ANSI SCTE 177 pdf free download
ANSI SCTE 177 pdf free download.Specification for Braided 75 Ω, Mini-Series Quad Shield Coaxial Cable for CMTS and SDI cables.
2.2. Standards from Other Organizations
• ANSI/1JL1581-2017: Reference Standard for Electrical Wires, Cables and Flexible Cords.
• ASTM D1248-05: Standard Specification for Polyethylene Plastics Extrusion Materials For Wire and Cable.
• ASTM D 4565-99(2004): Physical and Environmental Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable.
• ASTM B33-04: Standard Spec ification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes
2.3. Published Materials
• IEC 61196-1-314: Coaxial communication cables – Part 1-314: Mechanical test methods – Test for bending
• IEC 62153-4-4: Metallic communication cable test methods – Part 4-4: Electromagnetic compatibility (EMC) – Shielded screening attenuation, test method for measuring of the screening attenuation as up to and above 3 GHz
• NFPA National Electric Code – NEC®-201 7 Article 800: Communication Circuits.
3. Informative References
The following documents might provide valuable information to the reader but are not required when complying with this document.
3.1. SCTE References
• ANSIJSCTE 69 2007: Test Method for Moisture Inhibitor Corrosion Resistance.
• ANSI/SCTE 166 2010: Flexure Method for Drop Cable Conditioning
3.2. Standards from Other Organizations
• ASTM Bl-0l(2007): Standard Specification for Hard-Drawn Copper Wire.
• ASTM B 193-02(2008): Resistivity of Electrical Conductive Materials.
• ASTM B3-01(2007): Standard Specification for Soft or Annealed Copper Wire.
• ASTM B566-04a: Standard Specification for Copper-Clad Aluminum Wire
3.3. Published Materials
• Jones Dictionary: Cable Television Terminology 3rd Edition.
• NFPA National Electric Code – NEC(g)-2017, Article 820: Community Antenna Television and Radio Distribution Systems.
• NFPA National Electric Code – NEC®-2017, Article 830: Network-Powered Broadband Communications Systems.
• IEEE: Standard Dictionary of Electrical and Electronic Terms
6. Center Conductor
Center conductor dimension shall be 0.0226±1% inches (0.574 mm ± 1%).
Solid copper or copper clad steel shall be specified.
Minimum break strength (MBS) of the solid copper center conductor shall be determined by multiplying the minimum cross-sectional area by 32,000 psi (221 MPa). MBS for 0.0226” solid copper conductor equals 13 lbf(57 N).
Minimum break strength (MBS) of the copper clad steel center conductor shall be determined by multiplying the minimum cross-sectional area by 95,000 psi (655 MPa). MBS for 0.0226” copper clad steel conductor equals 38 lbf( 169 N).
The center conductor electrical conductivity shall be 40 percent IACS minimum.
Maximum DC resistance shall be measured per ANSIJSCTE 442010 and shall be 51.0 ohms/l000 ft(167 ohms/km).
7. Dielectric
The dielectric shall contain a stabilization package to meet the requirements of section 10.2 Thermal
Oxidative Stability (TOS).
Unless otherwise specified, polyethylene materials for the dielectric shall meet all applicable
requirements of ASTM D 1248 and requirements of this document.
Nominal Dielectric Diameter — 0.100 inch (2.54 mm).
8. Shield Construction
8.1. Quadshield
8.1.1. Inner Laminated Shielding Tape (LST)
The first outer conductor shall be a LST bonded to the dielectric and to itself at the tape overlap. On the finished product, the LST shall overlap the dielectric circumference by a minimum of 18 percent.
The LST shall be applied longitudinally to the dielectric and shall be free of creases or twists over the entire length.
The average core diameter shall be determined by measuring the diameter over the LST in the finished
product as described in ANSI/SCTE 31 2016. Average core diameter — 0.107 ± 0.003 inches (2.72 ± 0.08
mm)
Core ovality shall be determined by subtracting the measured minimum diameter from the measured maximum diameter over the LST in the finished product. Core ovality maximum — 0.010 inches (0.254 mm)
8.1.2. Inner Braid Wires
The braiding wire shall be tin copper wire consisting of 36 AWG (0.005±0.0003 inches, 0.13±0.08 mm) maximum.
Minimum tensile strength for individual strands of tinned copper braid wire shall comply with ASTM B33 latest revision.
Braid coverage over the first outer conductor shall be a minimum of 64 percent. The braid coverage shall be determined by SCTE 51 2018.
8.1.3. Outer Laminated Shielding Tape (LST)
A LST shall be applied over the braid wires specified in section 8.1.2.
The LST shall be constructed of two aluminum foils laminated to a central strength member.
The outer LST shall be applied longitudinally over the second outer conductor with an overlap of’ 18% minimum to 35% maximum and shall be free of creases, twists and discontinuities over the entire length.ANSI SCTE 177 pdf download.
