Copy of `Wave Corrector - Glossary of Cable Engineering Terms`
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Wave Corrector - Glossary of Cable Engineering Terms
Category: Sciences > Sound
Date & country: 15/11/2007, UK
The reduction in amplitude of an electrical signal due to a transmission line or other network.
The factor relating transmission line Â attenuation to unit distance.
A measure of the inequality of attenuation between two pairs in a multi-pair cable.
Balance about earth
See Common Mode Conversion Ratio.
A transmission line in which the two conductors are electrically identical and symmetrical with respect to a common reference point, usually earth.
A transformer device used for matching balanced and unbalanced circuit elements.
A measure of the ability of two conductors to store electric charge.
A measure of the inequality of capacitance between the conductors of two adjacent pairs in a multi-pair cable.
The terminal impedance that a transmission line tends towards as its length tends to infinity.
A transmission line in which one conductor is located at the centre Â of a metal tube which acts as the second conductor.
Common mode conversion ratio
A measure of the balance of the two conductors of a pair with respect to earth.
The real (non-reactive) part of the admittance of a circuit, where admittance is the reciprocal of impedance.
Interference that occurs because of inductive or capacitive coupling.
Power losses due to the resistance of conductors.
Power losses due to the resistance of copper conductors.
The unwanted coupling of signals between different pairs in a cable.
See Crosstalk Ratio.
The decibel difference between the level of a wanted signal on a transmission line and an unwanted signal caused by crosstalk.
The ratio of crosstalk signal level to the level of the originating source of the crosstalk.
A logarithmic unit used for expressing the ratio of two powers.
A material which acts as an electrical insulator.
Power losses due to the conductance of dielectric materials.
Currents induced by unwanted inductive coupling between adjacent conductors.
A metal shield which isolates a device from external fields.
The capability of different electrical systems to coexist in the electromagnetic environment without causing or being subjected to interference.
Far end crosstalk ratio
Crosstalk measured at the far end of a transmission line.
The electromagnetic field which exists at a distance of several wavelengths from the source of radiation.
The complex ratio of voltage to current.
The property of a conductor whereby a voltage is induced into it as a result of a changing current.
The loss in power caused by the insertion of a network between a source and a load.
A propagation mode in which the two conductor of a pair act as a single conductor.
A method of evaluating the propagation delay of a transmission line.
The loss of power delivered into a load as a result of the interconnection of devices having unequal impedances
Near end crosstalk ratio
Crosstalk measured at the transmit end of a transmission line.
The electromagnetic field that exists within one wavelength of a source of radiation.
A logarithmic unit used for expressing the ratio of two voltages.
A measuring instrument for evaluating the complex characteristics of linear electrical circuits.
The factor relating phase to distance.
The factors relating distance to the basic electrical properties of transmission lines.
The complex factor which resolves into the attenuation and phase coefficients of a transmission line.
The time required for a signal to pass along a transmission line
The velocity of wave propagation along a transmission line.
The redistribution of current in a conductor brought about by the proximity of another conductor.
A series of four separately insulated conductors, generally twisted together.
Regularity return loss
See Structural Return Loss.
The real (non-reactive) part of the impedance of a circuit.
A measure of the inequality of the resistance of the two conductors of a transmission line.
The difference between the power incident upon a discontinuity in a transmission system and the power reflected from the discontinuity.
See Electrical Screen.
The decibel difference between the signal level present at the input of a device, and the radiated power originating from the device.
Attenuation and phase coefficients and characteristic impedance of a transmission line.
A measure of the inequality of propagation delay between two pairs in a multi-pair cable.
The tendency of alternating currents to increasingly flow nearer the surface of a conductor as frequency increases.
Structural return loss
A measure of the uniformity of a transmission line's impedance.
Surface transfer impedance
The ratio of the voltage developed across a transmission line to the current flowing on the outer surface of the screen.
A pair of conductors separated by a dielectric.
A propagation mode in which the two conductor of a pair carry equal and opposite currents.
A transmission line in which two insulated conductors are twisted together.
A transmission line in which the voltages on the two conductors are unequal with respect to earth.
The ratio of propagation velocity to the speed of light.