PHOTO- 
MULTIPLIER 
TUBE 
LEFT S 7 
DIAPOSITIVE X PARALLAX 
PHOTO- 
MULTIPLIER 
TUBE 
CATHODE-RAY 
TUBE 
  
ANTISCREEN 
NOISE 
   
  
  
<> 
  
  
  
  
| 
  
  
  
  
VIDEO CORRELATOR AND 
DISTORTION ANALYZER 
  
  
  
  
Z MOTOR 
X AND Y DEFLECTION 
  
| Yr PARALLAX 
  
  
ADAPTIVE 
CONTROL 
CIRCUITS 
  
  
rl 
  
  
  
  
  
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