Digital Equipment VT103 LSI-11 User manual

LSl-11 VIDEO TERMINAL
USER'S GUIDE

EK-VT103-UG-001
VT103 LSl-11 VIDEO TERMINAL
USER1S GUIDE
digital equipment corporation • marlboro, massachusetts

Preliminary, June 1979
First Edition, September 1979
Second Printing, March 1980
Copyright © 1979 by Digital Equipment Corporation
The material in this manual is for informational purposes and
is subject
to change without notice.
Digital Equipment Corporation assumes no responsibility for
any errors which may appear in this manual.
Printed in U.S.A.
This document was set on DIGITAL's DECset-8000 com-
puterized typesetting system.
The following are trademarks of Digital Equipment Corporation.
Maynard, Massachusetts:
DIGITAL DECsystem-10
MASS BUS
DEC DECSYSTEM-20 OMNIBUS
PDP
DIBOL OS/8
DECUS EDUSYSTEM
RSTS
UNIBUS VAX RSX
VMS
IAS

PREFACE
CHAPTER 1
1.1
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.3.8
1.4
1.5
1.6
1.7
1.8
1.9
CHAPTER 2
2.,1
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2.2.8
2.2.9
2.2.10
2.2.11
2.2.12
2.2.13
2.3
2.4
2.4.1
2.4.2
2.4.2.1
2.4.2.2
2.4.2.3
2.4.3
CONTENTS
Page
OPERATOR INFORMATION
INTRODUCTION.................................................................................................................................1
CONTROLS AND INDICATORS......................................................................................................1
Monitor Controls.......................................................................................................................2
Keyboa
rd Controls....................................................................................................................3
Keyboard Indicators .................................................................................................................8
Audible Indicators (Tones).......................................................................................................9
SET-UP MODE....................................................................................................................................9
Determining
What a Set-Up Feature Does........................................................................10
How to Change a Set-Up Feature ....................................................................................... 10
Set-Up A ..................................................................................................................................12
Set-Up B (Operational Features) .........................................................................................13
Setting the Answerback Message.......................................................................................15
Saving the Set-Up Features .................................................................................................16
Recalling Set-Up Features....................................................................................................16
Resetting the Terminal ..........................................................................................................16
DEFINITION OF EACH SET-UP FEATURE..................................................................................17
POWER-UP SEQUENCE................................................................................................................. 21
OPERATOR EQUIPMENT CARE...................................................................................................22
SELF-TESTING THE VT103 ........................................................................................................... 22
WHAT TO DO IN THE EVENT OF A PROBLEM ......................................................................... 24
RELATED HARDWARE MANUALS AND TAPE SUPPLIES.................................................... 26
PROGRAMMER INFORMATION
INTRODUCTION .............................................................................................................................. 29
THE KEYBOARD.............................................................................................................................. 29
LED Indicators ........................................................................................................................ 30
SET-UP Key............................................................................................................................. 30
Keyboard 0 peration............................................................................................................... 31
Alphabetic Keys...................................................................................................................... 31
Nonalphabetic Keys ............................................................................................................... 31
Function Keys ......................................................................................................................... 32
NO SCROLL Key .................................................................................................................... 32
BREAK Key ............................................................................................................................. 33
CTRL (Control) Key ................................................................................................................ 33
Cursor Control Keys............................... :' ............................................................................... 34
Auto Repeating....................................................................................................................... 34
Special Graphic Characters .................................................................................................. 34
Auxiliary Keypad..................................................................................................................... 35
TERMINAL CONTROL COMMANDS ...........................................................................................37
CONTROL FUNCTIONS.................................................................................................................. 38
ANSI Mode Control Functions............................................................................................. 38
Modes....................................................................................................................................... 52
ANSI Specified Modes................................................................................................52
DIGITAL Private Modes..............................................................................................52
Other ANSI Mode States............................................................................................53
ANSI Control Function Summary........................................................................................ 53
iii

