Datapoint 3300 User manual

Datapoint 3300 / Instructions

TABLE OF CONTENTS
Introduction ............................. 1
Compatibility ............................ 2
Outstanding Features
...................... 2
Unpacking
............................. 2
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2
Keyboard
Familiarization. . . . . . . . . . . . . . . . .. 3
Special Coded Keys ............ ... ....... 3
Cursor
Control Keys. . . . . . . . . . . . . . . . . . . . .. 5
Adding Machine
Format Keyboard .......... 5
Remote Operation
....................... 6
Space Overwrite Modes (SPOW) . . . . . . . . . . . .. 6
Back Control Panel. . . . . . . . . . . . . . . . . . . . .
.. 7
Optional Features. . . . . . . . . . . . . . . . . . . . . . .. 8
Interface Specification ................... .10
Signal Characteristics
..................... 10
Pin Assignments
......................... 10
High Speed Operation .................... 10
Code Assignments
....................... 11
Warranty .............................. 12

INTRODUCTION
Computer Terminal Corporation made an
intensive st udy of the needs of the remot e,
timesharing co mputer users and th e fea-
tures
that were desired in a data te rmin a l.
Th e r esu lts - Datapoi nt 33 00.
Advanced elec tr onic engin ee ri ng, hand-
some styli
ng, compact si ze plus co mp a tibilit y
w
it h all timesharing se rvi ces d esc ribe th e Dat a-
point 3300 .
Th is Operator's Ins tru ction Manual h as been
pr
epa r ed to acq ua int you , the opera tor, wi th all
of th e operating features of the Datapo int 33 00 .
If you are fam iliar w i
th th e Mod el 33 tele-
type terminal, th en a phaseover to th e Data-
po
int 330 0 will be ve ry s imple . If you have
never u
sed an e ntr y data termina l, then pl ease
take the tim e and r ead this manual co mplet ely.
By so doing you sh ould have a full und er-
standing of all the opera
ting func ti ons of the
Datapoi
nt 3300 . In th e eve nt we have fa iled to
explain any func ti on to your sa tisfaction and
understanding
or if you have any question s,
pl ease, feel free to contact you r local sa l es r e-
pr ese ntative.
1

COMPATIBILITY
The Da tapo int 33 00 is a stand -a lone te r min al,
c
om pletely c omp at ible wi th all T im es ha rin g
se rvi ces that c ur r en tl y su ppo rt terminals using
th e USA Standard Code for In fo rm at ion Inter-
chan ge (ASCII). The int erface of the Datapoint
33 00 was de sign ed to conform to th e El ec-
tr onic Industri es Associat ion (EIA ) RS -2 32 -B
standard; therefore, it is c omp at ible with ali
Bell Sy
ste m, or eq uivale nt data se ts and most
acousti ca l c ouple r s.
OUTSTANDING FEATURES
There are two memor ies in the Data poi nt 33 00
A R ea d On ly Memory (ROM), and a Circula-
t ing Memory. Bo th m emor i es are of th e Metal
Oxide Silico n (MO
S) typ e. Th e use of MOS
memori es is a major con tr ibutor to th e s ma ll
size of th e Datapoint 33 00 . Th e ROM is u se d
as the char ac ter ge nerator and th e Circulating
Memory se r ves to refr es h th e display sixty
times
eac h seco nd. T he refr es h rate is syn-
chroniz ed to the p owe r lin e; therefore,
flicker is elimin C1 t ed .
A n ot her contr ibut or to the stab le displ ay
found on th e Datapoint 3300 is t he CRT de-
fl ection system. Th e sca n is not a T V typ e
I- as ter sca n. T he CRT is sca nn ed horizo nt ally
only on
ce pe r char ac ter l in e, or 25 t im es pel-
frame rather than 525 t im es per fr ame as
fou nd in TV tape sca n systems. Thi s sca n sy s-
tem developed by Co mp ute r Terminal Corpor a-
li on al lows the sc r ee n to be refr es hed at the 60
cycle
sy nchronous rate.
UNPACKING
Th e Dalapoi nt 33 00 h as b ee n ca ref ully p ac ke d
to ensure its safe
ty during sh ipm e nt; however,
th e terminal should be ca refully inspected as
soon
as it is re moved from its shippi ng con-
tainer. In th e eve nt th at damage h as occur ed ,
i mm ed iately fi le cla im again st th e ca rri er and
notify Co
mput er Termin al Corporation, 9725
Datapoi nt Dr ., Sa n A ntonio, Texas 78229 or
ca ll (512)-696-4520.
INSTALLATION
The Datapoint 33 00 is slyl ed Lo be o ff ice com-
pa t ible. B ase dimensions are the sa me as com-
monly
ava ilable Executi ve typewr iters; ther e-
fore, the uni t fits on any typew riter tab le or
d
es k.
2
Th e installation of the Datapoint 3300 is ve ry
si mp le; only 11 5 VAC and Cl modem or data
coupler of yo ur choi ce is re quir ed. Th e choi ce
of the da ta se t to be u se d depends upon the
baud rate.
Th e 103 type data se t is reliable up
to 2 00 baud; however, with special tuning the
103 h as be en use d su ccess fully at 3 00 baud.
The telephone c
omp any or da ta se t ve ndor
should be consulted a bout th e lO 3's u se above
2 00 baud. Th e 202 typ e da ta set is n ecess ary
fo r da ta rat es above 3 00 baud. For initial
operation th e fo ll ow ing is requir ed :
1. Pl
ace the p owe r sw i tc h on the Data-
point
33 00 to the OFF pos it ion.
2. Place the LOCA
L/R EMO TE sw it ch to
th e LOCA L posit ion.
3. In
se rt t he power cord int o the recepta-
cle on the rear pa nel of t he Datapoint 3300 and
conn
ec t to a 11 5 VAC wal l plug.
4. Select a data coupler or data set which
has an EI A RS -232-B inte rf ace and will operate
at the b
au d ra te at which the termi na I wiII be
u
sed . U se a stan da rd RS-232-B ca ble to con-
n ec t th e terminal La the coupler.
5. Se t th e baud rate sw itch on th e b ac k
control panel to th e corr ec t sp ee d se tting .
Note th e sp eed se tt in g is de term in ed by the
speed limitat ions of the T im
es hari ng or c om -
mun i ca tion se rvi ce be ing u sed . (S ee Page 7).
6. Set
th e DUPLEX sw itch on th e back
co ntr ol panel to th e proper se tt ing, FULL or
HA L
F. This is al so determined by th e Ti m e-
shari ng se rvi ce being use d. (See Page 7).
7. All
ow appr ox imate ly one minu te fo r
the
CR T fil ame nt to wa rm up, then pl ac e the
power switch in the ON posit ion. T he blinki
ng
cur so r shou ld a pp ea r in the first ch aracter posi-
t ion. If th e cu rsor does n ot app ea r on t he
sc r ee n wi thin 15 seco nds depr ess the H OME UP
key. If the cu rs or st ill does n ot appear, tur n the
term in al O FF i mm ediate ly and co nt act you r
se rvi ce man.
CAUTION
Do not lea ve th e terminal ON if the
cursor is not visible.

