Texas Instruments 770 User manual
f
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Operating
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far
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----
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I
DATA
TERMINAL
MANUAL
NO.
993023-9701
ORIGINAL ISSUE
30
JUNE
1977
INCLUDES
CHANGE 1 . .
...
1
JANUARY
1979
TEXAS
INSTRUMENTS
INCORPORATED
--
•
INTRODUCTION
You are about to learn how to operate the Texas Instruments Model 770 Intelligent Data
Terminal.
Even
if you have no previous experience in data processing
or
data terminal
operation, you should find the Model
no
easy
to
learn and
S1m'ple
to operate.
Operating the Model 770
is,
in fact, very similar
to
operating a standard electrictypewriter.
Differences between the
two
are
not
theactionsthatyou
-:-the
operator-will
take, but
w_hat
the 770 does in response
to
your
actions. Forinstance, whenyoutypeonthekeyboard
of
the
770,
the key strokes are converted toelectronicsignalsthatin addition
to
beingdisplayedon
thescreen
or
printed
for
you
to
see locally, mayalsoberecordedonmagnetictapecartridges
for later recall and use,
as
well
as
transmitted over communicationJines to be received and
printed
or
viewed by other operators
or
even computers.
Butthat is
not
all -the 770 alsohastheability
to
tellyouwhen
to
enter
(or
type) information,
what information
to
enter, and onceyou have completed the entry, whether
or
not
thereare
any errors in the information that you have entered. That is
how
the 770
got
the name
"Intelligent Data Terminal"!
ABOUT
THIS
MANUAL
A~
you
continue
your
familiarization with the Model no, you will primarily
be
interested in
Sections
I,
11,
and
Ill
ofthis
manual: Familiarizationwiththe770, Operatingthe770, andCare
and Cleaning.
If
other
equipment is
to
be
used with the
no,
then Appendix E - Attaching
External Equipment -should be studied.
A~endix
D - Installation is included primarily
as
reference material
for
those people
who
unpick
and complete initial installation
of
theequipment. Additional reference information
is also provided in the remaining Appendix sections.
TABLE
OF
CONTENTS
sectior1 I. Familiarization With The no
Paragraph Page No.
Introducing the
770
................................................
1
Locating the Controls·
...............................................
1
Attaching the Power Cord
........................•...................
3
Switching Power On and
Off
..........................................
3
Adjusting Brightness
of
Video Display
...................................
3
Using the Data Cartridges
............................................
3
Loading Paper
.........................................•..........
5
Locating the Keyboard and indicators
...................................
8
Typewriter Keyboard . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Shift and Upper Case Lock Keys
.......................................
9
Enter, Char, Field, and Tab Skip Keys
..................................
10
Control,
ESC,
and Return Keys
..............•........................
10
Numeric Keypad
.................................................
11
Function Keys
....................................•......•.......
11
Special Operation Keys
.............................................
11
Printer Control
_Keys
.............................•..............
11
Repeat Key . . . . . . . . . . . . . . . . .
...............................
12
Erase Field, Erase Input, Ins Char, and Del Char Keys
....................
12
Cursor Control Keys
..•.......................•.............•...
12
Indicators . . . . . . . . . . . . . • • • • . . . . . . . • • . . . . . . . . • • • . . . . . . . . . . . . . . . . . 13
Section II. Operating
The
no
An Introduction . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . 14
Data Entry and Error Correction
.......................................
14
How to
Begi.n
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
~
Start-Up Procedure
.....•......................................
15
How
to
Enter Data in a Field
.•....................................
16
How to Enter Data in a Form
......................................
24
Moving Around
............................................
26
Editing
..•...............................................
27
Terminating
...............................................
27
Terminal Command Mode
...........................................
29
Understanding Files and Programs
.................................
29
How to Use Terminal Command Mode
...............................
32
What You Can Do in Terminal Command Mode
........................
35
Set Time and Date
..........................................
35
Start a Program
............................................
36
Stop a Program
............................................
37
Restart a Program
...........................•...............
38
Load a Program
............................................
38
Program Status
............................................
39
Delete a Program . . . . . . . . . . . . . . . . . . . . . . . .
...................
40
System Clear . . . . . . . . . . . . . . . . . . . . . . .
.......................
41
ii
\
Section
Ill.
Care and Cleaning
Cleaning the Video Display Screen
....................................
43
Cleaning the Tape Unit Head
........................................
43
Cleaning the Outside Surfaces
.......................................
44
Cleaning the Thermal Printhead
....................•.................
44
Adjusting Thermal Printer Contrast
....................................
