OPERATING MANUAL FOR MLT1540 SPLIT FORMAT IMAGE INTERPRETATION LIGHT TABLE

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05171A000400030067-7
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 43
• Document Creation Date: December 28, 2016
• Document Release Date: June 7, 2005
• Sequence Number: 67
• Publication Date: October 31, 1970
• Content Type: REQ

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MLT1540-1
31 October 1970
0
OPERATING MANUAL
MLT1540 SPLIT FORMAT
IMAGE INTERPRETATION LIGHT TABLE
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Copy l7 of 600
0
Declass Review by NGA/DoD
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1. 1 Scope
1. 2 Purpose of Equipment
1.3 Physical Description
1.3.2 Viewing Surface
1.3.3 Elevating Table
1.3.4 Film Transport
1.3. 5 Microstereoscope Carriage and Mount
1.3.6 Protective Cover
1. 5 Optional Configurations
1.5.2 Manual Carriage with Manual Elevation and Non-Tilting
Stand (Model MLT1540-1)
1.5.3 Manual Carriage with Manual Elevation and Manual
Tilting Stand (Model MLT1540-3)
1. 5. 4 Motorized Carriage (Normally Free) with Power Elevating
and Tilting Stand (Model MLT1540-2)
1. 5. 5 Motorized Carriage (Normally Locked) with Power Elevating
and Tilting Stand (Model MLT1540-4)
Page
2.
2.
2.
1
2
3
Scope
Controls and Indicators
Carriage Motion Summary
2.
3.
2
Manual Carriage with Manual Elevation and Non-Tilting
Stand (Model MLT1540- 1)
2.
3.
3
Motorized Carriage (Normally Free) with Power Elevating
and Power Tilting Stand (Model MLT1540-2)
2.
3.
4
Manual Carriage with Manual Elevating and Tilting Stand
(Model MLT1540-3)
2,
3.
5
Motorized Carriage (Normally Locked) with Power Elevating
and Tilting Stand (Model MLT1540-4)
15
2.
4
Manual Elevation of Stand 16
2.
5
Operating Instructions 16
2.
5.
1
Normal Mode, Without Loop
16
2.
5.
2
Normal Mode, With Loop
16
0
2.
5.
3
Split Mode
17
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TABLE OF CONTENTS (Cont)
Section - Page
2. OPERATING INSTRUCTIONS (Cont)
2. 6
Mounting Film
18
2. 6. 1 Normal Mode, Without Loop
18
2. 6. 2 Normal Mode, With Loop
18
2. 6. 3 Split Mode
20
3.1
Cabinet
22
3. 2
Illumination Surfaces
22
3. 2. 1 Cleaning Instructions
22
3. 3
Roller Cleaning
22
3.4
Film Tracking
22
3. 5
Ball Slides
23
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Figure No.
Page
I
Split Format Image Interpretation Light Table MLT1540
2
II
Operating Controls and Indicators
9
III
Arrangement of Film Drive Brackets
19
IV
Normal Mode with Loop, Film Loading Diagram
21
Table No.
Page
1
Condensed Technical Data
3
2
Controls and Indicators
12
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1. GENERAL INFORMATION
STAT
1 . 1 Scope
1. 1. 1 This manual contains operating instructions for the Split Format
Image Interpretation Light Table Model MLT1540 (figure I). light table is manufactured by Tbi
STA
1. 2 Purpose of Equipment
1. 2. 1 The light table is a four transport film handling and viewing system
which can accommodate multiple reels of photographic reconnaissance
film as well as film chips or cut film. The viewing surface consists
of two separate illuminated areas adjacent to each other with a com-
bined size of approximately 15 by 40 inches.
1. 2. 2 The table includes a simple film looping mechanism which allows
forming a loop of film below the table in order that separated frames,
on the same roll of film, may be arranged adjacent to each other for
convenient stereo viewing. This mechanism is capable of forming a
continuous film loop from 0 to 76 inches.
1. 2. 3 A mount capable of being translated in both the X and Y directions is
incorporated to support a microstereoscope at the correct height
above the light table surface. This mount interfaces directly with the
micros tereos cope and incorporates both coarse and fine focus
controls.
1. 2. 4 Condensed technical data concerning the light table is listed in
table 1.
1.3 Physical Description
1. 3. 1 The light table consists of a split format viewing surface, an elevat-
ing table, film spool transports, a micros tereoscope carriage and
mount, and a protective cover as described in the following
paragraphs.
1. 3. 2 Viewing Surface. Two separate glass formats 15 x 20 inches in size
and constructed of 3/8 in. thick polished plate glass are uniformly
illuminated by easily replaceable fluorescent- type lamps and a suit-
able diffuser. A 1-1/4 in. space between the two formats accommo-
date two film rollers. These rollers are used for forming a takeup
loop on a single film or for threading two films set up for split field
comparison.
? The illumination intensity is continuously variable and a switch is
provided permitting unused lamps to be turned out reducing overall
glare and resulting in a cooler viewing surface.
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0
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Figure I. Split Format Image Interpretation Light Table MLT1540
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Overall dimensions (LxDxH) 62 x 31 x 43 inches
(including film supports)
Viewing surface dimensions
Film sizes acce
ted
Two 15 x 20 in.
by a 1- 1/4 in.
segments separated
center space
p
Viewing Single Rolls
70 mm, 5 in. ,
6. 6 in. , and 9. 5 in.
