(SANITIZED) 635 OPERATIONS MANUAL

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002200030036-6
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 28
• Document Creation Date: December 28, 2016
• Document Release Date: June 22, 2006
• Sequence Number: 36
• Publication Date: August 10, 1967
• Content Type: LETTER

Approved For Release 2006/000N
DDR-DUPE
; r
Dear Sir:
B04747A002200030036-6
10 August 1967
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In accordance with the provisions of the referenced
contract, we are enclosing herewith three (3) copies of
635 OPERATIONS MANUAL.
Very truly you
LEB/aw
Ince.
25X1
25X1
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COWL
DROOP
IMITUDtb FROM AUTOMNIOD
DOWNGRADING AND
DEGLASSIFICATION
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DATE
TRANSMITTAL SLIP
T1
REMARKS:
FROM:
OTI/FD/CA&SB/0AS/1036 Amos Bid.,
ROOM NO. BUILDING
EXT
FORM NO . 0 A 1 REPLACES FORM 36-8
1 FEB 55 WHICH MAY BE USED.
(47)
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PREPARED BY:
635
OP E RAT I ONS MANUAL
July 1967
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TABLE OF CONTENTS
SECTION
General Description
PAGE
1.0
2.0
Functional Description
2
2.1
General Illumination
2
2.2
High Intensity Tracking Lights
2
2.3
Film Transport System
3
2.4
Holddown Platen Operation
4
2.5
Elevation Mechanism
4
2.6
Eyepiece Extension
5
3.0
Controls
- Location and Function
5
3.1
Power Switch
5
3.2
Pilot Light
5
3.3
Platen Switch
5
3.4
Brightness Controls
5
3.5
Tension
6
3.6
High Intensity Light
6
3.7
High Intensity Light Dimmers
6
3.8
High Intensity Light Filter
6
3.9
High Intensity Light Master Magnets
6
3.10
Shade Control
6
3.11
Film Transport Control
7
3.12
Film Threading Switch
7
3.13
Film Threader
7
3.14
X-Y Carriage Position
7
3.14.1 Y Position Control and
Engagement Lever
7
3.14.2 X Position Control and
Engagement Lever
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TABLE OF CONTENTS
III
II
??
SECTION
3.15 Platen Props
3.16 Interpupillary Distance
3.17 Eyepiece Focussing
3.18 Stereoscope Adjusting Screws
3.19 Elevation Control
Operation
4.1 Setting Up
PAGE
4.0
8
8
8
9
9
9
9
4.2 Power Requirements
9
4.3 Film Loading and Threading
9
4.4 Film Transport
11
4.4.1 Slew Control
11
Id
4.4.2 Platens
11
4.4.3 Tension
12
4.5 General Illumination
12
4.6 High Intensity Tracking Lights
13
4.7 Shades
14
4.8 Adjustment of Instrument Height
15
aral
4.9 Microscope Eyepiece Extension
15
5.0
?
General Maintenance
15
15.1 Glass Cleaning
15
lId
5.2 Cleaning of Rollers
16
5.3 Replacement of High Intensity Lamps
16
5.4 Fuse Replacement
16
5.5 Pilot Light Replacement
16
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Figure 1
Figure 2
Figure 3
TABLE OF CONTENTS
FIGURES
High Intensity Tracking Light Source
Drawing Number 113383
Film Transport System
Drawing Number 113382
Controls
Drawing Number 800958
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1.0 General Description
The 635 viewing is designed basically as a superior
mount for the 'Versatile Stereoscope. It has two 20" by 10"
cold cathode fluorscent illuminated formats for viewing corres-
ponding images on two 500' rolls of 9 1/2" wide film. It can
also use film widths of smaller size. In addition to the general
illumination, it features a high intensity tracking light source
on each format. These sources are more than ten times brighter
than the general format illumination and are used with high
magnifications and dense photography. The positions of the
sources are slaved to the stereoscope as it moves, using magnetic
couplings through the glass platen.
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The projection lamps for the tracking light sources
are located on the outside of the instrument where they can dissipate
heat and are accessible for bulb replacement. The light after
being condensed, is piped into the viewing area using fiber optics
cables. Aside from increasing the accessibility of the projection
bulbs, it eliminates heat on the film surface.
The high intensity sources are individually adjustable
in brightness and there is provisions for insertion of neutral
density or color correction filters in the optical path.
The microscope is mounted on a carriage assembly which
permits it to be positioned over the area of interest. Two speed
controls on the X and Y carriage motion permit coarse and fine
positioning. The microscope mount and general instrument con-
struction is designed to minimize the effect of external and oper-
ator induced vibration on the motion sensitive stereoscope rhomboids.
