Digital Equipment VT420 User manual

First

Edition,

November

1989

The

information

this

document

subject to

change

without

notice

and

should

not

construed

commitment

Digital

Equipment

Corporation.

Digital

Equipment

Corporation

assumes

responsibility

for

any

errors

that

may

appear

this

document.

The

software

described

this

document

furnished

under

a license

and

may

used

copied only

accordance

with

the

terms

such

license.

No responsibility

assumed

for

the

use

reliability

software

equipment

that

not

supplied

Digital

Equipment

Corporation

its

affiliated companies.

Restricted

Rights:

Use,

duplication;

disclosure

the

U. S.

Government

subject

restrictions

set

forth

subparagraph

( c ) ( 1 ) (

)

the

Rights

Technical

Data

and

Computer

Software

clause

DFARS252.227-7013.

Digital

Equipment

Corporation

1989

All

Rights

Reserved.

Printed

Taiwan.

FCC

NOTICE:

The

equipment

described

this

manual

generates,

uses,

and

may

emit

radio

frequency energy.

The

equipment

has

been

type

tested

and

found

comply

with

the

limits

for a

Class

computing

device

pursuant

Subpart

Part

FCC

Rules,

which

are

designed

provide

reasonable

protection

against

such

radio

frequency

interference

when

operated

a commercial

environment.

Operation

this

equipment

residential

area

may

cause

interference,

which

case

the

user

his

own

expense

may

required

take

measures

correct

the

interference.

AT&T

trademark

American

Telephone

and

Telegraph

Company:

The

following

are

trademarks

Digital

Equipment

Corporation:

DEC

LA100, LA210 RSX

DEC-423

LJ250,

LJ251

DECmailer

LN01, LN03

Scholar

DECmate

LQP02, LQP03

SERVIcenter

DECnet

'MASSBUS

SSU

DEC

server

200 MicroPDP

ULTRIX

DECserver

300 MicroVAX

UNmUS

DECservice

PDP

VAX

DECUS

P/OB

VAXstation

DECwrlter

Professional VMS

DmOL

Q-bus

VT,

VT52, VT100

LA12,

~4,LA35

Q22-bus VT220, VT320, VT420

LA36, LAS8, LA50 Rainbow

~DmDDmD1M

LA75

Companion

Printer

RSTB

This

document

was

prepared

and

published

Educational

Services Development

and

Publishing,

Digital

Equipment

Corporation.

Contents

About This Guide

1 A Look at the Terminal

VT420 Components

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

. . . . . . . . . . . . . . . . . . . . . 1

TerIIlinal

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

Keyboard.

...

....

. . .

. . . . . . . . . .

. . .

. . . . . . . 2

Your

Computer

System

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

Features.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Set-Up.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Two

Sessions

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

. . . . 4

Windows................................

..........

. 4

Number

Lines on

the

Screen . . . . . . . . . . . . . . . . . . . . . . . . . 5

Page Memory

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

. . . 5

Copy

and

Paste

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

. . . . . . . . . .

. . 5

Status

Line

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

Keyboard Indicator

Line

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

Screen

Alignment.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Screen Background

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

Emulating

VT Series Text Terminals . . . . . . . . . . . . . . . . . . . . . 6

Character

Sets

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Programming

the

Tenninal

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

. . . . . . . . . . . 8

iii

iv Contents

Installing Your VT420 Video Terminal

2 Installation

Site

Considerations 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Installation

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0 • 0 0 0 • 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0

Cable Connections . 0 0 0 0 0 0

••

0 • 0 0 0 0

••••

0 • 0 0 0 0 0

0 0 0 0 0 0 0 0 0 18

Problem Solving 0 0 0 0 0 • 0 0 • 0 0 0 0 0 • 0 0 0 0

••

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

3 Getting Started

Setting

the

VT420 for One

Two Sessions 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Setting

for One Session (One Cable)

