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