MBTA Communications Fiber Spec C-76 - Updated 2019.pdf

March 1, 2019

SPECIFICATION C-76

LOOSE TUBE OPTICAL FIBER CABLE SPECIFICATION

FOR LOW-SMOKE, ZERO HALOGEN APPLICATIONS AND

ANCILLARY EQUIPMENT

Part I - General

1.01 DESCRIPTION

A. This specification specifies the requirements for all strand single mode low-smoke zero halogen fiber optic cable and associated equipment (i.e. connectors and patch panels) to be deployed in a SONET based network that shall be capable of supporting OC-192 (10 Gbps).

B. The cable shall have a dielectric rodent-resistant fiberglass armor, rodent-resistant outer jacket, an interlocking aluminum armor, or a corrugated steel armor. The type of cable used on MBTA property will require approval from the MBTA Communications Department before any installation can take place.

C. The cable must meet the requirements of the National Electrical Code (NEC)

Section 770.

D. Industrial Ruggedness tested - Applicable Tests: UL 13; UL 444; UL 1277; CSA

C22.2 No. 230 and No. 232. The cables shall be Tray Rated.

E. Low-Smoke Zero-Halogen – Applicable Flame-Smoke Test: UL 1685, Vertical

Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical Fiber Cable. Cable shall be listed OFN-LS. Interlocking armored cables shall be listed OFC-LS. Corrugated armored cables shall be listed OFCR-LS and shall meet ANSI/UL 1666, Test for Flame Propagation Height of Electrical and Optical Fiber Cables Installed Vertically in Shafts

F. Finished cables shall conform to the applicable performance requirements of the Insulated Cable Engineers Association, Inc. (ICEA) Standard for Indoor Outdoor Optical Fiber Cable (ICEA S-104-696).

G. Finished cables shall conform to the applicable performance requirements of the

Institute of Electrical and Electronic Engineers (IEEE) Vertical Wire Flame Test

(IEEE-383).

H. At the M.B.T.A.’s request, the manufacturer(s) shall provide engineering services, installation procedures, and technical support concerning the items contained in this specification.

1.02 RELATED SECTIONS

Reserved

1.03 REFERENCES

Insulated Cable Engineers Association (ICEA) Rural Utility Service (RUS) National Electric Code (NEC) Electronic Industries Association (EIA) Telephone Industries Association (TIA) Institute of Electrical and Electronics Engineers (IEEE) Telcordia (formally BellCORE) International Telecommunications Union (ITU) Underwriters Laboratory (UL)

1.04 SUBMITTALS

A. Submit descriptive literature and manufacturer specification sheets for all fiber optic cables and equipment proposed for use in accordance with the requirements of specification for approval prior to procurement, fabrication, assembly, installation, and testing.

B. Hold Point: Prior to delivering any equipment, submit to the M.B.T.A.

Communications Department for approval six (6) copies of a detailed test procedure intended to ensure all components of the system are compatible and functioning properly, in accordance with these Specifications. The tests performed shall include, but not be limited to, the tests outlined in Paragraph 3.02 of this Section. The detailed test procedure shall include a description of all test equipment to be used, and specific pass/fail criteria for each test.

1.05 DELIVERY, STORAGE, AND HANDLING

A. The vendor is responsible for the storage, delivery, and handling of all materials provided under this specification. The vendor shall warehouse all items for the M.B.T.A. Items shall be stored in a safe and secure location. All equipment shall be protected from water, dust, etc.

B. Materials shall be shipped from the vendor’s warehouse, in the quantities requested by the M.B.T.A., to the M.B.T.A. locations as required by the M.B.T.A. within two days of notification.

C. The required length of cable shall be wound on reels. Each reel shall contain only one continuous length of cable. The packaging shall be constructed so as to prevent damage to the cable during shipping and handling.

