Glossary:

ATIS Telecom Glossary

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equivalent satellite link noise temperature

The noise temperature referred to the output of the receiving antenna of the Earth station corresponding to the radio-frequency noise power which produces the total observed noise at the output of the satellite link excluding noise due to interference coming from satellite links using other satellites and from terrestrial systems. [NTIA] [RR]

equivalent sheath kilometers

The product of (a) the length of a section of cable in kilometers (sheath kilometers) and (b) the ratio of the metallic content applicable to a particular group of conductors in the cable (e.g., conductors assigned to a category) to the metallic content of all conductors in the cable. [47 CFR Pt.36-A]

erase

1. To obliterate information from a storage medium, such as to clear or to overwrite.
2. In a magnetic storage medium, to remove all stored data by (a) changing the medium to an unmagnetized state or (b) changing the medium to a predetermined magnetized state.
3. In paper tape and punched card storage, to punch a hole at every punch… (Read More →)

erasure

[A] process intended to render magnetically stored information irretrievable by normal means. [INFOSEC-99]

erect position

In frequency-division multiplexing, a position of a translated channel in which an increase signal frequency in the untranslated channel causes an increase signal frequency in the translated channel. Synonym upright position.

ERL

Emergency Response Location

erlang

A dimensionless unit of the average traffic intensity (occupancy) of a facility during a period of time, usually a busy hour.
Note 1: Erlangs, a number between 0 and 1, inclusive, is expressed as the ratio of (a) the time during which a facility is continuously or cumulatively occupied to (b) the time that the facility is available for occupancy.… (Read More →)

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