Parallel viewing of two of the
70 mm, 5 in. ,
6. 6 in.
same width or any combination
of two different widths
In- line viewing of two of the same
70 mm, 5 in. ,
6. 6 in. , and 9. 5 in.
width
No. of film support stations 4
Motorized film transport speeds Bidirectional with center zero
High speed range 0. 1 to 100 inch per second
Low speed range 0. 1 to 1 inch per second
Microstereoscope systems accepted
Zoom 70 Stereoscope with or without 2X wide-span
2. Zoom 240 Stereoscope System (Model 28) with all
relays i. e. 0. 43X, 1. OX, and 2. OX)
Zoom 240 Stereoscope with the Advanced Stereo
Rhomboid, Model II
4. Versatile Stereoscope with all relays (i. e. 0. 43X,
, and
Dual Power Measuring Microscope.
Electrical power
117 ? 15 vac, 60 Hz, single phase
25 amperes
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The capability of synchronous tilting of the illuminated areas and the
microscope mount and carriage by means of a motorized drive is pro-
vided as an optional feature. Tilting can be continuously controlled
throughout the range of 0 to 15 degrees.
A hinged cover is provided to enclose the underside of the film loop
takeup area and translation of the film is accomplished with this
cover closed. The inside surface of the cover is painted to prevent
the scratching of the film while being translated with the cover
closed.
1.3.3 Elevating Table. The light table and microstereoscope mount are
mounted on an elevating table. This table is conveniently adjustable
by means of a manual drive throughout a range of height, measured
from the floor to the bottom of the light table proper, of 22 to 40
inches. The table is stable with no danger of tipping at all heights.
The elevating mechanism provides firm positioning and locking of the
light table proper throughout the elevation range. Manual operation
of the elevating mechanism requires no more than 12 pounds force on
the actuating handle of a crank.
In addition, the capability of elevating the table by means of a motor
driven mechanism is provided as an optional feature. This motor
driven system incorporates an emergency auxiliary hand crank that
will smoothly and easily raise and lower the table, and provide firm
positioning and locking of the light table proper throughout the eleva-
tion range. The purpose of this hand crank is to provide elevation
and lowering of the table in the event of a power failure.
For both the manual and motorized elevation systems positive stops
are provided to prohibit travel above or below the specified range of
height for the elevating table of 22 inches to 40 inches. The table is
equipped with resilient-tired wheels, with nominal dimensions of
5 in. diameter by 1-5/8 in. width, each of which has its own easily
applied foot actuated, locking-type brake to prevent both the caster
from swivelling and the wheel from rotating.
The light table and the translating microstereoscope mount are
designed to offer the microstereoscopes in a comfortable viewing
position with the operator standing or seated.
1. 3. 4 Film Transport. Four film support stations are provided to accom-
modate the various film widths and combinations listed in table I.
Each transport consists of a film drive bracket and an idler bracket
mounted on ways at the ends of the light table frame. Two transports
can be mounted on the top way on each side for viewing two reels of
film in the normal manner or one transport can be placed on the top
way and the other on the bottom way on each side for viewing two
rolls of film in the split mode.
The top ways are fitted with detent holes for proper support position-
ing plus color coded markers for alignment of the supports. The
supports are fastened to the ways by means of a thumb screw locking
mechanism. A spring loaded lever is provided on the film drive
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brackets for retracting the spindle mechanism which engages and
secures the spool. The middle idler bracket of the upper film sup-
port on each side is equipped with two spindles so that it can be used
as the common idler between two parallel webs of film spaced 1/2
inch apart.
The film transport is designed for motorized operation with a manual
drive provided as an option. The film can be moved in both directions
at each film support station. The film drive motors are controlled by
a high and low speed control knob. The low speed range (knob pushed
in) provides positive and smooth film positioning throughout a range of
speeds of 0 to 1 inch per second. The high speed range (knob pulled
out) provides positive and smooth film positioning through a range of
speeds of 0 to 500 feet per minute. The maximum speed on the high
speed range permits 1000 feet of 4 mil base, 9-1/2 inch wide film to be
transported in three minutes or less. The film drive, in the maxi-
mum speed range, is capable of a film speed of no less than 20 inches
per second. With the two rolls of film mounted in parallel, it is
possible to drive one of the rolls in one direction and the other roll
in the opposite direction, individually or simultaneously. Also, with
two rolls of film mounted in parallel, it is possible to drive both rolls
of film in the same direction individually or simultaneously. An
attachable manual film transport drive capable of film movement is
included for emergency power off operation. In addition, a manual
film transport drive which provides positive and smooth film posi-
tioning and the same directional film movement as the motorized
drive system is provided as an optional feature.
Two rollers on each end of the light table plus four rollers in the cen-
ter are positioned so that film can be transported either emulsion up
or emulsion down. The rollers have a surface that does not scratch
the film.
1.3.5 Microstereoscope Carriage and Mount. A precision mount is pro-
vided to place any of the micros tereoscope systems listed in table 1
in correct position for focus and for comfortable viewing of film
materials located on the two 15 by 20 inch glass viewing surfaces.
Fine and coarse focusing adjustments are furnished as an integral
part of the mount. In addition, the micros tereoscope can be rotated
in the mount ?45 degrees from the center position. A locking knob
fastens the scope in the angular position selected.
The mount can be translated manually in both the X (lengthwise) and
Y (depth) directions to cover the full dimensions of the viewing sur-
face. The horizontal plane of the microstereoscope mount and the
viewing surfaces are parallel within 0. 015 inches over the entire
translation field of the micros tereos cope mount. Adjustment devices
necessary to achieve this parallelism are readily accessible as a
maintenance procedure (not intended for operator level maintenance).