D. When the length of an order requires a large (4 feet or greater) reel the cable shall be covered with a three layer laminated protective material. The outer end of the cable shall be securely fastened to the reel head so as to prevent the cable from becoming loose in transit. The inner end of the cable shall project into a slot in the side of the reel or into a housing on the inner slot of the drum, in such a manner and with sufficient length to make it available for testing.

E. Test tails shall be at least 2 meters long. The inner end shall be fastened so as to prevent the cable from becoming loose during shipping and installation.

F. Reel Marking and Labeling: Every cable shall be delivered with the following information:

1. Reel Label:

Part number Reel number Length (ft/m) Marking (ft/m) top and bottom Date of Manufacture UL/ETL/CSA listing information

2. Bar Code Label:

Package ID Reel number Quantity Customer ID Package count Factory order number Release part number Length (ft) “Ship to:” Address “Attention to:”

3. Stenciling:

Manufacturer’s name and address Direction of rotation Reel Size

“DO NOT LAY REEL ON SIDE”

1.06 QUALITY ASSURANCE

A. The cable manufacturer shall be ISO 9001 registered. Fiber optic cables shall be manufactured in accordance with TL 9000 R3.0.

B. All optical fibers in cables lengths of 300 m or greater shall be 100 % attenuation tested. The attenuation shall be measured at 850 nm and 1300 nm for multimode fibers. The attenuation shall be measured at 1310 nm and 1550 nm for single-mode fibers. The manufacturer shall store these values for a minimum of 5 years. These values shall be available upon request.

C. Submit under provisions of Section 01300

1.07 WARRANTY

The vendor/manufacturer(s) shall provide a one year warranty on parts commencing on the day that the items are received by the M.B.T.A.

PART 2 - PRODUCTS

2.01 MATERIAL

A. All material shall be new and unused and the workmanship shall be in accordance with the highest standards of the electronic equipment industry. Bids will be accepted only for new and current material. Material discontinued by the manufacturer will not be accepted. All components shall be UL listed.

B. Material purchased under this Section shall be covered by standards illustrated in paragraph 1.03 and the manufacturer's warranties against material and workmanship.

C. Provide all material capable of operating within a transit system environment, subject to temperature, humidity, vibration, and light conditions typically encountered.

2.02 FIBER OPTIC STRANDS (SINGLE MODE DISPERSION UN-SHIFTED)

A. All fibers in the cable must be usable and meet required specifications.

B. Each optical fiber shall be sufficiently free of surface imperfections and inclusions to meet the optical, mechanical, and environmental requirements of this specification.

C. Each optical fiber shall consist of a doped silica core surrounded by a concentric glass cladding. The fiber shall be a matched clad design, manufactured utilizing Outside Vapor Deposition.

D. Each optical fiber shall be proof tested by the fiber manufacturer at a minimum of

100 kpsi (0.7 GN/m2).

E. The fiber shall be coated with a dual layer acrylate protective coating. The coating shall be in physical contact with the cladding surface.

F. The attenuation specification shall be a maximum value for each cabled fiber at

23 5 C on the original shipping reel.

G. The single-mode fiber utilized in the optical fiber cable shall meet EIA/TIA- 492CAAA, "Detail Specification for Class IVa Dispersion-Unshifted Single-Mode Optical Fibers", ITU recommendation G.652, “Characteristics of Single-Mode Optical Fibre Cable” , ITU recommendation G.957 “Optical Interfaces for Equipment’s and Systems Relating to Synchronous Digital Hierarchy” and Telcordia

“GR-20-CORE”.

1. Cladding Diameter: 125.0 ± 0.7 m

2. Core-to-Cladding Concentricity: 0.5 m

3. Cladding Non-Circularity: 0.7 %

Defined as: 100 Diameter Cladding Maximum

Diameter Cladding Minimum

4. Mode Field Diameter: 9.2 ± 0.4 m at 1310 nm

10.4 ± 0.5 m at 1550 nm

5. Coating Diameter: 242 ± 5 m

6. Attenuation: 0.4 dB/km at 1310 nm and 0.3 dB/km at 1550 nm.

7. Attenuation Uniformity: No point discontinuity greater than 0.05 dB at either

1310 nm or 1550 nm.

