTION:

Each

crystal

corresponds

to

a

different

‘Baud

rate’

(a

quantity

directly

related

to

printing

speed).

Alternative

speeds

may

be

obtained

by

changing

the

crystals

(located

on

the

unit’s

Driver

Board).

Consult

the

following

chart

to

select

the

proper

crystal

for

the

desired

operating

speed

of

the

unit.

CHARACTERS

PER

SEQQND

Part

Frequency

Baud

Baudut

Unit

Cude

ASCII

Unit

Code

TTYS

Unit

Number

{KHz}

Rate

7.42 7.5

10

11

Code

3.5

2354-01

25.6

50.0

6.74

6.667

5.0

4.545

5.882

2354-02

33.4 75.0

10.103

10.0

7.5

6.313

3.324

2354-03

56.32

110.0

14.325

14.667

11.0

10.0

12.941

2354-04

57.6

112.5

15.162

15.0

11.25

10.227

13.235

2354-05

23.296

45.5

6.132

6.067

4.55

4.136

5.353

2354-06

84.48

165.0

22.237

22.0

16.5

15.0

19.412

2354-07

102.4

200.0

26.954

26.667

20.0

13.132

23.529

2354-03

51.2

100.0

13.477

13.333

10.0

9.091

11.765

2354-09

37.547

73.33

9.883

9.777

7.333

6.666

8.627

2354-10

28.8

56.25

7.581

7.5

5.625

5.114

6.618

2354-11

28.493

55.65

7.5

7.42

5.656

5.059

6.547

2354-12

37

.99

74.2

10.0

9.893

7.42

6.745

8.729

2354-13

153.6

300.0

40.431

40.0

30.0

27.273

35.294

2354-14

26.9

52.539

7.081

7.005

5.254

4.776

6.131

2354-16

115.2

225.0

30.32

30.0

22.5

20.45

26.471

2354-17

76

3

150.0

20.216

20.0

15.0

13.363

17.647

2354-18

40.96

80.0

10.781

10.667

8.0

7.272

9.412

2354-19

34.15

66.7

8.99

8.893

6.67

6.063

7.847

2354-20

29.133 56.9

7.668

7.587

5.69

5.173

6.694

2354-21

43

.52

85.0

11.456

11.333

8.5

7.727

10.0

2354-22

65.28

127.5

17.183

17.0

12.75

11.591

15.0

2354-23

111.7

218.18

29.404

29.09

21.81

19.83

25.66

2354-24

163.96

330.0

——

——

——

30.0

——

2354-25

130.56

255.0

—-—

——-

25.5

23.18

30.0

PHÜNTED

Ihl

THE

U.H.

AH-S‘u"

wann—n'a

1-6

1-6.

AVAILABLE

OPTIONS

a.

Sensor

Unit

for

Low

Paper

Alarm

This

feature

can

be

connected

by

the

cus-

tomer

to

activate

an

external

visual

or

audible

alarm

to

signify

that

the

paper

roll

supply

is

nearly

exhausted.

In

Selective

Calling

appli-

cations,

this

feature

can

be

used

to

alert

the

transmitting

station

that

the

teleprinter

is

not

ready

for

message

reception

because

of

its

inadequate

paper

supply.

On

units

equipped

for

EIA

interface,

the

Sensor

Unit

performs

a

similar

function.

PAPERWINDER

ASSEMBLY

PE-

BEST-M.

——

"

ll;

Figure

1-6

Teleprinter

With

Accessories

March,

1976

Figure

1-5

Sensor

Unit

for

Low

Paper

Alarm

b

.

Selective

Calling

This

feature

is

integral

to

the

7080

series

of

Logic

Boards,

and

permits

individual

station

selection

on

a

common

communications

loop.

The

Selective

Calling

Network

also

con-

tains

answerback

provisions.

c.

Paperwinder

This

device

(Figure

1-6),

mounted

on

the

rear

of

the

teleprinter,

retains

all

received

messages

on

a

contin-

uousroH.

d.

Pedestal

This

sturdily-constructed

pedestal

(Figure

1-6)

supports

the

teleprinter

at

a

convenient

reading

or

working

height

of

either

28

or

36

inches

(71

or

91

cm).

AH-SV

123/124-758

1-7

PRINTED

IN

THE

UJ'E.

'~_._._.___.__...._—-‘_r--—-.._

a..—

-.-...—-—

—.—-—.._..__...—.—-———.-.-.—..—.—.—__—_—

March,

1976

1-7.

CHARACTERISTICS

AND

SPECIFICATIONS

a.

Printing

Characteristics

Printing

Method

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

5

x

7

dot

matrix

(character

by

character)

Horizontal

Spacing

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

10

characters

per

inch

Vertical

Spacing

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

4.4

lines

per

inch

(single-line

feed)

Printing

Rate

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

three

speeds

up

to

30

cps,

determined

by

installed

crystals,

selected

through

Speed

Control

Switch

Available

Codes

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

CCITT

No.

2—5-Leve1;

CCITT

No.

5—8-Level

b.

Paper

Specifications

Standard

Teleprinter

Paper

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

for

ribbon

teleprinters

Pressure—Sensetive

(Ink-Encapsulated)

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

for

non-ribbon

teleprinters

(up

to

3-ply

for

multiple-copy

use)

c.

General

Specifications

Duty

Cycle

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

continuous

or

intermittent

Input

Voltage

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

115

or

230

Volts

AC,

50-400

Hz

(single

phase)

Signal

Line

Input

(general)

..........

signal

termination

isolated

from

ground

and

other

circuitry,

unless

otherwise

specified.

Isolation:

2500

Volts

DC.

Standard

series

resistance:

approx.

70

ohms,

unless

otherwise

specified.

Other

inputs

available

to

conform

with

specific

cus-

tomer

requirements.

Signal

Line

Input

(DC)

.

.

.Neutral:

10-80

ma;

Polar:

20-60

ma,

or

EIA

standard

interface

RS-232-C

Signal

Line

Input

(Audio)

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

Narrow-band

Audio

Frequency

Shift

Keying

(FSK),

CCITT

standard

channel

spacing

available.

Also

compatible

with

Bell

System

or

equi-

valent

Datasets

103,

108, 109,

and

113.

Input

Impedance

(approx.)

...........

U.

S.:

70

ohms;

U.

K.:

4

K

ohms;

West

German:

240

ohms

DC

Distortion

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

Teleprinter

accepts

up

to

41%

marking

or

spacing

distortion

at

any

operating

speed.

