| The objective of this project was to
construct a Composite Video Pattern Generator, which can be used as a teaching tool in the
video field as well as a laboratory instrument, useful for repairing and adjusting
television receptors. This instrument is in no way intended to be a
commercial set, because I cannot guarantee all the specifications that a professional tool
must have. However, the result is a high quality video equipment.
Specifications
| Patterns: |
Color Bars, Raster, Cross-hatch,
Points |
| Controls: |
independent R, G, B, luminance,
chrominance and color burst |
| Video output: |
composite video, 1 Vp-p at 75 ohms load |
| Color system: |
PAL-N (option PAL-B/G/I, changing
chroma oscillator crystal) |
| Scanning system: |
Interlaced (Bars and Raster),
Non-Interlaced (Cross-hatch and Points) |
| Power supply: |
12 Vdc (8 x AA alkaline batteries) |
| Power consumption: |
70 mA maximum (White Raster) |
| Applications: |
television receptors adjustment
(purity, convergence, linearity, etc.), troubleshooting of video
section in television sets and video recorders, teaching of video generation techniques |
|