Video Cameras: Theory and Servicing

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There is a need for literature which describes the technology of television cameras in an understandable language. This book was written to fulfill that need. -Learn about beam focus and deflection. Examine the elements of image conversion. -Read the characteristics and construction of a Vidicon tube and then learn about the other pickum tubes (Plumbicons, Saticons and Chalnicons). -Follow the discussion of lenses and light values, of signal processing, of black and white camera adjustments, of encoders and sync generators, of preamps and gamma correction, and of automatic light control from the technician's point of view. -Read of color dissectors and learn about camera alignment (for both single-tube and three-tube cameras). Finally, since no technical book is complete without a few troubleshooting hints, some explanations for flicker, excessive noise, poor resolution, color shading, deflection problems, and lens problems, etc. are given in the last chapter. All these explanations are designed to give you, the technician, a better understanding of video cameras and to provide a foundation for the many technical camera manuals that abound.

Author(s): Gerald P. McGinty
Series: Second printing
Edition: First edition
Publisher: Howard W. Sams & Co.
Year: 1987

Language: English
Commentary: My first time uploading, if any issues occur contact me: [email protected]
Pages: 254
City: Indianapolis

Chapter 1 - 11 - Elements of Image Conversion, The Charge Image - Beam Current Adjustment - Scanning - Camera Block Diagram - Summary
Chapter 2 - 19 - Vidicon Construction, Target Construction - The Electron Gun - Summary
Chapter 3 - 25 - Beam Focus and Deflection, Electrical Focus - Actions of Electrons in a Magnetic Field - High Voltage Guns - Deflection - Summary
Chapter 4 - 39 - Vidicon Characteristics, Dark Current - Lag - Spectral Response - Resolution - Gamma - Spurious Signals - Image Burn - Precautions With Vidicons - Flicker - Summary of Vidicon Characteristics
Chapter 5 - 51 - Other Pickum Tubes, Plumbicons - Saticons - Newvicons - Chalnicons - Charge Coupled Device (CCD) Image Sensors
Chapter 6 - 65 - Lenses and Light Values, Basic Lens Action - Field of View - Lens Speed - Lens Mounts - Light Measurements - Illuminants and the Kelvin Scale - Automatic Focus
Chapter 7 - 83 - Basic Black and White Camera Adjustments, The Test Bed - Pickup Tube Replacement - Traget Voltage Adjustment - Beam Current - Focus - Beam Alignment - Deflection Size and Linearity - Video Adjustments
Chapter 8 - 97 - NTSC Color From the Camera Standpoint, And RGB System - Constant Luminance - Chrominance Multiplexing - I and Q Encoders - Choosing the Subcarrier Frequency - Color Synchronization and Color Bars - Camera Balance
Chapter 9 - 109 - Color Dissectors, Early Systems - Dichroic Mirrors - Summary of Dichroic Dissector Characteristics - Single Tube Color Dissectors - Summary of Single Tube Dissectors - Color Correcting Filters
Chapter 10 - 125 - Preamps and Gamma Correction, Preamplifiers - Summary of Preamp Characteristics - Gamma - Gamma/Degamma Summary
Chapter 11 - 137 - Signal Processor, Static Shading Correction - Dynamic Shading Correction - Automatic Black Level Control - ABL Summary - Gamma Correction - Color Balance, Manual and Automatic - White Balanmce Summary - White Clip and Knee Circuits - Sensitivity Switches
Chapter 12 - 151 - Enhancement, Horizontal Contouring - Vertical Contouring - Noise Slicers - Video Level Dependence - Other Uses of Contour Correction - Summary of Contour Correction
Chapter 13 - 159 - Encoders, Internal Color Bar Generators - I and Q Encoders - I/Q Encoder Summary - R-Y/B-Y Encoders - R-Y/B-Y Encoder Summary
Chapter 14 - 173 - Automatic Light and Beam Control, Automatic Light Control - Automatic Sensitivity Control - Automatic Beam Control
Chapter 15 - 181 - Sync Generators, Random and Positive Interlace - Standart Sync - Sync Signal Summary - Color Sync Generators - Gen-lock
Chapter 16 - 195 - Camera Interface and Accessories, Portable VCR Control - Power - Viewfinders - Zebra Signal - Camera Audio - Camera Control Units
Chapter 17 - 209 - Three-Tube Camera Alignment, The Test Setup - Adjustment Sequence - Preliminary Adjustments - Focus, Beam and Deflection - Preamp Equalization - Beam Current - Bias Lighting - Static and Dynamic Shading - Signal Processor Alignment - Encoder Alignment
Chapter 18 - 225 - Single-Tube Camera Alignment, Equipment Needed - When There's No Color It's Green - Beam Current and Focus - Deflection - Shading and Dynamic Focus - Signal Processing - Encoder Adjustments - Setting Subcarrier Frequency
Chapter 19 - 241 - Troubleshooting, Precautions - No Picture - Poor Resolution - Excessive Noise - Flicker - Deflection Problems - No Color - Colorimetry Error - Color Shading - Color Comet-tailing or Lag - Beats and Interference in the Picture - Lens Problems
Appendix A - 251 - IRE Units
Appendix B - 253 - Coaxial Cable, Characteristic Impedance - Terminations - Loop Through - Cable Losses