TeleVideo 955 User manual

•
~
CAUTION
This product has been
manufactured under
strict static control
conditions to prevent
damage to static sen·
sitive
components.
Please use static can·
trol pr.ecautions in
servIcing
of this
eqUipment. Field ser·
vice or maintenance
personnel should be
properly grounded
be'~re servicing
equipment.
o c
Thank you,
TeleVideo® Systems, Inc.
READ YOUR OPERATORS
MANUAL BEFORE APPLYING
POWER.
...
NOTICE
READ YOUR OPERATORS
MANUAL BEFORE APPLYING
POWER.
Thank you,
TeleVideo"Systems, Inc.
CAUTION
This product has been
manufactured under
strict stalic control
conditions to prevent
damage to stallc sen-
sit ive components .
Please use static con ·
trol precautions In
servicing
of this
equipment. Field ser-
vice or maintenance
personnel should be
properly grounded
belore servi cing
equipment .

)
1
)
)
)
J
TELEVIDEO@
955 VIDEO DISPLAY TERMINAL
OPERATOR'S
MANUAL
TeleVideo Document l3l969-00-B
11 September 1985
Copyright
Copyright (c) 1985 by TeleVideo Systems, Inc. All rights
reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or
translated into any language or computer language, in any form
or by any means, electronic, mechanical, magnetic, optical,
chemical, manual, or otherwise, without the prior written
permission of TeleVideo Systems, Inc., 1170 Morse Avenue
P.O. Box 3568 Sunnyvale, CA94088-3568 800/521-4897
Disclaimer
TeleVideo Systems, Inc. makes no representations or warranties
with respect to this manual. Further, TeleVideo Systems, Inc.
reserves the right to make changes in the specifications of
the product described within this manual at any time without
notice and without obligation of TeleVideo Systems, Inc. to
notify any person of such revision or changes.
FCC Class A Warning
This peripheral equipment generates, uses, and can radiate
radio frequency energy. If not installed and used in
accordance with the instruction manual, it may cause
interference with radio emissions. This peripheral equipment
has been tested and found to compl y wi th the 1 imi ts for a
Class A computing device, pursuant to Subpart J of Part 15 of
FCC Rules, which are designed to provide reasonable protection
against radio frequency interference when operated in a
commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which
case the user at hi sown risk and expense wi 11 be requi red to
correct the interference. The use of nonshielded I/O cables
may not guarantee compliance with FCC RFI limits.
TeleVideo is a registered trademark of TeleVideo Systems, Inc.
Televideo Systems, Inc., 1170 Morse Avenue P.O. Box 3568
Sunnyvale, CA 94088-3568 800/521-4897
,. \
\
)
)
)
)
)
}
r
)
,
J
TELEVIDEO
to
955 VIDEO DISPLAY TERMINAL
OPERATOR 'S MANUAL
TeleVideo Document 131969-00-8
11 September 1985
Copyright
Copyright (c) 1985 by TeleVideo Systems. Inc . All rights
reserved . No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or
translated into any language or computer language , in any form
or by any means , electro ni c, mechanical, magnetic. optical,
chemical, manual, or ot h erwise , without the prior written
permission of TeleVideo Systems, Inc., 1170 Morse Avenue
P.O. Box 3568 Sunnyvale , CA9 40 88 - 3568 800/521-4897
Disclailler
TeleVideo Systems, Inc . makes no representations or warranties
with respect to this manual. Further, TeleVideo Systems, Inc.
reserves the right to make changes in the specifications of
the product described within this manual at any time without
notice and without obligation of TeleVideo Systems, Inc . to
notify any person of such revision or changes .
PCC
Class A Warning
This peripheral equipment generates , uses, and can radiate
radio frequency energy . If not installed and used in
accordance with the instruction manual, it may cause
interference with radio emissions . This peripheral equipment
has been tested and found to comply with the limits for a
Class A computing device, pursuant to Subpart J of Part 15 of
FCC Rules, w hich are designed to provide reasonable protection
against radio frequency interference when operated in a
commercial environment. Operation of this eq uipment in a
residential area is likely to cause interference, in which
case the user at his own risk and expense will be required to
correct the interference. The use of non shielded I/O cables
may not guarantee compliance with FCC RFI limits .
Televid eo is a registered trademark of TeleVideo Systems, Inc.
Televideo Systems. InCH 1170 Morse Avenue P.O. Box 3568
Sunnyvale, CA 94088-3568 800/521-4897