-

Audio

Distortion

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

Teleprinter

accepts

up

to

25%

marking

or

spacing

distortion

at

any

operating

speed.

’

I

Power

consumption

(approx.)

..........

60

Watts

maximum

printing,

25

Watts

maximum

standby

Operating

Temperature

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

32°F

to

110°F

(0-43'C),

sea

level

to

10,000

feet

(3048

131)

Dimensions

andxMass

(without

paper

roll)

..........

AH-ll

(non-ribbon):

5”

x

15

1/2”

x

12

5/8",

23

Lbs.

(12.7

cm

x

39.4

cm

x

32.1

cm,

10.5

kg)

AH-ll-R

(with

ribbon):

5”

x

17

3/4”

x

12

5/8”,

25

Lbs.

(12.7

cm

x

45.1

cm

x

32.1

cm,

11.4

kg)

Mounting

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

desk-top

surface

or

pedestal

(28”

or

36”/71

cm

or

91

cm)

PRINTED

IN

THE

U.K.

AH-SV

123/124—753

1-8

SECTION

2

2-1.

GENERAL

This

section

provides

instructions

for

the

installation

of

your

Series

AH

Teleprinter.

Be

certain

to

follow

all

‘Notes’

and

‘Cautions’

described

in

the

following

pages,

as

they

are

provided

for

your

safety

and

for

the

protection

of

your

machine.

When

reference

is

made

to

the

physical

location

of

various

component

parts,

the

tele-

printer

is

considered

to

be

viewed

from

the

front,

or

operator’s

position.

No

special

tools

are

required

to

correctly

install

the

unit.

2-2.

UNPACKING

AND

INSPECTION

When

removing

the

unit

from

its

shipping

carton,

all

instructions

and

cautions

which

might

appear

on

the

outside

must

be

observed.

The

unit

is

enclosed

in

a

protective,

dust-proof

plastic

bag

which

is

surrounded

by

a

shock-

absorbing

material.

This

packaging

material,

including

the

carton

itself,

should

be

saved

in

the

event

that

the

unit

must

be

returned

or

forwarded.

Upon

removal,

the

teleprinter

should

be

thoroughly

inspected

for

any

damage

which

might

have

occurred

while

the

unit

was

in

transit.

If

any

damage

is

evident,

it

should

be

immediately

reported

to

the

transportation

company.

NOTE

If

the

teleprinter

is

not

to

be

put

into

operation

until

some

future

time,

it

should

be

repackaged

in

the

original

packing

materials.

Storage

temperatures

may

range

from

32-150°F

(0-66°C),

at

any

altitude

up

to

10,000

feet

(3048

m)

above

mean

sea

level.

EQUIPMENT

INSTALLATION

AH-SV

123/124-758

March,

1976

PRINTED

IN

THE

LLI'C.

3

March,

1976

S

2-3.

INSTALLATION

LOCATION

Since

the

Series

All

Teleprinter

has

an

unusually

low

operating

noise

level,

it

may

be

installed

without

special

enclosures

or

sound-absorbing

material.

In

fact,

it

is

not

recommended

that

any

padding

or

cushioning

material

be

placed

under

the

unit,

as

this

could

constrict

air

flow

through

j

the

ventilation

ports

located

underneath

the

machine.

"

The

unit

may

be

placed

on

any

solid,

level

surface

of

sufficient

area

to

accommodate

the

physical

dimensions

of

the

unit,

but

should

not

be

situated

in

a

room

where

the

ambient

temperature

is

likely

to

exceed

113°F

(45°C)

while

the

machine

is

in

operation.

Likewise,

it

is

not

advisable

to

locate

the

unit

within

very

close

proximity

to

sources

of

direct

heat,

such

as

radiators

or

heating

ducts.

In

addition,

the

placement

of

the

teleprinter

should

be

convenient

to

an

AC

power

source

and

data

terminal

facility.

Data

reception

may

be

provided

via

appropriate

transmission

facilities,

in-

cluding

telegraph

lines,

telephone

networks

and

radio

channels.

I:

24.

CONTROLS

AND

INDICATORS

a.

Power

ON/OFF

Switch

Figure

2-2

shows

the

location

of

the

Power

ON/OFF

Switch

on

the

rear

bracket

assembly.

This

switch

will

be

either

of

two

varieties—a

red-handled

type,

mounted

so

that

the

upward

position

of

the

handle

denotes

the

‘ON’

position

and

the

downward

position

signifies

‘OFF’,

or

a

black-handled

type,

mounted

so

that

the

handle

must

be

moved

laterally

for

the

ON

and

OFF

positions

(as

shown

[

in

the

inset).

II

fills-1'".-

pi-Ifitn

13.:

':"FF

5*

l'

‚F1

.

ll:-

'

F

CIRCUIT

F’I'

HE‘S!

::'Fd:_:

hLAHH

LHHP

Figure

2-2

Power

ON/OFF

Switch

Figure

2-3

Location

of

Lamps

b.

Power-ON

Lamp

When

the

teleprinter

is

connected

to

an

AC

power

source

and

the

power

switch

has

been

turned

ON,

a

GREEN

lamp

adjacent

to

the

left-hand

side

of

the

Paper

Roll

Bracket

will

light

up

(see

Figure

2-3).

This

lamp

will

remain

lit

as

long

as

the

machine

is

ON’

c.

Circuit

Alarm

LMp

When

the

teleprinter

is

connected

to

one

of

the

various

possible

incoming-signal

lines

and

signal

;

is

present,

this

RED

lamp

next

to

the

Power-ON

lamp

(see

Figure

2-3)

will

blink

on

and

off

in

direct

correspondence

to

‘mark’

and

‘space’

conditions

on

the

line.

Thus,

under

normal

operating

con-

,

ditions,

this

lamp

DOES

NOT

remain

lit.

If,

however,

there

is

a

faulty

signal

line

connection

to

the

teleprinter,

or

if

for

some

other

reason

normal

line

signals

are

not

present,

the

RED

Circuit

Alarm

Lamp

will

remain

lit

continuously

until

the

proper

signal

returns.

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

2-2

d.

Speed

Control

Switch

This

switch

is

located

under

the

front

panel

in

the

lower

right-hand

corner

of

the

unit.

(On

some

older

models,

the

switch

is

inside

the

machine—below

the

ribbon

assembly,

on

the

right-hand

side.)