8. Attenuation at the Water Peak: 0.4 dB/km at 1383 ± 3 nm.

9. Cutoff Wavelength ( ccf ): < 1260 nm.

10. IEEE 802.3z Performance: The fiber shall support laser-based Gigabit Ethernet

(GbE) operation in the 1000BASE-LX (1300 nm) up to 5000 meters.

11. Macrobend Attenuation: The attenuation due to 1 turn of fiber around a 32 mm diameter mandrel shall not exceed 0.03 dB at 1550 nm. The attenuation due to 100 turns of fiber around a 50 mm diameter mandrel shall not exceed 0.03 dB at 1310 nm 1550 nm.

12. Zero Dispersion Wavelength (o): 1304 nm o 1324 nm

13. Zero Dispersion Slope (So): 0.092 ps/(nm²km)

14. Dispersion:

18 ps/ (nmkm) at 1550 nm 22 ps/ (nmkm) at 1625 nm

15. Fiber Curl: > 4.0 m radius of curvature

16. Cabled Fiber Polarization Mode Dispersion (PMD): 0.06 ps km

2.03 CABLE CONSTRUCTION

A. Optical fibers shall be placed inside a loose buffer tube. The buffer tubes shall be made of polypropylene. The nominal outer diameter of the buffer tube shall be 2.5 mm.

B. Each buffer tube shall contain up to 12 fibers.

C. The fibers shall not adhere to the inside of the buffer tube.

D. Each fiber shall be distinguishable by means of color coding in accordance with

TIA/EIA-598-B, "Optical Fiber Cable Color Coding."

E. The fibers shall be colored with ultraviolet (UV) curable inks. The UV curable ink shall be applied to the outside of the optical fiber protective coating layer and not be an integral component of the coating layer itself in order to produce more distinguishable colored fiber.

F. Buffer tubes containing fibers shall be color coded with distinct and recognizable colors in accordance with TIA/EIA-598-C, "Optical Fiber Cable Color Coding."

Buffer tube colored stripes shall be inlaid in the tube by means of co-extrusion when required. The nominal stripe width shall be 1 mm.

G. For dual layer buffer tube construction cables, standard colors are used for tubes 1 through 12 and stripes are used to denote tubes 13 through 24. The color sequence applies to tubes containing fibers only, and shall begin with the first tube. If fillers are required, they shall be placed in the inner layer of the cable. The tube color sequence shall start from the inside layer and progress outward.

H. In buffer tubes containing multiple fibers, the colors shall be stable across the specified storage and operating temperature range and not subject to fading or smearing onto each other or into the gel filling material. Colors shall not cause fibers to stick together.

I. The buffer tubes shall be resistant to kinking.

J. Fillers may be included in the cable core to lend symmetry to the cable cross-section where needed. Fillers shall be placed so that they do not interrupt the consecutive positioning of the buffer tubes. In dual layer cables, any filler shall be placed in the inner layer. Fillers shall be nominally 2.5 mm in outer diameter.

K. The central member shall consist of a dielectric, glass reinforced plastic (GRP) rod.

The purpose of the central member is to prevent buckling of the cable. The GRP rod shall be overcoated with a thermoplastic, when required, to achieve dimensional sizing to accommodate buffer tubes/fillers.

M. Each buffer tube shall contain a water blocking element for water blocking protection. The water swellable element shall be non-nutritive to fungus, electrically non-conductive, and homogenous. They shall be free from dirt and foreign matter.

The element will preclude the need for other water blocking material; the buffer tubes shall be gel-free.

N. Buffer tubes shall be stranded around the dielectric central member using the reverse oscillation stranding process. Water blocking yarn(s) shall be applied longitudinally along the central member during stranding.