r
,
['
[
r
r
r
(
r
\
1
L
(

)
)
}
)
TABLE OF CONTENTS
INTRODUCTION
MEET THE 955 TERMINAL
Built-in Features
Options
USING THIS MANUAL
1. INSTALLATION
INSPECTING THE TERMINAL
SELECT~~ A GOOD LOCATION
INSTALLING
THE TERMINAL
Connecting the Keyboard
Connecting the Terminal to the Computer System
Connecting the Terminal to a Printer
PLUGGING IN AND TURNING ON THE TERMINAL
INSTALLATION
SUMMARY
2. SETTING OPERATING VALUES
HOW SET UP WORKS
Set Up Summary
Set Up Categories
THE SET UP MENUS
Main Menu
Other Set Up Menus
3. OPERATING THE TERMINAL
THE KEYBOARD
Character Keys
Editing Keys
Special Keys
Function Keys
OPERATING THE TERMINAL FROM THE KEYBOARD
Resetting the Terminal
Editing and Communication Modes
Editing and Sending Data
SCREEN APPEARANCE
The Cursor
Screen Saver
The Status Line
iii
xi
xi
xi
xi
xii
1
1
1
2
3
4
5
6
6
7
7
7
8
9
9
10
25
25
25
26
30
32
32
32
33
34
35
35
35
36
}
\
)
)
)
)
)
TABL E OF CONTENTS
INTRODUCTION
MEET THE 955 TERMINAL
Built-in Features
Options
USING THIS MANUAL
1. INSTALLATION
INSPECTING THE TERMINAL
SELECT~ _ N;; A GOOD LOCATION
INSTALLfNG THE TERMINAL
Connecting the Keyboa rd
Connecting the Terminal to the Computer System
Connecting the Terminal to a Printer
PLUGGING IN AND TURNING ON THE TERMINAL
INSTALLATION SUMMARY
2. SETTING OPERATING VALUES
HOW SET UP WORKS
Set Up Summary
Set Up Categories
THE SET UP MENUS
Main Menu
Other Set Up Menus
3. OPERATING THE TERMINAL
THE KEYBOARD
Character Keys
Editing Keys
Special Keys
Funct ion Keys
OPERATING THE TERMINAL FROM THE KEYBOARD
Resetting the Terminal
Editing and Communication M odes
Editing and Send i ng Data
SCREEN APPEARANCE
The Curso r
Screen Save r
The Status Line
iii
xi
xi
xi
xi
xii
1
1
1
2
3
•
5
•
•
7
7
7
8
9
9
10
25
25
25
2.
30
32
32
32
33
3.
35
35
35
36

4. MAINTENANCE AND ASSISTANCE
TROUBLESHOOTING
Troubleshooting Table
Running the Self Test
Checking the Line Fuse
IF YOU NEED ASSISTANCE
Technical Support
Customer Service
Service Under Warranty
Shipping the Terminal
5. PROGRAMMING THE 955
ENTERING COMMANDS
Command Descriptions
Using Commands in Your Programs
Entering Commands From the Keyboard
VERIFYING OPERATIONS
Self Test
Monitor Mode
CHANGING OPERATING VALUES
Terminal Operating Modes
Variable Operating Values
Saving Operating Values
programming Compatibility Mode
Changing the Screen Refresh Rate
Resetting the Terminal
RUNNING A PROGRAM
6. CONTROLLING THE TERMINAL'S OPERATION
KEYBOARD AND BELL
Keyboard Repeat Mode
Locking/Unlocking the Keyboard
Locking Four Terminal Keys
Editing Key Mode
Keyclick
Sounding the Bell
Selecting the Bell Column
Margin Bell Mode
SCREEN
APPEARANCE
Screen Saver
Screen Visibility
Screen Background
Visual Attributes
Attribute Space Mode
Normal Intensity Mode
Attribute Base Mode
Selecting the Status Line Attribute
Cursor Style
Columns per Line Mode
iv
Contents
39
39
39
41
42
43
44
44
44
44
45
45
46
46
47
47
47
48
49
49
50
50
51
52
52
54
55
55
55
55
56
56
56
56
57
57
57
57
58
58
58
60
60
60
61
61
61
"
4. MAINTENANCE AND ASSISTANCE
TROUBLESHOOTING
Tr oubleshooting Table
Running the Self Test
Checking the Line Fuse
IF YOU NEED ASSISTANCE
Technical Support
Customer Service
Service Under Warranty
Shipp i ng the Terminal
5 . PROGRAMMING THE 955
ENTERING COMMANDS
Command Descriptions
Using Commands in Your Programs
Entering Commands From the Keyboard
VERIFYING OPERATIONS
Self Test
Monitor Mode
CHANGING OPERATING VALUES
Terminal Operating Modes
Variable operating Values
Saving Operating Values
programming Compatibility Mede
Changing the Screen Refresh Rate
Resetting the Terminal
RUNNING A PROGRAM
6 . CONTROLLING THE TERMINAL'S OPERATION
KEYBOARD AND BELL
Keyboard Repeat Mode
Locking/Unlocking the Keyboard
Locking Four Terminal Keys
Editing Key Mode
Keyclick
Sounding the Bell
Selecting the Bell Column
Margin Bell Mode
SCREEN APPEARANCE
Screen Saver
Screen Visibility
Screen Background
Visual Attributes
Attribute Space Mode
Normal Intens i ty Mode
Attribute Base Mode
Selecting the Status Line Attribute
Cursor Style
Columns per Line Mode
iv
Contents
39
39
39
41
42
43
44
44
44
44
45
45
46
46
47
47
47
48
49
49
50
50
51
52
52
54
55
55
55
55
56
•
56
56
56
57
57
57
57
58
58
58
60
60
60
61
61
61