CONTENTS
2.4.4
2.5
2.5.1
2.5.2
2.5.3
CHAPTER 3
3.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.3
3.4
3.4.1
3.4.2
3.5
CHAPTER 4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.2
4.2.1
4.2.2
CHAPTER 5
5.1
5.2
5.3
5.4
5.5
5.5.1
5.5.2
5.6
CHAPTER 6
6.1
6.2
6.2.1
6.2.2
6.3
6.4
iv
VT52 Mode Control Functions.............................................................................................57
COMMUNICATION PROTOCOL................................................................................................... 60
Full Duplex -XON/XOFF Response.................................................................................... 60
Reset and Self-Test................................................................................................................ 62
NO SCROLL and CTRL S/CTRL 0 ....................................................................................... 62
VT103 LSl-11 SUPPORT HARDWARE
GENERAL.......................................................................................................................................... 65
SYSTEM ARCHITECTURE ............................................................................................................. 65
VT103 Backplane Assembly ................................................................................................ 65
Standard Terminal Port ......................................................................................................... 68
H7835 Power Supply............................................................................................................ 69
VT103 Fan Assembly ............................................................................................................ 70
TU58 DECtape II (OPTIONAL) ...................................................................................................... 70
THE LSl-11 BUS.............................................................................................................................. 70
Module Slot Assignments. Priority, and Configuration
Considerations........................................................................................................................
70
Configuring LSl-11 Backplane Systems ............................................................................ 70
TYPICAL LSl-11 CONFIGURATIONS.......................................................................................... 71
TU58 TAPE DRIVE
GENERAL INFORMATION............................................................................................................. 73
Tape Cartridge Storage and Care......................................................................................... 73
Write Protect Tab ................................................................................................................... 74
Tape Cartridge Installation and Removal ........................................................................... 75
Tape Drive Cleaning............................................................................................................... 76
TU58 COMMUNICATION SELECTION ....................................................................................... 76
Selecting Baud Rate ..............................................................................................................77
Selecting Transmission Standard........................................................................................
80
INSTALLATION, INTERFACE INFORMATION AND SPECIFICATIONS
UNPACKING..................................................................................................................................... 81
SITE CONSIDERATIONS ............................................................................................................... 81
INSTALLATION................................................................................................................................ 81
INTERFACE INFORMATION ......................................................................................................... 92
EXTERNAL VIDEO CONNECTION................................................................................................ 94
Composite Video Output (J9)............................................................................................... 94
Video Input (JS) ...................................................................................................................... 95
VT103 SPECIFICATIONS............................................................................................................... 96
OPTIONS
INTRODUCTION............................................................................................................................101
ADVANCED VIDEO OPTION -VT1XX-AB ..............................................................................101
Advanced Video Option Installation.................................................................................101
Advanced Video Option Checkout.................................................................................... 104
GRAPHICS CONNECTOR............................................................................................................ 104
COMMUNICATION CABLES ...................................................................................................... 105

