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

Operat ion  4661 Operat ors
SER
X X
X
88 %
90
983
88 %
8888
VAD
.
Fig . 2-3 . Paper posit ioning .
CAUTION
no
The pen
bug is
delicately
hinged for
freedom
of
m ot ion . Handle it carefully to prevent dam age .
Sett ing Zero . Zero ( coordinate value X = , Y = ) is
autom at ically set near the lower left corner when the
power is applied , but it m ay be changed to the current pen
posit ion by pressing the SET ZERO button or by a Rem ot e
30
com m and from
the
Calculat or . By
sending the pen to
a
part icular point on the plot t ing surface and setting Zero
there , Zero m ay be exactly set at any desired point . This
allows operat ion in any m at hem at ical quadrant , any pair
of adj acent quadrants , or in all four quadrants . Posit ive or
negative X and Y values m ay thus be plot t ed , in various
com binat ions .
FAST
FAST
Manual Pen Posit ioning . The pen m ay be posit ioned to
any
point on the
plot t ing
surface by
using the front
panel
Manual Posit ioning switches singly or in com binat ion
( Fig . 2-4 ) . The
direction
of
m ot ion is
indicated on the front
panel . The center button in either set will cause the pen to
m ove at a fast rat e of 4 inches per second ; the norm al pen
posit ioning speed is 0.16 inches per second ( speeds are
for
either
axis ) .
Fig . 2-4 . Manual posit ioning controls .
A
2-3

Operat ion  4661 Operat ors
Installing
the
Pen
.
Press the
LOAD
button
to lift the
pen
from the
plot t ing
surface and m ove
the pen
carriage to
the
right
m argin
.
Manually
lift
the
pen
bug to
m ini m ize
chances
of
acci dentally
m ark ing on
the
plot t ing
surface .
Rem ove
the pen
( if inst alled
) by
turning it one
- fourth
turn counterclockwise . This will align the tabs on the pen
with the slots on the pen bug , and the pen m ay be rem oved
( Fig . 2-5 ) . Place the pen cap over the tip for storage .
1/ 4 Turn
1
Fig
.
2-6
.
Installing
the Pen .
1/ 4
Turn
I
1
Changing
the
Plot t ing
Scale .
The scale of
either
or
both
axes
m ay
be
changed to
plot dat a
for
the
associat ed
axis
at
one - half the issued axis value , by pressing the HALF
SCALE button for the desired axis or axes . If a HALF
SCALE button is depressed while the Plot t er is busy , the
scale
change
will
occur
approxim ately 1
second
after
the
Plot t er is
no
longer
busy .
Fig . 2-5 .
Rem ovi ng
the Pen
.
CAUTION
Rem ot e
Operat ion
For m axim um pen life , pens should always be
capped when not in use .
1
I
Rem ove the cap from the pen which is being inst alled ,
align the pen
tabs with
the pen
bug slots ,
and
inst all the
pen . Turn
the pen
one -
fourth turn
clockwise to
lock it in
place ( Fig . 2-6 ) . Manually lower the pen bug to rest on the
pen
carriage ; then
push
the
LOAD
button
again to
release
it
from
the
locked
posit ion .
Motors for each axis m ove the pen to the X and Y
coordinate
point issued
by the
Calculat or
through
Rem ot e
com m ands . Rem ot e Com m ands also allow the pen to be
lowered to
the
paper
when
a
line is to
be drawn
, and
lifted
when a line is not desired during pen posit ioning . The
Rem ot e
com m ands
are
generat ed
by the
Calculat or
REMOTE
key and a
two - digit
address ,
either
directly from
the
keyboard , by
Calculat or
program
, or by
regist er
recall .
The Plot t er is connect ed at the fact ory to respond to a " 3 "
in the
tens digit of the
address , and
discussion
in this
m anual refers to Rem ot e Com m ands 30 through 36. The
address tens
digit
m ay be
changed
as described
in
Changing
the
Plot t er
Address
.
I
m ay
be
Changing the Pen Up - Down Stat e . If the pen is down
( on the plot t ing surface ) , it m ay be lifted by pressing the
front panel PEN switch or by issuing a Rem ot e 34
com m and
from
the
Calculat or
.
If the
pen
is
up ,
it
placed on the plot t ing surface by pressing the front panel
PEN switch or by issuing a Rem ot e 33 com m and from the
Calculat or unless the last Calculat or - generat ed m ove
went Off - Scale . The pen cannot be lowered when Off
Scale .
Calculat or " m ove " com m ands are in pairs , with X
com m ands
given
prior to Y
com m ands
.
Rem ot e Y
com
m ands ( Rem ot e 32 or Rem ot e 36 ) start the pen m ovem ent
sequence
,
com bining
with
the last
X
com m and
to
form a
coordinate
point .
Rem ot e
com m ands
and resultant
func
tions
are
list ed
in
Table 2-1
.
2-4
A

