552 PRODUCT IMPROVEMENT

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002100090009-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: November 26, 2001
• Sequence Number: 9
• Publication Date: November 19, 1963
• Content Type: REQ

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Approved Foolease :M_*Ti M$LCIA-RDP78BO470
210009
9-1
C 52 PRODUCT IMPROVEMENT
-Increase capability and flexability of present 552 Stereo Viewer
Marking System by modifying same to include automatic digital
40 comparator features.
DECLASS REVIEW by NIMA/DOD
Approved For Release 2002/01/02 : CIA-RDP78BO4747AO02100090009-1
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Approved Fo Iease 2002/01/02 : CIA-RDP78B0474 210009099-1
STATINTL
GN1:
Automatic X-Y coordinate measurements of photo points are provided by
four (4) shaft position incremental encoders, driven by precision lead screws,
one for each axis.
Measurement data or pulses from encoders are fed to up down counters and
simultaneously presented on a digital display.
SCREWS:
Precision ground ball lead screws 2?n pitch; 5 microns per foot lead error.
Maximum thread to thread lead error 0.7 micron at nominal 70?F.
ENCODERS:
Incremental-ma?;netic pulse type shaft encoders are used to insure maximum
reliability and minimum downtime. These encoders are connected to the precision
lead screws through flexible couplings to insure zero backlash. Each revolution
of the encoder generates 1,000 counts or pulses. Each pulse represents linear
X-Y-distance of 2? microns at film plane. Shielded cables carry the pulse signals
to the respective counters.
COUNTERS :
The pulses from each encoder are totalized in the appropriate X-Y axis
counters and displayed on the nixie tube banks. Solid state counters and power
supplies with modular type construction guarantees maximum reliability and
serviceability. These transistorized packages will count up and down from zero
at rates greater than 10,000 cycles per second. Counters can be reset to zero.
Approved For Release 2002/01/02 : CIA-RDP78BO4747AO02100090009-1
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Approved For Lease 2002/01/02 : CIA-RDP78B04747 1000900A&,`1
DI SPLAYS :
STATINTL
Four (4) banks, one for each format axis, of 6 digit each (nixie lamps),
display coordinate measurement data in i" illuminated numerals.
CONTROL:
ON-OFF power switch and zero reset switch is located at operators control
panel. Power 110/120 volt ac 60 cycles.
SYST$t1 PERFORMA.NCE :
Digit bit size 2~ microns
Maximum speed 1" per second
RUM OBJECTIVE :
The system will be designed to obtain repeatability of 2k microns
Accuracy 2k microns plus .0005% of distance travelled.
S CIFIED ACCU_RACI:
Accuracy 5 microns plus .01% of distance travelled.
Approved For Release 2002/01/02 : CIA-RDP78BO4747AO02100090009-1
 Approved For Release 2002/01/02 : CIA-RDP78BO4747AO02100090009-1
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Appro ed ForSease 2002/01
600 r~
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