ANSI SCTE 171 pdf free download
ANSI SCTE 171 pdf free download.Passive Network Device (NID) Enclosure Specification.
5. Purpose The purpose of this specification is to recommend a standard set of design requirements for Network Interface Device enclosures which are used to mount and enclose drop components for outdoor broadband applications. The specification in no way should limit or restrict any manufacturer’ s innovation and improvement. Innovations and improvements are encouraged and this specification may be adjusted when beneficial. 6. General Characteristics All NIDs that meet the standards proposed by this document shall have the following characteristics and pass the tests and their requirements list herein. See Figures 1-5 for sample drawings of such NIDs. 1. Provide a secure demarcation connection point between the network provider wiring and the subscriber wiring. 2. May provide isolated access between the subscriber and provider within the NID itself. 3. The NID shall have an attached lid or cover. 4. Serve as a convenient test point for verification of coaxial cable, twisted pair or optical cable integrity. 5. Provide a weatherproof housing to increase the long term performance of broadband passive drop related components. 6. House and install coaxial, twisted pair or optical broadband related devices. 7. Provide weatherproof ports for coaxial cable, twisted pair and optical cable. 8. A 3/8”(9.5 mm) long, #6 self-tapping screw inserted into any mounting hole and tightened with a torque of 20 lb-in (2.26 N-m) shall not cause cracking of the mounting hole or mounting surface nor shall the threads strip. 9. The NID enclosure shall be able to contain an electrical bonding point or block.10. The input cable port shall be sufficient in size to allow for cable with an outside diameter of /2- inches (12.7 mm). All other ports shall accept cable diameters up to 0.405”(10.29 mm). 11. The NID enclosure shall allow for the minimum bending radius of the type of cable used as specified by the manufacturer. 12. Mounting holes or slots shall be of such size and location as to allow orthogonal mounting of the device on a hole centerline pattern/grid of 0.500″ by 0.500″ +/-0.010”(12.7mmx 12.7mm +/- 0.25mm). No through holes are permitted so as to prevent water entry. Mounting holes must accommodate a #6 self-tapping screw, extended a maximum of /2-inches (12.7 mm) into the mounting surface. 13. The NID enclosure shall meet any applicable requirements of ANSINFPA 70 National Electrical Code (NEC). In addition, when the NID contains telephony demarcation, it shall meet, as a minimum, the generic requirements for Outdoor Telephone Network Interface Devices listed in this document where applicable. 14. All passive drop components used inside the NID enclosure must meet their applicable SCTE specification.7.1.1. Requirement 1 The dielectric withstand of the NID to its mounting surface shall be no less than 2500 volts root mean square (V rms) between the connections inside the NID enclosure and the metallic mounting surface to which the NID enclosure is mounted. 7.1.2. Requirement 2 The NID enclosure shall not degrade the performance of any installed components, and said components when installed inside the NID enclosure must still meet all of their appropriate SCTE specifications after electrical testing is complete. 7.1.3. Test Apparatus The Outdoor NID is to be installed on a metallic plate with the appropriate metallic screws. The plate itself is to be electrically isolated from any metallic component on the NID, specifically the terminals. All terminals are bonded together.ANSI SCTE 171 pdf download.