J
)
CHARACTER SETS AND BLOCK GRAPHICS
Selecting a Character Set
Special Graphjcs Mode
Multinational Character Set
Data Word Mode
Block Graphics
Optional Graphics Firmware
7. EDITING
EDITING
MODES
Autowrap Mode
New Line Mode
DOWN Key Mode
Write Protect and Protect Modes
ADDITIONAL SCREEN MEMORY
Selecting the Number of Lines per Page
Autopage Mode
Moving to Another Page
SCROLLING
Controlling the Rate of Scrolling
Defining a Scrolling Region
Line Lock
CURSOR CONTROL
Line Feed and Reverse Line Feed
Directional Cursor Movement
Addressing the Cursor
Reading the Cursor
Addressing the Cursor in Decimal Units
Cursor Horne
Reading the Cursor in Decimal Units
TAB STOPS
Setting a Column of Tab Stops
Moving the Cursor to a Tab Stop
Clearing Typewriter Tab Stop(s)
Clearing Field Tab Stop(s)
EDITING DATA
Line and Page Edit
Insert and Replace Mode
The Replacement Character
Inserting Data
Deleting Data
Erasing Data
Clearing Data
v
Contents
62
62
62
63
64
64
65
67
67
67
67
68
68
71
72
73
74
75
75
76
76
78
78
80
83
84
85
85
85
86
86
87
88
88
89
89
89
90
90
91
93
94
\
l
>
)
\
)
)
I
I
CHARACTER SETS AND BLOCK GRAPHICS
Selecting a Character Set
Special Graphics Mode
Multinational Character Set
Data Word Mode
Block Graphics
Optional Graphics Firmware
7. EDITING
EDITING MODES
Autowrap Mode
New Line Mode
DOWN Key Mode
Write Protect and Protect Modes
ADDITIONAL SCREEN MEMORY
Selecting the Number of Lines per Page
Autopage Mode
Moving to Another Page
SCROLLING
Controlling the Rate of Scrolling
Defining a Scrolling Region
Line Lock
CURSOR CONTROL
Line Feed and Reverse Line Feed
Directional Cursor Movement
Addressing the Cursor
Reading the Cursor
Addressing the Cursor in Decimal Units
Cursor Home
Reading the Cursor in Decimal Units
TAB STOPS
Setting a Column of Tab Stops
Moving the Cursor to a Tab Stop
Clearing Typewriter Tab Stop(s)
Clearing Field Tab Stop(s)
EDITING DATA
Line and Page Edit
Insert and Replace Mode
The Replacement Character
Inserting Data
Deleting Data
Erasing Data
Clearing Data
v
Contents
62
62
62
63
64
64
65
67
67
67
67
68
68
71
72
73
74
75
75
76
76
78
78
80
83
84
85
85
85
86
86
87
88
88
89
89
89
90
90
91
93
94

Contents
8. COMMUNICATIONS 97
CHANGING PORT OPERATING VALUES 97
SETTING UP COMMUNICATIONS WITH THE COMPUTER 98
Selecting a Handshaking Protocol 98
Receive Buffer Fill Limit 99
Transmission Control Mode 99
Selecting the Transmit Delay Rate 100
Communication Modes 100
Setting the Communication Mode 102
SENDING SCREEN DATA 102
Delimiters 102
Reprogramming Delimiters 103
Data Markers 103
Sending Text 104
LOADING AND SENDING MESSAGES 107
Sending the Terminal's Identification 108
The Answerback Message 108
Displaying the Bottom Information Line's Contents 108
Selecting Both Information Lines' Contents 109
Loading the User Messages 109
Sending the Information Line Contents III
THE FUNCT KEY III
PRINTING 112
Print Commands 112
Page Print Flip Mode 116
Printer Handshaking Protocols 116
Page Print Terminator 118
9. REPROGRAMMABLE KEYS 119
FUNCTION KEYS 119
Selecting the Function Key Set 121
Reprogramming Function Keys 121
Saving the Contents of the Function Keys 124
Invoking a Function Key 124
REPROGRAMMING EDITING KEYS 125
The SEND Key 125
One Editing Key 125
All Editing Keys 128
vi
Contents
8 . COMMUNICATIONS 97
CHANGING PORT OPERATING VALUES 97
SETTING UP COMMUNICATIONS WITH THE COMPUTER 98
Selecting a Handshaking Protocol 98
Receive Buffer Fill Limit 99
Transmission Control Mode 99
Selecting the Transmit Delay Rate 100
Communication Modes 100
Setting the Communication Mode 102
SEND ING SCREEN DATA 102
Delimiters 102
Reprogramming Delimiters 103
Data Markers 103
Sending Text 104
LOADING AND SENDING MESSAGES 107
Sending the Terminal's Identification 108
The Answerback Message 108
Displaying the Bottom Information Line's Contents 108
Selecting Both Information Lines' Contents 109
Loading the User Messages 109
Sending the Information Line Contents 111
THE FUNCT KEY 111
PRINTING 1 12
Print Commands 112
Page Print Flip Mode 116
Pri n ter Handshaking Protocols 116
Page Print Terminator 118
9. REPROGRAMMABLE KEYS
FUNCTION KEYS
Selecting the Function Key Set
Reprogramming Function Keys
Saving the Contents of the Function Keys
Invoking a Function Key
REPROGRAMMING EDITING KEYS
The SEND Key
One
Editing Key
All Editing Keys
vi
119
119
121
121
12.
12.
125
125
125
128

