Local area network cabling arrangement

Details Local area network cabling arrangement Local area network cabling arrangement

1988-03-21

1989-10-10

Nimmo, Morris H.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174 36, H01B 1104

Patent

active

048733938

ABSTRACT:
A cable (20) which is particularly suited to the transmission of substantially error-free data at relatively high rates over relatively long distances includes at least two pairs of individually insulated conductors (42--42). The pairs of individually insulated conductors are enclosed in a tubular member (51) comprising a plastic material. A metallic shield (54) may or may not enclose the tubular member, and in a preferred embodiment, a plastic jacket (58) is provided. The twist length of each pair of insulated conductors does not exceed a value equal to the product of about forty and the outer diameter of the plastic insulation. Further, the twist lengths among the conductor pairs are varied in accordance with a twist frequency scheme modulated by non-uniform increments of twist frequency.

REFERENCES:
patent: 3209064 (1965-09-01), Cutler
patent: 3271508 (1966-09-01), Burr
patent: 3546357 (1970-12-01), Mac Pherson
patent: 3882907 (1975-05-01), Degen
patent: 3894172 (1975-07-01), Jachimowicz et al.
patent: 4058669 (1977-11-01), Nutt et al.
patent: 4262164 (1981-04-01), Nutt et al.
patent: 4401845 (1983-08-01), Odhner et al.
patent: 4412094 (1983-10-01), Dougherty et al.
patent: 4697051 (1987-09-01), Beggs et al.
Electronic Wire and Cable, p. 32, an AT&T catalog dated Jan. 1988.

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