Source: http://homedocbox.com/Environmental_Safety/71944393-A-general-horizontal-and-backbone-cabling-shall-be-verified-in-accordance-with-ansi-tia-eia-568-c-and-the-addendum-for-fiber-optic-testing.html
Timestamp: 2019-10-21 05:32:27
Document Index: 377064257

Matched Legal Cases: ['ART 1', 'ART 1', 'ART 1', 'art 3', 'art 3', 'ART 1']

A. General: Horizontal and backbone cabling shall be verified in accordance with ANSI/TIA/EIA-568-C and the addendum for fiber optic testing. - PDF
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1 3.4 TESTING OF FIBER OPTICS CABLING A. General: Horizontal and backbone cabling shall be verified in accordance with ANSI/TIA/EIA-568-C and the addendum for fiber optic testing. B. General: In the event the Engineer elects to be present during the tests, provide notification to the engineer two (2) weeks prior to testing. C. Cleanness: All fiber optics connector shall be cleaned properly before any testing and after testing. Proof of cleanness shall be required during the acceptance test for the SCS by the A&E. SCS installer shall have available during this test a 200X microscope or a video probe to demonstrate the cleanness of the randomly selected connectors by the A&E. D. End to End Attenuation Test: The SCS installer shall perform end-to-end attenuation testing for each multimode fiber at 850 nm and 1300 nm from both directions for each terminated fiber span in accordance with EIA/TIA A (OFSTP 14) and single-mode fibers at 1310 nm and 1550 nm from both directions for each terminated fiber span in accordance with TIA/EIA (OFSTP 7). A one jumper reference shall be used for all testing. For spans greater than 90 meters, each tested span must test to a value less than or equal to the value determined by calculating a link loss budget. For horizontal spans less than or equal to 90 meters, each tested span must be < 2.0 db. When calculating the link loss budget for spans greater than 90 meters use the values listed below. End to end attenuation shall be done with a Level II meter using a meter and light source equipment (also known as main and remote unit). ATTENUATION DUE TO FIBER TYPE MAX. ATTENUATION Terminating connectors. All fiber types 0.75 db per connector Field terminated options Terminating connectors, All fiber types No more than 0.2 db pre-term fibers additional to total db loss measured at the factory in report sent by cable manufacturer. Splices All fiber types 0.3 db per splice Distance OM1 (850nm/1300) 3.4 db /1.0 db per Km. Distance OM2, OM3 and OM4 (850nm/1300) 3.0 db /1.0 db per Km. Distance OS1 and OS2 ( db /0.65 db/ 0.5 db nm/1383 nm/1550 nm) per Km. St. Charles County Emergency Structured Cabling System
2 E. OTDR Test. Additional to end to end attenuation test, all fiber optic cables shall be tested with a Level III OTDR equipment for the following conditions: 1. Each known event (connector/splice) insertion loss at both windows for each fiber type (850/1300 nm for multimode and 1310/1550 nm for single mode). All events shall pass maximum allowed insertion loss for the event type as indicated in table above. 2. Overall insertion loss of the cable at both windows. Adding all events and cable length. 3. Estimated distance. 4. Cable signature in the form of traces along the complete distance of the cable. Unexplained cable reflections shown in the OTDR shall require the installer to submit letter explaining such events and pictures of cable conditions in the locations where the unexplained events are located to demonstrate cable has not been kinked or damaged during installation. F. OTDR Test conditions. All OTDR testing shall be performed with the following conditions: 1. Use a launch cable and a tail cable in accordance with fiber type being tested and requirements indicated by OTDR equipment manufacturer. 2. Launch and tail cables shall be products sold by testing equipment manufacturer and not field made cables. 3. Launch and tail cables shall be selected according to the type of connector being tested such as APC or UPC type connectors. 4. Use launch compensation mode during the test to subtract the effects of the launch and tail cables. 5. Test from one direction only, unless the presence of gainers are spotted during the test. In such case the installer shall test in both directions and adjust the test equipment to average measurements from both directions. 6. The SCS installer shall verify the backscatter coefficient use in the test to make sure it matches the coefficient of the cable being tested. G. OTDR Testing Equipment used on this project shall have the specifications indicated in this following table: SPECIFICATION MULTIMODE SINGLE MODE Wavelengths 850 nm ±10 nm 1300 nm +35 / -15 nm nm ±25 nm nm ±30 nm. Event Dead Zone. Measured 850 nm: 0.5 [3.7] m 1310 nm: 0.6 [3.5] m at 1.5 db below nonsaturating reflection peak 1300 nm: 0.7 [3.5] m 1550 nm: 0.6 [3.5] m with the shortest pulse width. Reflection peak < -40 db for mm and < -50 db for sm. St. Charles County Emergency Structured Cabling System
