ANSI SCTE-117-2006 pdf download Specification for Braided 75 ?, Mini-Series Broadband Coaxial Cable
4.0 SHIELD CONSTRUCTION
4.1 SINGLE TAPE & BRAID
4.1.1 LAMINATED SHIELDING TAPE (LST)
4.1.1.1 The first outer conductor shall be a Laminated Shielding Tape (LST) bonded to the dielectric and to itself at the tape overlap.
4.1.1.2 The LST shall overlap the dielectric circumference by 18 percent minimum on the finished product.
4.1.1.3 The LST shall be applied longitudinally to the dielectric and shall be free of creases or twists over the entire length. 4.1.1.4 The average core diameter shall be determined by measuring the diameter over the LST in the finished product as described in ANSI/SCTE 31 2001 (formerly IPS TP 018). Average Core Diameter – 0.107 inches ± 0.003 inches
4.1.1.5 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 (0.254mm)
4.1.2 BRAID WIRE
4.1.2.1 The braiding wire shall be either a round aluminum wire using an aluminum alloy of 5056, 5154, 5154A, or 5954 (ANSI/SCTE 74 2003 (formerly IPS SP 001)) or tin copper wire consisting of 34 AWG (0.0063±0.0003 inches) or 36 AWG (005±0.0003 inches).
4.1.2.2 Minimum tensile strength for individual strands of aluminum alloy braid wire shall be 43,000 psi.
4.1.2.3 Minimum elongation for individual strands of aluminum alloy braid wire shall be 3 percent.
4.1.2.4 Braid coverage over the first outer conductor shall be a minimum of 64 percent for single tape and braid products. The braid coverage shall be determined by ANSI/SCTE 51 2002 (formerly IPS TP 116).
4.2 TRISHIELD
4.2.1 LAMINATED SHIELDING TAPE (LST)
4.2.1.1 Refer to 4.1.1
4.2.2 BRAID WIRES
4.2.2.1 Refer to 4.1.2 except as indicated in 4.2.2.2 below.
4.2.2.2 Braid coverage over the first outer conductor shall be a minimum of 77 percent for trishield products. The braid coverage shall be determined by ANSI/SCTE 51 2002 (formerly IPS TP 116).
4.2.3 OUTER LAMINATED SHIELDING TAPE (LST)
4.2.3.1 An outer (LST) shall be applied over the Section 4.2.2 braid wires.
4.2.3.2 The outer LST shall be a laminated shielding tape constructed of two aluminum foils laminated to a central strength member with or without a bonding resin on one side.