TeleVideo 950 User manual

~leVided
Operator's Manual Model 950

February, 1981
©Copyright Televideo, 1981
1981 TelVideo@ Inc.
Specifications and information subject
to change without prior notification.
TeleVideo No. B300002-001

CONTENTS
Paragraph
Page
1.1
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
1.2
1.2.1
1.2.2
1.3
1.4
1.5
1.6
1.7
2.1
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.3
2.4
2.5
3.1
3.2
3.2.1
3.2.2
3.2.3
3.3
CHAPTER 1 GENERAL INFORMATION
INTRODUCTION. . . . . . . . . . . . . . . . . .. 1-1
GeneralInformation. . . . . . . . . . . . . . . . .. 1-1
FunctionalDescription. . . . . . . . . . . . . . .. 1-1
Operation. . . . . . . . . . . . . . . . . . . . . . . . . .. 1-1
PerformanceVerification. . . . . . . . . . . . .. 1-1
Functional Description. . . . . . . . . . . . . . .. 1-1
Maintenance. . . . . . . . . . . . . . . . . . . . . . .. 1-1
PRODUCT DESCRIPTION. . . . . . . . . .. 1-1
Additional OEM Features. . . . . . . . . . . .. 1-1
Options ............................. 1-1
SAFETY PRECAUTIONS. . . . . . . . . . .. 1-1
RELATED
DOCUMENTATION. . . . . . . . . . . . . . . .. 1-2
SPECIFICATIONS. . . . . . . . . . . . . . . . .. 1-2
LIMITED AND EXTENDED
WARRANTy ....................... 1-2
MANUFACTURER AND
AUTHORIZED DEALER
SERVICES. . . . . . . . . . . . . . . . . . . . . . . . .. 1-2
CHAPTER 2 INSTALLATION
INTRODUCTION ................... 2-4
UNPACKING
AND
RECEIVING INSPECTION. . . . . . . . . .. 2-4
Shipping Damage
Inspection. . . . . . . . . .. 2-4
Model950 Unpacking
................. 2-4
Enclosed Documents. . . . . . . . . . . . . . . .
.. 2-4
InspectionProcedures
................ 2-4
Reshipping Procedures
................ 2-4
SITEPREPARATION ................ 2-4
INSTALLATION AND
SETUP PROCEDURE ............... 2-4
INSTALLATIONCHECKS . . . . . . . . . .. 2-6
CHAPTER 3 OPERATION
INTRODUCTION ... . . . . . . . . . . . . . . .. 3-8
REAR PANEL CONTROLS
AND CONNECTORSI
TURN-ON/TURN-OFF
PROCEDURE ....................... 3-8
Rear Panel Controls
and Connectors . . . . . . . . . . . . . . . . . . . . .. 3-8
Turn-On Procedure. . . . . . . . . . . . . . . . . .. 3-8
Turn-Off Procedure . . . . . . . . . . . . . . . . .. 3-8
DESCRIPTIONS OF
KEYBOARD MODES AND
FUNCTIONS ....................... 3-8
Paragraph
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.4
3.5
3.6
3.7
3.8
3.8.1
3.8.2
3.8.3
3.9
3.10
3.10.1
3.10.2
3.10.3
3.10.4
3.10.5
3.11
3.12
3.13
3.14
3.15
3.15.1
Alpha-Numeric Keys
................. .
Editing
and CursorControl Keys ....... .
FunctionKeys
...................... .
SET- UP INO SCROLLKey .......... .
BREAK Key
........................ .
Key Modifiers
...................... .
KEYBOARD SETUP
PROCEDURE ...................... .
USER LINE PROGRAMMING ....... .
FUNCTION KEY
PROGRAMMING .................. .
CURSORATTRIBUTES ............ .
USINGTABS ...................... .
Typewriter Tabs
..................... .
Field Tabs
.......................... .
Tab Operations
..................... .
OTHER MODE CONTROLS ......... .
TEXT/DATA
CONTROL MODES ................ .
Editing Text
........................ .
Inserting Text
....................... .
Print Control ....................... .
SendFunction ...................... .
FunctionKeys
...................... .
OPERATING IN
BLOCKMODE ..................... .
OPERATING IN
LOCALMODE ..................... .
OPERATING IN HALF
DUPLEX MODE ................... .
OPERATING IN FULL
DUPLEX MODE ................... .
PROGRAMMER'S NOTES
AND INFORMATION .............. .
Communications Mode
and
Word Structure ..................... .
3.15.2 Editing
and Cursor Control ........... .
3.15.3
Protect Mode ....................... .
3.15.4 Tab Programming
................... .
3.15.5
Print FunctionProgramming .......... .
3.15.6 Send FunctionProgramming
.......... .
3.15.7 Video Attributes
.................... .
3.15.8 Special Graphics
.................... .
3.15.9 PageControl
....................... .
3.15.10 ClearFunction
...................... .
3.15.11 MonitorMode ...................... .
3.15.12 InsertCharacter Loading
............. .
3.15.13 Main
Port Programming ............. .
3.15.14 Printer
Port Programming ............ .
3.15.15 X-ON, X-OFF, Control
.............. .
3.15.16 User
PROM ........................ .
3.15.17 Line Lock
.......................... .
3.15.18. Wraparound Feature
................ .
Page
3-9
3-11
3-11
3-12
3-12
3-12
3-12
3-13
3-13
3-13
3-14
3-14
3-14
3-14
3-14
3-14
3-14
3-14
3-15
3-15
3-15
3-15
3-15
3-15
3-16
3-16
3-16
3-16
3-17
3-17
3-19
3-19
3-21
3-21
3-22
3-22
3-22
3-22
3-22
3-22
3-24
3-24
3-24
3-24