Moving

the

switch

handle

to

one

of

three

possible

positions

selects

a

crystal-controlled

operating

speed.

2-5.

POWER

INTER

FACE

CAUTION

Before

making

any

power

or

signal

line

connections,

place

the

Power

Switch

(shown

in

Figure

2-2)

in

the

OFF

position.

a.

General

Every

Series

AH

Teleprinter

is

equipped

with

a

power

cord

which

extends

from

the

Rear

Bracket

Assembly

adjacent

to

the

fuse

holder.

This

cord,

7

to

9

feet

long,

meets

the

electrical

specifications

of

the

geograph-

ical

area

in

which

the

machine

is

to

be

operated.

One

end

of

the

power

cord

is

normally

ter-

minated

in

a

three-prong

male

plug

for

con-

nection

to

an

external

AC

power

source

meeting

the

specifications

outlined

on

the

model

data

plate

affixed

to

the

right-hand

side

of

the

machine.

Units

designed

to

operate

from

a

230

VAC

power

source

are

not

usually

terminated

with

a

plug.

In

this

and

other

cases

in

which

no

plug

15

provided,

the

installer

must

provide

one

of

proper

configuration

for

connection

to

power

receptacles

in

the

user’s

area.

CONVENIENCE

OUTLET

AC

POWER

SOURCE

3-

PROM

G

MALE

PLUG-

Figure

2-4

3-Prong

Hookup

March,

1976

b.

Changing

Operating

Voltage

Your

machine

has

been

wired

to

operate

from

either

a

115

or

a

230

VAC

power

source,

50

to

400

Hz.

Check

the

Status

Card

attached

to

the

machine

to

ensure

that

the

machine

has

been

wired

to

meet

the

voltage

requirements

of

your

area.

If—for

whatever

reason—the

operating

voltage

of

the

unit

must

be

changed,

the

installer

must

gain

access

to

the

power

supply

transformer

within

the

cabinet.

To

do

this,

follow

the

instructions

outlined

in

the

later

entry

entitled

Internal

Access.

To

change

the

operating

voltage,

remove

the

transformer’s

protective

plastic

cover

by

loosen-

ing

its

two

retaining

screws

and

sliding

the

cover

while

lifting

upward.

Referring

to

Figure

2-5,

STMIID

250M“:

OHIITICH

NI!!!

II.

In

on

Inc-um

Lnn

'

II

-—-|

_„-———

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ILHI

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:flnr

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n."

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no"

LII-I3

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T

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u

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Dill-incl

JUIHII

Ifult

Figure

2-5

Dual

Transformer

Schematic

remove

the

existing

jumper

wire(s)

and

solder

new

jumper

wire(s)

to

the

appropriate

terminals,

as

shown

in

the

schematic.

NOTE

When

the

operating

voltage

is

changed,

the

fuse

(housed

in

fuse

holder

on

rear

bracket)

must

also

be

changed

to

conform

to

the

values

shown

in

Figure

2-5—-1

amp

for

115

VAC

and

0.5

amp

for

230

VAC

operation.

Once

the

jumper

wires

have

been

soldered

to

the

correct

terminals,

the

protective

cover

may

be

restored

and

the

cabinet

re-assembled.

When

it

is

certain

that

the

teleprinter

meets

the

electrical

specifications

of

the

area

in

which

it

is

to

be

used,

the

power

cord

may

be

con-

nected

to

the

appropriate

receptacle.

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

2-3

March,

1976

G.

a

2-6.

SIGNALINTERFACE

ä'ECHEm-‚LE

g

a.

Neutral/Polar/Audio

Lines

(2

wirc

cable)

A

Series

AH

Teleprinter

may

come

equipped

with

any

of

a

variety

of

connectors

attaching

the

signal

line

to

the

machine.

In

general,

the

signal

line

is

attached

either

as

a

‘hard-wired’

cable,

extending

from

the

rear

of

the

unit,

or

may

be

fitted

with

a

connector

which

mates

with

a

signal

line

receptacle

mounted

on

the

tele-

printer’s

rear

panel.

The

signal

line

cable

may

be

terminated—

hooked

up

to

a

data

source-fin

a

number

of

ways.

Figure

2-6

illustrates

the

most

common

forms

of

termination

for

units

designed

to

operate

with

DC

current

loops

or

audio

input

signals.

Before

making

any

signal

line

con—

nections,

check

the

Status

Card

attached

to

the

machine

for

complete

information

on

the

type

of

signal

your

machine

is

designed

to

accept.

SlGHfiL

CABLE

4

-

PRÜNG

MALE

TELEPHONE

CONNECTOR

*fir

CAUTION

If

a

teleprinter

equipped

for

audio

signal

use

is

connected

to

a

DC

source,

serious

damage

to

the

input

board

will

result.

No

damage

will

occur

if

the

re-

verse

connections

are

made;

however,

the

teleprinter

will

be

inoperative

after

AC

power

is

applied,

and

the

Circuit

Alarm

lamp

will

light

to

signify

an

open

circuit.

The

teleprinter

is

designed

to

operate

nor-

mally

from

any

DC

signal

line

current,

neutral

or

polar,

between

10

and

60

milliamperes.

However,

if

the

unit

is

to

be

operated

from

peripheral

equipment

have

a

higher

current

rating

than

60

milliamperes,

current

limiting

resistor(s)

of

proper

value

must

be

wired

in

series

with

the

DC

input

signal

line.

If

spec-

ified

at

the

time

of

ordering,

the

resistor(s)

will

be

factory-installed

on

the

input

printed

EWG

LUG

circuit

board.

Provisions

have

been

made

on

this

board

to

switch

different

resistors

in

series

with

the

loop

for

field

modification.

TPNNED

WlFiE

LEADS

Figure

25

Typical

Signal

Line

Terminations

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

2-4

March,

1976

When

the

teleprinter

is

interfaced

with

an

external

audio

modem,

the

current

setting

should

be

between

30

and

50

milliamperes

in

the

‘mark’

condition.

Refer

to

the

external

modem

instruction

manual

(provided

by

the

manufacturer

of

the

external

modem)

for

specific

adjustment

procedures.

PÜLflRJZING

KEY

Figure

2-7

Polarizing

Key

NOTE

When

initially

connecting

the

signal

line,

it

may

be

necessary

to

reverse

the

polarity

of

the

line

before

the

teleprinter

will

receive

pr0perly.