A motorized drive capable of driving the mount at traverse speeds
within the range of 0 to 0. 5 inches per second is provided as an
optional feature and incorporates the same capability, with respect
to the distances of translation and parallelism of micros tereos cope
mount and viewing surfaces, as the manual system.
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The focusing mechanism is self-locking. Easily engaged locks are
provided to hold the mount of the microstereos cope carriage firmly
at any position of its travel in the X and Y directions. With the
carriage locks engaged, a force of 10 pounds or greater is required
to move the carriage in any combination of X and Y directions. Addi-
tional locking devices are included to preclude carriage motion during
transportation of the table.
1. 3. 6 Protective Cover. A plastic protective cover is provided to protect
the viewing surfaces of the table and associated optics when the
equipment is not in use.
1.4 Electrical Power
1.4. 1 The light table will operate in all modes on 117 volts, plus or minus
15 volts, 60 Hertz, single phase, alternating current. Fuses and
circuit breakers of suitable capacity are supplied to prevent circuit
overloads. A retractable, lockable, heavy duty, Underwriters Lab-
oratory approved, 3-conductor electrical extension cord with a
NEMA 5-20P 3-prong plug attached to the extension cord by screws
and incorporating a cord clamp, is furnished with the table for con-
nection to the operating power source. This cord when extended is
20 feet long. In addition, a non-retractable power cord 20 feet long
is provided as an optional feature. Means are provided for stowing
this optional power cord when not in use. Also, a standard (Universal
52-62) 3-prong plug attached to the extension cord by screws and
incorporating a cord clamp, is available as an optional feature.
1. 5 Optional Configurations
1. 5. 1 The basic light table provides the following capabilities: 1000 foot
rolls of film, 0 to 76 inch film takeup loop, manual table elevation,
motorized film transport, and manual microstereoscope carriage
and mount. In addition, options are available that may be incorpo-
rated on the basic table to provide any one or all of the following
capabilities: motorized table elevation, manual film transport,
motorized microstereoscope carriage and mount, and motorized
continuous tilt of the illuminated surfaces and carriage. It is the
intent that these options be replacements for, and not additions to,
their alternative configurations.
1. 5. 2 Manual Carriage with Manual Elevation and Non-Tilting Stand (Model
MLT1540-1). This is the basic light table described above and is pro-
vided with X -axis and Y-axis friction locks for the scope carriage.
1.5.3 Manual Carriage with Manual Elevation and Manual Tilting Stand
(Model MLT1540-3). A manual carriage furnished with a tilting stand
is provided with an optional fail safe override to prevent uncontrolled
motion in the Y direction when the table is tilted. To move the car-
riage in the Y direction with the table horizontal, it is necessary only
to release the Y friction lock. In a tilted position, a fail safe interlock
is activated preventing Y translation unless the interlock is purposely
defeated. To accomplish carriage motion in the Y direction with the
table tilted, it is necessary for the operator to actuate the override
switch located on the side of the bridge carriage and to depress the
6
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carriage release button located near the optics mount. The release
button is protected from accidental activation. The manual override
feature actuates a fail safe brake coupled to the carriage. The brake
is released by the override switches, both of which must be set to
enable movement of the carriage. A lighted pushbutton indicator is
provided showing the status condition of the fail safe override switch.
1.5.4 Motorized Carriage (Normally Free) with Power Elevating and Tilting
Stand (Model MLT 1540-2). A motorized carriage furnished with a
tilting stand incorporates a fail safe feature to prevent uncontrolled
motion in the Y direction when the table is tilted. Tilting the table
automatically activates the fail safe feature which utilizes the Y drive
mechanism to lock the bridge motion. To accomplish carriage motion
in the Y direction with the table tilted, it is necessary for the operator
to actuate either the motorized bridge motion control or the two manual
override switches. The manual override feature consists of a fail safe
override switch which must be set to enable a carriage release button
located near the optics mount. The release button is protected against
accidental activation and, in addition, is illuminated when enabled by
the fail safe override switch.
1. 5. 5 Motorized Carriage (Normally Locked) with Power Elevating and
Tilting Stand (Model MLT 1540-4). A light table with a motorized
carriage, which is normally locked in place, is mounted on a stand
which has power elevation and tilt capabilities. It also incorporates
the fail safe feature which prevents uncontrolled motion in the Y
direction when the table is tilted. In a non-tilted position, carriage
motion in the X or Y direction is accomplished by either actuating the
motorized bridge motion control or the manual release push button or
toggle switch located on the control bridge.
When the table is tilted carriage motion in the X or Y direction is
accomplished by actuating the motorized bridge motion control.
Manual motion in the X direction may be accomplished by actuating
the release push button or the toggle switch located on the control
bridge.
Setting the fail safe override switch illuminates and activates the
release push button so that when it is depressed the table may be
manually moved in both X and Y directions.
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2. OPERATING INSTRUCTIONS
2. 1 Scope
2. 1. 1 This section describes the function of all operating controls and indi-
cators, describes setup of film transports for the various mode of
operation, and gives step by step procedures for normal operation.
Controls applicable to all options are described. Disregard descriptions
or procedures not applicable when operating less complex models.
2. 2
Controls and Indicators
2. 2. 1
All operating controls and indicators are illustrated in figure II and
described in table 2.
2. 3 Carriage Motion Summary
2.
3.