Contents (continued)
Paragraph
Page
3.15.19 Video Display Control ................ 3-24
3.15.20 Reference Tables
..................... 3-24
4.1
4.2
4.3
5.1
5.2
5.3
5.4
CHAPTER 4 PERFORMANCE
VERIFICATION
INTRODUCTION ................... 4-34
SELF-TEST 1 ....................... 4-34
SELF-TEST2 ....................... 4-34
CHAPTER 5 FUNCTIONAL DESCRIPTION
INTRODUCTION ................... 5-35
TERMINALOVERVIEW ............. 5-35
DISPLAY PROCESSOR .............. 5-35
KEYBOARD AND KEYBOARD
INTERFACE CIRCUITS ............. 5-35
List of Illustrations
Figure Page
2-1 Terminal Cabinet Receiving Inspection 2-5
2-2 115/230 V Select Switch 2-6
2-3
Host Interface Connector Configuration for
Current Loop 2-6
2-4
Baud Rate, Word Length, and Stop Bit
Settings 2-7
2-5 Operating Mode Switch Settings 2-7
3-1 Model 950 Rear Panel Controls
and
Connectors 3-8
3-2
Model 950 Communications Modes 3-9
3-3 Model 950 Screen Display 3-10
3-4
Model 950 Keyboard 3-10
3-5 Model 950 Video Attributes
3-21
3-6
Model 950 Special Graphics Characters
3-21
4-1 Self Test 1 Screen Display 4-34
5-1 Model 950 Simplified Block Diagram 5-35
6-1 Keyboard Assembly Bottom 6-36
6-2
Power Supply Fuses 6-37
Paragraph
Page
5.5' MAIN INTERFACE PORT ............ 5-35
5.6 PRINTER PORT INTERFACE ........ 5-35
5.7 DISPLAY GENERATOR ............. 6-36
5.8 VIDEO MODULE
AND SCREEN ...................... 6-36
5.9 POWER SUPPLY. . . . . . . . . . . . . . . . . . .. 6-36
6.1
6.2
6.2.1
6.2.2
6.3
6.4
6.4.1
6.4.2
CHAPTER 6 OPERATOR MAINTENANCE
INTRODUCTION ................... 6-36
PERIODIC MAINTENANCE ......... 6-36
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-36
Inspection. . . . . . . . . . . . . . . . . . . . . . . . . .. 6-36
TROUBLESHOOTING. . . . . . . . . . . . . .. 6-37
REPAIR ............................ 6-37
Line Fuse ........................... 6-37
PowerSupply Fuses .................. 6-37
List of Tables
Table Page
1-1
Specifications
1-3
2-1
Host Interface Connector Configuration 2-6
2-2
Printer Connector Configuration 2-6
3-1 Monitor Mode Control Characters 3-23
3-2
USASCII Chart
3-24
3-3 Model 950 Cursor Addressing Codes 3-25
3-4
Model 950 Control and Escape Codes 3-26
3-5 Alpha-Numeric Key Hex Codes 3-30
3-6 Cursor Control and Edit Key Hex Codes 3-32
3-7 Function Key Default Hex Codes 3-32
3-8 Local Only Keys 3-33
3-9
Key Action Modifiers 3-33
6-1 Model 950 Troubleshooting Check List 6-37

