Control Data Corporation CDC 721 Manual

I":;J 1:\ CONT,,"OL DATA
\::I r::J CO~O~TION
CDC® 721
ENHANCED DISPLAY TERMINAL
62950101
OPERATOR'S GUIDE/INSTALLATION INSTRUCTIONS

'.-'~.-.---.--,
REVISION RECORD
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REVISION DESCRIPTION ,
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(08-03-83 ) I
Manual released. Manual reflects revision 4.0
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'I tenninal finnware.
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I~P-u~b~l~i-c-a~t~i-o-n~N~o-.~I--------------------------------------------------------
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62950101 I
REVISION LETTERS I, 0, Q AND X ARE NOT USED
©1983
by Control Data Corporation
Printed in the United States of Arnerica
ii
Address comments concerning
this manual to:
Control Data Corporation
Publications and Graphics Div.
2401 North Fairview Avenue
St. Paul, Minnesota 55113
or use Comment Sheet in
the back of this manual.

LIST OF EFFECTIVE PAGES
New features, as well as changes, deletions, and additions to informa-
tion in this manual are indicated by bars in the margins or by a dot
near the page number if the entire page is affected. A bar by the
page number indicates pagination rather than content has changed.
PAGE
I REV
PAGE
I REV
PAGE
I REV
Front Cover
Title
Page
WARNING
ii thru xvi
A
1-1
thru
1-6
A
2-1
thru
2-10
A
3-1
thru
3-12
A
4-1
thru
4-21
A
5-1
A
6-1
thru
6-23
A
A-I
thru
A-37
A
B-1
thru
B-19
A
Comment Sheet A
Mailer
Back Cover
62950101
iii/iv

PREFACE
---.-.---.-~---.-.-.-----.--.--.-----.-.-.-- .. -.----.--.-~-.-.----
This manual contains operating and installation information for
the CDC® 721 Enhanced Display Terminal. This information is
for the operator of the terminal and the person who installs
it. The 721 Enhanced Display Terminal may be either an:
• Enhanced production model (known as a CC634-B or CC638-B
Display Terminal)
• Earlier built model (known as a CC634-A or CC638-A
Display Terminal) with an enhanced firmware option
installed (the option is known as the YR109-A Enhanced
Firmware Option)
The operating information provided specifically covers how to
operate the terminal in CYBER mode. That mode is for operations
with CDC CYBER computer systems such as those of the 120 or 170
series. This is accompanied with general information such as:
• A general description of the terminal
• A description of operator controls and indicators
• How to start up the terminal and run its self tests
• Instructions on cleaning the terminal
• Error recovery and fault isolation procedures and
information on how to turn in terminal components to a
CDC repair service center
This general information is to supplement manuals which cover
the operation of the terminal in other than CYBER mode.
The installation information covers the procedure for installing
the terminal and checking it out for operation.
62950101
v

The following lis·t of associated manuals is divided into groups
which cover the enhanced model terminals and the original model
terminals.
ASSOCIATED MANUALS FOR ENHANCED MODEL TERMINALS:
Title
Publication Number
721 Display Terminal Unpacking/
Packing Instructions
721 Enhanced Display Terminal Reference
Manual
721-101 1200/1200 Baud Modem
Hardware Installation Instructions
(applicable to enhanced production
model terminals only)
721-220 Graphics Board
Hardware Installation Instructions
(applicable to enhanced production
model terminals only)
ASSOCIATED MANUALS FOR ORIGINAL MODEL TERMINALS:
721 Display Terminal Operator's Guide/
Installation Instructions
721 Display Terminal Unpacking/
Packing Instructions
721 Display Terminal Reference Manual
All manuals may be ordered from:
vi
Control Data Corporation
Literature and Distribution Services
308 North Dale Street
st. Paul, Minnesota 55103
62940038
62950102
62950119
62950118
62940019
62940038
62940020