To

reverse

the

polarity

of

the

signal

line

on

units

which

utilize

the

connectorlreceptacle

method

of

attachment

to

the

teleprinter,

simply

remove

the

signal

line

connector

and

locate

the

polarizing

key

wedged

into

its

housing

(see

Figure

2-7).

Pry

this

key

out

of

the

housing

and

re-install

it

on

the

other

side

of

the

connector.

Re-insert

the

connector

into

the

signal-line

receptacle.

On

machines

with

a

‘hard-wired’

signal

line

cable,

it

will

be

necessary

to

reverse

the

leads

at

the

terminal

connecting

point

in

order

to

change

polarity.

If

printer

is

equipped

with

9-wire

cable,

refer

also

to

section

2-6c.

b.

RS-232

(EIA)

Interface

(5

wire

cable

only)

The

signal-line

cable

used

with

this

EIA-type

interface

is

generally

‘hard-wired’

to

the

teleprinter

and

terminated

with

a

25-pin

connector

(see

Figure

2-8).

Any

Series

AH

Tele-

printer

which

is

designed

especially

for

this

type

of

interface

uses

the

following

pins

and

signals

on

this

connector:

Pin

1

Protective

Ground

Pin

2

Transmitted

Data

(always

-12

VDC)

Pin

3

Received

Data

Pin

7

Signal

Ground

Pin

20

Data

Terminal

Ready

(+12

VDC)

or

Low

Paper

Sensor

NOTE

After

the

signal

line

has

been

connected,

be

certain

that

the

teleprin-

Switch

has

been

set

for

the

proper

baud

rate.

The

Status

Card

on

the

machine

will

tell

you

the

three

baud

rates

at

which

your

particular

machine

can

operate.

___

———.—.-.—.‚_

[—

ter’s

Speed

Control

[—

N

_4

i

I

L

Figure

2-8

25-Pin

EIA

Connector

HIM

l—

_

‘1

mafia

srmflp'

1

F“

|

F-EcaTECTwE.

am:

.4]

f

I

l

GE”

fflm

__

I

wignsfirrrtm

BETA

iii—nan...—

E

--

I

LIL

II

t.:h‘.’.

‚I2?

3

__

l

Etc-‚zwar:

rar-„Tau

OEM

1‘

I

SEE

H

LEE.

1:

F

l

ENC-HAIL

(am:

A.

rm5

OPTICAL.

t

|

um?

II

L51

„somron.

D

l

%TA.

TE

Hm“.

EEAD?

M

+115:

|

in

2.2:.

Figure

2-9

EIA

Interface

Wiring

Diagram

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

c.

PolarorEIA

Interface

with

9-wire

cable.

Your

machine

may

come

equipped

with

a

9-wire

signal-line

cable,

designed

to

enable

either

polar

or

RS-232

(EIA)

Operation

to

be

employed,

merely

by

swapping

the

interface

card.

If

ordered

for

RS-232

(EIA)

operation,

the

machine

will

usually

be

terminated

with

a

25-pin

connector,

as

shown

in

figure

2-8,

and

the

connections

will

be

as

shown

in

figure

2-9

(no

account

should

be

taken

of

the

cable

colours

in

this

case

however,

which

are

as

shown

below).

1

;

Wire

Colour

Function

White

Input

Signal

Common

|

Brown

Input

Signal

'

Red

Data

Terminal

Ready

(EIA

only)

Blue

Transmit

Data

Out

(Polar

only)

Orange

+

80

volts

DC

Input

(Polar

transmit)

Yellow

-

80

volts

DC

Input

(Polar

transmit)

Green

Low

paper

contacts

(Polar

only)

Violet

Closed

when

paper

is

low

Black

Transmit

Data

Output

(EIA

only)

I

l

Figure

2-10

9-wire

signal-line

cable

connections

II

N.B.

The

polar

and

EIA

transmit

wires

will

not

normally

be

used.

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

March,

1976

2-7.

PROGRAMMING

OPTIONS

Under

normal

circumstances

the

teleprinter

is

ready

to

be

put

into

operation

just

as

it

arrives

from

the

factory.

If

specified

at

the

time

of

ordering,

the

Logic

Board

in

each

machine

has

been

pro-

grammed

to

provide

any

options

requested.

In

some

instances,

however,

it

may

be

necessary

for

the

installing

technician

to

change

the

printing

requirements

of

the

unit,

and

the

following

charts

provide

the

information

necessary

to

do

this.

The

various

printing

options

described

in

Section

1

of

this

manual,

as

well

as

the

Selective

Calling

option,

are

controlled

through

the

8-position

dual-inline

(‘dip’)

switch

array

located

on

the

Logic

Board.

In

order

to

gain

access

to

the

Logic

Board,

it

will

be

necessary

to

follow

the

disassembly

procedure

outlined

later

in

this

section

under

Internal

Access.

a.

7981

Series

5-Level

Logic

Board

Switch

ON/OFF

Effect

1,2,3,4

—

no

effect

5

OFF

3,

5

Character

Selective

Calling

(separated

by

space

characters)

ON

2

Character

83B3

6

OFF

Normal

ON

Bold

Face

Heading

(only

if

switch

5

is

OFF)

7

OFF

Selective

Calling

Enabled

ON

Selective

Calling

Disabled

8

OFF

72-Character

Line

ON

40-Character

Line

b.

7085,

7086,

7087,

7986

Series

5-

l8-Level

Logic

Board

Switch

ON/OFF

Effect

1

OFF

Normal

ON

Auto

Message

is

printed

when

Power

Switch

is

turned

ON.

2

OFF

Normal

ON

Last

Character

Visibility

ON

7,

8

7

OFF,

8

OFF

50-Character

Line

7

OFF,

8

ON

69-Character

Line

7

ON,

8

OFF

74-Character

Line

7

ON,

8

ON

80-Character

Line

PRINTED

IN

THE

LLH.

AH-SU

TEEHEJ

15H

2-7

_.—

.‘_._____.

_..-_.L

_..

S-LEVEL

ONL

Y:

March,

1976

5-LE

VEL

ONL

Y:

Switcf/ONIOFF

Effect

\Switch/ONIOV

Effect

3,

4

3

OFF,

4

OFF

Gil-Character

Mode

3

OFF,

4

ON

SIG-Character

Mode

3

ON,

4

OFF

128-Charaeter

Mode

5,

6 5

OFF,

6

OFF

Normal

3

ON,

4

ON

128-Charaeter

Mode

[Special]

4

OFF

Bell

on

'J’

{CCITT

No.