O. Two polyester yarn binders shall be applied contra-helically and with sufficient tension to secure each buffer tube layer to the dielectric central member without crushing the buffer tubes. The binders shall be non-hygroscopic, non-wicking and dielectric with low shrinkage.

L. For single layer cables, a water blocking tape shall be applied longitudinally around the outside of the stranded tubes/fillers. The tape shall be held in place by a single polyester binder yarn. The water blocking tape shall be non-nutritive to fungus and electrically non-conductive. It shall also be free from dirt and foreign matter.

M. For dual layer cables, a second (outer) layer of buffer tubes shall be stranded over the original core to form a two-layer core. A water blocking tape shall be applied longitudinally over both the inner and outer layer with each being held in place with a single polyester binder yarn. The water blocking tape shall be non-nutritive to fungus and electrically non-conductive. It shall also be free from dirt and foreign matter.

N. Non-armored cables shall contain at least one ripcord under the sheath for easy sheath removal. Armored cables shall contain at least one ripcord under the steel armor for easy sheath removal.

O. Flame-retardant tape may be applied to provide resistance to flame propagation.

P. A water blocking tape shall be applied longitudinally around the outside of the flame retardant tape.

Q. The tensile strength shall be provided by the central member, and additional dielectric yarns as required. The dielectric yarns shall be helically stranded evenly around the cable core.

R. Cables shall be sheathed with a flame retardant low-smoke zero halogen jacket.

Jacketing material shall be applied directly over the tensile strength members and water blocking tape. The flame retardant low-smoke zero halogen outer jacket shall contain carbon black or a UV stabilized colored compound to provide ultraviolet light protection and shall not promote the growth of fungus.

S. The jacket shall be continuous, free from pinholes, splits, blisters, or other imperfections. The jacket shall have a consistent, uniform thickness; jackets extruded under high pressure are not acceptable. The jacket shall be smooth, as is consistent with the best commercial practice. The jacket shall provide the cable with a tough, flexible, protective coating, able to withstand the stresses expected in normal installation and service.

T. Cable jackets shall be marked with the manufacturer's name or file number, month and year of manufacture, sequential meter or foot markings, a telecommunication handset symbol as required by Section 350G of the National Electrical Safety Code (NESC), fiber count, and fiber type, flame rating and listing marking. The actual length of the cable shall be within -0/+1% of the length markings. The print color shall be white, with the exception that cable jackets containing one or more coextruded white stripes, which shall be printed in light blue. The height of the marking shall be approximately 2.5 mm.

U. The maximum pulling tension shall be 2700 N (600 lbf) during installation (short term) and 810 N (180 lbf) long term installed.

V. The non-armored cable shall be all-dielectric.

W. Un-armored, double-dielectric cables shall be listed OFN-LS and shall be as described previously through paragraph 2.03-R. The maximum pulling tension shall be 4500 N (1000 lbf) during installation (short term) and 1500 N (333 lbf) long term installed.

X. Interlocking armored cables shall be as described previously in this section but shall also include an interlocking aluminum armor applied helically around the outside of the fiber optic cable. The interlocking armor may be left un-jacketed or may have a flame retardant low-smoke zero halogen outer jacket. The armor for these cables shall be comparable to liquid tight flexible metal conduit if jacketed, or flexible metal conduit if not jacketed. Because of the interlocking metallic armor, this cable shall be listed OFC-LS. The interlocking armor and outer jacket options will be specified on the purchase order. Cables with interlocking armor shall be available in fiber counts up to 288 fibers.

Y. Corrugated armored cables shall have an armor layer applied directly over at least one ripcord and a water blocking tape that shall be applied longitudinally around the cable. The tape shall be held in place by a single polyester binder yarn. The armor shall be a corrugated steel tape, plastic-coated on both sides for corrosion resistance, with an overlapping seam with the corrugations in register. A water swellable Mylar tape shall then be placed around the corrugated steel tape. The outer flame retardant low-smoke zero halogen jacket shall be applied over the water swellable Mylar tape. Because of the corrugated metallic armor, this cable shall be listed OFCR-LS.