APPENDIX A
APPENDIX B
APPENDIX C
APPENDIX D
Figure No.
1 -1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
2-1
3-1
3-2
3-3
3-4
3-5
3-6
4-1
4-2
4-3
4-4
4-5
4-6
5-1
5-2
5-3
5-4
5-5
5-6
5-7
5-8
6-1
6-2
A-1
A-2
CONTENTS
TU58 MESSAGE PACKETS ..................................................................................................... 107
GLOSSARY AND NOTATION .................................................................................................121
7-BIT ASCII CODE ..................................................................................................................... 125
SUMMARY OF VT103 CONTROL FUNCTIONS ............................................................... 127
FIGURES
Title
Page
VT103 LSl-11 Video Terminal.........................................................................................................2
VT103 LSl-11 Video Terminal (Rear View) ...................................................................................3
Standard Alphanumeric Keys...........................................................................................................4
Special Function Keys........................................................................................................................4
Set-Up Mode Keys .............................................................................................................................6
Keyboard lndicators...........................................................................................................................8
Set-Up A Mode Presentation.........................................................................................................13
Set-Up B Mode Presentation......................................................................................................... 14
Set-Up B Mode Summary .............................................................................................................. 14
VT103 Keyboard .............................................................................................................................. 29
Typical LSl-11 System Configuration........................................................................................... 66
VT103 Backplane Assembly..........................................................................................................67
VT103 With Top and Bottom Covers Removed ......................................................................... 68
VT103 Backplane Module Utilization........................................................................................... 71
Example 1: Configuring the LSl-11 Bus ...................................................................................... 72
Example 2: Configuring the LSl-11 Bus ...................................................................................... 72
VT103 With TU58DECtape11....................................................................................................... 74
Write Protect Tab ............................................................................................................................. 75
Loading a Cartridge.......................................................................................................................... 76
Tape Drive Cleaning.........................................................................................................................77
TU58 Controller Module Jumper Pin Locations ......................................................................... 79
TU58 Factory Wiring ....................................................................................................................... 80
VT103 Terminal Dimensions ......................................................................................................... 82
VT103 Rear View ............................................................................................................................. 83
VT103 Backplane............................................................................................................................. 84
Standard Terminal Port (STP) Installation ................................................................................... 86
Connecting a Second Serial Interface on the
STP Module Using the 10-Pin Connector.......................................................................... 88
Connecting a Second Serial Interface on the
STP Module Using the 40-Pin Connector.......................................................................... 89
Module Support Guide Installation............................................................................................... 91
Composite Video Output ................................................................................................................. 95
VT103 RearView ........................................................................................................................... 102
Adv aneed Video Option Installation........................................................................................... 103
Read Command Packet Exchange.............................................................................................. 114
Write Command Packet Exchange ............................................................................................. 114
v

CONTENTS
Table No.
1-1
1-2
1-3
1-4
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
4-1
5-1
5-2
6-1
6-2
A-1
A-2
A-3
A-4
A-5
A-6
A-7
A-8
C-1
D-1
D-2
vi
TABLES
Title
Page
Categories of Set-Up Features........................................:.............................................................. 10
Set-Up Feature Change Summary................................................................................................ 11
Nonfatal Displayed Error Codes..................................................................................................... 23
Problem Checklist ............................................................................................................................ 24
Set-Up Features and Terminal Modes.......................................................................................... 30
Alphabetic Key Codes ..................................................................................................................... 31
Nonalphabetic Key Codes............................................................................................................... 32
Function Key Codes......................................................................................................................... 32
Control Codes Generated................................................................................................................ 33
Cursor Control Key Codes............................................................................................................... 34
Special Graphic Characters............................................................................................................ 35
VT52 Mode Auxiliary Keypad Codes............................................................................................ 36
ANSI Mode Auxiliary Keypad Codes............................................................................................ 36
Control Characters Received.......................................................................................................... 37
Terminal Report Parameters .......................................................................................................... 46
DIGITAL Private Modes.................................................................................................................. 52
Other ANSI Modes ..........................................................................................................................53
VT52 Mode Control Functions....................................................................................................... 58
TU58 Controller Module Pin Assignments.................................................................................. 78
VT103 Backplane Signal and Power Pin Assignments
at Edge Connector.................................................................................................................. 85
EIA RS-232-C Connector Signals................................................................................................. 92
Graphics Connector Pin Assignments for
J2 on VT103 Backplane..................................................................................................... 104
Optional Communications Cables............................................................................................... 105
Command Message Packet Structure........................................................................................ 108
Instruction Set................................................................................................................................ 109
End Packet ......................................................................................................................................111
End Packet Success Codes and Definition................................................................................ 112
Data ·Packets................................................................................................................................... 115
Instruction Set................................................................................................................................ 117
NOP Instruction Message Packet............................................................................................... 117
NOP Instruction End Packet ........................................................................................................ 118
7-Bit ASCII Code/Character Chart ............................................................................................. 125
ANSI Mode Control Functions .................................................................................................... 127
VT52 Mode Control Functions....................................................................................................131