)
APPENDICES
A
SPECIFICATIONS
B STATEMENT OF LIMITED WARRANTY
C ASCII CODE TABLES
D
MONITOR MODE CONTROL CHARACTERS
E CURSOR COORDINATES
FFOREIGN
CHARACTER SETS
GMULTINATIONAL
CHARACTER SET
H
CONTROL CODES AND ESChPE SEQUENCES
I
CALCULATOR MODE
GLOSSARY
INDEX
QUICK REFERENCE GUIDE
vii
Contents
A-1
A-4
A-5
A-7
A-8
A-9
A-14
A-16
A-23
G-1
X-1
Q-1
)
\
,
>
I
,
}
APPENDICES
A SPECIFICATIONS
B
STATEMENT OF LIMITED WARRANTY
C ASCII CODE TABLES
o MONITOR MODE CONTR OL CHARACTERS
E CURSOR COORDINATES
F FOREIGN
CHARACTER SETS
G MULTINATIONAL CHARACTER SET
H CONTROL CODES AND ESCAPE SEQUENCES
I CALCULATOR MODE
GLOSSARY
INDEX
QUICK REFERENCE GU IDE
vii
Contents
'-1
'-4
A-5
A-7
A-8
A-9
A-14
A-16
A-23
G-l
X-I
0-1

Contents
LIST OF FIGURES
1-1
1-2
1-3
1-4
1-5
2-1
2-2
2-3
2-4
2-5
2-6
3-1
3-2
3-3
3-4
3-5
3-6
4-1
4-2
4~3
5-1
6-1
6-2
7-1
7-2
7-3
7-4 c·
7-5
7-6
7-7
7-8
7-9
7-10
8-1
8-2
F-l
F-2
F-3
F-4
F-5
F-6
F-7
F-8
Comfortable Terminal Lighting
Ideal Terminal Placement
955 Terminal, Front View
955 Terminal, Rear View
Pin Numbers (25-Pin RS-232 Connector)
Main Menu
Main Port Menus
Print Communications Menu
Screen Menus
Keyboard Menus
Programming Menus
Character Keys
Editing Keys
Special Keys
Data Sent by the Unshifted SEND Key
Data Sent by the Shifted SEND Key
955 Status Line
Location of the Line Fuse
Good Fuse
Burned-Out Fuse
Typical Monitor Mode Display
Special Graphics and Multinational Characters
Display with Three Blocks of Graphics
Effect of Line Feed and Carriage Return Commands
Sample Protected Form with Spaces Left for Data Entry
Partial Page of Memory Displayed on the Screen
Dividing Memory into Pages
Cursor Movement in Autopage Mode
Cursor Movement Between Adjacent Pages
Scrolling Movement Within a Scrolling Region
Setting Field Tab Stops
Deleting Data
Erasing Data
Data Flow in Communication Modes
Print Modes
u.S. ASCII Keyboard Layout
U.K. Keyboard Layout
French Keyboard Layout
German Keyboard Layout
Spanish Keyboard Layout
Finnish Keyboard Layout
Norwegian Keyboard Layout
Italian Keyboard Layout
viii
2
2
3
3
4
9
10
14
16
19
22
26
26
31
34
34
36
43
43
43
48
63
65
68
70
72
73
74
74
77
87
92
93
101
113
A-9
A-l0
A-l0
A-ll
A-ll
A-12
A-12
A-13
Contents
LIST OF FIGURES
1-1
1-2
1-3
1-4
1-5
2-1
2-2
2-3
2-4
2-5
2-6
3-1
3-2
3-3
3-4
3-5
3-6
4-1
4-2
4-3
5-1
6-1
6-2
7-1
7-2
7-3
7-4(
7-5
7-6
7-7
7-8
7-9
7-10
8-1
8-2
F-l
F-2
F-3
F-4
F-5
F-6
F-7
F-8
Comfortable Terminal Lighting
Ideal Terminal Placement
955 Terminal, Front View
955 Terminal, Rear View
Pin Numbers (25-Pin RS-232 Connector)
Main Menu
Main Port Menus
Print Communications Menu
Screen Menus
Keyboard Menus
Programming Menus
Character Keys
Editing Keys
Special Keys
Data Sent by the Unshifted SEND Key
Data Sent by the Shifted SEND Key
955 Status Line
Location of the Line Fuse
Good Fuse
Burned-Out Fuse
Typical Monitor Mode Display
Special Graphics and Multinational Characters
Display with Three Blocks of Graphics
Effect of Line Feed and Carriage Return Commands
Sample Protected Form with Spaces Left for Data Entry
Partial Page of Memory Displayed on the Screen
Dividing Memory into Pages
Cursor Movement in Autopage Mode
Cursor Movement Between Adjacent Pages
Scrolling Movement Within a Scrolling Region
Setting Field Tab Stops
Deleting Data
Erasing Data
Data Flow in Communication Modes
Print Modes
U. S . ASCII Keyboard Layout
U.K. Keyboard Layout
French Keyboard Layout
German Keyboard Layout
Spanish Keyboard Layout
Finnish Keyboard Layout
Norwegian Keyboard Layout
Italian Keyboard Layout
vi it
2
2
3
3
4
9
10
14
16
19
22
26
26
31
34
34
36
43
43
43
48
63
65
68
70
72
73
74
74
77
87
92
93
101
113
A-9
A-lO
A-IO
A-11
1'.-11
A-12
A-12
A-13