3 Attenuation Dead Zone. Measured at ± 0.5 db deviation from backscatter with the shortest pulse width. Reflection peak < -40 db for mm. and < -50 db for sm. Pulse Widths (nominal) Loss Threshold Setting 850 nm: 2.2 [10] m 1300 nm: 4.5 [13] m 850 nm: 3, 5, 20, 40, 200 ns nm: 3, 5, 20, 40, 200, 1000 ns db to 1.5 db Adjustable in 0.01 db increments 1310 nm: 3.6 [10] m 1550 nm: 3.7 [12] m 3, 10, 30, 100, 300, 1000, 3000, 10000, ns 0.01 db to 1.5 db Adjustable in 0.01 db increments H. The Test Report for each fiber strand shall include the following information: 1. Calculated Loss Budget for each optical fiber link (see attenuation table above) 2. Cable/strand ID matching shop drawings labeling system. 3. Name of technicians who performed the test. 4. Date and time the test was performed. 5. Measurement direction (from/to) 6. Jumper reference set up date/time and attenuation value 7. Equipment model and serial number used and calibration date. 8. End to End Attenuation Loss Data for each optical fiber link 9. OTDR Traces, one page per strand. Expand chart to cover most of the page 10. Each event loss data and test limits used, including test limit file date used. 3.5 SYSTEMS WARRANTY AND SERVICE A. SCS Installer shall follow all warranty and service requirements indicated in specification section B. Warranty: The SCS shall be required to be under the manufacturer s warranty program for a complete channel configuration including cable, jacks, patch cords and patch panels and include cabling specifically approved for the channel configuration with the manufacturer s components. Manufactures shall provide the warranty worst-case performance data for the installed cabling system, and the performance data indicated in the warranty documents/certificate. C. A twenty five (25) year warranty available for the Structured Cabling System (Fiber optics and copper infrastructure) shall be provided for an end-to-end channel model installation which covers applications assurance, cable, St. Charles County Emergency Structured Cabling System
4 connecting hardware and the labor cost for the repair or replacement thereof. D. Additional features of the warranty shall include: 1. That the SCS installed system complies with the margin claimed by the manufacturer above the category 6A channel specifications on all transmission parameters across the entire frequency range of MHz as shown on the manufacturers catalogs and literature. 3.6 SPARE PARTS A. As part of this contract the SCS installer shall provide the following spare parts. 1. Ten (10) modular SCS jacks. 2. Five (5) faceplates 3. Two (2) faceplates with support post. 4. Ten (10) fiber optic connector of each type used in the project. 3.7 ENGINEER S FINAL ACCEPTANCE TEST A. SCS Installer shall follow all requirements for final acceptance indicated in specification section TRAINING AND INSTRUCTION A. Training shall only be done after all testing, identification process has been completed and passed as indicated in this specification. Any training done prior to final acceptance will not be accounted for the formal training requested and the SCS installer shall re-do all training after the final acceptance test is passed, at no additional cost to the Owner. B. SCS Installer shall follow all training requirements indicated in specification section C. The training for the SCS shall include the following topics: 1. Detail explanation of the identification system. 2. A walkthrough of all spaces and locations where terminations have been done in the project. 3.9 AS BUILT DOCUMENTS AND PROJECT CLOSE OUT A. The SCS shall follow all requirements for as-build and close out documents indicated in specification section B. The following are additional requirements supplementing the information provided in specification section : St. Charles County Emergency Structured Cabling System
5 1. Provide the Warranty certificate issued by the manufacturer of the SCS infrastructure. 2. The installer s RCDD shall affix his/her stamp to the as-built drawings, indicating that he/she has reviewed and approved the drawings as being complete, accurate, and representative of the system as actually installed. 3. As built drawings inside each telecom room. The SCS installer shall plot all as-built drawings and locate them inside each of the telecom rooms in the project. Each telecom room shall have the as-built drawings of the areas being served from that room. Each drawing shall be placed inside a clear vinyl document protector the size of the actual design drawing and affixed to a wall/plywood in the telecom room. The document protector shall be re-usable and shall allow the owner to replace the drawings as changes are done to the SCS infrastructure in the future. Without this information, substantial use of the system will not be provided to the installer. 4. The SCS installer shall provide Excel software spreadsheet that defines the telecommunications outlet number, location, number of voice, data and special jacks. This database shall also provide the outlet patch panel connection to the riser/inter-floor cable, equipment, and telephone company demarcation circuit pairs as part of the as-built documentation. 5. Electronic copies of all test results (copper and fiber). Electronic copies shall include raw data files and PDF files with results. PDF files shall be organized the following way: a. All copper cables for cables terminating in one telecom room in a single PDF files with the name equal to the label used in the shop drawings for the telecom room where the cables are terminated. b. All attenuation and OTDR test for all strands of a single cable shall be in one PDF file with the name corresponding to the Cable ID used in the shop drawings. END OF SECTION St. Charles County Emergency Structured Cabling System
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