PREFACE
The VT103 LSl-11 Video Terminal is designed to be a basic building block in an
LSl-11 based microcomputer system. The VT103 combines the features of the
versatile DIGITAL VT100 alphanumeric terminal with a 4 X 4 LSl-11 backplane.
All the support hardware needed to build a complete LSl-11 microcomputer sys-
tem within the video terminal is available. The VT103 offers complete versatility so
you can configure the terminal using any of the available LSl-11 options. These
options are described in the Microcomputer Handbook Series manuals.
Microcomputer Processors
Memories and Peripherals
(EB-15115-78)
(EB-1511 4- 78)
The user can select a VT103 with a factory-installed TU 58 DECtape 11. This is a
dual minicartridge system for inexpensive mass storage of data and/or for program
loading. Each TU58 cartridge provides 256K bytes of storage for data or programs.
The VT103 is available in the following models.
Model
VT103-AA
VT103-BA
Description
Video terminal with keyboard
VT103-AA with TU 58 DECtape II
The VT 103 has three basic support blocks.
1. Video.Terminal: This consists of a video monitor. terminal controller.
detachable keyboard. and monitor cabinet.
2. LSl-11 support hardware: This consists of a VT103 backplane assem-
bly and an H7835 power supply.
3. TU58 DECtape II (optional): This is a factory-installed cartridge tape
option installed below the video monitor.
Chapter 1 provides operator information; Chapter 2 provides programmer informa-
tion on the terminal; Chapter 3 defines the LSl-11 support hardware; Chapter 4.
the TU 58 DECtape 11; Chapter 5 provides information on installation and specifica-
tions of the VT103. and Chapter 6 adds installation information for user-installable
options.
vii

CHAPTER 1
OPERATOR INFORMATION
1.1 INTRODUCTION
The VT103. shown in Figure 1-1. is a video terminal that features an internal LSl-
11 backplane whicti allows you to configure an LSl-11 microcomputer system
within your terminal. The TU58 DECtape II (which can be factory-installed in the
terminal cabinet) provides computer program loading or mass storage of data on
cassettes. You control the terminal. the computer. and the TU58 via a detachable
keyboard that operates much like a typewriter. This chapter defines the operation
of the keyboard.
Chapter 1 is divided into the following sections:
1. Introduction
2. Controls and indicators
3. Set-up mode (brief introduction to the terminal features)
4. Definitions (in detail) of each set-up feature
5. Power-up sequence (program loading)
6. Operator equipment care
7.
Self-testing the VT103 terminal
8. What to do in event of a problem
9. Related hardware manuals.
1.2 CONTROLS AND INDICATORS
The controls and indicators of the VT1 03 are categorized as follows:
Monitor Controls
Keyboard Controls
Keyboard Indicators
Audible Indicators.

2 OPERATOR INFORMATION
digit a I
Figure 1-1 VT103 LSl-11 Video Terminal
1.2.1 Monitor Controls
The VT103 is equipped. with two monitor controls (shown in Figure 1-2) - a
POWER ON/OFF switch and a POWER (voltage) SELECTOR switch. The POWER
ON/OFF
switch applies ac power to the terminal as follows.
Switch Position
Up
Down
AC Power
On
Off
The POWER SELECTOR switch is used to configure the terminal to the available
ac input voltage as follows.
Switch Position
115
230
Voltage Range
90 - 128 Vac rms
180- 256 Vac rms (typical U.S.)
(typical European)
MR-2890

