LETTER TO SC&PB FROM(Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05171A000400030109-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: June 7, 2005
• Sequence Number: 109
• Publication Date: December 31, 1970
• Content Type: LETTER

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Approved Fo lease 2005706/23: CIA-RDP78BO51S000400030109-0
. . 0
REPLY REQUESTED
SP EED. LETT EIt
DATE __~..-.
31 December X70
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FO M:
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Engineering Support Division
ATTN:
1. The Preproduction Piodel, Split Format Light Table Model
ST A'
WILT 1540) I submitted under the terms of Contract No.
ST A'
is hereby rejected.
2. Attachment 1 is a list of defects found in the course of testing
Serial No. 001.
3. Certain unsatisfactory Quality Control conditions were found
during initial inspection of fourteen production tables. These conditions
are listed in Attachment 2.
4. It=is'requested that the Contractor provide the Contracting
Officer with his course of action conerning correction of the defects and
Quality Control conditions listed on the attachment.
ST
ST
`1o Deputy Chief
Engineering Support Division,.
TSG/NP
IC
SIGNATURE
REPLY
DATE
Declass Review by NGA/DoD
fsm
SIGNATURE
1~+ rm"Rns~ 7~ nnnnannn~n~ na-n
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T
FORM 1831 USE PREVIOUS
5-67 1 EDITIONS 3
 Approved For Release 2005/06/23 CIA-RDP78B05171A000400030109-0
List of Contractual Defects on Table Ser. No. 001
1. The table tilts by lifting the back of the unit and hinging
on the front. This creates a nutcracker effect at the hinge.
The tilt switch is located very close to the hinge; and it has
been determined that an operator could very easily suffer crushed
fingers while operating the switch.
2. The Y motion is locked when the table is tilted. This system
is actuated by a mercury switch. The adjustment required to.pro-
vide this locking feature just after tilting starts,. and to
release the lock after it becomes horizontal, is quite touchy.
? The prototype table is just as likely to be locked in the horizon-
tal position as unlocked. If this is relieved, the carriage may
start to roll forward when tilting occurs before locking takes
'place.
3. Using a gauge configured to show the maximum overall width of
a 6.6" film reel, it was found that interferences exist at all
reel stations. Further checks on the production models available
at that time showed\that 23 of 24 stations checked are too narrow
and will not accept the 6.822 inch dimension specified.
4. The cable which connects the focus mechanism to the power
supply and electronics at the back of the table prevents the
focus mechanism from realizing full travel to the back of the
? viewing surface.
Para. 3.6.5 (4) - Moving parts such as vertilati:
Jfans, drive belts, or gears, shall be s ?i elded,&.
enclosed to prevent inadvertent access by the
operator.
Para. 3.5.1.4.2 - A manual bridge furnished with-
tilting stand shall be provided with an optional
fail-safe override to prevent uncontrolled notice.
in the Y direction when the table is tilted.
move the carriage in the Y direction with the
horizontal, it shall be necessary only to relea:-
the Y friction lock. in a tilted position, a is .
safe interlock shall be activated preventing Y
translation unless the interlock is purposely
defeated.
Para. 2 - The table shall accommodate spools
ranging up to_.and including the size of spool
specified in Military Standard Mf26565-22 loaded
to capacity with film.
Para. 3.4.1.2 - With any of the microstereoscom'-
.- '.fixed in the mount, and using the center of the
scope as a reference, translation in the Y dir?ct
shall be adequate to cover the full 15" depth c_
the glass viewing surface.
5. Markers are provided on the table to aid in placing the motors
and idlers for various film configurations. The motors have --
matching markers on one side. However, the motors must be used in`
such a way that the side not containing the marker is in'view.
Consequently, markers must be placed on both sides.
Para. 3.3.1.2 - A visual reference scale and 00:
ing device with positive detents shall be prov_r
to allow accurate positioning of the brackets tc
hold the various width spools and assure accurwA,-.,
tracking across the glass viewing surfaces cf tb7~
film parallel to the longitudinal axis of the 10_
table and to each other.
6. The MT is made in two parts, an elevating stand and the light Para. 2 - Provision ,hall be made for viewing....
table proper. If the light table is not put on the stand at the in-line viewing of two of the same widths, of
right place, or if it shifts while being transported, the lower 5", 6.6", or 9.5" wide film.
Approved For Release 2005/06/23 :'CIA-RDP78BO5171A000400030109-0
 Approved For Release 2005/06/23: CIA-RDP78BO5171A000400030109-0
cover is prevented from dropping by the tilt and elevating
switch housing. The lower cover will not open when the table
is tilted.
7. The mechanism which takes up the dead loop at the center of
the table employs cable guides which hold the actuating
mechanism in its track. These cable guides have profiles which
.prevent the looping. mechanism from reversing direction at one
point in its travel.
8. The lower cover latches are very difficult to operate, due
to their placement and design.