2}

5

OFF,

6

ON

New

Line

on

Carriage.

Return

5

OFF

Normal

5

ON,

6

OFF

New

Line

on

Line

Feed

5

ON,

6

ON

New

Line

on

Line

Feed

3

OFF

Normal

ON

Full

Monitor

Mode

ON

Bell

on

‘S‘

(U.

5.}

ON

New

Line

on

Line

Feed

6

OFF

Normal

ON

New

Line

on

Carriage

Return

The

jumper

wires

on

these

boards

are

also

significant.

If

JU-2

is

inserted,

the

teleprinter

will

op-

erate

on

Baudot

Code;

if

not,

it

will

Operate

on

ASCII.

JU-3

is

inserted

only

if

the

Five-Bell

Alarm

Option

has

been

specified.

JU-4,

even

on

models

in

which

it

may

be

inserted,

has

no

effect.

2-8.

INTERNAL

ACCESS

a.

Teleprinter

Cover

Removal/Replacement

To

remove

the

teleprinter

cover,

proceed

as

follows:

(1)

Cut

the

paper

and

remove

any

excess

paper

which

may

be

threaded

around

the

platen.

(2)

Pull

the

platen

knob

off

the

platen

shaft.

(3)

Loosen

the

screw

on

the

rear

of

the

cover

until

it

clears

the

retaining

bracket

slot

by

approximately

1/4

inch

(5/8

cm).

This

single

screw

holds

the

teleprinter

cover

to

the

printer

base.

(4)

Slide

the

cover

slightly

toward

the

front

of

the

machine

to

permit

the

cover

mounting

lip

to

disengage

from

its

retainer

at

the

front

of

the

printer

base.

WARNING!

VOLTAGES

DANGEROUS

T0

LIFE

ARE

PRESENT

IN

THIS

EQUIPMENT!

Disconnect

primary

AC

input

power

prior

to

attempting

assembly

removal

and

replacement.

(5)

Slowly

and

carefully

lift

upward

and

to

the

left,

removing

the

teleprinter

cover.

NOTE

Steps

(1)

through

(5)

are

to

be

reversed

for

re-attachment

of

the

teleprinter

cover.

CAUTION

To

avoid

damaging

the

platen

shaft

when

removing

the

cover,

carefully

move

the

teleprinter

cover

to

the

left

so

as

to

clear

the

platen

shaft.

b.

Access

to

Printed

Circuit

Board

Assemblies

To

obtain

access

to

the

electronic

printed

circuit

board

assemblies

of

the

unit,

proceed

as

follows:

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

2-8

(1)

Remove

the

teleprinter

cover

as

directed

in

the

preceding

paragraph.

CAUTION

Observe

the

orientation

of

the

four

connector

boards

to

the

right

of

the

typing

unit,

and

tag

the

boards

for

re-

assembly.

They

must

be

reinstalled

in

the

proper

direction

when

the

unit

is

reassembled,

or

serious

damage

to

the

teleprinter

may

result.

(2)

Disconnect

the

four

connector

boards

at

the

right

side

of

the

typing

unit

by

pulling

upward

on

each

of

them.

(3)

Remove

the

five

power

supply

cover

(4)

(5)

March,

1976

mounting

screws

located

on

top

of

the

unit

in

the

paper

roll

area.

Remove

the

printer

base

mounting

screws,

which

secure

the

printer

base

to

the

electronics

base.

Slowly

and

carefully

lift

up

on

the

integrated

assembly

comprised

of:

typ-

ing

unit,

power

supply

cover,

and

printer

base.

This

will

expose

the

electronics

base

and

its

circuit

board

assemblies.

NOTE

Steps

(1)

through

(5)

are

to

be

reversed

for

reassembly

of

the

teleprinter

cabinet.

2-9.

14250,

14252

and

14281

High-Level

Interface

Boards.

To

alter

the

mid-point

switching

level

for

the

desired

signal

line

current,

a

trim-pot

on

the

PC

board

must

be

adjusted.

Proceed

as

follows:

Remove

the

Power

Supply

Cover.

Using

a

local

battery

source

capable

of

pro-

viding

a

current

level

equal

to

that

of

the

loop

in

which

the

terminal

will

operate,

connect

a

milliammeter

and

suitable

resist-

or

in

series

with

the

terminal

on

a

local

The

teleprinter

must

be

connected

to

the

local

battery

in

a

direction

so

that

the

red

LED

is

out

when

AC

power

is

ap-

Adjust

the

variable

resistor

until

the

milli-

ammeter

reads

one-half

the

actual

loop

current.

(ie,

30ma

for

a

60ma

loop,

20ma

for

a

40ma

loop,

10ma

for

a

20ma

loop.)

Adjust

potentiometer

R35

on

the

14250

and

14252

boards,

R28

on

the

14281

board,

until

the

red

LED

just

turns

on.

This

completes

the

adjustment.

1.

2.

loop.

NOTE:

plied.

3.

4.

5.

Reassemble

the

cabinet.

AH-SV

123/124-7558

2'9

PRINTED

IN

THE

U.K.

March,

1976

SECTION

3

OPERATING

INSTRUCTIONS

3-1.

GENERAL

This

section

of

the

manual

deals

with

tasks

which

are

usually

performed

by

the

operator.

The

operator

frequently

installs

new

paper

and

ribbon,

and

can

prolong

the

operational

reliability

of

the

unit

by

performing

these

tasks

consistently

and

correctly.

It

is

important

that

the

operator

learn

the

proper

procedures

for

these

and

other

tasks.

Once

the

teleprinter

has

been

properly

installed

and

connected

to

appropriate

signal

and

power

sources

(per

Section

2),

it

is

basically

ready

for

operation.

If,

however,

the

teleprinter

behaves

ab-

normally

while

any

of

the

tasks

in

this

section

is

being

performed,

it

is

recommended

that

you

notify

an

authorized

service

technician

as

soon

as

possible.

3-2.

PAPER

INSTALLATION

a.

Types

of

Paper

A

teleprinter

with

a

ribbon

mechanism

uses

any

standard

teleprinter

paper,

8

1/2”

(216

mm)

wide,

with

a

roll

diameter

of

5”

(127

mm)

or

less

and

an

inner

core

(spindle)

diamater

of

1”

(25.4

mm).

The

machine

will

operate

with

up

to

three-ply

paper.

A

teleprinter

not

equipped

with

a

ribbon

mechanism

uses

pressure-sensetive,

ink-encapsulated

paper.