OPERATOR INFORMATION 3
.,.((/
EIA
COMMUNICATIONS
CONNECTOR
Figure 1-2 VT103 LSl-11 Video Terminal (Rear View)
1.2.2 Keyboard Controls
I
MR-3519
The VT103 h.as a detachable keyboard equipped with two keypads. Its main key-
pad array is similar
to a standard office typewriter. An auxiliary numeric keypad
provides rapid data entry similar
to an adding machine or calculator. Within this
document, the keyboard keys are defined by function
as follows:
Standard alphanumeric keys
Special function keys
Set-up mode keys.
The keyboard has keys
that transmit codes and other keys which modify the codes
transmitted. CTRL and SHIFT modify the codes transmitted by the other keys.
Two
code-transmitting keys, when typed together, transmit codes immediately in the
order typed.
If three keys are pressed, the code for the third key is transmitted
when one
of the first two keys is lifted.
If the auto repeat feature is selected, all keys will repeat automatically, except
SET-UP, ESC, NO SCROLL, TAB, RETURN, and any key pressed with CTRL. Other
keys repeat automatically.when held down for more than one-half second.

4 OPERATOR INFORMATION
Standard Alphanumeric Keys -Figure 1-3 identifies the keys on the keyboard
that function as standard typewriter or calculator keys when the terminal is off-line
in local mode. When the terminal is on-line, operation of these keys is dependent
on the system software entered into the internal LSl-11 microcomputer (host
computer).
Figure 1-3 Standard Alphanumeric Keys
Special Function Keys -Figure 1-4 identifies the special function keys on the
keyboard; Each of these keys provides a unique operation to the terminal. The
function of these keys is dependent on the system software and may or may not
have meaning to your system.
When in keypad application mode, the shaded keys (shown in Figure 1-4) provide
additional special functions that may be used by an application program.
ON LINE LOCAL KBD LOCKED L1 L2 L3 L4
0 0 0 0 0 0 0
MR-3520
••••
1111
Figure 1-4 Special Function Keys
The general operation of the special function keys is provided in the following
paragraphs.
11~1?1 Key
When pressed in combination with the CTRL key, this key causes a bell code
(007 a) to be sent to the host computer.
MR-3521

, ................. ,
J~:~:~:AJ( Key
This key transmits a break signal.
1[111 Key
OPERATOR INFORMATION 5
This key enables the transmission of uppercase alphabetic characters only .. All
numeric and special symbol keys rem;:iin in lowercase.
When pressed in combination with another key, this key alters the code trans-
mitted by the other keys on the main keyboard. These new codes may have a
special meaning to the system.
This key causes the terminal to transmit a delete character code ( 177
8)
to the host
computer. The deleted character may or may not be erased from the screen, de-
pending on the system software.
This key operates the same as the RETURN key for rapid data entry on the numeric
keypad.
When in keypad application mode, a control function is generated that may have a
special meaning to the application program.
[~)$.pJ Key
This key transmits an escape code (033
8)
that normally has a special meaning to
your system. In many applications, it treats the next keys pressed as a command.
This key transmits a linefeed code (012a).
lllil~~I Key
When first pressed, this key stops transmission of data from the computer to the
terminal. When pressed again, transmission resumes. The AUTO XON/XOFF fea-
ture controls the function of this key. Recognition of this key is dependent on the
system software.
This key transmits either a carriage return code (CR. 015a) or a carriage return
(CR) and linefeed code (LF. 012a). This is a set-up selectable feature. (See Para-
graph 1.3.2.)

6 OPERATOR INFORMATION
fijijfl [ijf:J] IM~~M f f:f.jJ Keys
These keys are used to generate special function codes that may be used by the
system software.
I] HJ IJ IJ Keys
Each
of these keys causes the VT1 03 to transmit a code that may have a special
meaning to your system. In set-up mode the t and J.. keys increase or decrease
the brightness
of the display. The +- and -+ keys move the cursor left and right.
Set-up Mode Keys -Figure 1-5 identifies the keyboard keys that establish the
configuration
of the terminal in set-up mode. The shaded keys are used to position
the cursor
while in this mode. The paragraph that follows briefly describes the
function
of each key. Refer to Paragraph 1.3 for more details of the set-up pro-
cedure.
This key
is used to enter and exit the set-up mode. SET-UP A is displayed on the
screen
when this key is pressed.
[M [I Keys
BRIGHTNESS - Set-up A
In set-up A. these keys increase or decrease the brightness of the video characters:
t = increase; J.. = decrease.
I
Key
.
SET /CLEAR TAB - Set-up A
This key sets
or clears individual horizontal tabs. Position the cursor over the tab
stop position and press this key.
ON LINE LOCAL KBD LOCKED L1 L2
0 0 0 0 0
Figure 1-5 Set-Up Mode Keys
MR-3522