44
Appendix
A.
Terminal Command Mode -Reference
Appendix
B.
Terminal Command Mode -
System Error Messages
Appendix C. Specifications
Appendix D. Installation
Space Requirements
...............................................
51
Terminal Assembly
........
~
.......................................
51
Initial Power Application
...................•....•..•......•.........
52
Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Thermal Printer Test
...............................................
54
Appendix E. Attaching External Equipment
Appendix F. Cable Pin Assignments
Appendix G. Keyboard Graphics and Control Characters
Appendix
H.
Keyboard Cross Reference
-Unlabeled Characters Generation
iii
LIST
OF
ILLUSTRATIONS
Figure No. Title Page No.
1-1
Model 770 Intelligent Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
1-2 Terminal Front View
......................................
2
1-3 Terminal Rear View
.......................................
2
1-4 Data Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1-5 Cartridge Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1-6 Cartridge Seating
........................................
4
1-7 Cartridge Removal
.......................................
4
1-8 Cartridge Write Protect Tab
.................................
5
.
3-1
Tape Unit Head Cleaning
.................................
43
3-2 Print Contrast Adjustment
.................................
45
C-1
Terminal Dimensions
....................................
50
D-1
Terminal
Base
Unit
......................................
51
D-2 Self Test Patterns
.......................................
53
E-1
Terminal Communications Ports
............................
56
E-2 Configuration Cable Connections
...........................
57
G-1 Control Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
G-2 Graphic Characters
......................................
65
LIST OF TABLES
Table No. Title Page No.
Terminal Command Mode Error Messages
.....................
47
C-1
Terminal Specifications
...................................
49
E-1
Option to Configuration Cross Reference
......................
55
F-1
103/113 Data Set Cable P/N 993204-0001
......................
59
F-2 202/212 Data Set Cable P/N 993205-0001 . . . . . . . . . . . . . . . . . . . . . .
59
F-3 201/801 Data Set Cable P/N 993206-0001
......................
60
F-4 CBS1001F Coupler (DAA) Cable P/N 993207-0001
................
60
F-5 Leased-Line Cable P/N 993208-0001
..........................
61
F-6 Data Terminal Cable P/N 993210-0001
........................
62
F-7 MC 810 Cable P/N 993230-0001
.............................
63
iv
TAPE UNIT
NO. 1
WITHOUT
·THERMAL
PRINTER
TAPE
UNIT
NO. 1
WITH
THERMAL
PRINTER
/
Figure 1-1. Model no Intelligent Tennlnals
vi
VIDEO
DISPLAY
TAPE UNIT
N0.2
VIDEO
DISPLAY
KEYBOARD
SECTION I
FAMILIARIZATION
WITH
THE
770
Introducing the 770
The Model
770
terminal thatyou will beoperating lookslikeone
of
thetwo terminalsdepicted
in Figure 1-1. You will want
to
be familiar with the major parts
of
the terminal. Here
is
an
introduction.
Either type terminal,
as
you can see, includes the following major parts:
• Keyboard -The keyboard is very similar
to
the keyboard
of
a standardtypewri!er.
You will type on
it
in essentially thesame way you would
type
on a typewriter
keyboard.
• Video Display-When you
type
onthekeyboard
of
the
770,
thecharactersyoutype
will normally appear before you on the screen
of
the video display. Also,
messages
for
you
to
read and
instructions·for
you will appear here.
•
Two
Tape Units -These
two
units are used in
conjunction
with DataCartridges
to
save information that may be needed
for
use at a later time. The operation is
very similar
to
recording sound on a tape recorder and playing
it
back later.
You,
as
an operator, will primarily be concerned with the installation and
removal
of
the data cartridges used with the tape units. You may want
to
note
for
later reference that:
Tape
Unit
No. 1 is on the left side
as
you face the video display, and is
sometimes referenced
as
CTG
1.
Tape
Unit
No. 2 is on the right side
as
you face
the
video display and is
sometimes referenced
as
CTG2.
Some 770's are equipped with an additional part:
• Thermal Printer -The
printer
is
normally
used
to
obtainapermanentrecord
of
the
information
displayed on the video display screen.
Now
that you have been
introduced
to
the major parts
of
the 770, let's take a little more
in-
depth
look
at the terminal.
Locating the Controls
The main controls for the terminal are shown in Figures 1-2 and 1-3.
TAPE
CARTRIDGE
EJECT
BUTTON
BRIGHTNESS
CONTROL
TAPE
CARTRIDGE
EJECT
BUTTON
THERMAL
PRINTER
CONTRAST
ADJUSTMENT
ADJUSTS
THE
BRIGHTNESS
OF
THE
VIDEO
DISPLAY.