This

paper

is

available

in

rolls

with

the

same

width

and

outer

diameter

as

standard

paper,

but

with

an

inner

core

(spindle)

diameter

of

7/16”

(11.1

mm).

A

Series

AH

Teleprinter

equipped

with

a

ribbon

mechanism

can

use

pressure-sensetive

paper,

if

the

paper

roll

mounting

bracket

is

altered

to

accommodate

the

smaller

spindle

diameter

(see

Section

14).

b.

Paper

Loading

CAUTION

Before

attempting

to

load

paper

into

the

machine,

turn

the

Power

ON/OFF

Switch

to

the

OFF

position.

If

your

machine

is

equipped

with

a

paperwinder,

its

Power

Switch

must

also

be

placed

in

the

OFF

position.

The

correct

loading

of

paper

into

the

machine

is

the

single

most

important

task

which

must

be

performed

by

the

operator.

Use

Figure

3-1

to

identify

parts

of

the

machine

referred

to

in

the

fol-

lowing

outline.

Figure

3-2

shows

a

side

view

of

the

correctly-threading

paper

path

through

the

ma-

chine.

F’HIHTED

IN

THE

UJ‘L

man:

IESHEd-F‘EB

3-1

LL.—

(1)

Remove

the

gum

label

or

adhesive

securing

the

starting

edge

of

the

paper

roll.

(2)

Unroll

a

sufficient

amount

of

paper

spoiled

by

the

adhesive

and

cut

it

off

with

a

pair

of

scissors.

(A

square

cut

makes

the

initial

insertion

of

paper

easier.)

(3)

Pull

outward

on

the

paper

roll

knob

and

insert

the

paper

roll

onto

the

paper

roll

bracket

assembly

so

that

the

paper

feeds

from

the

underside

of

the

roll.

Release

the

paper

roll

knob,

allowing

the

bushing

on

the

knob

to

settle

into

the

paper

roll

core.

(4)

Raise

the

hinged

lid

of

the

front

cover

and

pull

forward

the

bail

wire

tab,

located

on

the

left

side

of

the

bail

wire,

to

move

the

bail

wire

away

from

the

platen.

(5)

Pass

the

starting

edge

of

the

paper

over

the

hinged

plate

assembly

and

insert

it

into

the

opening

between

the

separator

bracket

and

the

upper

hex

tie

rod.

(Insert

the

paper

as

far

as

it

will

go

without

wrinkling.)

(6)

Rotate

the

platen

knob

toward

the

rear

of

the

unit

to

advance

the

paper

around

the

platen

and

over

the

sep-

arator

bracket.

If

the

paper

is

slightly

off-center,

depress

the

pressure

roll

release

lever

and

center

the

paper

man-

ually.

(7)

Return

the

bail

wire

to

its

original

position

and

close

the

hinged

lid.

If

a

paperwinder

assembly

is

not

being

used,

the

paper

threading

procedure

is

complete.

The

Power

ON/OFF

Switch

may

be

returned

to

the

ON

position.

NOTE

For

your

convenience,

the

paper

is

marked

with

red

warning

stripes

to

indi-

cate

the

end

of

the

roll.

When

they

ap-

pear,

the

paper

should

be

changed

at

the

next

convenient

interval.

March,

1976

IAFEF

IÜLL

iHflI

II!IlIHLL

llICIlT

IHR.

IFDIIIrrIH

.

r-llElluil

'ULL

HELEIJI

lll

K‘

___H

.

In.

In“

\

ILITIH

Figure

3-1

Paper

Handling

Components

Figure

3-2

Paper

Threading

Path

PAPERWINDER

HEEL

man.

BAIL

HELEHE

nmvr

”'5”

“'3”

arr

{HIDDEN}

VIEWING

HINDU!!!

PAPE].

*

I

ä

-

SVUFTCH

‘

Ia“

_

(HIDDEN)

_

.

uh/

PAPERWINDER

CONTROL

SDD'NG

SWIT

H

.

C

ASSEMBLY

fir

/

HELPER

PRINTED

IH

THE

UJ'E.

AH-SV

123/124-7238

‘I-IF

__

___..____.._--

If

a

paperwinder

assembly

is

being

used,

leave

the

power

switches

in

the

OFF

positions

and

complete

the

threading

procedure

des-

cribed

below.

(8)

Make

sure

that

the

edges

of

the

paper

move

freely

between

the

inside

faces

of

the

paperwinder

discs.

(9)

Turn

the

platen

knob

to

advance

the

paper

approximately

two

feet.

(10)

Pass

the

starting

edge

of

the

paper

over

the

paperwinder

bail

and

insert

it

between

any

two

rods

on

the

takeup

reel,

as

shown

in

Figure

3-4.

(11)

Turn

the

Paperwinder

Power

ON/OFF

Switch

to

the

ON

position.

(The

paper-

winder

reel

will

begin

to

rotate,

taking

up

any

slack

in

the

paper.)

This

completes

the

paper

threading

pro-

cedure.

The

teleprinter’s

power

switch

may

now

be

turned

to

the

ON

position

to

begin

operation.

0.

Removal

of

Paper

from

Paperwinder

(1)

Turn

the

teleprinter

and

paperwinder

power

switches

to

their

OFF

positions.

(2)

Support

the

underside

of

the

paper

wrapped

around

the

paperwinder

takeup

reel

with

one

hand

and

pull

the

reel

release

knob

with

the

other

hand.

(3)

(4)

(5)

(6)

March,

1976

Figure

3-4

Paper

Entering

Paperwinder

While

still

holding

the

reel

release

knob,

move

the

paperwinder

takeup

reel

towards

the

reel

release

knob

to

free

the

motor

drive

shaft

from

the

left

reel

hub.

When

the

left

reel

hub

has

cleared

the

motor

drive

shaft,

remove

the

paper-

winder

takeup

reel

from

the

paperwinder

mounting

bracket

and

release

the

knob.

Position

the

takeup

reel

with

one

disc

on

a

flat

surface

and

pull

upward

on

the

top

reel

disc

until

the

rods

separate

from

the

discs

and

the

roll

of

paper

can

be

re-

moved.

Reassemble

the

takeup

reel

by

inserting

the

tapered

ends

of

each

pair

of

rods

into

their

respective

holes

on

the

op-

posite

reel

disc.

AH-SV

123/124—758

PRINTED

IN

THE

U.K.