Contents
LIST OF TABLES
5
5
8
9
11
14
17
20
22
27
31
35
36
39
46
51
53
59
69
75
78
79
81
87
91
92
95
100
103
105
114
116
120
120
126
127
A-5
A-6
A-9
A-16
A-17
A-21
A-22
A-22
Protocols
Key Codes
Key Codes
Unshifted Editing Keys
Shifted Editing Keys
RS-232C Computer (DTE) Interface Connector Assignments
RS-232C Printer (DCE) Interface Connector Assignments
Set Up Categories
Main Set Up Menu
Main Port Set Up Menus
Printer Port Set Up Menu
Screen Set Up Menus
Keyboard Set Up Menus
Programming Set Up Menus
Editing Keys
Special Keys
PRINT Key Operation
Status Line Values
Troubleshooting Terminal Problems
Command Elements
Effects of Compatibility Mode
Summary of Reset Methods
Effects of Visual Attributes
Effects of Protect Mode
Data Loss Due to Scrolling
Effect of Line Feed Code on Cursor Movement
Effect of Reverse Line Feed Code on Cursor Movement
Effect of Cursor Movement Commands
Effect of Protect Mode on Tabulation Commands
Effect of Protect Mode on Insert Commands
Effect of Protect Mode on Delete Commands
Clear Commands
Communication Modes
Default Delimiter Values
Send Commands
Print Commands
Printer Port Handshaking
Set One Default Function
Set Two Default Function
Default and Ps Values of
Default and Ps Values of
ASCII Code Chart
ASCII Control Character Abbreviations
Character Set Comparison
Control Codes
Escape Sequences
ESC [ Commands
Terminal Operating Modes
Variable Operating Values
1-1
1-2
2-1
2-2
2-3
2-4
2-5
2-6
2-7
3-1
3-2
3-4
3-5
4-1
5-1
5-2
5-3
6-1
7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
8-1
8-2
8-3
8-4
8-5
9-1
9-2
9-3
9-4
C-l
C-2
F-l
H-l
H-2
H-3
H-~
H-5
)
ix
>
•
)
>
,
\
)
)
}
Contents
LIS T OF TABLES
1-1
1-2
2-1
2-2
2-3
2-4
2-5
2-6
2-7
3-1
3-2
3-4
3-5
4-1
5-1
5-2
5-3
6-1
7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
8-1
8-2
8-3
8-4
8-5
9-1
9-2
9-3
9-4
C-l
C-2
F-l
H-l
H-2
H-3
H-t'
H-5
RS-232C Computer (OTE) Interface Connector ~s8ignments
RS-232C Printer (DCE) Interface Connector Assignments
Set Up Categories
5
5
8
9
Main Set Up Menu
Main Port Set Up Menus
Printer Port Set Up Menu
Screen Set Up Menus
Keyboard Set Up Menus
Programming Set Up Menus
Editing Keys
Special Keys
PRINT Key Operation
Status Line Values
Troubleshooting Terminal Problems
Command Elements
Effects of Co~patibility Mode
Summary of Reset Methods
Effects of Visual Attributes
Effects of Protect Mode
Data Loss Due to scrolling
Effect of Line Feed Code on Cursor Movement
Effect of Reverse Line Feed Code on Cursor Movement
Effect of Cursor Movement Commands
Effect of Protect Mode on Tabulation Commands
Effect of Protect Mode on Insert Commands
Effect of Protect Mode on Delete Commands
Clear Commands
Communication Modes
Default Delimiter Values
Send Commands
Print Commands
Printer Port Handshaking
Set One Default Function
Set Two Default Function
Default and Ps Values of
Default and Ps Values of
ASCII Code Chart
Protocols
Key Codes
Key Codes
Unshifted Editing Keys
Shifted Editing Keys
ASCII Control Character Abbreviations
Character Set Comparison
Control Codes
Escape Sequences
ESC [ Commands
Terminal Operating
Variable Operating
Modes
Values
ix
11
14
17
20
22
27
31
35
36
39
46
51
53
59
69
75
78
79
81
87
91
92
95
100
103
105
114
116
120
120
126
127
A-5
A-6
A-9
A-16
A-17
A-21
1\-22
1\-22