Operat ion
-
4661
Operat ors
TABLE
2-1 Dat a
Input
REMOTE
COMMAND
DEFINITIONS
FUNCTION
REMOTE
COMMAND
Rem ot e 30
This
com m and
redefines
zero ( X
= ,
Y =
)
to the
present posit ion of the
pen ,
dis
regarding
values in the
Calculat or
dis
play . The zero locat ion m ay be defined
at any point on the plot t ing surface .
The
Plot t er
accept s
Absolut e or
Relat ive
dat a
from the
Calculat or
display in an X - Y
sequence . The Y
com m and
ini tiates
Plot t er
m ot ion
, and
that Y
value com bines with
the
last X value
to
provide the
coordinate point
to
which the
pen will m ove . When plot t ing in the Relat ive Dat a m ode ,
the X
coordinate is
saved , and
m ay be
com bined with
new
Y
coordinates (
unless
cancelled by
a
new X
com m and ) .
Eit her
value
m ay
be
Absolut e (
referenced to
Plot t er
Zero
or
Relat ive (
referenced to the
pen
locat ion ) . Dat a
m ust be
the
result of
calculat ion ;
therefore
,
the = or )
key ,
m ust be
pressed prior to a Rem ot e m ove com m and . The = or ) key
is not required when dat a results from a calculat ion , from
regist er recall , or when the dat a is zero . Typical Absolut e
and Relat ive m ove sequences are shown below ( the R
indicates the
Calculat or
Rem ot e key ) :
a
Rem ot e 31
This sends an X coordinate from the Cal
culat or display to the Plot t er . The co
ordinat e in the display is defined in
relat ion to the zero locat ion on the
plot t ing surface . Refer to Dat a Input
for furt her inf orm at ion .
SEQUENCE
FUNCTION
5 = R31 , R32
Pen
proceeds
to X = 5 ,
Y = 5 .
Rem ot e
32
( Only
one
=
is required
when
values
are
the
sam e
. )
This com m and sends a Y coordinate from
the
Calculat or
display to the
Plot t er
,
ini tiating a Plot t er m ove . The coordi
nat e in the
display is
defined in
rela
tion to the
zero
locat ion on the
plot
ting surface . Refer to Dat a Input for
furt her inf orm at ion .
Clear Display , R31 , R32
Pen
proceeds
to X =
, Y = .
( = is not
required when
dat a
is
zero
. )
5 )
R31 ,
Clear Display
Rem ot e 33
6
)
R32
This
com m and
causes the pen
to
lower to
the paper , unless the last m ove was an
Off -
Scale m ove .
Values in the
display
are disregarded .
Pen
proceeds
to X =
5 , Y
= 6 .
( Close
parenthesis
used
after
each
different
value . )
Rem ot e 34
This causes the pen to lift from the
paper . Values in the display are disre
garded
.
Clear Display , R31 , R32
Pen
proceeds
to X
= ,
Y =
Rem ot e 35
4
)
0.5 ) R35
,
Clear
Display
R32 ,
Clear
Display
4.5 )
R32 ,
Clear Display
5 )
R32
This
com m ands
sends
a
relat ive
X
co
ordinat e
from
the
Calculat or
display to
the Plot t er . The coordinate in the dis
play
is
defined in
relat ion to
the
pre
sent pen locat ion , not the zero loca
tion on the plot t ing surface . Refer to
Dat a Input for m ore inf orm at ion .
Pen will proceed to the ab
solut e Y values , 4 , 4.5 , 5
and 6 increm ent ing the X
axis . 0.5 " with each Y
value . ( The
relat ive X
value
is
saved
unit
a
new one is
entered . )
Rem ot e
36
Clear
Display
This com m and sends a relat ive Y coordi
nat e from
the
Calculat or
display to the
Plot t er , ini tiating a Plot t er m ove . The
coordinate in the display is defined in
relat ion to the
present
pen
locat ion ,
not the
zero
locat ion on the
plot t ing
surface .
Refer to
Dat a
Input for
m ore
inf orm at ion .
0.5
)
R35
, R36
Pen will
increm ent the
X
and Y axes
0.5 " from
the last
plot t ed
point
.
A
2-5

