Field Programmable Gate Array

Abbreviation for forward propagation ionospheric scatter. See ionospheric scatter.

Abbreviation for frames per second. In video and television, the number of images contained in a single second of a moving picture.
Note: Thirty fps is considered full-motion video in NTSC systems, while 25 fps is considered full-motion in PAL and SECAM systems. Many proprietary video technologies produce 15 fps video; 24 fps is considered full-motion in motion-picture technology.

Frame Relay

A mathematical formula or algorithm that constitutes or defines an efficient way of formulating computer graphics. Fractal graphics translate the natural curves of an object into mathematical formulas, from which the entire image can later be constructed. Fractals are self-similar in that any piece of the fractal design contains a miniature of the entire design. A fractal is completely described… (Read More →)

Synonym fractional frequency offset.

The deviation of the frequency of an oscillator from its nominal constant frequency, normalized to the nominal frequency.

A measure of the deviation of the frequency of a signal from a reference, expressed as a ratio. The ratio is dimensionless but typically expressed as parts per million, ppm. For example,
4. 6 ppm =
4. 6/10
6. Fractional frequency offset = [(f-fr) / fr] where: f = the actual frequency output of the signal in question, and fr… (Read More →)

In telecommunications, a portion of the
1. 544 Mb/s (T1-aggregate) bit stream; the available fractions being determined by the type of multiplexer used to achieve the T1 aggregate bit stream.

1. The process in which an IP (Internet protocol) datagram is broken into smaller pieces to fit the requirements of a given physical network; the reverse process of reassembly.
2. The physical separation of portions of a file on a computer disk.