•
Key
.
CLEAR ALL TABS - Set-up A
This key clears all horizontal tabs.
I
Key
.
LINE/LOCAL - Set-up A or Set-up B
OPERATOR INFORMATION 7
This key switches the terminal to communicate with your system (on-line) or stops
the terminal from communicating with your system (local). Two indicators above
this key switch from ON LINE to LOCAL or from LOCAL to ON LINE.
I
Key
.
SET-UP A/B - Set-up A or Set-up B
This key
switches the terminal from set-up A to set-up B or from set-up B to set-up
A. The display indicates
which mode the terminal is in.
I
Key
.
TOGGLE - Set-up B
This key turns
the selected operational feature on or off. (Refer to Paragraph 1.3.4
for more details.)
I
.
Key
TRANSMIT SPEED - Set-up B
This key steps
the terminal through the transmit baud rate settings in ascending
order. The display indicates
the current transmit baud rate (T SPEED) setting. If the
standard
terminal port (STP) module is installed, setting the transmit speed estab-
lishes a common transmit and receive speed for a second serial line interface.
I Key
RECEIVE SPEED - Set-up B
This key steps
the terminal through the available receive baud rates of the termi-
nal. If the STP module is installed, this selection is disabled; the receive speed
follows the transmit speed selection.
I Key
80/132 COLUMNS - Set-up A
This key
switches the display line size from 80 to 132 characters per line or from
132 to 80 characters per line. The number of characters displayed in the rule at the
bottom of screen in set-up A mode is 80 or 132.

8 OPERATOR INFORMATION
I Key
.
RESET -Set-up A or Set-up B
This key starts the reset sequence. This has the same result as turning the terminal
power off and then on. Pressing this key exits set-up mode, performs a self-test.
and places the cursor in the upper-left corner of the screen when the test is com-
pleted successfully. (If this does not happen, refer to Paragraph 1.6 to try to isolate
the problem.)
1.2.3 Keyboard Indicators
Figure 1-6 shows the location of the keyboard indicators. The indicators are
defined in the paragraphs that follow.
0 N LINE Indicator
This indicator lights to show that the terminal is on-line and ready to transmit or
receive messages.
LOCAL Indicator
This indicator lights to show that the terminal is off-line and cannot communicate
with the host device. In local mode, the keyboard remains active and all characters
typed are placed on the screen.
NOTE
Power on is indicated by lighting either the ON
LINE or LOCAL indicator.
KEYBOARD LOCKED Indicator
This indicator lights when the keyboard has been turned off. The terminal is still
able to receive data from the host computer. You can clear this condition by enter-
_ing and exiting set-up mode.
BBBB
0000
0000
~000
I 0 IDD
MR-3523
Figure 1-6 Keyboard Indicators

OPERATOR INFORMATION 9
L 1-L4 Indicators
These indicators are turned on and off by the system software. L 1-L4 are also
used to show self-test errors.
1.2.4 Audible Indicators (Tones)
There are three audible alarms associated with the VT103: a short tone (click), a
long tone (bell). and a series of long tones.
Short .Tone (click) -The short tone is sounded by the terminal whenever a key is
pressed, with the following exceptions.
• The SHIFT or CTRL keys do not generate any keyclick.
• The KBD LOCKED indicator is turned on; in which case. the characters
typed are lost.
• The keyclick feature is turned off in set-up B mode.
Long Tone (bell) -The long tone is sounded by the terminal to indicate. one of the
following conditions.
• A bell code is received by the terminal.
• The margin bell feature is enabled, and the cursor is eight characters
away from the right margin.
Series of Long Tones -The terminal sounds the long tone several times in rapid
succession to indicate that the terminal's memory is having difficulty in reading or
writing the set-up features. When this occurs, check the set-up features and per-
form the recall or save operation again.
1.3 SET-UP MODE
The VT103 has many selectable built-in features. These features provide com-
patibility with an LSl-11 computer within the VT103 (or another host computer).
adapt the terminal to local power. or alter the terminal's operation for your comfort
and efficiency.
The VT103 does not use switches, dials, or knobs to turn the features on or off. It
uses a memory to electronically select and store the features. This is performed in
the set-up mode that is entered by pressing the SET-UP key. There are two set-up
displays.
• Set-up A - displays the location of the tab stops along a visual ruler
numbering each character position on the line.
• Set-up B - summarizes the status of the other terminal features.
NOTE
Data on the video screen before entering set-up
mode is restored to the screen after exiting set-up
mode.

