Tektronix 4661 User manual

1
1
1
TEKTRONIX
R
4661
DIGITAL
X
- Y
PLOTTER
OPERATORS MANUAL
Tektronix , Inc.
P.O.
Box
500
Beaverton , Oregon 97005
Serial
Num ber
070-1804-00
First Print ing JULY 1974

I
WARRANTY
All
TEKTRONIX
products
are
warrant ed
against
defective
m at erials and workm anshi p for one year . Additionally ,
TEKTRONIX
Com put er
Term inals
,
Calculat ors
and relat ed
peripheral
equipm ent are
fully
warrant ed
against
any
trouble for
the
first 90
days . Any
equipm ent trouble
occurring
to those
TEKTRONIX products during the 90 day period will be repaired
by TEKTRONIX
personnel
at no
charge . Questions
regarding this
warrant y
should
be
discussed
with
your
TEKTRONIX
sales
representat ive
.
Specificat ions
and price
change
privileges
reserved
.
U.S.A.
and foreign
TEKTRONIX
products
covered
by
U.S. and
foreign
pat ents
and / or
pat ents
pending .
TEKTRONIX
is a
regist ered
t radem ark of
Tektronix , Inc.
Copyright 
1974 by
Tektronix , Inc.
, Beaverton
, Oregon .
Print ed
in
the
Unit ed
Stat es
of
Am erica . All
rights
reserved . Cont ents
of
this
publicat ion
m ay not
be
reproduced in any
form
without
perm issi on
of
Tektronix ,
Inc.

4661
Operat ors
TABLE OF CONTENTS
SECTION 1
INSTALLATION
Page
Int roduct ion
Installat ion
1-1
1-1
SECTION 2
OPERATION
Front
Panel
Descript ion
Operat ing
Instructions
Set
- up
Operat ions
Rem ot e
Operat ion
Dat a
Input
Dat a Plot t ing Area
Off
Scale
2-1
2-2
2-2
2-4
2-5
2-6
2-6
1
SECTION 3
SUPPLEMENTAL INFORMATION
1
I
Cleaning and Servicing
Cleaning the Plot t er Plat en and Case
Cleaning the
Air Filter
Lubrication
Plat en Ali gnm ent Procedure
Changing
the
Plot t er
Address
Power
Requirem ent s
Power
Consum pt ion
Line
Volt age
Changes
Fuses
Physical
Characteristics
Standard Accessories
Opt ional
Accessories
3-1
3-1
3-1
3-2
3-4
3-4
3-5
3-5
3-6
3-6
3-6
3-6
3-7
A

Fig . 1-1 . 4661 Digit al X - Y Plot t er .
4661
A

4661
Operat ors
Sect ion 1
INSTALLATION
INTRODUCTION
INSTALLATION
NOTE
The 4661 ( Fig . 1-1 ) is a digit ally stepped and controlled
X - Y Plot t er which int erfaces with either the Tektronix 21 or
31 Calculat or to provide graphic display of Calculat or
com putat ions on a
variety
of
paper types . The
paper
is
held in
place on a
plat en by
electrost atic
at t ract ion ;
writing
is
accom plished
by
a
nylon -
tipped
pen .
Do not operat e the Plot t er unless it is connect ed to
an
energized
Calculat or .
General
Installing the Plot t er consists basically of select ing the
proper line voltage , connect ing to a power source , and
inst alling the int erconnect ing cable to receive signals
from the
Calculat or Input /
Out put
Connector .
Rem ot e Com m ands from the Calculat or allow dat a
plot t ing
in
any
com binat ion of
two m odes -
Absolut e
Dat a
or Relat ive Dat a ; X dat a m ust be entered prior to Y dat a . In
the Absolut e Dat a m ode , values are referenced to Plot t er
Zero and the pen will m ove to the com m anded posit ion
with reference to Zero . In the Relat ive Dat a m ode , values
are
referenced
to the
present pen
posit ion
and the
pen will
m ove the
com m anded
distance
from
that
point
.
Dat a m ay
also be plot t ed at one - half the issued axis value , in either
or
both
axes .
Use either the standard int erconnect ing cable
( supplied with the Plot t er ) or one of the opt ional int er
connect ing
cables
to
connect the
Plot t er to the
Calculat or
.
The Plot t er is shipped for operat ion in the 110 VAC range ;
inf orm at ion on changing the line voltage select ion , to
accom m odat e ot her ranges , is found in Sect ion 3 .
Installat ion Procedure
1. Install one end of the int erconnect ing cable int o the
Calculat or Input / Out put connect or , taking care to align
the tabs on the cable end with the slots on the connect or
guide (
tabs facing
upward ) . See
Fig .
1-2 .
Plot t er Zero ( coordinate value X = , Y = ) can be
est ablished at any point on the plot t ing surface by Rem ot e
Com m and or by
front panel
control
,
for
operat ion in
one ,
two or four m at hem at ical quadrants . This allows posit ive
or negative X and / or Y values to be plot t ed . Rem ot e
Com m ands from the Calculat or also allow for lifting and
lowering the
pen .
PX
Each axis of the plot t er is driven by a 4 - phase stepping
m ot or ; the
pen bug is
m oved on
the X and
Y axes
shaft s by
plast ic - covered cables pulled by the m ot or pulleys . Each
m ot or step results in .005 " of linear m ot ion in that m ot or’s
axis .
Fig . 1-2 .
Calculat or
peripheral
connect ion .
A
1-1