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Setting

for Two Sessions

(Two

Cables)

.000000000000000

Setting

Up for Two Sessions

with

SSU

Software (One Cable)

Selecting

the

Correct

Baud

Rate

000

0 0

••

0 0 • 0 0

0 0 0 0 0 0

00000

Selecting

the

Correct Terminal ID 0 0 0 0

••

0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Using· Your VT420 Video Terminal

4 The Keyboard and Indicators

LK401 Keyboard

0.00000000000000000.000000000000000000

Main Keypad 0 0 • 0 0 0 0 • 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Editing Keypad

00.000000.

0 0 0 0 0

••

0.00000000.

0 0 0 0 0 0

000

Nmneric Keypad 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0

Top-Row Function Keys 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Compose

Characters

0 0 0 0 0 0 0 0 0 0 0 0 0

••

0 0 0 0 • 0 0 0 0

••

0 0 0 0 0 0 0

Indicator Lights 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Audible Indicators 0 0 0 0 • 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 •

Keyclick 0 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o. 0 0 0 0 0

Bell

00.

0 0 • 0 0 0 0 0 0 0

000000000.000

••

0 0 0

•••••

0 0

•••

0 0

000

Keyboard Indicator Line . 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Status

Line

0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 • 0 0 0

Word Processing

Keyboard.

0 0 • 0

.0000000.

0 • 0 0

••••••••••

0 0 0 50

Contents v

5 Using

S~t-Up

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Independent

Setups

for

Two

Sessions

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

Entering

and

Leaving Set-Up

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

Set-Up

Directory.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Status

Line

and

Keyboard Indicator Line

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

Set-

Cursor

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Action Fields

....

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Set-

Directory Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Selecting Set-Up Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changing

and

Recalling Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 58

How to

Change

Settings.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

How to

Save

Your

Settings.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

How to Recall

Saved

Settings

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

Global Set-Up

Screen.

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

Two Sessions

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

. . . . . 60

Display Set-Up Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting a

Page

Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting

the

Number

of Lines/Screen . . . . . . . .

. . . . . . . . . .

Coupling

the

Cursor

the

Display . . . . . . . . . . . . . . . . . . . . . . 63

General

Set-Up

Screen.

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

Character

Sets.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Communications

Set-Up

Screen.

. . . . . . . . . . . . . . . . . . . . . . . . . . 71

Keyboard Set-Up

Screen

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

Ta.b

Set-Up

Screen.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

6 Typing Additional Characters

What

Characters

Can

I Type?

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

. . . . . . . . . . 79

How to Type a

Character

Using

the

Compose

Character

Key . . . .

Invalid Sequences

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

Canceling

Restarting

a Compose Sequence . . . . . . . . . . . . . .

Hexadecimal Compose Sequences

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

Contents

7 Using

Two

Sessions, Windows, and the Copy and Paste

Feature

What

Are Sessions? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

'I'w-o

Sessions

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

Opening Two Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

You

Use

Two Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

You

Use

One

Cable.

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

Restoring

Interrupted

SSU

Session.

. . . . . . . . . . . . . . . . . . . 93

SSU

Screen

and

Error

Messages . . . . . . . . . . . . . . . . . . . . . . . . 93

Which Session

Active?

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

Number

LinesiScreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

How to

Change

the

Number

LinesiScreen . . . . . . . . . . . . . . . 95

Windows.............................................

One Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Two

Windows.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

How to Select One or

Two

Windows . . . . . . . . . . . . . . . . . . . . . . 97

Keeping

the

Cursor

Visible

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

How to

Change

Window Sizes

......

. . . . . . . . . . . . . . . . . . . . 99

Panning

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

How to

Pan

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

100

Copying

and

Pasting

Text

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

102

Copying Text

into

the

Paste

Buffer

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

102

Pasting

Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Notes About Copying

and

Pasting

Text.