RELEASES
THE
TAPE
CARTRIDGE
FROM
THE
TRANSPORT
TO
ALLOW
REMOVAL
BY
HAND.
ADJUSTS
CONTRAST
OF
THE
THERMAL
PRINTER.
Figure 1-2. Terminal Front View
POWER SWITCH
TURNS
TERMINAL
ON
AND
OFF.
PROTECTS
TERMINAL
FROM
DAMAGE
BRIGHTNESS
CONTROL
THERMAL
PRINTER
CONTRAST
ADJUSTMENT
POWER SWITCH
AC
LINE
FUSE
AC
LINE
FUSE
COMMUNICATION
PORTS
POWER
CONNECTOR
CAUSED
BY
DRAWING
EXCESSIVE
CURRENT.
TERMINAL
CONNECTION
POINT
FOR
PERIPHERAL
DEVICES.
CONNECTION
POINT
FOR POWER CORD.
Figure 1-3. Terminal Rear View
2
Attaching the Power Cord
Locate the
three-prong
recessed Power
Connector
at the rear
of
the terminal
as
shown in
Figure 1-3. Now, plug the three-socket female
connector
of
the
power
cord
into
the three-
prong
recessed Power
Connector
of
the
terminal, and plug the
three-prong
male
connector
of
the
power
cord
into
a 115
volt
ac wall outlet.
Switching Power On and Off
As shown in the Figure 1-3, the
power
switch is at
the
rear
of
the
terminal and isaccessible
to
your
left hand when you are facing
the
video display.
If
the 770 is plugged
into
the ac
power
line,
you
can
turn
the
power
on by depressing the
top
half
of
the
power
switch
(marked ON).
Once the
power
has been
switched
on,
you
can
turn
the
power
off
by
depressing
the
lower
half
of
the
power
switch
(marked OFF).
Adjusting Brightness of the Video Display
Turn
the
power
on
as
previously described.
About
thirty
seconds
after
the
power
has been
turned
on, a message
should
become visible in the
lower
left hand
corner
of
the
video
display.
Another
message
will
appear in
the
lower
right
hand
corner
of
thevideo display. Do
not
be
concerned
with
what
the
messages say at this
time
-
they
will
be discussed in detail
later.
Locate the Brightness
Control
knob
(Figure 1-2)
just
below
and
to
the
right
of
the
video
display. Rotate the
knob
as
far
as
it
will
go
first in one
direction
andthen in the
other
direction
noting
the change
this
produces
in the
contrast
between the characters in the message and
the
screen itself.
Note
that
at
one
extreme, theentire
background
of
the
screen is
illuminated
and at the
other
extreme
the
characters in the message are
no
longer
visible
(nothing
is
illuminated).
The
Brightness
Control
should
now
be adjusted so
that
the characters in the
message are illuminated,
but
the
background
is not. There is considerable range in this
adjustment; therefore,
you
should
pick the brightness setting
that
is most pleasing
to
you.
(Remember
to
avoid
the
extremes at
either
end
of
the
range.)
Using the Data Cartridges
The
two
tape units in the 770 use a data
cartridge
like the one shown in Figure 1-4.
You
received
a
cartridge
labeled
OPERATOR
TRAINING
packaged
with
these
Operating
Instructions.You mayuse
the OPERATOR TRAINING tape,
or
-
if
you wish -any
similiar
data cartridge
from
Texas Instruments,
to
complete
the
following
activities.
Figure 1-4. Data Cartridge
3
Take
the
data
cartridge
in
your
hand and
slide
it
into
tape
unit
No. 1 as
illustrated
in Figure
1-5. Press
cartridge
as
shown
in
Figure
1-6
until
it
is
firmly
seated.
Figure 1-5. Cartridge Insertion Figure 1-6. Cartridge Seating
The
data
cartridge
is released
by
,pressing the
cartridge
eject
button
adjacent
to
the
data
cartridge
as
shown
in
Figure
1-7.
Figure 1-7. Cartridge Removal
Now
repeat
the
operation
with
tape
unit
No. 2
4
These data cartridges, Figure 1-8, provide the storage facility
for
the terminal. Data entered
into the
770
can be written on acartridge
for
storageand laterrecalled intotheterminal when
required.
A movable tab on the cartridge is used to protectthe data on atapefrom inadvertently being
destroyed. This tab, marked RECORD,
is
positioned
as
shown
to
eitherprotect
or
not
protect
the data already on the tape. In some cases, the tab may be completely removed in orderto
permanently protect the stored data.
