Issue: 05/2011
3.1 Components Overview .............................. 18
3.1.1 Housing ............................................... 18
3.1.2 Projection Components Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Film Gate and Film Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.1 Film Pressure Skate ..................................... 19
3.2.2 The Dowser............................................ 20
3.2.3 Single Aperture Plates (only with manual lens turret or lens holder). 21
3.2.4 Aperture Changer (option, only with electronic lens turret) . . . . . . . . 21
3.2.4.1 Drive and Control........................................ 22
3.2.4.2 Format Change with Three Lenses . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.4.3 Format Change with Two Lenses Turret . . . . . . . . . . . . . . . . . . . . . . 22
3.2.4.4 Changing the Format Combination . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2.5 Lens Holder............................................ 23
3.2.6 Lens Turret (option)...................................... 24
3.2.6.1 Manual Lens Change..................................... 24
3.2.6.2 Electronically Controlled Lens Change (option). . . . . . . . . . . . . . . . . 25
3.2.7 Focusing .............................................. 26
3.2.7.1 Manual Focusing with Lens Turret / Lens Holder . . . . . . . . . . . . . . . 26
3.2.7.2 Electronic Focusing with Lens Turret (option) . . . . . . . . . . . . . . . . . . 26
3.2.7.3 Electronically Controlled Lens Holder Focusing (option) . . . . . . . . . . 26
3.2.8 Rotating Shutter......................................... 27
3.2.9 Intermittent Sprocket ..................................... 28
3.2.10 Framing ............................................... 28
3.2.11 Constant Speed Sprockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.3 Reverse-Scan Sound Device . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3.1 Analog Reverse-Scan Sound Device (non-upgradeable) . . . . . . . . . 30
3.3.2 Reverse-Scan Sound Device Analog and optional DOLBY Digital
(upgradeable) .......................................... 31
3.3.2.1 Components ........................................... 31
3.3.3 Sound Tracks on the Films . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.4 SDDS Reader / DTS Reader (option) . . . . . . . . . . . . . . . . . . . 32
3.5 Film Cleaner (option)................................ 32
3.6 Drive and Electronic Components . . . . . . . . . . . . . . . . . . . . . 33
3.6.1 Main Drive ............................................. 34
3.6.2 Intermittent Movement
(also called a Maltese Cross or a Geneva Movement) . . . . . . . . . . . 35
3.6.3 Friction Drives .......................................... 36
3.6.3.1 Take-Off Friction (non-driven) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.6.3.2 Take-Up Friction (driven) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.6.3.3 Electronically Controlled Friction Drives (option) . . . . . . . . . . . . . . . . 37
3.6.3.4 Reel Shaft on Change Flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37