Installat ion -
4661 Operat ors
2. Connect the ot her end of the cable int o either of the
Plot t er connect ors , again taking care to align the tabs on
the cable end with the slots on the connect or guide . On the
Plot t er , one guide has the slots on the upper side and one
has the slots on the lower side . ( Figs . 1-3 and 1-4 . )
3.
Term inate the
Plot t er’s
unused
connect or
by inst all
ing the
t erm inator
pack (
Figs
. 1-4
and
1-5 ) ,
unless
Calculat or
signals are
being
looped
through the
Plot t er
to
ot her
devices in the
syst em . If m ore
than one
device
is
being
connect ed
in a
loop - through
syst em , the
t erm inator
pack m ust be
inst alled
on the
out put
of the
device
electronically
farthest
from the
Calculat or
. ( Fig . 1-5
. )
Guides
I
Tabs Tabs
and
Guides
Aligned
Fig . 1-3 . Plot t er connect ion .
Fig . 1-4
.
Plot t er
inst allat ion .
I
CALCULATOR
PLOTTER
LAST
DEVICE
IN
SYSTEM
 
To
Ot her
Devices
TERMINATOR
PACK
Fig . 1-5 . Loop - through connect ion .
1-2
A

Installat ion

4661
Operat ors
4.
Install
the
power
cord in it s
connect or
on
the
Plot t er
rear
panel ( Fig .
1-6
)
and
connect it to
a
suit able
power
receptacle .
WITH THE
FUSE
Power
Connection
Fig . 1-6 .
Power
connect ion
.
1
A
1-3