r
t
r
L
r
•
,
r
(
r
l
,
l
L

INTRODUCTION
MEET THE 955 TERMINAL
Televideo's 955 terminal is designed with quality,
dependability, and user convenience in mind. It is fully code
compatible with TeleVideo's 925/950 family of terminals, but
also offers such innovative features as a high-resolution
screen with amber color option, 64 function keys, and two
operator information lines.
Built-in Features
TeleVideo's 955 terminal is a "smart" terminal with many
built-in features:
Full 925/950 programming compatibility
Tilt-and-swivel. case
High-resolution screen
l4-inch, BO/132-column display
Easy-to-use set up menus
Switchable space/no-space visual attributes
Top and bottom operator information lines
Two sets of 32 programmable function keys
Reprogrammable editing keys
Special graphics and multinational character sets
Options
The following options are available:
RS-422 communication interface
One or three additional pages of memory
Tektronix 40l0/40l4-compatible graphics
Eight foreign-language character sets
No-cost amber screen
20 rnA current loop
Function key overlays
Blank keycaps
WordStar(tm)-CP/M(r) EPROM and keyboard overlay
Contact your distributor or TeleVideo's spare parts department
to order any options.
xi
}
)
\
)
)
)
IBTRODUCTION
MEET THE 955 TERMINAL
Televideo's 955 terminal is designed with quality,
dependability, and user convenience in mind. It is fully code
compatible with TeleVideo ' s 925/950 family of terminals, but
also offers such innovative features as a high-resolution
screen wi th amber color option, 64 function keys, and two
operator information lines.
Built-in Features
TeleVideo's 955 terminal is a "smart" terminal with many
built-in features :
Full 925/950 programming compatibility
Tilt-and-swivel. case
High-resolution screen
14-inch. BO/ 132- column display
Easy-to-use set up menus
Switchable space/no-space visual attributes
Top and bottom operator information lines
Two sets of 32 programmable function keys
Reprogrammable editing keys
Special graphics and mu ltinati onal character sets
Options
The following options are available:
RS-422 communication interface
One or three additional pages of memory
Tektronix 40l0/40l4-compatible graphics
Eight foreign-language character sets
No-cost amber screen
20 mA current loop
Function key overlays
Blank keycaps
w ordStar(tm)-CP/M(r) EPROM and keyboard overlay
Contact your distributor or TeleVideo's spare parts department
to order any options.
xi

Introduction
USING THIS MANUAL
The first chapters of the manual contain general user
information. Chapters 1 through 3 describe how to install the
terminal, change operating values in the set up menus, and
control the terminal from the keyboard. Chapter 4 lists
troubleshooting procedures and tells you how to obtain
service.
Chapters 5 through 9 are for programmers. They explain how
the terminal operates and all the programming commands.
At the back of the manual is reference material: appendices,
glossary, index, and a programmer's quick reference guide.
xii
Introduction
USING THIS MANUAL
The first chapters of the manual contain general user
information. Chapters 1 through 3 describe how to install the
terminal , change operating values in the set up menus, and
control the terminal from the keyboard. Chapter 4 lists
troubleshooting procedures and tells you how to obtain
service .
Chapte r s 5 through 9 are for p r ogrammers . They explain how
the terminal operates and all the programming commands.
At the back of the manual is reference material : appendices,
glossary . index, and a programmer's quick reference guide .
xii
•

