PHOTO-
MULTIPLIER
TUBE
LEFT S 7
DIAPOSITIVE X PARALLAX
PHOTO-
MULTIPLIER
TUBE
CATHODE-RAY
TUBE
ANTISCREEN
NOISE
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VIDEO CORRELATOR AND
DISTORTION ANALYZER
Z MOTOR
X AND Y DEFLECTION
| Yr PARALLAX
ADAPTIVE
CONTROL
CIRCUITS
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SCANNING
PATTERN
GENERATOR
X AND Y DEFLECTION
PHOTO-
MULTIPLIER
TUBE
DIAPOSITIVE
Fig. 2 — Schematic diagram of Itek EC-5 Electronic Correlator
PHOTO-
MULTIPLIER
TUBE
Y MOTOR
nl CATHODE-RAY
\ / TUBE
ANTISCREEN
NOISE