A dielectric cable contains no metallic components. Digital A data format that uses two physical levels to transmit information. A discrete or discontinuous signal. Direetivity Also referred to as near end crosstalk, it is the amount of power observed at a given input port with respect to an initial input power. The cause of bandwidth limitations in a fiber.
Dispersion causes a broadening of input pulses along the length of the fiber.
Distortion Limited Operation Generally synonymous with bandwidth limited operation. A two fiber cable suitable for duplex transmission. In a digital transmission, the ratio of high levels to low levels. EIA Electronic Industries Association. A standards association that publishes test procedures.