CONFIGURATION SHEET
This sheet is for keeping a record of the optional features installed in
your display terminal. To fill out this sheet, refer to the Equipment
Identification (ID) labels on the rear panel of the terminal. These
labels are shown below, however, not all may apply and be on your
terminal.
THIS HALF OF LABEL
CONTAINS THE EQUIP- ~
MENT AND SERIAL
NUMBERS OF THE ~ l~ ~
TERMINAL ~
t;rt •• ~··
THIS HALF OF LABEL LISTS ~: ---------------- I
EQUIPMENT NUMBERS OF SERVICE- 1--------. ~ '.
CENTER INSTALLED FEATURES ~
AND OF USER-INSTALLED KEYCAP ~
AND POWER CONVERSION KITS
PLUS USER-INSTALLED MODEM
AND GRAPHIC BOARDS
Serial number of the terminal is
(check the one that is applicable):
NOTE
n
@
~II
'I I ~ EACH USER-INSTALLED
INTERFACE BOARD HAS
AN ID LABEL HERE ON
INSIDE FLANGE OF ITS
COVER PLATE. THAT LABEL
LISTS THE EQUIPMENT
NUMBER OF THE BOARD
and its equipment number is
The CC634-A and CC638-A model terminals
listed below are assumed to have the
later listed YRl09-A enhanced firmware
option installed. If you have a CC634-A
or CC638-A terminal that does not have
that option, you should not use this
manual. Instead, you should use the
operator's guide/installation instruc-
tions manual that is listed in the
preface for the original model terminals.
CC634-A or CC634-B, which has no factory-installed
optional features
CC638-A or CC638-B, which has optional graphics board and
touchpanel installed at factory
62950101
Service-center installed features include (check if applicable):
XA358-A graphics board and touchpanel
XA369-A touchpanel
YRl09-A enhanced firmware option (applicable only to
CC634-A or CC638-A model terminals)
User-installed features include (check if applicable):
XA360-A 1200/1200 baud modem*
XA368-A graphics board*
YRlOl-A dual asynchronous-interface board
YRl02-A parallel-interface board
YA274-A United Kingdom keycap kit
YA274-B Spanish keycap kit
YA274-C German keycap kit
YA274-D French keycap kit
YA274-E Swedish/Finnish keycap kit
YA274-F Danish/Norwegian keycap kit
YA275-A power conversion kit
*These items are user installed in the CC634-B and CC638-B model
terminals only.
vii

