Video Cabling Glossary

Baseband cable: Coaxial cable used for a signaling technique in which one signal at a time is transmitted in original form, unchanged by modulation.
Broadband cable: Coaxial cable in which frequency division multiplexing divides a single physical channel into a number of smaller independent frequency channels.
Electromagnetic/radio frequency interference: Signal transmission or reception resulting from the radiation of electrical or magnetic electrical and magnetic fields.
Frequency-swept cable: Cable tested by manufacturers at listed frequencies to demonstrate attenuation properties.
Ground loop: Ground differential between a central power point and a device such as a video camera that causes transmission problems.
Impedance: The total opposition that a circuit, cable or component offers to alternating current. Including both resistance and reactance, impedance in generally expressed in ohms.
Noise: Any extraneous sound or signal in a cable or circuit that interferes with the sound or signal normally present in or passing through a system.