I

4661
Operat ors
Section 2
OPERATION
FRONT PANEL DESCRIPTION
The m anu al controls and indicators on the 4661 front
panel are described in the following sect ion . The controls
on the front panel are used to set the Plot t er for operat ion ,
prior to the input of dat a from the Calculat or . See Fig . 2-1 .
PEN
Switch .
The
PEN
switch is
a
non
-
lat ching
pushbutton which changes the up / down state of the pen
when pressed . If the pen is down when the button is
pressed , it will be lifted , and vice - versa . The PEN switch
will have no effect if the pen is held up by a Calculat or
generat ed Off - Scale m ove .
POWER
Switch
. The
POWER
Switch
is a
rocker
type .
The power - on cycle causes the pen bug to m ove to the
lower right corner , and est ablishes Zero ( coordinate
values X = , Y = ) near the lower left corner . The POWER
indicator will light when power is applied to the Plot t er .
Manual Posit ioning Switches . There are two sets of
Manual Posit ioning switches , with three non - lat ching
pushbuttons per set . The left - hand set causes pen m ot ion
in the X
Axis , in the
directions
indicated
by
the
arrows
on
the front panel ; the right - hand set causes pen m ot ion in
the Y axis , in the directions indicated by the arrows on the
front
panel .
BUSY Indicator . The BUSY indicator lights when the
Calculat or is com m unicat ing with the Plot t er , or when the
Plot t er is engaged in a m anu al operat ion which activates
the
BUSY
circuit
in
the 4661 (
LOAD
, PEN ,
or SET
ZERO
) .
The BUSY indicator stays on for an additional one second
after each Calculat or - generat ed PEN , SET ZERO , or Move
Operat ion ; this disables front panel com m ands during the
Calculat or’s calculat ion t im e between plot t er com m ands .
The exception to front - panel control disabling is the
LOAD switch ; a LOAD request will be rem em bered and
then recognized one second after the finish of any
Calculat or
-
generat ed
m ove .
The center pushbutton in either set causes fast m ot ion
in the m oving axis , when only one axis is being posit ioned .
When the pen is being posit ioned in both axes
sim ult aneously
,
pressing
either
of
the center
buttons will
cause fast m ot ion in BOTH axes .
SET
ZERO Switch
.
The SET
ZERO
switch
is a
non
lat ching pushbutton which sets the X and Y Zero coor
dinates to
the
current
pen
posit ion .
LOAD Switch . The LOAD switch is a lat ching
pushbutton . When it is locked in , the pen lifts from the
surface , the pen carriage m oves to the right border , and
the electrost atic paper hold is disengaged . The Plot t er will
not respond to Calculat or com m ands while the LOAD
switch is locked in . When the LOAD switch is released by
pressing it again ) , the electrost atic paper hold is engaged
and the Plot t er can again respond to Calculat or com
m ands .
HALF SCALE Switches . The HALF SCALE switches are
two
lat ching
pushbuttons
which enable
the Half
Scale
m ode for either axis or both . In the Half Scale m ode , m ove
com m ands from the Calculat or are plot t ed at one - half the
issued
distance
in
the Half
Scale
axis ( or
axes ) ,
allowing
the Plot t er to accept twice the dat a range from the
Calculat or .
* 88
$ 888
$ 88 2888
ID
Fig . 2-1 . The front panel .
A
2-1

Operat ion - 4661 Operat ors
OPERATING
INSTRUCTIONS
tablished
near
the lower
left corner
(
0.16 " in
from
the X
and
Y Off - Scale boundaries ) , providing first quadrant opera
tion
(
Fig .
2-2 ) .
Set -
up
Operat ions
NOTE
Do not
at t em pt to
operat e
the
Plot t er unless
it is
connected
to
an
energized
Calculat or
.
Applying
Power . Turn
the
Calculat or on , then
push the
Plot t er POWER switch to the right to apply power ; the
POWER indicator will light . The initializing sequence will
bring
the pen to
the right
m argin
where
it
closes
the
X
lim i t
switch , then
to the
lower
m argin
where it
closes the Y
lim i t
switch . Zero ( coordinate value X = , Y = ) is then es
Loading
the Paper
. Push
the
LOAD
button
to
lock it
in ;
the pen
will lift
and m ove
to
the
right
m argin ,
and
the
electrost atic
paper
hold
will be
disengaged
. Rem ove
any
paper
present on
the
plat en ,
and
posit ion a
new
piece
of
paper
on
the
plot t ing
surface .
The
lower
left corner
of
the
paper
m ust
be
posit ioned
at
the
lower
left
corner
of
the
plat en .
The
bottom
edge of the
paper
should
lie
evenly
along
the
paper
guide
(
Fig . 2-3
) .
Press
the
LOAD
switch to
release it from the locked posit ion , activating the elec
trostat ic paper hold . Then sm oot h the paper evenly across
the
plat en
.
15.36 inches
KRONIX
10.24
inches
Off
Scale
Boundary
Initial Zero
0.16
"
1
0.16
"
$ $
SETE
 
  :
$ A $ 3
SEBAST
Fig
.
2-2
.
Initial
Zero
locat ion .
2-2