ANSI SCTE 15-2016 pdf download.Specification for Trunk, Feeder and Distribution Coaxial Cable
1.2. Scope
This specification applies to material, electrical and mechanical properties of seventy-five ohm coaxial cables as defined herein. Seventy-five ohm coaxial cables are used to distribute radio frequency (R.F.), digital signals and power as applicable.
2. Normative References
The following documents contain provisions, which, through reference in this text, constitute provisions of this document. At the time of Subcommittee approval, the editions indicated were valid. All documents are subject to revision; and while parties to any agreement based on this document are encouraged to investigate the possibility of applying the most recent editions of the documents listed below, they are reminded that newer editions of those documents might not be compatible with the referenced version.
4. Compliance Notation
This word or the adjective“required’ means that the item is an absolute requirement of this document. This phrase means that the item is an absolute prohibition of this document. This word means the value specified shall never be used. This word or the adjective“recommended’ means that there may exist valid reasons in particular circumstances to ignore this item, but the full implications should be understood and the case carefully weighted before choosing a different course. This phrase means that there may exist valid reasons in particular circumstances when the listed behavior is acceptable or even useful, but the full implications should be understood and the case carefully weighed before implementing any behavior described with this label. This word or the adjective“optional?’ means that this item is truly optional. One vendor may choose to include the item because a particular marketplace requires it or because it enhances the product, for example; another vendor may omit the same item. Use is permissible for legacy purposes only. Deprecated features may be removed from future versions of this document. Implementations should avoid use of deprecated features.
5.1. Material
The center conductor shall be copper clad aluminum (CCA). The outer layer of copper shall be metallurgically bonded and continually cover the aluminum core prior to processing, the composite conductor shall meet the requirements of ASTM B 566- Class 10A or 10H. Solid copper center conductor may also be available, if required by the user. Low DC resistance is the only advantage to using solid copper; therefore, this document will only cover the copper clad aluminum.
5.2. Joints
Factory joints in the finished product shall be allowed. The ultimate tensile strength in the joint area when tested per ASTM E-8 shall be 90% of the original unspliced wire.
6.1. Foam Dielectric Material
Dielectric material extruded over the center conductor shall be an insulating grade virgin polyethylene and shall not contain reground, reprocessed or recycled materials. The insulation shall consist of gas injected foamed polyethylene with a closed cell structure. It shall be applied concentrically and bonded to the center conductor. The dielectric shall also contain a stabilization package to meet the requirements of section 13.5Thermal Oxidative Stability (TOS) when measured per IPS TP-119. Unless otherwise specified, polyethylene materials for the dielectric shall meet all applicable requirements of ASTM D 1248 and requirements of this document. The test utilizes insulation removed from the completed cable and tested at 180 °C ± 0.3 °C. Care should be taken not to include any adhesive or precoat on the dielectric specimen. Requirements for OIT – Initial: 20 minutes minimum, after aging: 70 percent of initial value.ANSI SCTE 15-2016 pdf download