KEYBOARD FAMILIARIZATION
Th e Datapo in t 33 00 is si mp le to operate, sin ce
a standard or universal keyboard is used. You
shou ld h ave no d iffi cu lt y in acqu irin g typ ing
speed on
ce "keyboard conf i de n ce" is a tt ained.
To enable
you to practice, place the powe r
sw
it ch to the ON position and the mode
sw i tch to the L OCA L position .
You wi ll noti ce th at the characters on the CRT
screen arrange themselves from l eft to right wi th
a total of 72 characters p er line and 25 lin es.
As th e 64th character in a line is keyed, an _
audible "b eep" will be heard, alerting you t hat
you are com i ng to the end of that line. As you
comp lete the l as t, or 25t h lin e, the first line at
the top of t he sc re en wil l " ro ll up" and di sap-
pear; it will in turn be replaced by what was
the second lin e, etc. Th e max imum numb er of
lines that ca n be displayed is 25.
Depress each
of the standard alphan umeric keys
and
verify that the proper character is displayed
on t he
sc r een . As you depr ess a key, the charac-
ter is immediately displayed on the CR T screen
wi
th no distracting noise. Th e 3300 is truly
noi se l ess.
SPECIAL CODED KEYS
Th e Datapoint 3300 has othe r exceptio nally
useful featu
res designed into it th at are con-
troll ed by t he fol l owing keys.
BACKSPACE -Depressing this key causes
the c ur so r to move back one space. If this
key is coded as a shifted "0" the back arr ow
will n ot be displayed.
HERE IS - This key starts the Answer-Back
and
wil l cause the Answer-Back message to be
p rirlt ed on the screen.
NOTE
If the termina l is n ot fi tted w i th an
Answer-Back, nothing wil l occur
when
th e HERE IS is depressed.
3