Operat ion -
4661 Operat ors
Off Scale
Dat a Plot t ing Area
The 4661 has a plot t ing area of 10 inches on the Y axis
by 15 inches on the X axis , with a m argin between this area
and the Off - scale boundaries . A calculat or input of 1.0
inches is int erpreted as a 1.0 inch m ove in the Full Scale
m ode , or as a 0.5 inch m ove in the Half - Scale m ode .
1
The absolut e Off - Scale dim ensions are 15.36 inches on
the X - axis and 10.24 inches on the Y - axis ; zero is set 0.16
inches inside this boundary at the lower left - hand corner
when the
power
is
turned on ( Fig
. 2-7 ) .
When a
Calculat or
com m and would exceed one of the Off - Scale dim ensions ,
the pen
is
lifted prior to
the
m ove , and
rem ains
lifted unt il
com plet ion
of a
subsequent
m ove
that
is
inside
the
Off
Scale boundaries . In addition , a m ove associat ed with
LOAD or Manual Posit ioning , which brings the pen back
within the plot t ing area , will allow the pen to be lowered to
the surface when desired .
.
I
1
o
15.36 inches
I
I
TEKNIX
I
10.24
inches
Off
Scale
Boundary
.
0.16
"
0.16 "
BUSY
.
1
Fig . 2-7 .
4661
Plot t ing area .
2-6
A

