ANSI SCTE 15:2016 pdf free download – Specification for Trunk, Feeder and Distribution Coaxial Cable
13.4. Air Leakage Test
The foam dielectric shall prohibit the flow of 5 psi of air for a minimum of 15 seconds in a 12-inch (304.80 mm) sample. Solid PE discs shall prohibit the flow of 40 psi of air for 60 seconds in a 6-inch (152.40 mm) sample. The test shall be performed in accordance with ANSI/SCTE 13 2011.
13.5. Thermal Oxidative Stability
To ensure the desired life expectancy of the dielectric insulation, determine its Oxidative Induction Time (OIT) before and after aging by the following test method. Insulation shall be tested by measuring OIT according to SCTE IPS TP-119. The test utilizes insulation removed from the completed cable. The test utilizes insulation removed from the completed cable and tested at 180°C ± 0.3C°. 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.
13.6. Cable Static Minimum Bend
The minimum bend diameter shall be observed at all times as stated and specified by the manufacture.The test shall be performed in accordance with ANSI/SCTE 39 2013.
13.7. Cable Static Pull Force
The maximum pulling force for coaxial cable shall be determined by a calculation based on the measurement of tensile yield strength of the finished cable or outer conductor only. The maximum pull force (pounds) for a coaxial cable was determined by reducing the measured tensile strength (pounds) by a percentage as a safety factor. This safety factor (percentage reduction from yield) was determined by the manufacturer. By implementing this safety factor, the cable and/or the outer conductor yield is at a point well below permanent deformation. Reference manufacturer catalog specifications for maximum pulling tension.
14.1. Spark Test
The overall cable jacket integrity shall be subject to a spark test with a minimum 5 kV rms to ensure the absence of faults in the jacket during manufacturing.
14.2. Characteristic Impedance
The Impedance shall be 75 ± 2 ohms. The measurement method shall be performed according to ANSI/SCTE 66 2008 or equivalent.
14.3. Conductor Resistance
The DC conductor resistance of the inner and outer conductor shall be measured per ANSI/SCTE 44 2010 and the loop resistance calculated from the inner and outer conductor. The maximum resistance values shall comply with Table 7.