1. INSTALLATION
This chapter tells you how to install the terminal.
of the chapter summarizes the installation steps.
INSPECTING THE TERMINAL
The end
\
)
WARNING! Do not open the terminal case. Opening the case
exposes you to potential shock hazards. If you wish to
inspect the interior of your terminal, have a qualified
technician open the case and discharge the voltage for you.
After you unpack the terminal, keep the shipping carton and
packing material in case you move or ship the terminal again.
In the packing carton you should find (in addition to this
manual) :
The terminal
A keyboard
A coiled keyboard cable
A power cable.
Inspect the keyboard, cabinet, and video screen for shipping
damage. If anything is missinq or damaged, contact your
distributor or dealer.
SELECTING A GOOD LOCATION
Make sure the site you have chosen for the terminal has 4
inches (10.2 cm) of clearance for ventilation on all sides.
The orientation of the terminal's screen can greatly affect
your comfort. Reflections and bright light are the most
common causes of eye strain. Choose a site with indirect
lighting, away from windows and other sources of bright light,
as Figure 1-1 shows.
You can avoid fatigue by selecting furniture whose design is
conducive to good working posture and placing the terminal at
the correct height. The keyboard should be lower than the
terminal screen.
1
>
,
)
1. INSTALLATION
This chapter tells you how to install the terminal. The end
of the chapter summarizes the installation steps .
INSPECTING
THE TERMINAL
WARNINGI Do not open the ter.inal case . Opening the case
exposes you to potential shock hazards. If you wish to
inspect the interior of your ter.inal, ha ve a qu a lified
technician open the case and discharge th e voltag e for you.
After you unpack the terminal, keep t he shipping carton and
p~cking material in case you move or ship the terminal aga i n.
In the packing carton you should find (in addition to this
I!lanual) :
The terminal
A keyboard
A coiled keyboard cable
A power cable.
Inspect the keyboard , cabinet, and video screen fo r shipping
damage . If anything is missinq or damaged, c o ntact your
distributor or dealer.
SELECTING A GOOD LOCATION
Make sure the site you have chosen for the terminal has 4
inches (10.2 em) of clearance for ventilation on all sides .
The orientation of the terminal's screen can greatly affect
your comfort. Reflections and bright light are the most
common causes of eye st r a i n. Choose a site with indirect
lighting, away from wind ows a nd ot h er sources of bright light,
a.s Figure 1- 1 sho ws.
You can avoid fatigue by selecting furniture whose design i s
conducive to good w orking posture and placing the terminal at
the correct height. The keyboard should be lower than the
terminal screen .
1

Installation
Figure 1-2 shows the ideal relationship between the terminal
and the operator.
Figure 1-1
Comfortable Terminal Lighting
WINDOW WINDOW WINDOW
Figure 1-2
Ideal Terminal Placement
INSTALLING THE TERMINAL
NOTE1
Tests performed on TeleVideo terminals by Underwriters
Laboratories indicate they emit virtually no radiation and
pose no health hazard.
Now you are ready to pl ug in the keyboard' and connect your
terminal to a computer and printer. Figures 1-3 and 1-4 show
front and rear views of the 955 terminal with ports, switches
and connectors marked.
2
Inst allat ion
Figure 1-2 shows the ideal relationship between the terminal
and the operator .
Figure 1-1
eo.fortable Ter.inal Lighting
Figure 1-2
Ideal Ter . inal Placeaent
INSTALLING THE TERMINAL
NOTE I Tests performed on TeleVideo terminals by Underwriters
Laboratories indicate they emit virtually no radiation and
pose no health hazard.
Now you are ready to plug in the keyboard and connect your
terMinal to a computer and printe r . Figures 1-3 and 1-4 show
front and rear views of the 955 terminal with ports , switches
and connectors marked .
2

Installation
connecting the Keyboard
Plug the ends of the coiled keyboard cable into the front of
the keyboard case and the front of the terminal (Figure 1-3).
Figure 1-3
955 Terminal, Front View
ON/OFF SWITCH
KEYBOARD
CONNECTOR
Figure 1-4
955 Terminal, Rear View
OPTIONAL
INTERFACE PORT
MAIN
PORT
PRINTER
PORT
POWERCABLE_~~==~~~;:~~~~
SOCKET
3
>
)
I nstallation
connecting the Keyboard
Plu g the ends of the coiled keyboard cable into the front of
the keyboard case and the front of the terminal (Figure 1-3) .
Figure 1-3
955 Terainal. Pront View
Pigure 1-4
955 Terainal. Rear Vi ew
-- ~~-
3