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635 Operations Manual
The film spools are located at the rear of the instru-
ment away from the operator. Each film is automatically transported
using a unique motorized drive that also maintains film tension
regardless of speed or acceleration. A single knob controls the
direction and speed of film transport.
Film is held flat on the viewing surface by glass
pressure platens. The platens raise up automatically when the
film is transported and lower when the film is stationary.
The entire instrument is built into an elevating frame
supported on a castored (with locks) stand. A motor and gear
train permits effortless and precise adjustment of the height by
the operator.
To increase operator comfort and improve his efficiency,
an eyepiece extension is supplied which permits the operator to
use a normal office type chair and yet be in excellent viewing
position at all stereoscope positions.
2.0 Functional Description
2.1 General Illumination - The two 10" X 20" formats are
illuminated with cold cathode fluorescent lamp grids each equipped
with a plastic diffuser to give uniform illumination. Each grid
brightness is controlled by a Silicon Controlled Rectifier Phase
Angle Control. The controls are on the front panel. All the
electronics and transformers roquired are mounted in the electronics
rack on the rolling stand.
2.2 High Intensity Tracking Lights - The tracking lights
use an optical system as is shown in Figure (1). A small 30
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watt, 6 volt projection bulb is used to illuminate one end of the
fiber optic cable through two aspheric condenser lenses. The
light travels through the cable and exits from the other end
being reflected by the mirror and concentrated on the microscope
objective by another short focus condensing lens. A leaf type
iris in the optical path permits the dimming of the light through
a 20:1 range without changing the color temperature. Provision
is provided for the insertion of a filter and a blue filter is
amid
supplied with the unit to make the color of the high intensity
source closer to that of the general illumination.
The mirror and condensing lens for each tracking light
source is mounted on a magnet assembly which is positioned by a
complimentary magnet array mounted on an adjustable arm attached
to the stereoscope mount.
2.3 Film Transport System - There are two independent
identical film transport systems. A schematic of this system is
shown in Figure (2). The slew control knob turns the shaft of
a potentiometer. The electrical signal from the potentiometer is
amplified and used to drive the slew motor at a rate proportional
to the signal. The amplifier maintains motor speed constant for
any potentiometer setting by using the induced residual armature
voltage in the motor as a tachometer feedback signal. A magnetic
particle brake maintains a resistance torque on the payout spool
and thus maintains film tension. To control the tension, the
support force at one end of the roller is sensed by semi-conductor
strain gages and this signal, after amplification, is used to
decrease film tension if it exceeds a certain preset value. When
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driving in the other direction, the cam actuated switches on the
slew potentiometer shaft reverses the roles of the drive clutch
and restraining brake.
When the potentiometer is totated to its extreme posi-
tion, another switch (not illustrated) is actuated which applies
full voltage to the motor for maximum slew speed.
A switch is provided on the side of the unit to reverse
the direction of the motor. This allows one to load the spool so
that the film is taken from either the top or bottom of the roll.
2.4 Holddown Platen Operation - The glass pressure or
holddown platens are actuated by linear induction motors. Limit
switches are operated at both ends of the travel to remove voltage
from the motor actuators.
Normally, with the film stationary, the platens are
in the down position. As the slew control is advanced applying
voltage to the slew motor, a sensitive relay activates and raises
the platen. An override switch is provided to keep both platens
in the up position for film loading.
2.5 Elevation Mechanism
The elevation mechanisms which permit the operator
to adjust the height of the table, consist of a motor, gear train,
and associated control circuitry. The motor is a very quiet split
phase capacitor-start type controlled by the "Raise-Lower" switch
thru relays. A separate relay prevents the motor from being re-
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versed until it has slowed to a safe speed and a mechanical inter-
lock on the "Raise-Lower" switch prevents simultaneous actuation
of both the raise and lower buttons.
Limit switches deactivate the motor from driving further
at either extreme of motion.
2.6 Eyepiece Extension
The stereoscope eyepiece extension allows the operator
to use a regular office chair when viewing thru the stereoscope.
The extension mounts on a plate supported by the scope mounting
ring. It consists of two identical optical relays. The regular
eyepieces are also used with the extension.
3.0 Controls - Location and Function (See Figure 3)
3.1 Power Switch - The main power switch (1) is located
on the right control panel. It controls all power to unit.
3.2 Pilot Light - The pilot light (2) is located on the
right control panel. It indicates when power is being supplied
mit to unit.
