Appendix E
Glossary
This glossary covers terminology used in the manual, as well as other terms,
that will help to clarify discussion and procedures in the manual. Sources
include Acterna proprietary documents; the Jones Dictionary for Cable
Television and Information Infrastructure, 4th Edition; and the IEEE Standard
Dictionary of Electrical and Electronic Terms, 4th Edition, and other
electronics authorities.
Analogue-VSB Vestigial Sideband Modulation: prescribed partial
suppression of one of the sidebands. This technique uses less bandwidth
than double sideband transmission, and preserves the signal’s waveform.
Amplitude Modulation Amplitude of the high-frequency carrier varies
according to the instantaneous value of the low-frequency modulating signal.
Baseband The band of frequencies occupied by the signal in a carrier
before the signal is modulated in the carrier to form the transmitted signal.
BPF Band Pass Filter
Bursty Data streams that are sporadic: bursts of data transmission
interspersed with periods of little or no activity.
BW Bandwidth: A measure of information-carrying capacity of a
communications channel. BW is the difference between the highest and
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