(CARTRIDGE
ROTATED
FOR
CLARITY)
=
II
RECORD
ii.
I Ij
WRITE
PROTECT/RECORD
ENABLE
TAB
DATA~
DATANOT
PROTECTED~
PROTECTED
Figure 1-8
..
Cartridge Write Protect Tab
Loading Paper
Ifthe terminal
is
equipped with theoptional thermal printer, refer
to
thefollowing figures and
load it with paper (if required)
as
follows:
CAUTION
The warranty
and/or
service contract on the thermal printhead
issubject
to
nullification
if
thethermal paperused does
not
meet
Tl
Specification 972603-0001.
\
1.
Slide the printer access
door
up
to
provide access
to
the paper loading area.
----~ACCESS
DOOR
ALUMINUM
ROLLER
PAPER SUPPORTS
5
2.
Remove the
empty
paper roll, if present.
If
the paper
supply
is almost exhausted,
tearthe paper where it enters the paper
chute
and remove the paper roll. Verifythat
the
terminal
power
switch is ON and press
the
PAPER ADV key (third key
from
left,
second row on keyboard)
to
remove the remaining paper from the printer.
3.
Graspanewroll
of
papersothatthepaperfeeds
off
the
bottom
of
the
roll towardthe
front
of
the terminal and place the roll on the paper supports.
4.
Grasp both corners
of
the
end
of
the paper and
gently
pull
up
about
6 inches
of
paper.
5.
Feed the paper over the
aluminum
roller
and
down
the paper chute until it can be
seen behind the window.
6
NOTE
The paper will not slide
under
the printhead because the
printhead is pressed against the platen.
6.
Press and
hold
the PAPER ADV key whilesimultaneouslypushing
the
papergently
down
the paper chute. The paper will feed
under
the printhead and then
under
the
window/pinch
roller.
WINDOW/
PINCH
ROLLER
PRINTHEAD
7.
Hold
the
paper
out
of
the way and slidethe
printer
access
door
down
until it almost
touches the platen.
8.
Tear
off
excess paper by
pulling
forward over the tearoff edge
of
the window.
9.
When the
printer
is being used, theprinted
output
is fed
under
thevideo displayand
to the back
of
the terminal.
7
ACCESS
DOOR
Locating the Keyboard and Indicators
The keyboard provides the means by which you will enter data
into
the terminal. While
studying, you may type on the keyboard, however, even
if
power
is ON the characters typed
will not necessarily be displayed on the screen.
How
to display typed characters on the
screen will be explained when actual operation
of
the terminal is explained in detail in
Section
11.
Ifyou wish
to
use
the
actual keyboard in
conjunction
with thissection, there is no
need to have power ON.
1-UNCTION
KEYS
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SPECIAL
OPERATION KEYS TYPEWRITER
KEY80AR0
NUMERIC
KEYPAD
As you can see, the keyboard resembles a conventional
typewriter
keyboard with some
additional special keys and indicators. As
shown
in
the
figure, the keyboard is divided
into
five separate sections. These sections are:
• Typewriter Keyb0c rd
• Numeric Keypad
• Function Keys
• Special Operation Keys
• Status Indicators
Let's look at each section in a little
more
detail.
Typewriter Keyboard
Most
of
your
interaction
with
the
770
will
beviathe
typewriter
keyboard. Notethesimilarityto
a standard typewriter
highlighted
here.
·--
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8
As you can see, the alphabet, numeric, symbol, and punctuation keys are arranged like a
standard typewriter.
UIASE
~
~
flELD
~~
808
080
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.SHIFT and UPPER CASE LOCK
Keys
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808
080
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CTG-2
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You will use theSHIFT key(s) in the same manneron the 770 thatyou
would
on atypewriter.
Ifyou pressone
of
thealphabet keys (A
through
Z) while holdingaSHIFTkey depressed, you
will generate upper case characters (i.e., capital letters). Taking the same action
without
holding the SHIFT key depressed will giveyou lowercase characters.
If
you pressone
of
the
"two-function"
keys (those with
two
labels onthem) whileholdingtheSHIFTkey depressed,
you will generate the character
or
function appearing on the upper half
of
the key top;
otherwise (i.e., unshifted), you will generate the character
or
function identifiedon thelower
h~lf
of
the keytop.
The UPPER CASE LOCK key is aspecial locking key.
If
you havethis key locked in thedown
position, you will always generate
upper
case (capital) letters when
typing
on the alphabet
keys. You cannot generate
lower
case letters when the UPPER CASE LOCK key is locked in
the down position.