3.3 Platen Switch - The platen switch (3) is located toward
the top of the left control panel. In the "UP" position it
raises both platens.
3.4 Brightness Controls - There are two brightness controls
(4) and (5) one located on each control panel. Clockwise rotation
of the knob increases general illumination brightness. Full
counterclockwise rotation shuts the illumination off.
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3.5 Tension - There are two tension controls (6) and (7),
one located on each control panel corresponding to the film drive
it controls. Since this control is seldom used; it is provided
with a lock to prevent accidental operation.
3.6 High Intensity Light - This switch (6) is on the left
hand panel it controls both high intensity sources.
3.7 ,High Intensity Light Dimmers - Dimming of the high
intensity tracking sources is accomplished with controls (9) and
(10) located on the lamp cartridge on either side of the equipment.
3.8 High Intensity Light Filter - A drop-in filter (11)
and (12) is incorporated in each lamp cartridge on either side
of the equipment. A blue filter is supplied with the unit.
3.9 High Intensity Light Master Magnet - The position
controls (13) and (14) for the High Intensity Track Light Sources
are located above the pressure platen on a frame suspended from
the microscope mounting block. The arms holding the master magnets
are held in position by friction. The operator needs only to
overcome this friction to reposition the magnets.
3.10 Shade Control - Two control knobs (15 and 16) are
located on either side of the unit toward the top rear. Rotation
of the knobs toward the front of the instrument causes the shade
to move across the format. Slade is held in position by friction.
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3.11 Film Transport Control - The control knobs (17 and
18) for the film transports are located at the front of the unit
on either side. When film is threaded properly, direction of
film travel and amount of rotation is proportional to film speed.
A detent action and index marks indicates the center or OFF
position.
3.12 Film Threading Switch - A switch (19 and 20) located
on either side toward the rear of the unit, selects which threading
configuration is used. A label on the switch shows schematically,
the film paths for both switch positions.
3.13 Film Threader - A knob (21 and 22) on either side and
toward the rear of the unit controls the position of the film
threading bar. This bar may be used to pull the end of the film
roll thru the film channel. Rotation of the knob toward the front
of the unit will cause the bar to move toward the rear. When
not in use, the film threader should be stowed at the rear of the
instrument by rotating the threading knob toward the front until
the threader bar lies up above the bottom rear roller and against
the casting. This will insure that the bar will not rub on the
film.
3.14 X-Y Carriage Position
3.14.1 Y Position Control and Engagement
Lever - These controls (23 and 24) are located on the
front right corner of the Y carriage. The control is engaged when
the lever is down and disengaged when up. Labels and mechanical
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stops on the lever indicate the proper positions. The position
control is two-speed; the outer knob is for coarse positioning
and the smaller' inner knob is a limited travel vernier for fine
positioning.
3.14.2 X Position Control and Engagement Lever
The X position control (25) is located on the top left
side of the Y carriage and the engagement lever (26) is on the
right side of the Y carriage. Operation of X controls is identical
to operation of Y controls.
3.15 Platen Props - Platen props (27 and 28) are located
at the outer edge of each format. These support the platen in its
raised position. The stereoscope rhomboids must be swung out
of the way before raising platen.
3.16 Interpupilary Distance - The knurled thumbscrew (29)
on the microscope extension controls the interpupliary distance
of the eyepieces. A scale on the instrument indicates this distances
in metric units.
3.17 Eyepiece Focusing - Separate focusing adjustments (30)
are provided on each eyepiece mount.
3.18 Stereoscope Adjusting Screws - The stereoscope mounting
plate is positioned by four set screws (31) and locking nuts. These
are adjusted to make the optical axes of the stereoscope perpen-
dicular to the viewing surface.
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3.19 Elevation Control - A switch (32) with "RAISE" and
"LOWER" indications is positioned just under the left side of the
table. This switch controls the elevating motor.
4.0 Operation
4.1 Setting Up - The 635 should be located on a solid level
surface. In addition, the site should be remote from areas of
heavy traffic or machinery. This is to eliminate vibrations induced
in the stereoscope rhomboids thru the frame of the instrument.
The use of the locks (33) on the casters will prevent the instrument
from moving during operation although their use is not a necessity.
4.2 Power Requirements - The instrument requires a source
of 115 volt + 10 volts, 60 cps power. The source should be
capable of delivering at least 15 amperes to the equipment.
Select a source which is isolated from other heavy electrical
equipment to minimize variations in light intensity which will
occur when other equipment is turned on or off.