4661
Operat ors
Sect ion
3
SUPPLEMENTAL INFORMATION
CLEANING
AND SERVICING
9
Occasional
cleaning
will
preserve
the
appearance of
the 4661. In
addition
,
cleaning the air filter
on the
cooling
fan will im prove air circulat ion and will also reduce the
am ount of dust and foreign part icles entering the Plot t er .
This will , in turn , m axim i ze the life of the com ponents and
reduce the frequency of required lubricat ion . The fre
quency of
cleaning
and
lubricat ion will
vary with
the
environm ent in which it is used , but annual m ai ntenance is
a recom m ended m ini m um .
Cleaning
the
Air
Filter
The cooling fan is provided to circulat e air through the
Plot t er
chassis
to
rem ove heat from
the
electrical
com
ponents . When the filter becom es clogged with ac
cum ulat ed dirt , the
fan
cannot
properly
circulat e
air ,
and
the air
which
is
circulat ed
is
m ore
likely
to
carry dirt
which
can contam inat e the lubricant on the X - axis shaft s .
Therefore , the filter should be cleaned yearly at a
m ini m um
,
and m ore
oft en if
necessary , using
the
following
procedure
:
1. Rem ove the four screws which at t ach the filter
retainer to
the
Plot t er
case
(
Fig .
3-1 ) .
Cleaning the Plot t er Plat en and Case
The
Plot t er
m ay
be
cleaned
by
using
the
following
procedure
:
2. Rem ove the filter and clean it with a m ild solut ion of
liquid detergent ; rinse it in clean water and dry it .
1.
Press the
front panel
LOAD
button
to
m ove the pen
to the right hand m argin ; then turn the POWER switch off
and
disconnect
the
power
cord .
Rem ove
any
paper
present on the plat en .
3. Replace the filter in the retainer ; then secure the
retainer to the Plot t er fram e with the four at t aching
screws .
a
2. Use a cloth dam pened in a m ild detergent solut ion
to
wash the
plat en
.
Abrasive
cleaners
,
such
as
scouring
powder ,
m ust
be
avoided
.
Air Filter Retainer Screws
CAUTION
Abrasive
cleaners
and strong
chem ical
cleaners
m ay
scratch
or
even
rem ove
layers of the thin
insulating
film
on
the
electrost atic
plat en
.
3.
Rem ove
m oist ure and
soap
residue from the
plat en
with a clean , dry cloth .
ON
4. The Plot t er case m ay also be cleaned with a cloth
dam pened in the sam e m ild detergent solut ion and dried
as above .
UED
PROTECTION AGAINST
R
REPLACE ONLY WITH THE
AND RATING OF FUSE
)
Fuse
5. Connect the power cord to the power source . The
Plot t er
m ay
again be
operat ed
norm ally
.
Fig . 3-1 . Air filter retainer screws .
A
3-1

Supplem ent al
Inform at ion 
4661
Operat ors
Lubrication
Plat en
Screws
Plat en and Trim Strip Screws
The
bearings on
which the
axis
cable pulleys
turn are
perm anently
lubricat ed
,
and require
no
periodic
lubrica
tion . In addition , the Y - axis shaft s are supported and
stressed such that lubricat ion is not necessary . The
polished surface of the shaft s should , however , be kept
free from soil . The X - axis shaft s and the pen solenoid shaft
within
the
Plot t er
should be
lubricat ed at
a m ini m um
of
once
yearly ,
but
m ore
oft en
when the
lubricant
on the
shaft s
begi ns to dry
and
solidify , or
when it
becom es
contani m at ed with dust and foreign part icles . Use the
following procedure :
SONRA
WARNING
VO
3:29
Hazardous voltages are exposed when the Plot t er
case
or
plat en
are
rem oved ,
unless
the Plot t er
is
disconnect ed
from
the power
source .
Fig . 3-3 . Rem ovi ng the trim strip .
1. Press the front panel LOAD button to m ove the pen
carriage
to the
right
hand
m argin .
Turn the
POWER
switch
off , and disconnect the power cord ( Fig . 3-2 ) .
3. Lift the
plat en at
the left
bottom edge
, and slide
the
plat en to
the left
unt il it
clears the
pen
carriage , then
lift
slightly
to
expose
the
two wires
which
connect
the plat en
to the High Volt age Connector on the Power Regulator
board .
Disconnect the two
- pin
harm onica
connect or from
the connect or pins , then rem ove the plat en ( Fig . 3-4 ) .
.
.
-TER
BUSY
LOAD (
IN
IN
I
V
High Volt age
Connector
Fig
.
3-2 .
LOAD
button
.
Fig . 3-4 .
High
Volt age
Connector .
1
2. Rem ove the four allen screws which at t ach the
plat en and the 4661 trim strip to the fram e , keeping track of
the
locat ion from
which
the
screws
are
rem oved
( Fig .
3-3 ) .
The screws are of different lengt hs ; not ing their posit ion
will aid in reassem bly . Rem ove the trim strip .
4. Rem ove the six allen screws which at t ach the Plot t er
case to the fram e . Three are locat ed on the front panel , and
three are locat ed at the rear . Rem ove the case and the front
panel
(
Figs
. 3-5
and 3-7 ) .
3-2
A