ESC -D ep r ess ing this key ca u ses an octal 0 33
to be tr an sm itt ed (control-shi ft " K" ), unl ess
Co mput er T ermin al Corpor atio n is directed to
code it o th erw i se , and no vi sua l di sp lay occurs.
LINE FEED - Th e LI NE FEED key will cause
th e c ur so r to move dow n one line pos iti on unti l
the c ur s or r eac h es th e bo tt om line. When th e
cur
so r is on th e bo tt om line, the key will ca u se
th e text to roll up one line eve ry time the key
is de
pr esse d. In ad diti on to the visu al indi ca tio n,
th is key ca u ses the Stan da rd A SC II line f eed
code to be tr an sm itt e d.
RETURN -D ep r ess ing this key tr ansmits the
Standard ASCII
ca rriage ret urn code and
c
aus es th e cu r so r to ret urn to th e fir st char-
acter pos
it ion of th e line being pri nte d.
CTRL -Depr ess ing thi s key in conjunc ti on
wi
th a ny o th er key con ve rts the pa rti cular code
generated i
nt o a control code. Co ntr ol cod es do
not
ca u se a ny visible display. A control " G"
(BELL) will cause an audible "b eep ".
RUBOUT - Th e RUB O UT key ca u ses an all
"on e' s" co de to be tr ans mitt e d. Th is code is
usu a lly int erpreted by th e computer as a " no-
o
p" cod e. No visual di sp lay occurs wh en this
key is d
ep r esse d.
4
REPT -De pr ess i ng thi s key in co njun ction
with any o th er key causes a repe titiv e code to
be tr ansmi tt ed at a 7.5 characters per sec ond
rate.
Th e tran sm itt ed code is de te rmin ed by
th e key that is depr essed in add iti on to th e
REPT key.
BREAK -De pr ess ing the BREA K key c au ses
th e ou tput line to go to an all sp ac e condi-
ti on. This is us ual ly In terpreted by th e com-
put er as a pro gram ex it comman d. No visual
indi ca ti on is apparent.
SHIFT -When ei th er of the two s hift keys IS
depressed in co njun c ti on w i th anot he r key, t he
upper case character indi ca ted on th e part i cu lar
key is tran sm i tt ed and p rint ed .
CAUTION
Keys not having an upper case
character sho wn on th e key should
_ not
be u se d w i th a shift key d e-
pr essed . A n e rron eous code will oc-
cu r, thus, pr inting an ill ega l char-
acter.
NOTE
X ON (Q key), X OFF (S key) and
BE
LL (G key) are co ntr ol charac-
ter
s, N OT s hift ed character s.
1
~
,
~

CURSOR CONTROL KEYS
The ei ght cu rsor contro l keys are located on
the extreme ri ght side of the keyboar d. Th ey
consist
of the four di rectional ARROWS,
ERASE EOF, ERASE EOL, HOME UP and
HOME DOWN .
Th e fo ur di re c tional arrows cause the cursor to
move on the sc r ee n in the di rection indicated
on t
he key. Holdi ng the k ey down for mo re
than appr
ox imately 1.5 seconds causes the
movement to repeat unt il the key is released.
Th e ERASE EOF key causes the screen to be
cleared fr om the cursor positio n to the end of
the frame .
T he ERASE
EOL key causes t he port ion of
the line from the cursor posit ion to the end of
that line to be erased
T
he HOME UP key places the cursor in the
fi rst character, f irst line posit ion In orde r to
cl ear th e comp lete sc r ee n, depress the HOME
UP and then the ERASE EOF key.
Th e HOME DOWN key places the cursor in
the first character, last line position of the
scree
n.
Unless the coded cU l'sor key opt ion is incor·
porated in a pa l'li c ular lel' minal, the cursor
controls will not tl 'ansm it a character and
cause no ac
tion othe l' lh an loca l cursor move·
ment. ( See Option al Features, page 8 ).
ADDING MACHIN E FORMAT KEYBOARD
For those accustmned to using adding ma ·
c hin es, or when large amou nt s of num eri ca l
data is to be enter ed int o the compute r, the
addi ng machine for' mat keys are espec ial ly use ·
fu I.
Th e adding machine fo rmat keys do not i nter ·
tere w i th the opel'a ti on of the standard numer ·
ical keys, locat
ed on the top row of th e key·
board.
5

REMOTE OPERATION
The remote mode is the on-Iine mode of the
Datapoint 3300. The terminal shou ld be
placed in the remote mode before telephone
contact is made with the computer. 0 nce tel e-
phone contact is made wi th a computer and
the terminal is
in the remote mode, each coded
key
wi ll transmit its code to the output line
when the key is depressed. Note that the Data-
point 3300 is an interactive terminal; therefor e,
each character is transm i tted as the key is de-
pressed . The operation of the keyboard in the
remote mode
is identical to that describ ed a-
bove under " Local Operation." The one excep-
tion being that the output and input int erface
is
now acti ve.
I'
~ "
. ;w
rE!m
6
SPACE OVERWRITE MODES (SPOW)
Ther e a re two SPOW modes, automatic and op-
tionaI
SPOW latc h. The automatic mode is
standard and provides for the inhibiting of the
destructive
space if a carriage return is received
w
it hout a line feed. Thi sa ll ows two point s of a
graph
to be plotted on the same line when the
second po
int is farther out on the ax is than the
first. Also,
it will a ll ow a question and blank to
be wr itt en a nd then the ca rriage returned and the
question
spaced over to fill in the blank.
Th e optional SPOW latch shou ld be used in
conjunction with coded cursor opt io n. This will
al l ow the computer to wr it e a complete form
on th e screen and then set th e SPOW latch by
send i ng a contro l "N".The cursor may be
"homed up" a nd the operator co uld space over
the
form to fill in the blanks w ithout destroy-
ing the form. When the form is co mplete, a
cor-ltrol "0" and a Line Feed rel ease th e SPOW
latch. The space once aga in becomes destructive.

-~ . ~ - . ......
DUPLEX
BAUD '
RATE
\
2400
-110
FULL
HALF
SET
600
440
.t
300
-880
150
1760
RECORDER
MOD
3300T 115 VAC
60 Hi
SER . NO .
Back Control Panel
7