1
The stereomicroscope carriage has a number of motion capabilities
depending upon the model configuration and whether or not the viewing
surface is tilted. These capabilities are summarized in the following
paragraphs.
2.
3.
2
Manual Carriage with Manual Elevation and Non-Tilting Stand (Model
MLT 1540- 1). The carriage may be moved manually in X and Y
directions with a friction drag of 2 to 4 pounds. Friction locks are
provided in the X-axis and the Y-axis.
2.
3.
3
Motorized Carriage (Normally Free) with Power Elevating and Power
Tilting Stand (Model MLT1540-2).
a. May be moved manually in X and Y directions with a friction drag
of 2 to 4 pounds.
b. May be motor driven in X and Y directions using Carriage Speed
and DIRECTION controls.
a. May be motor driven in X and Y directions using Carriage Speed
and DIRECTION controls.
b. May be manually moved in X direction with a friction drag of 2 to
4 pounds.
?
c. May be manually moved in Y direction if:
(1) FAILSAFE OVERRIDE SWITCH is ON, and
(2) Y REL WHEN LIT pushbutton is pressed.
CAUTION: Allow carriage to come to a complete stop before
releasing Y REL WHEN LIT switch.
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0
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1
ON ELEVATING STAND
UNDER LIGHTED TABLE
SEE
DETAIL A
Figure II. Operating Controls and Indicators (Sheet 1 of 3)
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SEE
DETAIL F
SEE
DETAIL B
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rla~- 1 -/2
ON
15 AMP 0
0
0 OFF
LAMPS ON
Figure II. Operating Controls and Indicators (Sheet 2 of 3)
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ELEVATION
UP
TILT
UP
O
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0
Figure II. Operating Controls and Indicators (Sheet 3 of 3)
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Figure II
Index No.
Name
Function
1
Main circuit breaker
Controls all 117 vac power to
elevating stand and light table.
2
Drive bracket direction
Controls direction of rotation of
switch
drive mechanism on film transport
drive bracket.
CAUTION
? -
Do not change position when film
transport is operating or film
may be damaged.
3
TAKEUP-RELEASE
Adjusts length of film loop in looping
knob
mechanism from 0 to 76 inches.
NOTE
This is a dual control knob. The
front knob is for locking the
looping mechanism in the set
position and must be locked in
place prior to turning on film
control motors.
NOTE
In split mode, this knob is turned
to the maximum roller extension
position (fully cw).
4
X-axis limit stops
Manually adjustable C -clamp type
limit stops for limiting X-axis travel
of carriage.
NOTE
Not supplied with model MLT
1540-4.
5
Master power switch
Controls power to viewing surface,
(ON-OFF)
film transports, and carriage trans-
port. Does not control power to table
elevating and tilting mechanism.
6
Fuse (15 AMP)
Protects viewing surface, film trans-
port, and carriage drive circuits.
7
HOURS indicator
Elapsed time indicator recording total
no. of hours light table is in use.
8
MODE switch
Permits selection of operating mode:
NORMAL or SPLIT. In NORMAL
mode, one or two rolls of film are
viewed across full width of viewing
surface or one roll can be viewed
using 0 to 76 inch loop mechanism.
In SPLIT mode, one roll of film is
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Table 2. Controls and Indicators (Cont)
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Figure II
Index No.
8
(cont)
MODE switch
(cont)
Film transport control
switch (OFF-ON)
FILM SPEED control
DIMMING control
LAMPS ON switch
loaded on each side of light table and
threaded through rollers in center to
permit side by side comparison.
CAUTION
Do not change position when film
transport is operating or film
may be damaged.
NOTE
Solid lines on threading dia-
agrams indicate normal
threading with emulsion side of
film up; dotted lines indicate
normal threading with emulsion
down.
Controls drive motor in film
transport.
Controls film speed of film transport
in forward or reverse direction (0
center). Two range switch; when
pressed in, selects low speed range
(0 to 1 ips); when pulled out, selects
high speed range (0 to 100 ips).
NOTE
In NORMAL mode, controls on
left panel apply to front film
transport; controls on right panel
apply to rear film transport.
Controls intensity of illumination on
corresponding side of viewing surface.
Permits unused lamps to be switched
off from back to front on correspond-
ing side of viewing surface.
NOTE
Any time the LAMPS ON switch
is changed, the DIMMING control
must be momentarily turned to
full ccw position to allow lamps
to start properly,
Controls motor driven height of
table. Spring loaded UP-DOWN-
center off switch.
? I 13 I ELEVATION switch
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Table 2. Controls and Indicators (Cont)
Figure II
Index No.
Name
Function
14
TILT switch
Controls motor driven tilt of table.
Spring loaded UP-DOWN-center off
switch.
15
Fine scope focus knob
Permits fine adjustment of focus on
microstereoscope.
16
Coarse scope focus knob
Permits coarse adjustment of focus
on microstereoscope.
NOTE
Scope mount may be raised by
lifting mounting mechanism
and overriding focus knobs.
Clutches will lock scope mount
in position when released.
NOTE
Identical focus controls are
provided on both right and left
sides of scope mount.
17
X-LOCK REL switch
When table not tilted permits carriage
to be moved manually in X and Y
directions when set to REL, when
table tilted it allows motion only in X
direction.
18
Y REL WHEN LIT
Permits carriage to be moved manu-
pushbutton
ally in X and Y directions when lit
(table not tilted or Fail Safe Override
switch ON) and pressed.
19
Carriage speed control
Permits adjustment of speed of
motorized carriage transport
mechanism.