March,

1976

3-3.

R

I

BBON

INSTAL

LATION

CAUTION

Place

the

teleprinter’s

Power

ON/OFF

Switch

in

the

OFF

position

to

keep

the

machine

from

printing

while

the

ribbon

is

being

installed.

A

Series

AH

Teleprinter

equipped

with

a

ribbon

mechanism

is

designed

to

use

a

standard

NYLON

teleprinter

ribbon

with

spools.

It

is

imperative

that

a

NYLON

ribbon

be

used

to

prevent

the

build-up

of

cotton

fibre

in

the

carriage

assembly.

The

pr0per

ribbon

may

be

ordered

from

Extel

Corporation

(see

Section

14).

The

ribbon

should

be

discarded

when

the

printed

characters

become

illegible

or

too

light

to

read.

After

the

ribbon

has

begun

to

wear

out,

the

operator

can

get

more

use

out

of

it

by

switching

the

spool

positions,

thus

inverting

the

ribbon.

To

reach

the

ribbon,

raise

the

hinged

lid

of

the

teleprinter

cover

and

note

the

diagram

(reproduced

here

as

Figure

3-6)

affixed

to

the

inside

of

the

cover.

One

should

refer

to

this

diagram

while

installing

the

ribbon,

to

ensure

that

the

proper

threading

path

is

followed.

(1)

Gently

pull

the

bail

wire

tab

to

move

I;

c:

the

bail

wire

away

from

the

platen.

__

_

“W.

II

EYELET

MUST

BE

BETWEEN

I]

I

(2)

If

the

ribbon

spools

are

to

be

discarded,

SENSOR

WIRE

a

RIBBON

or

if

the

ribbon

is

to

be

inverted,

do

the

.

SPÜOLSI

EITHER

SIDE)

following

before

proceeding

to

Step

3:

Ü

0

Carefully

clear

the

ribbon

from

the

Ü

left-

and

right-hand

sensing

wires.

0

Depress

one

of

the

brake

arms

inward-

ly

(toward

the

rear

of

the

machine)

and

lift

the

ribbon

free

of

its

guide

spool

l

INSERT

RIBBON

BETWEEN

+

(where

the

ribbon

rests

when

the

brake

SENSOR

WIRES

BRfiKE

arm

is

in

place).

0

Repeat

this

pro-

cedure

for

the

other

brake

arm.

0

Un-

thread

the

ribbon

from

the

remaining

‚

_

guides.

0

Lift

the

ribbon

spools

off

FIgure

3-6

Ribbon

Threading

Diagram

of

their

spindles.

l

BHhKE

hFIM

hFIM

CAUTION

Extreme

caution

should

be

used

when

lifting

the

ribbon

between

the

carriage

and

the

platen.

DO

NOT

attempt

to

pull

out

the

carriage

assembly

or

serious

damage

may

result.

(3)

If

your

replacement

ribbon

has

a

new

takeup

spool

preconnected

to

it,

proceed

to

Step

4.

If

the

spools

are

not

pre-

connected

to

the

ribbon,

do

the

fol-

lowing:

.

Engage

the

hook

at

the

end

of

the

ribbon

over

the

protruding

arrow

in

the

hub

of

the

empty

spool.

If

no

hook

is

available,

pierce

the

end

of

the

ribbon

over

the

point

of

the

arrow

(see

Figure

3-7).

0

Wind

the

ribbon

onto

the

spool

in

the

direction

of

the

arrow

(as

if

the

spool

is

being

turned

in

that

direction)

until

the

re-

versing

eyelet

has

been

wrapped

around

the

spool.

PRINTED

IH

THE

LLH.

AH-SV

123/124-758

(4)

Ensuring

that

the

reversing

eyelet

is

wrapped

around

the

takeup

spool,

place

that

spool

on

one

of

the

spindles

and

make

sure

that

the

guide

pin

is

engaged

under

the

spool.

Unwind

approximately

18

inches

(45

cm)

of

ribbon

from

the

full

spool

and

then

place

that

spool

on

the

other

spindle,

engaging

it

on

its

guide

pin.

Be

sure

that

the

orientation

of

the

spools

and

ribbon

is

as

shown

in

Figure

3-6.

NOTE

(6)

(7)

Starting

from

the

full

spool,

thread

the

ribbon

through

the

sensing

wire

and

then

depress

and

hold

the

brake

arm

inward

(towards

the

rear

of

the

machine)

while

guiding

the

ribbon

around

the

guide

spool.

Release

the

brake

arm.

Guide

the

ribbon

around

the

platen

guide

and

then

adjacent

to

the

platen.

At

the

carriage,

carefully

guide

the

ribbon

between

the

carriage

and

platen.

Extreme

caution

should

be

used

when

placing

the

ribbon

between

the

carriage

and

out

the

carriage

assembly

or

serious

damage

may

result.

CAUTION

the

platen.

Do

not

attempt

to

pull

(8)

(9)

Continue

threading

the

ribbon

through

the

remaining

guides

on

the

other

side,

i.

e.,

around

platen

guide

and

guide

spool,

through

the

sensing

wire.

Rotate

the

takeup

spool

until

the

slack

in

the

ribbon

is

tightened

out,

and

again

check

to

be

certain

that

the

reversing

eyelet

is

between

the

sensing

wire

and

the

takeup

spool.

(If

it

is

not

in

this

position,

the

ribbon

will

not

automat—

ically

reverse—and

damage

could

be

done

to

the

ribbon

mechanism.

)

March,

1976

(10)

Return

the

bail

wire

to

its

original

position,

close

the

hinged

lid,

and

place

the

Power

ON/OFF

Switch

in

the

ON

position.

3-4.

MESSAGE

REMOVAL

a.

Single-Copy

Paper

To

remove

a

transmitted

message

on

single-

copy

paper

from

the

teleprinter

which

is

not

equipped

with

a

paperwinder,

turn

the

platen

knob

to

advance

the

paper

until

the

last

printed

line

clears

the

top

surface

of

the

viewing

win-

dow.

Pull

the

paper

forward

and

to

the

right

or

left

against

the

viewing

window

to

tear

the

message

off.

b.

Multi-Copy

Paper

When

removing

multiple

copies

from

the

machine,

take

the

following

steps

to

eliminate

uneven,

ragged,

or

mutilated

message

material:

(1)

Place

the

thumb

of

your

left

hand

on

the

printer

cover

while

holding

the

papers

entering

the

teleprinter

(from

the

paper

roll)

with

the

fingers

of

the

same

hand.