This portion of the configuration sheet is for recording installation parameter entries in case reentry becomes
necessary. The applicable spaces provided below are to be filled in by the person who installs the terminal. This is
covered in appendix A. The values listed immediately below each entry point of a parameter entry field are factory
preset (or default) values.
TERMINAL INSTALLATION PARAMETER ENTRIES
F CON FIG F CON FIG F CON FIG F CON FIG F AS
x Y F L I D F P 0 R T A F P 0 R T B
Fin s t 1
CC634-A/B
CC'638-A/B
2 -
o 0 0 0 0 0
3 _- ____ _
o 0 000 0 4
_- _____ ,
o 0 000 0 5 -
~O-O~O~O"""-="O -O~'
6 -
"':""O---=O--O~'
7 - - - - - 8
o 000 0
-----,
o
o 6 6
9
-----,
A
A 6
6
10 mod e n
o 1 000 0
------
o 0 100 0 000000
o 0 0
------
o 0 0 000
------
------ ------ ------
MODE INSTALLATION PARAMETER ENTRIES
MODE 1
CYBER
FiC 0
2 -
~O~O~O~O -O~'
N FIG
------
F CON FIG F CON FIG
3 - 4 - -
o 0 0 1 1 0 ~O-O~O~O~O~O
------ ------
F CON FIG
5 - - 0
o 1 0 0 0 0
FOP R D F
6
-4~C~0~4-
----
o 0 000
----
FA-DIAL
FA-DIAL
7 -
"='O-O~O~O~O-O~'
8 -
o 0 0 0 0 0
------
F DF T R F
ACe E S S
9
10 - - - -
-0-0--6---
6 £Q.Q.£
MODE 2 F CON FIG F CON FIG F CON FIG F CON FIG FOP R D F F A - D I A L F A - D I A L F DF
PLATO
T R F A C C E S S
2 - - - - - -
100 100
3 - 4 - - - - - -
Q..2..2.'!'_Q. .2..2..2..2..2._
5 - - - - - 0 6
o 0 0 0 0 0 -~6-C--2~4-
------ ----
7 - - - - - - 8 - - - - 9--
,-----
o 0 0 0 0 0 0 0 0 0 0 0 08 6 6
------ ------
10, __ -_-_-_-_,
o 0 0 0
----
MODE 3 F
CON FIG F CON FIG F CON FIG F CON FIG FOP R D F F A - D I A L F A - D I A L F OF T R F
Ace E S S
2 - - 3
_- _____ , 4 - - - - - -
1 0 0 1 0 000 100 o 0 000 0
------
MODE 4 F CON FIG F CON FIG
2 - - - - - - 4 - - - - - -
.2..2..2..2.Q._
5 -
-----,
o 0 0 0 0 0
FCONFIG
5 - - - -
o 0 0 0 0 0
------
6, ____ ~
6 C 2 5
FOP R D F
6_~~~_
6 C 2 4
7 - - - - - - 8 -
000000 o 0 000 0
FA-DIAL
FA-DIAL
7 - - 8 -
o 0 0 000 o 0 000 0
------
------
9 --
00
F DF
6
T
6
R
9, ____ _
00 6 i
10 _____ ,
o 0 0 0
F A C C E S S
10 - - - -
o 0 0 O·
----
MODE 5 F CON FIG F CON FIG F CON FIG F CON FIG FOP R 0 F F A - D I A L F A - 0 I A L F OF T R F Ace E S S
2 - - 3 - - - - 4 ~-_~~~~,
£.!.~.2. lQ.Q.Q.Q.Q. Q.Q.Q.Q.Q.Q. Q.Q.Q.Q.Q.Q.
5 - 6
o 0 0 0 0 0 '-~4~4-2~~
------
7 - - - - - - 8 - 9 _____ ,
Q. Q. Q. Q. Q. Q. Q. Q. Q. £ Q. Q. 00
9 9
10 _-_-_-_-_,
000 0
MODE 6 F CON FIG F CON FIG F CON FIG F CON FIG FOP R D F F A - D I A L F A - D I A L F DF T R F A C C E S S
2 - - - -
o 0 000 0 3 -
-0---0 -O~O-"'O-O
------
4 - - - -
Q.Q..2.Q.Q.Q.
5---- 6_~ __ -..._
Q..2.Q.Q.Q.Q. ££Q.Q.
viii
7 -
":"O-O~O-"'O~O-O~'
------
8 - - - 9, ____ _
. 0 0 0 0 0 0 00 0 0
------
10, __ -_-_-_-_,
£Q.££
62950101

NOTE
The following information is repeated
later in this text in English.
Das " Display Terminal " ist fUr eine Betriebsspannung
von
120 V
220/240 V
konstruiert.
50/60 Hz; 1.3 A und
50/60 Hz; 0.71 A
Die erforderliche Netzumschaltung wird an der RUckseite nach
Losen der Schraube am Netzumschalter vorgenommen.
Das NetzanschluBkabel ist mit einem Schutzkontaktstecker versehen.
Auf richtige Netzspannung ist zu achten, da im anderen FaIle das
Gerat zerstort wird.
Die Netzwandsteckdose ist unmittelbar und leicht zuganglich, in
der Nahe des Gerates zu montieren.
Netzschalter:
Der Netzschalter befindet sich an der Frontseite.
Stellung gedrUckt -0 - AUS
Stellung gedrUckt -I - AN
Der Geratesicherungsautomat an der RUckseite, ist durch
Eindrucken zu betatigen.
Weitere Bedienungseinrichtungen fur
Reset
Kontrast
Helligkeit
befinden sich an der Frontseite.
62950101
ix