Supplem ent al Inform at ion  4661 Operat ors
Rear At t aching Screws
8
355
SSSS
Ass 3
wer
sexo
$ 2253638

VOOR
DOSYS M2000
At t aching
Screws
Fig . 3-7 .
Rear
at t aching
screws
.
Fig . 3-5 .
Case
and
front
panel at t aching
screws
.
8. Connect the two - pin harm onica connector in place
on the Power Regulator board , m ak ing certain that the
wires will not int erfere with the axis cables ; then posit ion
the plat en on the fram e ( Fig . 3-8 ) .
5.
There are two X -
axis
shaft s
,
along
which
the pen
carriage m oves horizontally ; one runs along the front of
the Plot t er , and one along the rear . The pen solenoid shaft
runs just in
front of the
forward axis
shaft ( Fig . 3-6
) . Clean
the lubricant and contam inant s from both shaft s with
paper
tissue
or
cloth .
6. Lubricate the full lengt h of all shaft s evenly with
Lubriplat e
A , Type
105 , or
equivalent
( Tektronix
Part
Num ber 006-0617-00 ) . In addition , lubricat e the two ends
of the pen actuat or bar ( Fig . 3-6 ) .
X - Axis Shaft
( Beneath Plat e )
Fig . 3-8 .
Installing
the
High Volt age
Connector
.
Actuat or
Bar
Lubrication
Points
9. Place the trim strip in posit ion at the right - hand
edge , and inst all the four at t aching screws through the
plat en and trim strip ( Fig . 3-9 ) . Align the plat en , following
the
Plat en Ali gnm ent
Procedure
which follows .
Plat en
At t aching
Screws
Yen 82X5R
Solenoid Shaft
X - Axis
Shaft
Fig . 3-6 .
X - Axis
locat ions .
**
0655 *
99584

Plat en At t aching Screws
7. Replace the case on the fram e , and place the front
panel in posit ion on the case . Install the at t aching screws
( Figs . 3-5 and 3-7 ) .
Fig . 3-9 .
Installing
the
Plat en and
trim
strip .
3-3