. . . . . . . . . . . . . . . . . . 104

8 Printers and Modems

Printers.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Connecting a

Printer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Selecting a

Mode.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Normal Mode:

Printing

Pages

Text . . . . . . . . . . . . . . . . . . . . 106

Auto

Mode:

Printing

Text from

the

Host

System.

. . . . . . 107

Printer

Controller Mode:

Letting

the

Host

Control

Printing

. . . 107

Local Controller Mode:

Setting

the

Printer.

. . . . . . . . . . . . 107

Assigning a

Printer

'I'w-o

Sessions

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

108

Printer

Set-Up

Screen.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Contents

vii

Modems.

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

. . . .

...

. . . . . .

111

Connecting to a Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

9 VT420 Programming Summary

Character

Encoding

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

113

3 Keyboard Codes

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

120

Emulating

Series

Terminals.

. . . . . . . . . . . . . . . . . . . . . . . . 122

Using

Character

Sets

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

122

Page

Memory

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

128

7 Visual

Character

and

Line

Attributes

. . . . . . . . . . . . . . . . . . . . . 129

Editing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Rectangular

Area

Operations.

. . . . . . . . . . . . . . . . . . . . . . . . . . 131

Cursor

Movement-

and

Panning.

. . . . . . . . . . . . . . . . . . . . . . . . 132

Keyboard,

Printing,

and

Display

Commands.

. . . . . . . . . . . . . . 133

12 VT420

Reports

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

136

Resetting

and

Testing

the

Terminal

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

142

Session

Management.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

A VT52 Mode Control

Codes.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

10 Solving Problems and Getting Service

Operating

Problems

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Power-Up Self-Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Error

Messages

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

145

Digital

Service.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

On-Site

Hardware

Services

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

147

Off-Site

Hardware

Services

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

148

Software

Service

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

148

How to

Get

Service

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

148

viii Contents

A Specifications

Site

Planning.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . 150

Operating

Environment

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Display.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

LK401 Keyboard

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

152

B Supplies and

Docu

mentation

Modems.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Cables

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

154

Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Ordering Information

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

C Communication

Cables

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

156

XONIXOFF Flow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Modem Connections

and

Disconnections

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

159

Break

Function

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

160

Connector Signals

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

160

Standards.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Glossary

Figures

1-1

VT420 Video

Terminal.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3-1

Set-Up Directory

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

. . . . . . 25

6-1

Hexadecimal Compose

Keys.

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

C-1

Cables.........................................

157

C-2

6-Pin Connector

Pinouts

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

160

Contents ix

Tables

4-1

Keyboard Indicator Line

Fields.

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

4-2

Status

Line Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1

Set-Up Directory

Features.

. . . . . . . . . . . . . . . . . . . . . . . . . 55

5-2

Global Set-Up

Features

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

5-3

Display Set-Up

Features

....

. . . . . . . . . . . . . . . . . . . . . . . 63

5-4

General Set-Up

Features.

. . . . . . . . . . . . . . . . . . . . . . . . . . 68

5-5

Communications Set-Up

Features

. . . . . . . . . . . . . . . . . . . . 71

5-6

Keyboard Set-Up

Features.

. . .

. . . . . . . . . . . . . . . . . . . . 74

5-7

Tab Set-Up

Features

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

6-1

Key

Sequences.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

8-1

Printer

Set-Up

Features

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

109

9-1

Alias

Primary

DA Responses From

the

VT420. . . . . . . . . . . 140

9-2

ANSI Modes for DECRQM, DECRPM, SM,

and

. . . . . . 140

9-3

DEC

Private

Modes for DECRQM, DECRPM, SM,

and

RM.

141

9-4

Control Functions

forDECRQSS

Requests

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

141

10-1

Common

Operating

Problems

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

145

10-2

Screen

Error

Messages.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

C-1

6-Pin DEC-423 Connector Interface Signals (Comm 1 or

Com.m

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

161

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