Chapter 1
GENERAL INFORMATION
1.1
INTRODUCTION
This manual is a reference guide for the TeleVideo Mod-
el 950 Video Display Terminal operator. The informa-
tion presented in this manual will enable a Model 950
user to install, operate, program,
and service the Video
Display Terminal. The manual contains the following
chapters:
Chapter
1. General Information
Chapter 2. Installation
Chapter 3. Operation
Chapter 4. Performance Verification
Chapter 5. Functional Description
Chapter 6. Maintenance
The following paragraphs describe the contents
and
scope of these chapters.
1.1.1 General Information
The General Information describes the Model 950 Video
Display Terminal, its features, and its applications.
In
addition, it provides general safety precautions, lists
documents related
to the terminal, and lists the
terminal's mechanical and electrical specifications.
1.1.2 Installation
The Installation chapter provides detailed procedures
for unpacking
and inspecting the Video Display Ter-
minal, interconnecting it to a host computer, and setting
up operating parameters. It also includes procedures for
installation checks.
1.1.3 Operation
The Operation chapter contains detailed procedures for
operating the Model 950.
It includes instructions for
turning the terminal
on and off and controlling and pro-
gramming its many special features.
1.1.4 Performance Verification
The Performance Verification chapter contains proce-
dures for checking the terminal in all its operational
modes using the self-test feature.
1.1.5 Functional Description
The Functional Description chapter describes the overall
functional operation
of the terminal based on a system
simplified block diagram.
It also describes the functional
operation
of the major circuits in the terminal, also based
upon simplified diagrams. The information contained
in this chapter provides the Model 950 user with
an
overall perspective of the terminal hardware.
1.1.6 Maintenance
The Maintenance chapter provides preventive mainte-
nance instructions and simplified procedures for troub-
leshooting terminal faults.
It also contains procedures
for repairs most terminal users can make.
1.2 PRODUCT DESCRIPTION
The TeleVideo Model 950 Video Display Terminal is a
compact state-of-the-art
"smart" terminal that provides
high level performance
at low cost. This terminal is com-
patible with most host computers and finds a wide vari-
ety
of applications in the end user environment. Stan-
dard features include editing capabilities, protected
field, addressable cursor, line and character
insert/ de-
lete, upper
and lower case characters, and tabbing. In
addition, the Model 950 provides the following standard
features:
Split screen with line lock
Etched
CRT face to reduce glare
Programmable function keys
(11 keys with 22
functions)
15 special graphics characters
On-screen status (25th line)
Buffered auxiliary
port
14 x 10 character resolution
Attractive cabinet styling
Detached keyboard
Light weight for portability
Typewriter-styled keyboard
Dedicated editing keys
Maximum serviceability
Self test
1.2.1 Additional OEM Features
The Model 950 provides the original equipment manu-
facturer with several customizing features that include
Easy keyboard reconfiguration
Easy character reconfiguration
Reconfigurable firmware for Escape sequence
changes
Readily adaptable to packaging changes
Easily repainted keyboard
and CRT bezels, and
cabinet
Easily replaced
CRT's with differing phosphors
Accepts a variety
of CRT color filters
Maximum serviceability
1.2.2 Options
The Model 950 may be ordered with several options that
enhance its already comprehensive list
of features. These
options, available
at additional cost, include
48 line memory that can be organized by the user in
either one 48-line page
or two 24-line pages
96 line memory that can be organized by the user in
one 96-line page, two 48-line pages,
or four 24-line
pages
Integral
modem/ dialer
1.3 SAFETY PRECAUTIONS
As with any electronic equipment, precautions con-
sistent with all standard safety practices must be taken
while servicing the Model 950 Video Display Terminal.
Any servicing
that requires opening the cabinet must be
performed by qualified service personnel. Prior to in-
spection or service, power must be disconnected.
Notices are included throughout this manual to alert the
reader
to problem areas or situations that could cause
personnel injury, loss
of data, or hardware damage.
A WARNING statement precedes the text
of a procedure
1-1