Supplem ent al Inform at ion  4661 Operat ors
Plat en
Ali gnm ent
Procedure
Whenever the
Plat en
is
rem oved ,
it m ust be
aligned to
assure that
the
plat en and the
paper guide are
parallel to
the X - axis
shaft s . This
ensures
that the
lines
drawn
along
the X - axis will parallel the horizontal lines on the paper
grid ,
when the
paper is
posit ioned
against
the
paper
guide .
Use the following procedure :
Changing
the
Plot t er
Address
The Plot t er is
connect ed
at the
fact ory
to
respond to
a 3
in the
tens digit of the
Rem ot e
Address
, by a
strap on
the
Cal
Int erface 1
circuit
card
.
This
strap
m ay be
m oved to
allow
the
plot t er
to
respond to
ot her
values
in
the
tens
digit
( Rem ot e
40-46 ,
00-06 , etc
) .
Use
the
following
procedure :
WARNING
1. Connect the Plot t er to the power source , turn the
POWER
switch
on , and
load
pen
and
paper in the
Plot t er
.
The paper
m ust be
posit ioned
carefully , to
align
the
plat en
and paper
guide as
follows
. (
See Paper
Loading
inst ruc
tions
. )
Hazardous
voltages
are
exposed
when
the
Plot t er
case
and /
or
plat en
are
rem oved
,
unless the
Plot t er
is
disconnect ed from
the
power source .
2.
Send the pen
to the
Zero
locat ion by
clearing the
Calculat or
display , then
pressing
Rem ot e , 3 ,
1 , Rem ot e
, 3 ,
2
keys , in
that
order .
Press
Rem ot e
,
3 ,
and 3 to
lower
the
pen .
1. Press the front panel LOAD button to m ove the pen
carriage
to
the
right
hand
m argin .
Turn
the
POWER
switch
off , and disconnect the power cord .
2.
Rem ove
the
four
allen
screws
which
at t ach the
plat en
and the
4661
trim strip to
the fram e ,
keeping
track of
the
locat ion
from
which the
screws are
rem oved . The
screws
are of
different
lengt hs
, and
not ing
their
posit ion
will aid in
reassem bly
. Rem ove
the trim
strip .
3.
Draw a straight
line
across the
bottom
edge of the
paper
by
placing 15
in
the
Calculat or
display
,
then
pressing
the
) key ,
Rem ot e
, 3
and 1
keys . Then
press the
Clear
Display key
, ) key
, and
Rem ot e ,
3 , and 2
keys
.
Press
Rem ot e , 3 , and 4 to lift the pen after the m ove .
I
1
4. The line drawn across the paper should parallel the
grid
lines on the
paper (
Fig .
3-10 ) . If not ,
loosen the
four
plat en screws and
adj ust the plat en
posit ion
accordingly .
Then
repeat
steps
2 and
3 to
assure plat en
ort hogonality .
3.
Lift
the plat en
at
the
left bottom
edge
,
and
slide
the
plat en
to the
left
unt il it
clears the
pen carriage
;
then lift
slightly
to
expose
the
two
wires
which
connect
the
plat en
to
the High
Volt age
connect or on
the Power
Regulator
board .
Disconnect
the
two - pin
harm onica
plug
from the
connect or pins ; then rem ove the plat en .
4.
Rem ove
the
six screws
which
at t ach
the
Plot t er
case
to
the
fram e .
Three
are
locat ed
on
the front
panel ,
and
three
are locat ed
along
the back of
the case .
Rem ove
the
case
and the front
panel .
TEKTRONIX
CALCULATOR
PRC
PRINTED
IN
U.S.A.
Line Parallel To
Paper
Grid
A
5.
Disconnect
the two
harm onica
connect ors
from
the
rear
edge
of
the
Cal
Int erface 1
card .
Rem ove
the
two
screws
which
at t ach
the
card retainer
strip to the
fram e
,
then
rem ove
the
strip
and the Cal
Int erface 1
card
(
Fig . 3
11 ) .
Fig . 3-10 . Plot t er line parallel to paper grid line .
3-4
A

Supplem ent al
Inform at ion

4661
Operat ors
Cal Int erface I Card
Circuit Card
Retainer
Strip
P1
1111
P2
Fig .
3-13
.
Harm onica
connect or
placem ent .
Fig . 3-11 . Card and Retainer locat ions .
10. Replace the case on the fram e , and place the front
panel in posit ion on the case . Install the six at t aching
screws .
the
6. Move the jum per to the appropriat e locat ion
desired tens digit in
the
Plot t er
address
( Fig
. 3-12 ) .
11.
Connect the two -
pin
harm onica
connect or in place
on the Power Regulator board , m ak ing certain that the
wires will
not
int erfere with the
axis
cables
;
then
posit ion
the
plat en on
the
fram e .
Tens Digit
Jum per
<<<< 3838880338
CALINTERFACE
1
X
BELE
12. Place the trim strip in posit ion at the right hand
edge of the plat en , and inst all the four at t aching screws
through the plat en and trim strip . Align the plat en ,
following the plat en Ali gnm ent Procedure which appears
previously
in
this
sect ion
.
28
POWER REQUIREMENTS
Power
Consum pt ion
The 4661 uses a m axim um of 180 watts , at 115 VAC ,
60 Hz . It will operat e in any of the voltage ranges shown in
Table 3-1 .
Fig .
3-12 .
Jum per
locat ion .
TABLE 3-1
7. Replace the circuit card in posit ion on the Mother
Board , com ponents facing left as the Plot t er is viewed
from the front .
Operat ing Volt ages
( Frequency range is 40 to 66 Hz , throughout )
Volt age
Tolerance
Range
Fuse
8.
Connect the
two
harm onica
connect ors
to
the pins
on the rear edge of the Cal Int erface 1 card . The brown
connect or at t aches to the set of pins labeled P1 , and the
red to P2 ; pin 1 is at the top of each connect or ( Fig . 3-13 ) .
100
VAC
110 VAC
120
VAC
+ 10
%
90-110 VAC
99-121 VAC
108-132 VAC
2A
200 VAC
220 VAC
240 VAC
+ 10 %
9. Replace the circuit card retainer strip , and inst all the
at t aching
screws .
180-220 VAC
198-242 VAC
216-250
VAC
1A
A
3-5