Nach Einschalten der Netzspannung dauert es ca. 15 Sekunden bis
der Bildschirm aktiviert ist.
Das Offnen des Ger§tes ist nur von qualifiziertem Fachpersonal
nach Abschalten der Stromzufuhr zum Ger~t, vorzunehmen.
Beachten Sie die Wartungs- und Garantiebestimmungen.
Umgebungstemperatur:
Temperaturwechsel:
10°C innerhalb 1 Stunde
Relative Feuchtigkeit:
20% bis 80%
Gewicht:
inkl. Keyboard - 21.8 kg
Weitere Informationen entnehrnern Sie dem Ger§te - Manual CDC Nr:
62 95 01 01
x 62950101

CONTENTS
1. GENERAL DESCRIPTION AND OPERATOR SUPPLIES
Overview • . • • •• •••••• •.••• 1-1
Standard Features .•. . .• ...•.••.••• 1-2
Optional Features •••••• •.••.•••• 1-4
Specifications • .. ..•••••.•.•••.•• 1-4
Electrical Specifications • • •• ••••.••• 1-4
Environmental Specifications • .• • 1-5
Phys ical Speci fica tions •. ••...•• •• 1-5
Operator Supplies •• . • • • • . • • . . . • • • • • . 1-5
2. OPERATOR CONTROLS AND INDICATORS
Controls • . • . . • • • . • • • • • • • • • 2-1
Indicators •• ••• •• • • • • . •• ••• 2-2
Alarm . • . . . •. •• • • • . • • • . . • • • 2-4
Keyboard • • • . . • . • • • • • • • • • • • • • • • • • 2-5
Keycap Configurations . • . . • • • • • • • • 2-5
Keyboard Operating Characteristics . . • • • • • • • 2-8
Optional Touchpanel • • • • • • . • • . • • • • • • 2-9
Positioning Adjustments ••••••. • • • • • 2-9
3. STARTUP AND SELF TESTS
Starting Up Terminal • . • • •
Running Self Tests • . • • • • • • •
Operator-Intervention Test
Cyber-Mode Test • . . . . .
• • • 3-1
• • • • 3-6
• • • • 3-6
• . • . • • . 3-10
. . . . . . . . . 3-10
• • • • • • • • 3-10
• • • • • • 3-10
• • • • • • • • 3-11
Host Initiated CYBER-Mode Test .
Locally Initiated CYBER-Mode Test
Installing Memory Module •••••.
Replacing Battery • • • . • • • • • . •
4. OPERATING IN CYBER MODE
Operator Parameters • . • • • • • . • • • • • • • . 4-1
Protected Screen Positions • • • • • • . • ••••••• 4-5
Normal Protection Mode • •• •.•••••. 4-6
Automatic-Tabbing Protection Mode . . • • • • • • • • 4-6
Character/Block-Transmit Modes • . • •• •••••• 4-6
Character-Transmit Mode •. ... ....•. 4-6
Block-Transmit Mode • . • . •• .•. 4-7
Keyboard Functions • • . . • • • • • • • • • • • • • • • 4-8
Altering Keyboard Entries . ••.•••••••• 4-9
Shi ft Keys • • • . . • • • • . • • •. ••• • 4-9
Lock Key • • . • • • •• •••••••••.• 4-9
CTRL Key . • •• ••• • • •• •• 4-9
62950101
xi

