Glossary
Glossary of Terms
Adjust Flat Fld | Flat field test pattern used for shading purposes, |
| (adjusts in 7º increments). |
Amorphous | Without definite form; not crystallized. |
Arc Lamp | The xenon arc lamp in the Series 300 series projectors. |
| Produces dangerously intensive light with hazardous levels of |
| ultraviolet and infrared radiation. It operates at high |
| temperatures (180ºC, maximum 300º C, or over 500º F). |
Aspect Ratio | The ratio of the picture width to picture height. The standard |
| U.S. television aspect ratio is four units wide to three units |
| high (1:1.33). High Definition Television (HDTV) is 16:9. |
Bandwidth | The transmission or reception capacity of a computer or |
| communications channel measured in bits per second in |
| digital and in Hertz in communications. Bandwidth is the |
| difference between the lowest and highest frequencies |
| transmitted or received. Wider bandwidth provides more |
| information or picture detail capability. |
Blanking | Image adjustment used to mask out unwanted anomalies on |
| the picture edges. Blanking can be adjusted inward from 0% |
| on the left edge and top, and from 100% on the right edge and |
| bottom. |
Brightness | Overall or average intensity of illumination of a video display, |
| setting black at 0%. Used with Contrast adjustment for best |
| picture display. |
Contrast/Bright | Test pattern used as reference for brightness and contrast |
| settings. |
Channel List | Displays status of all active channels. |
Copy Channel | Projector function used to copy geometric and image |
| adjustment data from one channel to any or all of the other 29 |
| input channels |
Chrominance | Abbreviated as "C." Color information signal or signals. |
Model 330, 340SC, and 370SC Service Manual