20
DIRECTION control
Spring loaded center off switch con-
trols translation of carriage transport
in X and Y directions.
21
Scope rotation lock
Permits scope to be locked in any
angular position from normal to
?45 degrees as indicated on agularity
decal.
22
FAILSAFE OVERRIDE
Permits Y-axis translation fail-safe
SWITCH
feature of carriage transport to be
overridden.
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2. 3. 4 Manual Carriage with Manual Elevating and Tilting Stand (Model
MLT1540-3).
Stand Not Tilted. The carriage may be moved manually in the X and
Y directions with a friction drag of 2 to 4 pounds.
Stand Tilted
a. May be moved manually in the X direction with a friction drag of
2 to 4 pounds.
b. May be moved manually in Y direction if:
(1) FAILSAFE OVERRIDE SWITCH is ON and
(2) Y REL WHEN LIT pushbutton is pressed.
CAUTION: Allow carriage to come to a complete stop before
releasing Y REL WHEN LIT switch.
2. 3. 5 Motorized Carriage (Normally Locked) with Power Elevating and
Tilting Stand (Model MLT1540-4).
Stand Not Tilted
a. The carriage may be motor driven in X and Y directions using
Carriage Speed and DIRECTION controls.
b. Y REL WHEN LIT indicator is on and carriage can be moved
manually in X and Y directions if:
(1) Y REL WHEN LIT pushbutton is pressed, or
(2) X LOCK-REL switch is set to REL.
NOTE: It is not necessary to operate FAILSAFE OVERRIDE SWITCH'
to move carriage manually in X direction.
Stand Tilted
a. The carriage may be motor driven in X and Y directions using
Carriage Speed and DIRECTION controls.
b. The carriage may be manually moved in the X direction if:
(1) The X LOCK-REL switch is set to REL, or
(2)
The Y REL WHEN LIT pushbutton is pressed.
NOTE: It is not necessary to operate FAILSAFE OVERRIDE SWITCH
to move carriage manually in X direction.
?
c. The carriage may be manually moved in the Y direction if:
(1) The FAILSAFE OVERRIDE SWITCH j is set to OFF, and
(2) The Y REL WHEN LIT pushbutton is pressed.
CAUTION: Allow carriage to come to a complete stop before
releasing Y REL WHEN LIT switch.
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 Approved For Release 2005/06/23 : CIA-RDP78BO5171A000400030067-7
2. 4 Manual Elevation of Stand.
Both power and non-powered stands may be elevated by means of a crank
which is stored on a clip at the end of the gear box housing below the light
table. To manually adjust the height of the stand:
a. Remove the hand crank from the storage clip and engage in the drive
shaft at the right side of the box housing.
b. Press in on the crank to engage the drive clutch.
C. Rotate the crank to adjust the height of the stand.
2. 5 Operating Instructions.
CAUTION: Before operation or film loading, verify that film transport
drive switches are OFF and that fail safe override switch is
OFF and guard is closed.
2. 5. 1 Normal Mode, Without Loop. Proceed as follows:
a. Load film on light table as described in paragraph 2. 6. 1.
b. Check that main circuit breaker (1, fig. II) is on.
c. Place X-axis limit stops on scope carriage as required.
d. Set master power switch to ON,
e. Set MODE switch to NORMAL.
f. Set FILM SPEED control to center off positions and to low-speed
range (knob pushed in).
NOTE: Control panel on right side of stand controls rear film path.
Control panel on left side of stand controls front film path.
With DIMMING controls set at minimum (ccw), set LAMPS ON
switches to number of lamps required and then set intensity as
desired with DIMMING controls.
h. Set ELEVATION and TILT switches for desired position of table,
i. Set film transport control switch(es) to ON.
Use FILM SPEED control to adjust direction and speed of film
transport.
k. Move scope carriage manually or with motorized drive as
described in paragraph 2. 3.
2. 5. 2 Normal Mode, With Loop. Proceed as follows:
a. Load film on light table as described in paragraph Z. 6. 2.
b. Check that main circuit breaker is on.
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?
?
c. Place X-axis limit stops on scope carriage as required.
d. Set master power switch to ON.
e. Set MODE switch to NORMAL.
f. Set FILM SPEED control to center off positions and to low speed
range (knob pushed in).
With DIMMING controls set at minimum (ccw), set LAMPS ON
switches for number of lamps required and adjust DIMMING
controls for intensity desired.
h. Set ELEVATION and TILT switches for desired position of table.
i. Adjust size of loop from 0 to 76 inches with TAKEUP-RELEASE
knob.
NOTE: Film loop control must be locked in place prior to
turning on film transport. Otherwise, normal film
tension is sufficient to cause a change in loop setting.
Set film transport control switch to ON.
k. Use FILM SPEED control to adjust direction and speed of film
transport.
1. Move scope carriage manually or with motorized drive as
described in paragraph 2. 3.
2. 5. 3 Split Mode. Proceed as follows:
a. Load film on light table as described in paragraph 2. 6. 3.
b. Check that main circuit breaker is on.
c. Place X-axis limit stops on scope carriage as required.
d. Set master power switch to ON.
e. Set MODE switch to SPLIT.
NOTE: Control panel on right side of stand controls film loop on
right side of stand. Left control panel controls left film
loop.
f. Set FILM SPEED control(s) to center off positions and to low
speed range (knob pushed in).
g. With DIMMING controls set at minimum (ccw), set LAMPS ON
switches for number of lamps required and adjust DIMMING
controls for intensity desired.
h. Set ELEVATION and TILT switches for desired position of table.
i. Set film transport control switches to ON.
j. Use FILM SPEED control to adjust direction and speed of film
transport.
