GPL Division Singer-General Precision, Inc. Singer Education & Training Products. Operation and Service Instruction Manual: Precision 990 Television Camera. Handbook Part. No. G5146-282. Table of Contents: Description and Leading Particulars, Installation and Operation, Theory and Maintenance, Electrical Parts List and a Glossary: Terms useful in Television Service Work (As Defined by EIA). List of Illustrations: Precision 990 Camera (Dimensional Drawing, Video Amplifier Module, Pulse and Deflection Module, Power Supply Module and Video Amplifer Module), Do's and Don't's on Use of Vidicons, How the Resolution Chart Should be Positioned on the Vidicon Target Area, Relationship Between the Top of Sync and Video Black Level, Video Signal When Pedestal Control is Properly Adjusted, Precision 990 Camera (Function Block Diagram, Video Amplifier Module: Location of Parts and Schematic Diagram, Pulse and Deflection Module: Location of Parts and Schematic Diagrams, Power Supply Module: Location of Parts and Schematic Diagrams, Main Frame: Component Location of Parts, Assembly and Schematic Diagram). List of Tables: Specifications and Features of the Precision 990 Film Chain Television Camera, Location and Function of Operating Controls and Adjustments.