Entering Special Symbols. • • • . ·
4-10
Mov ing Cursor . . . . . . . • . . • ·
4-14
Tabbin.g • • • . • • • •• .•..•.•
• • • . • 4-16
Editing • • • • . • • . . •. .••
• ••.• 4-17
Controlling Communications and Printing . • . • . • • 4-19
Host Controlled Functions .•....••
• 4-19
5. CLEANING TERMINAL
Cleaning Keyboard ••••.
Cleaning Cabinet and Screen
5-1
• • 5-1
6. ERROR RECOVERY/FAULT ISOLATION
Error Recovery/Fault Isolation • • • . • . • • • •
Turning in Components to a Repair Service Center •
Preparing Basic Terminal Unit for Turn In • • •
Preparing Keyboard for Turn In • . • • •
Preparing Optional Board in I/F I through I/F 3
for Turn In •••••• • • . • • •
Accompanying Information • • • • . • • • . • •
APPENDIX
· 6-1
· . . 6-1S
• 6-19
6-22
• 6-22
· • • 6-23
A. INSTALLATION AND CHECKOUT
Installation Considerations • • • • .
Required Tools and Supplies ••. .•••
Terminal Preparation • . • • • • • • • • •
Board Installation in I/F I through I/F 3
Cable Installation . . • • . . • . • • . .
• • • • • A-I
• • • A-2
· • • A-2
• • • • • A-4
Ini tial Power On • . . • • • • • . • · • •
A-5
•• A-S
Parameter Entries • • • •
Checkout . . . . . • • . . • • • . • • . • • •
CRT Realignment without Touchpanel Installed .
CRT Realignment with Touchpane1 Installed
• • • A-9
• •• A-2S
• A-32
· • . A-35
B. 1200/1200 BAUD INTERNAL MODEM
xii
General Description • . . • • • • • • . • • • • • . • • B-1
Oper a tion . . . • • • . • • • • . . . • . • . • • . • • B-3
Entering a Telephone Number on the Terminal Keyboard B-4
Monitoring a Telephone and Starting a Load . • . B-5
Calling a Telephone Number without Loading •. • . • B-S
Manually Dialing a Telephone Call . • • • • • •. B-9
Using Auto-Answer Mode •• • . . • • . • • • B-9
Installation . • • • . • • • • • • . • . • • • • •• B-I0
Connecting Modem-Equipped Terminal to Telephone Line B-I0
Installation Parameter Modification . • • • • • • • • B-12
62950101

FIGURES
1. GENERAL DESCRIPTION AND OPERATOR SUPPLIES
1-1
1-2
Tennina1
· . .. . . . . · . . . .
1-1
Terminal Dimensions
· • . 1-6
2. OPERATOR CONTROLS AND INDICATORS
2-1 Terminal
Controls
· · · · · ·
2-2 Tenninal Indicators
· · · · · · · · · · ·
2-3 Keyboard
with Standard
Keycaps
· · · · ·
2-4 Keyboard
with
United
Kingdom Keycap Options
·
2-5
Keyboard
with French Keycap Option
· · · · · ·
2-6
Keyboard
with
German
Keycap Option
· · · · ·
2-7
Keyboard
with Swedish/Finnish
Keycap
Option
2-8
Keyboard
with Danish/Norwegian
Keycap
Option
·
2-9
Keyboard
with
Spanish Keycap
Option
· · ·
2-10
Optional
Touchpane1
· · · · · ·
2-11 Positioning Adjustments
· · · ·
3. STARTUP AND SELF TESTS
Checking TEST Switches .•••.••...•.
Failure Messages for Power-On Test .
Mode Menu • • • . . . • . • • . • .
· ·
2-1
· ·
2-3
·
2-5
· ·
2-6
· ·
2-6
·
2-6
·
2-7
· ·
2-7
· ·
2-7
2-9
·
2-10
· • 3-2
• 3-3
• 3-4
3-1
3-2
3-3
3-4
3-5
3-6
3-7
Operator-Intervention Test Display • . • . • . • •
3-7
Key Values Shown During Test .••.
Installing a Memory Module . • .
Replacing Battery • . • . .
4. OPERATING IN CYBER MODE
4-1
First Set of Operator
Parameters for CYBER
Mode · . . . . . · · · · · · · · · · ·
4-2
Second
Set of Operator Parameters for
CYBER
Mode · . . . . . · · · · · · · · · · ·
4-3
Function/Special Keys that
Start Block
Transmission
· · · · · · · · ·
4-4 Keys Whose
Functions May Change
· · · · ·
62950101
· · ·
· · ·
· · ·
· · ·
• 3-9
• 3-11
· 3-12
·
4-2
·
4-5
·
4-8
·
4-8
xiii