Only
the letters
"A"
through
"Z"
are affected by the UPPER CASE LOCK
key.
9
ENTER, CHAR, FIELD, and TAB SKIP
Keys
808
080
r,;;'\o~
e~,
e:.,
0 0 0 0
-.1
lJIIC
ftn
~
0 0 0 0
I..
...
CTG-1
CTGJ
~mmmrnmmmmrnmm
□
oa
000
!(•-••J1@~000000®088(•w)
000
r--l00®0@000~OOCD
000
G00000®@CDCJCDG
G:JO
These keys are importantspecial control keys used indataentry.TheCHAR and FIELD keys
are used to correct entry errors and the
TAB
SKIP and ENTER keys are used
to
signifythe
end
of
an
entry
or
set
of
entries. You will be instructed in the exact use
of
these keys in
Section II.
CONTROL, ESC, and RETURN Keys
§§§
808
080
@Os
000
000
000
~CJ
As
an
operator, you will normally
not
be concerned with using the CONTROL. ESC and
RETURN keys. They are used
only
for
rare applications that need special
control
characters
to be generated.
Further information on the use
of
these keys is contained in Appendix G and Appendix
H.
10
Numeric
Keypad
~
OJ
m
GJ
m
rn
mm
rn
rn
mm
CJ
oB
8@J
~
0 0
00@JCD@J
0 8 8 (·--l
r--)00@J0@®00~OO
CD
G00@J00®@0CJGJG
0~0
000
CD00
~o
The numeric keypad is provided
for
your
convenience when entering numerical data.
Function
Keys
§§§
808
080
§0§
(§GJGJGJ(I)GJGJGJffiWWGJCJOB
8@)
~
0 0
00@)
(D@J
0 8 8
(---)
l-l0®00@000~OO
CD
G
00@00®@0
CJGJ
G
000
000
000
~o
The function keys perform special operations.
The
key assignments and usage
will
be
explained in Section II.
Special Operation Keys
Printer Control Keys
(§ mmmm
rn
mm
rn
rn
rn
CD
CJ
os
8@J~
0 0
00
®
CD@088
(··--)
(-J0000@JC~J00~OO
C:::
J
G00@00®®00GJC-:J
000
[~00
000
[o
JO
When the terminal is equipped
with
the optional thermal printer, you can use the PRINT key
to
cause the data displayed on the screen
to
be
printed
on the
printer
and the PAPER ADV
key to line feed the printer.
11
REPEAT Key
ERASE~~
PIELO
~~
801B]
080
§0§
~ ~
~
"
~
~
r-;;-'\
~\
~
COMM•HO
~ ~
l
Dl!UT£
J At:STAAT
1~
~
~
~
~
CANCEL
0 0 0 0
IOLE £Xf.C TEST
COMM
0 0 0 0
ERR
11\JSY
CT<M CTG 2
~mmmmrnmmmrnmmoos
000
8@®000000@088
1-1
000
(-,.·000000000~0008
000
G00@000@GJCJCJG
~
□
If
you press and hold the REPEAT key while momentarily depressing another key, the
character
or
action denoted
for
the second key will be repeated approximately five times
every second until the REPEAT key is released
or
another character key is depressed.
ERASE FIELD, ERASE INPUT, INS CHAR, and DEL CHAR Keys
IIIASE
~
~
Fll!LO
~~
808
080
~n~
~L_)~
~ ~
~
..
,7.7
,.--;;--)
~
/7.7
~
~
~~~RESTART~~~~~~
0 0 0 0
IDLE
EXIC
TUT
COMM
0 0 0 0
Utll
.......
CTQ.1
CTG·l
~mmmmrnmmmrnmmoos
000
8@®000000®08ffi("'ruM)
000
[~~·)00000000~0000
000
G00@000@GJCJCJG
~
□
These keys can be used
for
correcting input errors.
Their
use is explained in Section II.
Cursor Control Keys
~
,.--;;--) ,--;;---'i
/7.7
,7.7
,.--;;--)
~
/7.7
~
COMM•NO
~~~~~~~~~
CANCEL
ss@
~mmmmrnmmmrnmmoos
8@®
0 0
00
0
0@0
8 8
[•nu••)
(-,.
..
J00000000~00L::.:
l
G00@000@GJCJCJG
0 0 0 0
UR
BUSY CTG·1
CTG•l
000
000
000
!0]0
This set
of
keys is used primarily in program development rather than data entry. You will
normally
not
be required to use them. They are used
to
control
input
position on the video
display.
12
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