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k. Move scope carriage manually or with motorized drive as
described in paragraph 2. 3.
2. 6 Mounting Film
NOTE: When mounting 70 mm film, install anti-wander guides
at ends of stand and engage in guides (2 each end, if
required).
2. 6. 1 Normal Mode, Without Loop. Proceed as follows:
a. Place one or two film drive brackets on top rail at each end of
light table with one idler bracket between drive brackets. (See
figure III. )
b. Position brackets as close to front of table as possible aligning
detents for required film size. (See figure III. )
NOTE: Line up drive brackets so that red dots on bracket and light
table match; line up idler bracket so that green dots match.
?
c. Lock brackets in position with locking levers.
d. Set drive bracket direction switches (2, fig. II) to correct posi-
tions for film spools used so that switch position pictogram
matches loaded film spool.
e. Mount film spool(s) on one side of table using retractor lever to
retract film spool drive spindle. Align spindle with film spool
and release lever. Mount takeup reel(s) on other side.
CAUTION: Be sure that film transport control switches are OFF.
f. Plug front drive bracket power cable into FILM DRIVE UPPER
receptacles and plug back drive brackets into rear FILM DRIVE
receptacles.
Thread film(s) under top roller, across viewing surface, under
top roller on other side of table and into takeup reel as shown on
MODE switch threading diagram for NORMAL mode.
2. 6. 2 Normal Mode, With Loop. Proceed as follows:
CAUTION: Only one reel of film can be viewed at a time using
looping mechanism. Threading two reels of film into
looping mechanism may result in damage to one or
both films.
a. Place one film drive brackets and one idler bracket on top rail at
each end of light table.
b. Position brackets as close to front of table as possible aligning
detents for required film size.
? NOTE: Line up drive brackets so that red dots on bracket and light
table match; line up idler brackets so that green dots match.
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NORMAL MODE
is
SPLIT MODE
Figure III. Arrangement of Film Drive Brackets
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c.
Lock brackets in position with locking levers.
d.
Set drive bracket direction switches to correct positions for film
spool used.
CAUTION: Be sure that film transport control switches are OFF.
e. Mount film spool on one side of table using retractor lever to
retract film spool drive spindle. Align spindle with film spool
and release levers. Mount takeup reel on other side.
f. Plug drive bracket power cables into FILM DRIVE UPPER
receptacles.
g. Thread film under top roller, across viewing surface, under top
roller on other side of table and into takeup reel as shown on
MODE switch threading diagram for NORMAL mode.
h. Raise right hand roller in center of table by pressing on right
side of hinge mechanism (figure IV). Raise left hand roller by
lifting it straight up.
i. Rotate TAKEUP-RELEASE knob fully counterclockwise until
lower rollers on loop mechanism are above viewing surface.
?
Snap out lower rollers (spring loaded snaps on front ends), place
them over film, and snap back into place.
k. Rotate TAKEUP-RELEASE knob clockwise to lower center rollers
and then close top rollers.
1. Film is now threaded as shown in figure III.
2. 6. 3 Split Mode. Proceed as follows:
a. Place one film drive bracket and one idler bracket on top rail on
each side at the front.
b. Place one film drive bracket and one idler bracket on bottom rail
on each side directly under top brackets. (See figure III. )
c. Align detents for required film size and lock brackets in position
with locking levers.
d. Set drive bracket direction switches to correct positions for film
spools used.
CAUTION: Be sure that film transport control switches are OFF,
e. Plug drive bracket power cords into FILM DRIVE UPPER and
LOWER receptacles on front of table.
f. Mount film spools on top brackets using retractor lever to
retract film spool drive spindle. Align spindle with film spool
and release lever. Mount takeup reels on bottom brackets.
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40
FRONT CENTER OF
LIGHT TABLE
TOP VIEW
LEFT.
HAN D
ROLLER
RIGHT
HAND
ROLLER RIGHT VIEWING SURFACE
LEFT VIEWING SURFACE
o O
PRESS HERE TO RAISE
RIGHT HAND ROLLER
Figure IV. Normal Mode with Loop, Film Loading Diagram
g. Open door on bottom of light table by releasing knob on each end
of door at front.
h. Raise right-hand roller in center of table by pressing on right
side of hinge mechanism. Raise left hand roller by raising it
straight up.
i. Rotate loop control knob to extreme clockwise position to prevent
film from dragging on inside of cover.
?
Thread film under top roller on end of table, across to center of
viewing surface, down through center rollers, above takeup
roller under bottom roller on end of table, and onto takeup reel
as shown on MODE switch threading diagram for SPLIT mode.
k. Repeat step j for film on other side of table.
1. Close center rollers.
m, Check each film path to verify that film is not rubbing.
n. Close and latch bottom cover making certain film clears edge of
cover,
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is
WARNING: HIGH VOLTAGES ARE PRESENT INSIDE THE ELECTRONICS
ENCLOSURE AT THE REAR OF THE STAND. OPERATORS
SHOULD NOT OPEN THIS ENCLOSURE.
3.
1
Cabinet. The light table cabinet should be dusted off and the external
surfaces cleaned daily. Vacuum the inside of the cabinet weekly.
3.