6. ERROR RECOVERY/FAULT ISOLATION
6-1 Removing Optional I/F 1 through I/F 3 Printed-
Circuit Boards • • • • • • •• ••••••• 6-20
6-2 Packing Basic Terminal Unit • • •• • 6-21
6-3 Packing Keyboard • • • • • • • • • • • • • • • • • 6-22
A. INSTALLATION AND CHECKOUT
A-I
A-2
A-3
A-4
A-S
A-6
A-7
A-8
A-9
A-lO
A-II
A-12
Connecting Keyboard Cable ••••• • • • • • . • A-3
Installation of Boards in I/F 1 through I/F 3 •• A-S
Host Communications Via External Modem • . • • • • A-6
Host Connnunications Via Direct Cable • • • • • • • A-7
Associated Asynchronous-Communication Peripheral • A-7
Associated Parallel-Interface Graphics Printer • • A-7
Accessing Power-Cord Receptacle • • • • •• • A-8
Terminal Installation Parameters (6 Sheets) . A-12
Mode Installation Parameters (9 Sheets) ••••• A-19
Estimating Required Realignment • •• .• • • A-33
Realignment Entries .•• • . • • •• .••• A-34
Display-Alignment Pattern for Use with
Touchpanel ••••••••••••.••••• A-37
B. 1200/1200 BAUD INTERNAL MODEM
B-1 View of Terminal Showing I/F-4 Slot • • • • • • . B-1
B-2 Auto-dialing Display Messages . . • . • • . . B-6
B-3 Telephone-Line Extension Cord with Duplex-Jack
Plug . • • • . • • • • • • . • • • •. • • B-ll
B-4 Installing a Modem-Equipped Terminal . . • • . • • B-13
B-S Completed Installation of Modem-Equipped
Terminal .•••••• •••••••••• B-14
B-6 Operator Controls on Front and Rear of Terminal • B-16
TABLES
2. OPERATOR CONTROLS AND INDICATORS
2-1
2-2
Function of Controls •
Meaning of Indicators
• 2-2
• • 2-3
4. OPERATING IN CYBER MODE
xiv
4-1
4-2
Operator Parameters for CYBER Mode • • • . • • • • 4-2
Correlation Between Conventional Characters and
Line-Drawing Symbols •••••• • • • • • • • 4-11
62950101

4-3
Correlation Between Conventional Characters and
Special
Symbols
· · · . . · · · · ·
4-12
4-4 Moving
Cursor
· · · · · · · ·
4-14
4-5
Tabbing Functions
· · · · · · · · · ·
4-16
4-6 Editing Functions
. . · · · . . · · · · · · ·
4-17
4-7
Controlling
Conmunications
and
Printing
· · · · ·
4-19
6. ERROR RECOVERY/FAULT ISOLATION
6-1 Power Problems . • . • . . • . . • • . . • 6-2
6-2 Power-On Test Problems . . • • . • . . . • 6-3
6-3 Host Loading Problems ..• • . • • • 6-4
6-4 Memory-Module Loading Problems • • 6-6
6-5 Operator-Intervention Test Problems . • . • • 6-7
6-6 Display Problems • • . . • • • • . • • . • 6-10
6-7 Keyboard and Touchpane1 Problems . . . • • • . • • 6-14
6-8 Printing Problems .. . . • • • • . . •• .• 6-16
A. INSTALLATION AND CHECKOUT
A-I Problems Possibly Caused by Improper
Parameters ••••••••.•••. • • • • • A-29
62950101
xv/xvi

GENERAL DESCRIPTION AND OPERATOR SUPPLIES
1
.----------.----~--.---~.-~,----------------.- --~-----
This section gives an overview of the terminal, summarizes its
standard and optional features, and lists its specifications and
operator supplies.
OVERVIEW
The terminal (figure 1-1) is a versatile input/output device that
may be configured in a communications network, be connected via
telephone line to a remote computer, or be cabled directly to a
local computer. The terminal may also be locally configured with
a character printer or graphics printer. The data displayed by
the terminal can be in the form of alphanumeric characters
(domestic or foreign) and/or graphic symbols or drawings.
Figure 1-1. Terminal
62950101 1-1