The unit is supplied with a standard three prong
grounded plug. Make sure the source recepticle is the mating type.
For safety do not defeat the purpose of the ground wire by usima
a non-grounding recepticle. If an adapter plug is used, ensure
that the ground wire is connected to a good electrical ground.
4.3 Film Loading and Threading - Look at the ledgend plate
on the side of the unit and decide which film path configuration
you want to use. Actuate switch (19 or (20) accordingly. Next,
position the idler casting to the position of the film spool size.
Detents on the rod indicate the most commonly used film spool
sizes. Tighten thumbscrew (34)or (35). Install empty reel on
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bottom by withdrawing idler spindle (36) and slipping spool end
over the drive spindle.
Release idler spindle and make sure it enters proper
hole in other end of spool and is in locked position. If it does
not drop into its locked position, the idler casting may have to
be spread out slightly. Install other film spool in upper posi-
tion in a similar manner.
Turn on power switch ( if not already on) and put
Platen Switch (3) in "UP" position. This will raise the platens
so that the film may be slipped thru. Pull off a length-of film
from the roll and slip it under the top back roller and under the
pressure platen. Push film thru until the end emerges from front
of unit. From the front, slip film in slot under unit and push
thru until end emerges at rear. Tape film to.take up spool or
insert tapered leader in slot in spool. Check with ledgend plate
to see if the film path is correct and switch (19) or(20) is in
the proper position. Also make sure threader bar is in its stowed
position - that is, above the rear bottom roller and up against
the casting. For most films the use of the threader bar is not
required for pulling film thru bottom tray.
Rotate Slew Control Knob (17) or (18) toward front
slowly until film starts to move and slack is removed. Platen
switch may be put in "DOWN" position now,.
For small width film or very flexible film base mater-
ials, pushing the film under the pressure platen or thru the slot
under the table may not work. In which case, the platen may be
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raised and held in the up position with its prop (27 or 28) while
threading film and the film threader bar controller by crank (21
or 22) may be used to pull the end of the film from front to back.
When using the threader bar, tape the end of the film to the bar
and pull sufficient slack from the roll so that the threader
will not have to pull film from the spool.
If difficulty is encountered in pulling film from the
spool, shut off power while threading to remove voltage from the
brakes.
4.4 Film Transport
4.4.1
Slew Control
After films are threaded and checked to see that the
film paths correspond to those shown on the ledgend plates on
threading switches 19 and 20, film may be transported on either
or both sides by operating the appropriate slew control knob (17
or 18). Rotation of the knob toward the operator causes the film
to move in the same direction and at a speed proportional to the
amount of rotation. When the Slew Control Knob is rotated to its
extreme position in either direction, full voltage is applied to
the motor and maximum slew speed results in that direction. A
detent and index mark indicates the null or off position.
4.4.2 Platens
With the Platen Switch (3) in the "DOWN" position,
each platen will raise automatically only when the corresponding
Slew Control Knob is rotated off the detent and the film is
transported.
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When film is stopped, the platen is automatically
lowered after an approximate two second delay. The delay is
incorporated in the design to prevent excessive and unnecessary
actuation of the platen which would result if the operator were
moving the Slew Control Knob about the null position while making
accurate adjustments on the film position.
-With the Platen Switch (3) in the "UP" position, both
platens are raised and remain in the up position, regardless of
the position of the Slew Control Knob.
4.4.3 Tension
The? tension controls (6 and 7) establish the level
of tension in the film. Tension should be set to the lowest value
which will allow film transport without excessive overrunning of
Ih!_fiLn_R2221a_yihRn_dg_tlerating. To set tension, rotate the
control full counterclockwise. Transport film, accelerating and
decelerating, and observe film spillage. Rotate tension control
clockwise until little or no film spillage occurs. Lock control
in position. Excessive tension may stretch film and puts an
unnecessarily heavy load on the transport mechanism and therefore
should be avoided.
4.5 General Illumination
The general illumination format on each side is con-
trolled by knobs on the respective control panels. Rotation of
the knob clockwise increases brightness Full counter -clockwise
rotation shuts off the lamp grid entirely.
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EN
When the format illumination is first turned on,
there may be a slight noticable flicker. This will last for 5
or 10 minutes or until the lamps are warmed up.
A flicker or variation in intensity will be noticed
whenever a machine connected to the same line is turned on. This
also applies to the platen raising motors and the elevating
motor within the unit. If interference of this type is found
to be objectionable, it may be minimized by operating the lamp
grids at full brightness.