2
Illumination Surfaces. The glass illumination surfaces on the light table
should be cleaned as often as needed. Fingerprints, emulsion accumulation,
and dirt, if allowed to accumulate, will not only impair film resolution, but
could damage viewing and film surfaces. Material needed for cleaning the
viewing surfaces consists of:
Soft nonabrasive lens tissue
Distilled water
Sponge
Liquid detergent (Dreft, Lux, or equivalent)
Camel-hair brush (1-1/2 inches)
?
3. 2. 1 Cleaning Instructions. Proceed as follows:
a. Brush off any dust or dirt accumulation with the camel-hair brush.
b. Moisten a soft lens tissue in a soap and water cleaning solution of
one teaspoon liquid detergent in one pint of distilled water.
Squeeze out excess liquid to avoid water running into transport
bearings and lamps.
c. Rub the lens tissue gently with minimum pressure on the glass
surfaces until clean.
d. Rinse the glass surfaces by sponging with distilled water. (Be
careful that excess liquids do not seep beneath the glass
surfaces. )
e. Dry the glass surfaces with dry lens tissue.
3. 3 Roller Cleaning. Wipe the rollers with a clean damp cloth each time the
illumination surfaces are cleaned. The same solution used for the illumina-
tion surface cleaning should be used to dampen the cloth.
Rinse using a second cloth dampened with distilled water.
CAUTION: Use only damp-dry cloths, not dripping cloths. Do not thread
? film on the table until all rollers and surfaces are completely
dry or damage to the film may result.
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3. 4 Film Tracking. Improper film tracking will cause film to rub against the
side of the film reels with such severity that the film will curl at the edges.
If this is observed, notify maintenance personnel before film damage occurs.
3. 5. 1 The ball slides should be inspected daily and any foreign material
should be removed to insure continued free slide motion.
3. 5. 2 The ball type slides used in the carriage X and Y motion and the
vertical microscope mount motion mechanisms must periodically be
manually reset to allow full travel in all directions. Should travel
become limited in any direction:
a. Check to insure that foreign obstruction is not creating problem.
b. For X and Y motion limitation manually force (if more than
15 pounds force required contact maintenance personnel) the
slide to its limit.
c. For microscope elevation reset, the upper limit may be reset
by forcing the mount to its upper extreme. The lower limit must
be reset by applying approximately 10 pounds force in the down-
ward direction and cranking the mount to its lower limit.
?
?
3. 6 Operator Maintenance Chart
As Required
Daily
Weekly
Illumination Surfaces
X
C
bi
t
External
X
X
a
ne
Internal
X
X
Film Tracking
X
Roller Cleaning
X
Ball Slides
Inspection
X
Resetting
X
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4. 1 General. In the event of any emergency which appears to present potential
damage to the light table or the film, immediately shut off all electrical
power to the affected circuits. If in doubt, switch the main circuit breaker
to OFF. The main circuit breaker is mounted on the elevating table under
the back center of the viewing surface. Notify maintenance personnel before
attempting to use the light table further.
24
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 ITEM
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SPARE PARTS - 1540 LIGHT TABLE
PART NAME PART No.
QUANTITY PRICE
Viewing Glass Assy.
Film Drive
Transformer
Control Box Assy.
Control Box Assy.
Lamp Socket Center
-Board P.C.
Lamp Socket
Right Board P.C.
Lamp Socket End
Left Board P.C.
Bias P.C. Board
600265
600304-1 & -2
600187
600250-1
600250-2
-6-00176
600163-2
600163-1
5 ea side
6 each
4
5
5
-4
Assy.
600171
2
10
Isolation Transformer
600386-1
2
11
Control Transformer
600190
4
12
_-'_Bias'_ Transformer
-600181
---4
13
Film Drive P.C. Brd.
600l42
5
14
Intensity Control
P.C. Board
-.600143.
15
Compensator P.C.
Board
600144
16
Illumination Heat
Sink P.C. Board
600146
17
Film Drive Heat
Sink P.C. Board
600149
5
18-
-Lifter--Roller Assy.
-.,.-600260-1
-6
19
Lifter Roller Assy.
600260-2
6
20
Center Roller Assy.
600270-1
6
21
Center Roller Assy.
600270-2
6
22
Loop Roller Assy.
600272-1
6
23
Loop Roller Assy.
600272-2
6
24
Center Divider-Film
600375
20
_
25
_
Elevation Motor
-- 3I6P566B
1
26
Ball Screw Unit
08-022347
2
27
Circuit Breaker
UPG11-1-6-2o3
2
28
Speed Reducer
600130
2
29
.Flourescent Lamp
600004
40 cases
30
X-Y Power Transformer
600194
it
31
Cos. Pwr. Transformer
600192
It
32
Gear Motor
317A143-4
4
33
Y Drive Motor
VW59A1570:1
4 (3m'M, 12 VDC
34
Clutch Assy.
600429
4
35
Power Switch
LT1GK-50-1L-WH-
GN-A
6
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PART No. QUANTITY
PRICE
36
Mode SW Assy.
600185
10
37
Ilium. Reg. Bd.
600170
10
38
Brkt. Bridge Assy.
Switch & Speed
Controls
600221
10
39
Extender Card Assy.
600411
2
40
Covers L. H. YY Drive
600388
6
41
Covers R. H. YY Drive
600361
6
42
Timer
T4B
4
43
X-Y Control P.C.
600422-1
5
44
Clutch (X) Electroid
SBEC-17CC-4-5-12
4
45
X Bridge Stops Assy.