(This

will

keep

paper

from

feeding

through

the

machine

during

the

tearing-off

process.)

(2)

While

pressure

is

being

applied

by

the

left

hand,

grasp

the

left

corner

of

the

paper

leaving

the

teleprinter

with

your

right

hand,

and

pull

smartly

forward

and

to

the

right

against

the

viewing

window

(see

Figure

3-8).

The

resulting

separation

will

be

straight

and

parallel

to

the

lines

of

copy.

PRINTED

IN

THE

U.K.

AH-SV

123/124-758

3-5

March,

1976

3-5.

OPERATING

CHARACTERISTICS

This

portion

of

the

section

outlines

the

general

a1.d

specialized

operating

characteristics

of

the

Series

AH

Teleprinter.

The

machine

is

totally

inaudible

when

not

printing

and

extremely

quiet

during

the

printing

process,

even

when

operating

at

speeds

up

to

50

characters

per

second—as

it

is

capable

of

doing.

This

makes

the

unit

ideal

as

a

desk-top

unit,

especially

in

an

office

where

low

noise

levels

are

desirable.

The

Series

AH

Teleprinter

incorporates

a

number

of

unique

features

which

are

described

in

some

detail

in

Section

1

of

this

manual.

Depending

on

its

programming,

your

machine

may

perform

any

combination

of

the

features

outlined

in

Paragraph

1-3.

If

your

machine

has

been

programmed

for

Page

Format,

you

will

notice

that

a

large

space

appears

between

every

39

lines

of

copy.

This

permits

the

tearing

(or

cutting)

of

the

paper

into

neat

11-inch

(28

cm)

pages.

Your

particular

machine

may

advance

the

paper

upward

every

time

printing

ceases.

If

so,

the

unit

has

been

programmed

for

Last

Character

Visibility

(LCV).

This

feature

allows

greater

visibility

of

the

last

line

printed.

CAUTION

DO

NOT

attempt

to

restrict

the

movement

of

the

carriage

assembly.

This

could

cause

the

carriage

assembly

to

be

forced

against

the

right-hand

side

of

the

platen,

possibly

causing

damage

to

the

carriage.

a.

Line

Feed

Switch

The

three-position

Line

Feed

Switch

is

located

on

the

lower

left-hand

side

of

the

front

of

the

unit.

It

generates

one

line

feed

when

positioned

to

the

LEFT,

one

and

one-half

line

feeds

when

in

the

CENTER

position,

and

two

line

feeds

when

placed

to

the

extreme

RIGHT.

From

time

to

time

the

operator

may

wish

to

use

this

switch

to

alter

the

spacing

between

lines

of

copy.

The

switch

is

hidden

by

the

front

plate,

but

can

be

operated

by

reaching

under

this

plate

(see

Figure

3-9).

\—

„r

2"!—

I

W

Line

Feed

Switch

21:22h

Figure

3-9

Line

Feed

Switch

Figure

3-10

Speed

Control

Switch

PRINTED

IN

THE

U.K.

AH-SV

123/124

758

b.

Speed

Control

Switch

The

operating

speed

of

the

teleprinter

may

be

changed

via

the

Speed

Control

Switch

(Figure

3-10),

which

selects

any

of

three

crystals

in-

stalled

in

the

machine.

This

switch

is

on

the

right-hand

side

of

the

front

of

the

unit

(except

in

cases

noted

in

Paragraph

2-4),

and

can

be

operated

like

the

Line

Feed

Switch.

CAUTION

Power

to

the

unit

must

be

turned

OFF

when

its

speed

is

being

changed.

c.

Special

Character

Fonts

The

printing

of

special

character

fonts—

bold

face,

expanded,

and

lower

case—is

de-

termined

at

the

transmitting

site.

The

ASCII

AH

Series

Teleprinter

is

a

receive-only

unit,

and

the

operator

cannot

alter

the

typography

of

received

messages.

The

teleprinter

executes

its

bold

face

and

expanded

characters

when

it

receives

an

‘es-

cape’

code

(a

control

character

which

is

ex-

pressed

as

‘ESC’

followed

by

a

numeral).

If

the

teleprinter

receives

‘ESC

3’

from

the

trans-

mitting

site,

it

will

print

the

subsequent

mes-

sages

in

bold

face.

‘ESC

4’

returns

the

printer

to

standard

type.

‘ESC

6’

initiates

expanded

characters,

while

‘ESC

5’

ends

them.

Lower

case

characters

are

included

in

the

ASCII

char-

acter

set

and

do

not

require

escape

codes

to

be

initiated

nor

to

be

cancelled.

d.

Half-Line

Feed/Reverse

Half-Line

Feed

For

a

Series

AH

ASCII

Teleprinter,

the

character

sequence

‘ESC

9’

causes

the

platen

to

advance

one-half

line

feed,

making

the

March,

1976

printing

of

subscripts

possible.

‘ESC

8’

causes

a

reverse

half-line

feed,

for

exponents,

super-

scripts,

and

footnoting.

3-6.

OPERATOR-LEVEL

MAINTENANCE

In

general,

your

Series

All

Teleprinter

will

provide

trouble-free

performance

for

long

periods

of

time

without

extensive

maintenance.

There

are,

however,

some

simple

maintenance

procedures

which

will

help

extend

the

trouble-

free

life

of

the

unit.

0

The

teleprinter

should

receive

periodic

preventive

maintenance

at

regular

intervals

by

a

qualified

service

technician.

0

All

torn

bits

of

paper

should

be

removed

from

inside

the

cover.

Excessive

lint

from

the

paper

may

be

removed

with

a

soft—

bristle

brush

in

slow,

light

brush

strokes

to

keep

the

lint

from

being

scattered

to

other

parts

of

the

machine.

0

Exterior

metal

surfaces

may

be

cleaned

with

a

mild

cleaning

detergent

(such

as

Fantastik)—which

should

be

wiped

off

immediately

with

a

paper

towel

or

lint-free

cloth.

0

A

mild

detergent

may

also

be

used

to

clean

the

viewing

window,

but

a

protec-

tive

cover

should

be

placed

over

the

in-

ternal

mechanism

to

prevent

the

cleaning

agent’s

spray

from

entering

it.

CAUTION

Only

qualified

service

personnel

should

attempt

to

clean

the

carriage

assembly.

PRINTED

IN

THE

U.K.

AH-SV

123/124-758