4.6 High Intensity Tracking Light - These sources are
controlled by the "ON-OFF" switch (8) on the left control panel.
Intensity may be independently adjusted by using the iris
diaphragm controls (9 and 10) on the lamp cartridges. A blue
filter (11 and 12) is normally used to adjust the color temper-
ature to that of the general format illumination, however, these
may be removed to obtain an even brighter light if so desired.
The light sources may be placed under the rhomboid
objectives by manipulating the position of the master magnets
(14 and 15). The positioning arms are held in place by friction
and may be readily moved.
At low magnifications, it may be necessary to adjust
the position of the tracking source as the stereoscope is moved
because of the wide field of view and the following error lag
in the slave magnets.
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When not is use, the slave assemblies may be stowed
at the rear of the format.
4.7 Shades - Each format has a shade which may be extended
across the short dimension by turning the appropriate control
knob (15 or 16). This permits the operator to mask out the unused
portion of the format when the film width is less than 9-1/2
inches.
Care should be exercised in the use of the shade to
insure that it does not interfere with the operation of the
tracking light source.
4.8 Adjustment of Instrument Height - The height of the
viewing surface may be adjusted by using the Elevation Control
(32). The power for the raising mechanism is controlled also
by the main power switch so this switch must be "011"
Operation is straight forward, the motions of the
table corresponding to the "RAISE" and "LOWER" labels on the
switch. Limit switches are provided at both extremes of travel
to prevent the mechanism from exceeding its mechanical limits.
When the limit switch is operated, the motor is prevented from
driving further in that direction, but is still capable of
driving in the opposite direction.
Every effort has been made to make the elevating system
as foolproof and fail-safe as possible; however, care should be
taken to prevent foreign objects from falling into the rack pinion
clearance slot which is exposed when the table is in the low
position. Also the operator should be aware of the fact that
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the table can be lowered to a position where it would bear on
his knees. The motion is very slow and this condition gives
ample forwarning. Should the operator at any time be concerned
about proper operation of the mechanism, he should remember
that if the RAISE-LOWER Switch is not being actuated, the
elevating motor cannot run and the table cannot move regardless
of what malfunction exists.
4.9 Microscope Eyepiece Extension - The eyepiece extension
should be installed by removing the eyepieces and slipping the
assembly over the eyepiece housings. Tighten the extension in
place with the chained thumbscrews making sure that the image
rotation mechanisms on the stereoscope are not binding - shift
extension slightly until they are free.
The original eyepieces are used on the extension also.
Note that there is an interpupillary distance adjustment and both
eyepieces can be focussed on the extension.
Due to the large cantilever effect of the extension
on its mount, care should be excerised in applying force in
the eyepiece area. Do not lean on the eyepiece extension!!
5.0 General Maintenance
5.1 Glass Cleaning and Maintenance - Glass surface
(pressure platen and viewing sur ,ce) may be cleaned using a
clean lint free rag or lens tisEie moistened with lens cleaner.
The glass pressure platen may be removed by swinging the stereo-
scope rhomboids to the side and lifting the plate out of its
guides.
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5.2 Cleaning of Rollers - Chrome plated rollers may be
cleaned with a solvent such as carbon tetra-chloride, acetone,
methyl ethyl, ketone or a similar agent. Be careful not to
get the solvent into the bearings.
5.3 Reylacement of High Intensity Lamps - To replace lamps,
press the knurled lamp mount into the cartridge slightly, rotate
counterclockwise, and withdraw the bulb mount. Bulb base is of
the bayonnet type. Replacement lamp is type 44:1593. Bulb life
is approximately 200 hours.
After bulb replacement, it may be necessary to adjust
the radial position of the end of the fiber optic cable. This
is done by loosening the four screws which hold the cable mounting
plate and shifting it until maximum spot brightness is obtained
at the film plane. Position of this plate is shown in Figure 3.
5.4 Fuse Replacement - Fuses are located on electronics
chassis mounted on the base of the rolling frame. Replacements
are as follows:
Fl - 10 amp Type GLH 10
F2 - 10 amp Type GLH 10
Note that frequent blowing of fuses is an indication
of a more serious problem.
5.5 Pilot Light Replacement - To replace a defective pilot
lamp, remove the plastic lens by unscrewing and replace bulb.
Bulb mount is bayonnet type. Bulb type is NE112H.
-16-
Approved For Release 2006/06/22 : CIA-RDP78B04747A002200030036-6
Approved Tor Release 2006106/2Z: CIA-RDP78B04747A002200030036-6
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