IEEE 802.7-1989

This document specifies the physical, electrical, and mechanical characteristics of a properly designed IEEE 802.7 broadband cable medium. The characteristics described herein are intended as the minimum acceptable parameters for the design, installation, and test of an IEEE 802.7 cable plant. Single and dual cable systems are specified for the support of existing IEEE Std 802.3 b [1] and IEEE Std 802.4 [2] broadband devices.

These recommended practices may be used by the system purchaser as the basis for a purchase specification, by the system designer as the minimum set of design goals, and by testing and maintenance personnel to ensure adherence to the original requirements. The total anticipated system requirements (including future expansions) should be considered when defining the original system requirements. This ensures that future expansions will meet the specifications of the standard. It will be noted that unless otherwise stated, all specifications apply to the performance exhibited at user outlet port(s). By choosing this interface as a reference, a clear relationship is established between the specifications of the coaxial cable system and the characteristics of the attached devices. Furthermore, the internal operating characteristics of the cable plant may be chosen as to take advantage of particular architectures or types of hardware which may be more applicable in some installations than in others.

New IEEE Standard - Inactive-Withdrawn. Administratively Withdrawn. This standard specifies the design, installation, and test parameters for broadband cable medium. The medium supports the communication of IEEE 802.3b, IEEE 802.4, video, and narrowband radio frequency (RF) modem devices. The broadband bus topology consists of amplifiers, coaxial cable, and directional couplers that create a full duplex directional medium. Inbound signals flow from user outlet transmitters to a central headend location. The headend processes the signals and then transmits the signals via an outbound path to all user outlets.