The versatility of the terminal results from the available
optional features and the capability of loading operating-mode
programs into t~rminal memory. Such programs can be loaded from
the host computer or from a memory module (read-only memory
pack) plugged in the back of the terminal. These capabilities
are also supplemented by a permanently stored (resident) program
that enables operations inCYBER mode. CYBER mode is for
operating with CDC CYBER computer systems such as those of the
120 or 170 series.
Many operating characteristics of the terminal are determined by
selectable parameters. Parameters are initially selected during
installation and are stored in nonvolatile memory.* These
parameters condition the terminal for the operating modes to be
used and the communication facilities at the site.
The parameters stored in nonvolatile memory can be changed if
necessary, but only by qualified personnel (such as the
personnel who install the terminal). Certain parameters,
however, can be temporarily changed without making changes to
nonvolatile memory. These temporary changes may be made by
either the operator or the host after the terminal has been
placed in the operating mode.
STANDARD FEATURES
The standard features of the terminal include:
• Tiltable display with a 380-mrn (15-in) cathode-ray tube
(crt) and low-glare faceplate
• Programmable display set of 256 symbols including 95
domestic alphanumeric characters, 32 control-code
symbols, 1 special parity-error symbol, 32 line-drawing
symbols, 32 foreign language characters, and 64 special
symbo'ls or 64 host-loaded symbols
*Nonvolatile memory provides permanent storage. The memory for
parameter storage is nonvolatile because it receives power from
a battery when terminal power is off.
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• Display format of 80 or 132 characters per line with 24
or 30 display lines
• Display cursor that may be an underline or a block and
may blink or be steadily illuminated
• Page or roll display
• Programmable character positions that may be blanked,
dimmed, underlined, protected, blinking, be in inverse
video (dark characters on light background), or any
combination
• Detached keyboard that can be placed in a flat or tilted
position
• Resident programs for operating in CYBER mode, for self-
test diagnostics, and for loading other operating-mode
programs. The loading of other operating-mode programs
may occur from a memory module or from a host that uses
ASCII* communications such as the Control Data Shared
Network
• 64K of random-access memory (RAM) for loading and
operating memory
• Parameter selection made via keyboard with parameter
storage in nonvolatile memory
• Asynchronous RS-232-C/CCITT V.24** host interface with
selectable receive/transmit speeds up to 19 200 bps
• 120-V ac, 60-Hz operation
*ASCII is an abbreviation of American Standard Code for Infor-
mation Interchange, which is the type of coding used by the
Control Data Shared Network.
**RS-232-C is the Electronic Industries Association standard for
signal interchange between data terminal equipment and data
communication equipment. CCITT V.24 is a comparable European
standard.
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OPTIONAL FEATURES,
Optional features of the . 'terminal include:
• Graphics feature for full-vector graphic displays
• Touchpanel (requires that graphics feature be installed)
• Internal 1200/1200 baud (bit-per-second) modem with
auto-dial and auto-answer capabilities. Refer to appendix
B for more detailed information on the internal modem.
• Parallel interface for attaching parallel-communication
devices
• Dual serial interface with 'asynchronous RS-232-C/CCITT
V.24 ports for attaching serial-conununication devices
• Power conversion kit for 220/240-V ac, 50-Hz operation
• Keycap kits with United Kingdom symbols, German symbols,
French symbols, Spanish symbols, Swedish/Finnish symbols,
or Danish/Norwegian symbols.
with a CC634-B or CC638-B terminal, all options are user
installed except the touchpanel, which must be installed at a CDC
repair service center. (A number such as CC634-B or CC638-B
identifies the .type of terminal you have and appears on a label
at the rear of the terminal.) with a CC634-A or CC638-A
terminal, all options are user installed except the touchpanel,
the graphics feature, and the internal modem.
SPECIFICATIONS
The next paragraphs describe the electrical, environmental, and
physical specifications for the terminal.
ELECTRICAL SPECIFICATIONS
The electrical specifications for the terminal are:
• 120 V ac, 60 Hz, single phase, at 1.3 A maximum
• With power conversion kit installed - 220/240 V ac, 50 HZ,
single phase, at 0.71 A maximum
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