9. The illumination sources are not equal within 100 fL at,
maximum. The left measured 3225 fL max and the right 3010 f1 max.
The change in output of one side when the other is turned
completely down or up should not exceed 100 Q. This change was
measured to be 150 fL on the left side and 165 fL on the right
side.
10. The screws holding the pod in the optics mount do not
,provide adequate force to prevent unwanted motion.
Para. 2 - The table shall include a simple film .
looping mechanism which shall allow forming a it
of film below the table in order that separated
frames, on the same roll of film, may be arran.: ec-
adjacent to each other for convenient stereo
viewing. Looping of parallel rolls of film is V,
required. This mechanism shall be capable of r
forming a continuous film loop from 0 to 76 inc_:
Para 3.2.1.4 - All controls, including the fil
hand wheels (on the manual version), shall be
positioned so they can be easily manipulated.
this respect, it is understood that the location
of the controls, as supplied on the preproducic
model (when accepted), will be satisfactory,
Para. 3.1.1.1 - The maximum levels of the two
illumination sources shall not differ by more t.,,
100 foot lamberts at the time of this measuiemen:
With one of the two sources set at maximum or
minimum illumination level, there shall not be at
change of more than 100 foot lamberts in il1_uri .
. `,tion level of that source when the i l l umm nation: ''
level of the other source is adjusted thro'. ol,:: -.
its full range.
Para 3.5.1 - Mounting devices shall be suffi c'.O
rigid to preclude instrument misalignment and 1L
of collimation of the optics, with respect to the
viewing surface during normal handling and
operation.
11. There have been instances of evidence of poor quality con- Contract, Page 3, ACCEPTANCE - Final inspection
trol. a) The bearing track on the left side was not fastened and acceptance of articles shall be by demonstr
tightly. b) The plastic protector covers on the Y chain drives of successful performance and completion of test.,
dragged the chain and.arive elements., c) The power cord reel set forth in a mutually approved Acceptance Test
fell off of the unit. d) The tilt lock mercury switch was.not: Plan (ATP), which shall be provided for approval
set properly. two (2) weeks prior to commencement of tests on
Approved For Release 2005/06/23: CIA-RDP78B0517CAM06400030100 -e units of any item.
 Approved For Release 2005/06/23 : CIA-RDP78BO5171A000400030109-0
Para. 11 (continued)
Contract, Page 4, WARRAI`~TY OF SUPPLIES - All
supplies furnished under this Contract will
be free from defects in material , or tiw:or: anshi .
and will conform with the specifications arid al'_
other requirements of this Contract.
12. The color rendering index (CRI), correlated color temperature Para. 3.1.1.2
(CCT), and chromaticity aim points (X, Y) were measured for each
side and are listed below. CCT 5000+500K
CRI 70
Left Side Right Side X 0.31+5
Y 0.358
Test 1 Te'sct 2 Test 1 Test 2
CCT 5574 5689 5565 5706
CRI 57.69. 55.28 57.53 55.93-
x 0.3301+ 0.3278 0.3311 0.3275
Y 0.3626 0.3616 0.3659 0.3611+
EVALUATION BRA'QCH, ESD, TSG
Approved For Release 2005/06/23 : CIA-RDP78BO5171A000400030109-0
 Approved For ease 2005/06/23: CIA-RDP78B 7 00 OQP30109-0
:'ll
Non-Acceptable QC. Conditions found on 1st Inspection of 111 Procluct:i.on Tables,
1. Motor and Idler Tight on Rails
S/N 002, 003, 0011, 005, 006, 017, 022, 015, 026
Loop Take -'up Slipping
S/N 0011, 026 023, 017
3. Parallelism
S/N 002, 003, 004, 005, 006 (not checked on others)
It.
5?
Collimation
S/N 002, 003, 004, 005, 006 (not checked on others)
Covers Interferring with X&Y Travel
S/N 003, 004, 023, 016, 015, 022, 024
6. Spool Release on Motor Sticking
S/N 003
X&Y Drive Creep in Off Position
Sft 005, 006, 022, 004
Carriage Exceeds 4 lb Spec
S//N. 003, 004, 023, 016, 015, 022
Film Jerky in Slow Speed
S/N. 006, 023, 016, 015, 022, 017, 024, 014, 009
:Lo. Lamps not Working (flicker and tubes not corning on)
S/N.006, 004, 026, 023, 015, 022, 017, 0111
11. Glass Top Scratched
S/N Q26, 017, 024
12. Dimmer Switch Rough
/N- OOo, 003
13. Pod Ring Too Tight
s%N; 002, 003, 004, 005, 006, 016
14. No Light Control
S/N:026, 007
1...
Front Top Trim Rough
S/N: QTI.,' 026, 024, 016
STAT
EQUIPMENT PERFORNL4NCE BRANCH, ESD, TSG
Approved For Release 2005/06/23 : CIA-RDP78BO5171A000400030109-0