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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
This measurement indicates whether or not video signal levels are properly represented in the RF signal. The NTSC modulation scheme yields an RF signal that reaches its maximum peak-to-peak amplitude at sync tip (100%). In a properly adjusted signal, blanking level corresponds to 75%, and peak white to 12.5%. The zero carrier reference level corresponds to 0%. Refer to the diagram at the right. Over modulation often shows up in the picture as a nonlinear distortion such as differential phase or differential gain. ICPM or white clipping may also result. Under modulation often results in degraded signal-to-noise performance.
Industry:Entertainment
The process of rescaling the quantized discrete cosine transform coefficients after their representation in the bit stream has been decoded and before they are presented to the inverse DCT Deserializer
Industry:Entertainment
Refers to the most minute elements in a picture which are distinct and recognizable. Similar to Definition or Resolution.
Industry:Entertainment
Microcomputer system with all the facilities required for hardware and software development for a given microprocessor.
Generally consists of a microcomputer system, CRT display, printer, mass storage (usually dual floppy-disk drivers), PROM programmer, and incircuit emulator.
Industry:Entertainment
Software to enable a computer to access or control a peripheral device, such as a printer.
Industry:Entertainment
Amount of detail that can be perceived in a diagonal direction. Although diagonal resolution is a consequence of horizontal and vertical resolution, it is not automatically equivalent to them. In fact, ordinary television systems usually provide about 40 percent more diagonal resolution than horizontal or vertical. Many ATV schemes intentionally sacrifice diagonal resolution in favor of some other characteristics (such as improved horizontal or vertical resolution) on the theory that human vision is less sensitive to diagonal resolution than to horizontal or vertical. There is some evidence that diagonal resolution could be reduced to about 40 percent less than either horizontal or vertical (overall half of its NTSC value) with no perceptible impairment. See also Resolution.
Industry:Entertainment
An unusual quad split feature found on Ampex switchers, allowing diagonal or X-shaped divisions between sources, as opposed to the traditional horizontal and vertical divisions.
Industry:Entertainment