10 OPERATOR INFORMATION
1.3.1 Determining What a Set-Up Feature Does
The set-up features allow the terminal to be tailored to its operating environment.
Table 1-1 lists each feature in one of the following general categories:
• Installation
• Computer
compatibility
• Operator comfort.
During initial installation,
or when options are added or removed, or when the
physical location of the terminal is changed, you verify the settings of the features
in
the installation category.
Features
that affect computer compatibility must be set so that the terminal can
communicate
with the host computer. An error in these settings may cause in-
correct data
to be sent to or received from the computer; or an error may prevent
the terminal from
communicating with the computer. The settings for these fea-
tures
must be obtained from the host computer programmer, operator, or system
manager since there are many combinations
of settings designed to work with
particular computers and special software. These feature settings would normally
change only when you need to communicate with a different computer or a unique
software package.
1.3.2 How to Change a Set-Up Feature
Changing any or all of the set-up features is a simple operation and is generally
performed by following the same basic steps.
1. Enter set-up mode by pressing the SET-UP key.
Table 1-1 Categories of Set-Up Features
Set-Up Feature Installation
ANSl/VT52 Mode
ANSWERBACK Message
AUTO REPEAT
AUTO XON XOFF
BITS
PER CHARACTER
CHARACTERS
PER LINE
CURSOR
INTERLACE x
KEYCLICK
LINE/LOCAL
MARGIN BELL
NEW LINE
PARITY
PARITY SENSE
POWER x
RECEIVE SPEED
SCREEN BACKGROUND
SCREEN BRIGHTNESS
SCROLL
TABS
TRANSMIT SPEED
WRAPAROUND
~
(shifted)
Computer
Compatibility
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Operator
Comfort
x
x
x
x
x
x
x

OPERATOR INFORMATION 11
2. Select the appropriate set-up mode by pressing the 5 key on the main
keyboard each
time you want to switch from set-up A to set-up B or
from set-up B
to set-up A.
3. Position the cursor above
the feature switch or tab stop to be changed.
To position the cursor, the SPACE bar,
..._,-. , TAB and RETURN keys
may be used. Some features
do not use this step since a specific key is
dedicated to changing the feature.
4. Change
the feature setting by pressing either the 6 key on the main
keyboard
or the appropriate dedicated key. Each time the key is pressed
the feature will change, generally to the opposite state.
Table 1-2 summarizes the set-up features. the set-up mode you must be in to
change a given feature. and the key that changes the feature setting.
Table 1-2 Set-Up Feature Change Summary
Changed In
Key Used to
Set-Up Feature Set-Up A Mode
Set-Up B Mode Change Feature
ANSl/VT52 mode x
ITJ
ANSWERBACK message x t
AUTO REPEAT x m
AUTO XON/XOFF x
IT]
BITS PER CHARACTER x
IT_]
CHARACTERS PER LINE x
[]
CURSOR x
IT]
INTERLACE x m
KEYCLICK x
IT_]
LINE/LOCAL
x x w
MARGIN BELL x
[TI
NEW LINE x
ill
PARITY x w
tA special sequence is required for this feature. See Paragraph 1.3.5.