Installation
connecting the Terminal to the Computer System
Before you connect the terminal, make sure its volt~ge is the
same as your electrical outlet's. Your terminal should carry
a label stating whether its setting is 115 volt or 230 volt
ac power. If you want to change the voltage setting, call the
TeleVideo Customer Service Department for instructions.
Before you connect the terminal to the computer, measure the
distance between them. If the distance is less than 50 feet,
you can use an RS-232C interface (with a 25-pin connector)
between the terminal and the computer.
For distances more than 50 feet, consult your dealer or call
TeleVideo's Peripherals Technical Support Department for help
in selecting the correct interface. See the section on
assistance in Chapter 4 for information about calling
TeleVideo.
If you use the RS-232C interface, follow these steps:
1. Compare the suggested pin connector assignments, listed
in Table 1-1, with those required by your computer.
Figure 1-5 shows the terminal's pin connector numbers.
If necessary, change the interface cable's pin
assignments (or ask your service technician to do it for
you) .
2. Connect the interface cable to the terminal's main port
and the computer's RS-232C port.
NOTEI Not all computers have a one-to-one pin
compatibility with standard RS-232C pin assignments.
Typically, pins 2, 3, and 7 are required to transmit di'l.ta
between the terminal and the computer. If your computer
fails to operate properly, call the computer manufacturer
for assistance in wiring the interface cable.
Figure 1-5
Pin Numbers (25-Pin RS-232 Connector)
13
@@@@@@@@@@@@@1
@@@@@@@@@@@@
25
14
4
Installat ion
connecting the Terminal to the Computer System
Before you connect the terminal, make sure its voltage is the
same as your electrical outlet's . Your terminal should carry
a label stating whether its setting is 115 volt or 230 volt
ac power. If you want to change the voltage settinq, call thE'!
TeleVideo Customer Service Department for instructicns .
Before you connect the terminal to the computer, measure the
distance between them. If the distance is less than 50 feet,
you can use an RS-232C interface (with a 25-pin connector)
between the terminal and the computer .
For distances more than 50 feet, consult your dealer or call
Te l eVideo's Peripherals Technical Suppo r t Department for help
in selecting the correct interface. See the section on
assistance in Chapter 4 for information about calling
TeleVideo.
If you use the RS-232C interface, follow these steps :
1 .
Compare the suggested pin connector assignments, listed
i n Table 1-1, with those required by your computer .
Figure 1-5 shows the terminal's pin connector numbers .
If necessary, change the interface cable's pin
assignments (or ask your service technician to do it for
you) .
2 .
Connect the intE'!rface cable to the terminal's main port
and the computer's RS-232C port.
NOTEI Not all computers have a one-to-one pin
compatibility with standard RS-232C pin assignments .
Typically , pins 2, 3, and 7 are required to transmit d"lta
between the terminal and the computer . If your computer
fails to operat e properly , call the computer manufacturer
for assistance in w iring the interface cable .
Figure 1 -5
Pin Nu_bers (25-Pin RS-232 Connector)
@@@@@@@@@@@@@
@@@@@@@@@@@@
4
,

\
Installation
Table 1-1
RS-232C Computer (DTE) Interface Connector Assignments
Pin No.
1
2**
3**
4
5
6
7**
8
20
Signal Name*
Frame Ground
Transmit Data
Receive Data
Request to Send
Clear to Send
Data Set Ready
Signal Ground
Data Carrier Detect
Data Terminal Ready
Direction
Output
Input
Output
Input
Input
Input
Output
*Refer to the EIA's Standard RS-232C for signal definitions.
**The terminal requires these signals.
Connecting the Terminal to a Printer
1. Check your printer's pin connector against the terminal's
printer port pin assignments, shown in Table 1-2.
2. Connect an RS-232C interface cable to the printer port
(Figure 1-4) and to an RS-232C-compatible serial printer.
NOTE! Not all printers have a one-to-one pin
compatibility with standard RS-232C pin assignments. To
transmit data from the terminal to the printer, you need
only pins 3, 7, and 2 and/or 20. If your printer fails
to operate properly, call the printer manufacturer.
Table 1-2
RS-232C Printer (DCE) Interface Connector Assignments
Pin No.
1
2
3
6
7
11**
20
Signal Name*
Frame Ground
Receive Data
Transmit Data
Data Set Ready
Signal Ground
Printer Busy
Data Terminal Ready
Direction
Input
Output
Output
Input
*Reference EIA Standard RS-232C for signal definitions.
**Nonstandard handshaking signal used by several printers such
as Epson, Texas Instruments, and Okidata. To use pin 11
instead of pin 20, call your service technician.
5
}
)
)
Install~tio n
Table 1-1
RS-232C Computer (DTE) Interface Connector Assign.ents
Pin
No.
signal Na me-
Direction
1
Frame Ground
2"" Transmit Data
Output
3""
Receive
Data
Input
4 Request to
Send Output
5 Clear to Send
Input
6
Data Set Ready
Input
,"" Signal Ground
B Data Carrier Detect Input
20 Data
Terminal Ready
Output
*Refer to the EIA's Standa rd RS-232C for signal definitions .
**The terminal requires these signals.
connecting the Terminal to a Printer
1 . Check your printer ' s pin connector against the terminal's
printer port pin assignments, shown in Table 1-2 .
2. Connect an RS-232C interface cable to the printer port
(Figure 1-4) and to an RS-232C-CODpatible serial printer.
NOTEI Not all printers have a one-to-one pin
compatibility with standard RS-232C pin assignments. To
transmit data from the terminal to the printer, you need
only pins 3, 7, and 2 and / o r 20. If your printer fails
to operate properly , call the printer manufacturer.
Table 1-2
RS-232C Printer (DCE) Interface Connector Assign. e nts
Pin
No. Signal Sa.e·
Dire c tion
1 Fra me Ground
2 Receive Data
Input
3
Transmit
Data
Output
6 D
ata
Set
Ready
Output
,
Sig nal
Gr ound
11· · Pr inter Busy
20 Data T erminal Ready
Input
·Reference EIA Standard RS-232C for signal definitions.
··Nonstandard handshaking Signal used by several printers such
as Epson , Texas Instruments, and Okidata . To use pin 11
instead of pin 20, call yo ur service technici~n .
5