Supplem ent al
Inform at ion 
4661
Operat ors
Fuses
Line
Volt age
Changes
The 4661
is
shipped to
operat e at 110
VAC ( +
10 % ) , at
48-66 Hz . ( The Line Volt age strap is shown in Fig . 3-14 . )
For
operat ion in
ot her
voltage
ranges
shown in
Table 3-1
,
posit ion the
harm onica
connect or on
the
Power Regulator
as shown in Fig . 3-15 .
There
is one
fuse on
the
rear - panel
of the
4661.
To
replace
it ,
turn
the
fuse
the
fuse
holder one
- fourth
holder
one -
fourth
turn
counterclockwise
and
then
pull the
fuse
and
fuse holder
out
( Fig
.
3-17 ) .
Install a
new fuse in
the fuse
holder
,
and
place it
back
in
the
receptacle .
Push
in
against
the
spring
and turn
the fuse
holder one
- fourth turn
clockwise to lock
the
fuse in
place
.
Line
Volt age
Strap
3474808
232018
The fuse
value
for
the
Plot t er is 2A
for the
110 VAC
operat ing
ranges .
Change to
a
1A fuse
if
the
Plot t er is
connect ed for 200 VAC and higher operat ing ranges .
20
2
DOCES
1320
2
:
DO
52

TION
TINUED
PROTECTION
AGAINST
ZARO
REPLACE
ONLY WITH
THE
TPE
AND
RATING OF
USE
FUSE
200C
Fig . 3-14 .
Line
voltage
strap
.
Fuse
.
Fig .
3-17 .
Fuse
Locat ion
.
LO
.
100 VAC
Range / (
200 VAC
Range )
I
MED
110 VAC
Range / (
220
VAC Range )
PHYSICAL
CHARACTERISTICS
HI .
120
VAC
Range / ( 240 VAC Range )
Height
:
8
inches
1
Widt h : 22 inches
Fig . 3-15 . Line voltage connect ions . 200 to 250 Volt range requires
an alt ernate harm onic connect or . Depth
:
18
inches
Weight :
40
lbs
.
STANDARD ACCESSORIES
For
operat ion in the
200
VAC
and
higher
ranges , an
alt ernate harm onica connect or is supplied which con
nect s only the two out side pins ( Fig . 3-16 ) .
The
following
accessories
are
included as
standard
with the 4661
.
070-1804-00
070-1749-00
161-0066-00
5/ 1/ 5/ 27
1
Operat ors
Manual
1 Instruction Card
1 Power Cord
1 Calculat or Int erface Cable ,
( 2
ft . 6
in . ,
type 1 )
1 Term inator Pack
3
Pens ,
Black
3
Pens ,
Red
3 Pens , Green
3
Pens
, Blue
100 Graph Paper Sheets , Linear
Square
Sect ion
1 Cover , Prot ect ive
012-0498-00
016-0567-00
016-0589-02
016-0589-00
016-0589-01
016-0589-03
WW
006-1698-00
016-0593-00
Fig . 3-16 . 200-250 VAC Connector .
3-6
A