600290
10
46
Screw Captive
(item 34 drw. #600304)
6156U-SS-2520
24
47
Ball knob
(item 30 drw. #600304)
4901W/8-32 stud
24
48
Tachometer
(item 28 drw. #600304)
SA-740A-2
6
49
Slide
(item 33 drw. #600304)
Chain
600377
6
(item 16 drw. #600202)
.1475 pitch
10 ft
51
Connecting links
(item 19 drw; #600202)
.1475 pitch
12
52
Knob coarse
(item 21 drw. #600202)
600210
53
Knob fine
(item 23 drw. #600202)
S-907-1
54
Thumb screw
(item 52 drw. #600202)
600225-1
24
55
Cable retract
(item 35 drw. #600101)
600G-LA
56
Toggle switch
(item 22 drw. #600101)
7673K4
57
Toggle switch
(item 23 drw. #606101)
7569K74A27
58
Knurled screw
(item 5 drw. #600200)
600432
24
59
Cover motor
(item 9 drw. 600200)
600287
60
Track-slide
(item 13 drw. #600200)
600248
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ITEM PART NAME PART No. QUANTITY PRICE
61
Chain 320 pitch
(item 17 drw. #600200)
.25X80001g
2
62
Knurled head screw
(item 21 drw. #600200)
ADB25315
10
63
"Swivel nut
(item 22 drw. #600200)_
ADB25315
20
64
Motor
(item 24 drw. #600200)
600404
4
65
FAE clutch
(item 26 drw. #600200)
600429-2
4
66
Coilcord assy.
(item 57 drw. #600200)
600296-4
4
67
Coilcord assy.
(item 59 drw. #600200)
600296-5
4
68
Coilcord assy.
(item 60 drw. #600200)
600296-3
4
69
Illumination assy.
(item 2 drw. #600300)
600302-2
4
70
Support tube soc. board
(item 5 drw. #600300)
600307
6
71
Band sprocket pair
(item 62 drw. #600300)
600278
4 pr.
72
Track YY-LH
(item 55 drw.' #600300)
600247
6
73
Knob assy. take-up
(item 31 drw. #600300)
600363
10
74
Lock, take-up
(item 7 drw. #600300)
600310
10
75
Plunger
(item 140 drw. #600300)
H323-3-1-1
20
76
Grommet
(item 141 drw. #600300)
H559-3-1
20
77
Clutch, slip
.(item 146 drw. #600300)
OSD-131
4
78
Installation gear, take-up
.
(item 10 drw. #600300)
600427-2
20
79
Gear assy., cross drive
(item 11 drw. #600300)
600391-1
20
80
Guide
(item 40 drw. #600300)
600378-1
8
81
Guide wheel assy.
(item 17 drw. #600200)
600116
8
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T NAME
PART No. QUANTITY
PRICE
ITEPQ
PAR
82
Carriage Failsafe push
button and
switch
83
Control box
knobs
switches and
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 LINE ITEM
NUMBER
ITEM
FEDERAL
FEDERAL MANU-
MANUFACTURERS
QTY PER
SHELF
TOTAL
MA;
I..
NO. OF
END
NAME
STOCK NUMBER
FACTURERS CODE
PART NUMBER
END ITEM
LIFE
RECO/QTY
1'ACi
OP.
"EM
000)
'/iewh Glass A.-v.
14.10
5002.15
2
In.'
188
20
470
0002
is Ilost 'rocket A sy
142 M0
_00a4'
2
h .!
188
20
470
0003
film Dri. t.
14210
00:304= j
-4r .'.:
? :'
376
20
470
000
Tmnsf rner, mss: r.
142)0
600187
2
188
20
470
0005
Comrol rox Ass;'`
'002'0-1-
94
10
470
0006
Lamp Socket C.:ntr:r
acdsL?~
- r
Board P. C.
1.`.210
60017:
2
L,1
94
10
470
0007
Lamp Socket En:!
Ri:ht "oor1 P. C.
1'210
600163-?
1
47
10
470
0008
Lamp Socket E..
Left Board P. C.
14210
6001:3-1
1
In;
47
10
470
0009
Bias P. C. 3ocra
As'?:?
14210
600171
2
Its;
94
10
47
0010
lLolatic.r, 1rar.;' rear,
5 /r
1 ;210
500386-1
I
ir:i
94
20
475
0011 -
Co 'r:^?I i rar?sf:x:- r
sty
1'210
600190
Ind
188
20
470
0012.
^ias "rar:.forrrnr,,:,
1-210
!00181
1
Ir
94
20
470
0013
ni!m P. C
14210
6001-12
2
In '
94
10
47-1
0014
Int.'n-it..- Con,rrl
P. C. :cord
1^210
6001.'3
4
d
188
10
470
0015 .
CQF,pencatur P. C.
2ocr
1'x210
60014.4
1
It'd ?
47
1il
47:)
400rd-.. -_ _ ....
----~i42-4._.x-_-..
001!
Illumination ..cct
Sir.k P. C. `:oerj
14210
600146
4
Irrd
188
10
470
0018
Film Drive ;?c-at
Sink. ?. C. l~crr4
14210
600119
2
Ind
94
10
470
0019
Lifter Roller Arsyr.
14210
600260-1
1
Ind
47
10
470
0020
Lift-r Rc'ler A5 ;
14210
600260-2
1
Ind
47
10
470
00'1
Cc:;ter 3ollcr Arrv?
14210
600270-1
1
lr:;!
47
t0
470
0U..
Center ko;,t_r Asry .
14210
600270-2
1
47
10
x!70
0023
'
Loop RoI L:r A.