Sound motion pictures : from the laboratory to their presentation (1929)

Page scan 000153 from Sound motion pictures : from the laboratory to their presentation

Record Details:

Title:
Sound motion pictures : from the laboratory to their presentation
Date:
1929
Publisher:
Garden City : Doubleday, Doran & Company, Inc.
Volume:
Sound motion pictures : from the laboratory to their presentation
Leaf #:
000153
Language:
English
Subjects:
Motion Pictures, Motion pictures--Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 22, 2024
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OPERATING MANUAL 133 make sure that the theatre horns are turned off by means of the output control key on the output control panel. 2. See that the storage batteries are switched on ready for use, as explained in the preceding section. See that the power safety switch is closed. 3. On the 42-A and 43-A amplifiers turn the starting switch to" Fil." 4. On the 41-A amplifier see that the filament key is on and adjust the filament control so that the pointer of the filament meter is at the middle of the red mark. 5. On the 42-A and 43-A amplifiers turn the starting switch to "Plate/; 6. On the 41-A amplifier press in turn the three buttons marked "Plate Current. " The meter marked "Plate" should read, in each case, not less than 1.35 nor more than 1.55 milliamperes. 7. On the 42-A and 43-A amplifiers each meter pointer should be on the red mark. 8. Turn on the horn safety switch. IV. type 2-SX-41 A. Preparation for Operation 1. See that the gain control dial is set as recommended by the Western Electric engineer. See that all switches are in the "off" position. Proceed as follows: 2. Operating battery panel: Set the control switch at "Operate" for the A-i and H-i batteries. Set the control switch at "Operate" for the F-i battery. 3. Close the A. C. line amplifier switch. 4. On the 43-A panel turn on the filament-plate switch to read"Fil." 5. On the 42-A panel turn on the filament-plate switch to read "Fa."