Any outer jacket options shall be specified on the purchase order. Cables with corrugated armor shall be available in fiber counts up to 288 fibers.

2.04 CABLE SPECIFICATION

A. Temperature Range: The storage temperature range for the cable on the original shipping reel shall be -50 C to +75 C. The installation temperature range for the cable shall be -30 C to + 60 C. The operating temperature range for the cable shall be -50 C to + 75 C. Testing shall be in accordance with FOTP-3.

B. Tensile Loading and Fiber Strain: When tested in accordance with FOTP-33, "Fiber Optic Cable Tensile Loading and Bending Test," and FOTP-38, “Measurement of Fiber Strain in Cables Under Tensile Load,” a length of cable shall be tested to the rated tensile load. The rated tensile load shall be 2670 N (600 lbf). While under the rated tensile load, the fiber shall not experience a measured fiber strain greater than 60% of the fiber proof test level. After being held at the residual load (30% of the rated tensile load) the fiber shall not experience a measured fiber strain greater than 20% of the fiber proof test level nor an attenuation change greater than 0.40 dB at 1550 nm (single-mode) or greater than 0.60 dB at 1300 nm (multimode). After the tensile load is removed, the fibers shall not experience an attenuation change greater than 0.40 dB at 1550 nm (singlemode) or greater than 0.60 dB at 1300 nm (multimode).

C. Compressive Loading Test: When tested in accordance with FOTP-41, "Compressive Loading Resistance of Fiber Optic Cables," the cable shall withstand a minimum compressive load of 220 N/cm (125 lbf/in) applied uniformly over the length of the sample. The 220 N/cm (125 lbf/in) load shall be applied at a rate of 2.5 mm (0.1 in) per minute. The load shall be maintained for a period of 1 minute. The load shall then be decreased to 110 N/cm (63 lbf/in). Alternatively, it is acceptable to remove the 220 N/cm (125 lbf/in) load entirely and apply the 110 N/cm (63 lbf/in) load within five minutes at a rate of 2.5 mm (0.1 in) per minute. The 110 N/cm (63 lbf/in) load shall be maintained for a period of 10 minutes. Attenuation measurements shall be performed before release of the 110 N/cm (63 lbf/in) load.

The change in attenuation shall not exceed 0.40 dB at 1550 nm for single-mode fibers and 0.60 dB at 1300 nm for multimode fiber.

D. Cyclic Flexing: When tested in accordance with FOTP-104, "Fiber Optic Cable Cyclic Flexing Test," the cable shall withstand 25 mechanical flexing cycles at a rate of 30 ± 1 cycles per minute. The flexing arc shall be + 90 degrees from the reference position. The fiber shall not experience an attenuation change greater than

0.40 dB at 1550 nm (single-mode) or greater than 0.60 dB at 1300 nm (multimode).

No cracks, splits, tears or other opening shall be present on the inner or outer surface of the jacket. No visible cracks greater than 5 mm in the armor, if present, shall be present.

E. Twist Test: When tested in accordance with FOTP-85, "Fiber Optic Cable Twist

Test," a length of cable no greater than 2 meters will withstand 10 cycles of mechanical twisting. The fiber shall not experience an attenuation change greater than 0.40 dB at 1550 nm (single-mode) or greater than 0.60 dB at 1300 nm (multimode).

F. High and Low Temperature Bend: When tested in accordance with FOTP-37, "Fiber

Optic Cable Bend Test, Low and High Temperature," the cable shall withstand four full turns around a mandrel at test temperatures of -10 °C and +60 °C. The mandrel diameter shall be the larger of 20X cable diameter or 150 mm for general purpose and riser cables. The presence of visible cracks, splits, tears, or other openings on either the inner or outer surface of the jacket constitutes failure. None of the sheath components shall show visible cracking when removed successively and examined.

For single-mode fibers, the increase in attenuation shall be < 0.40 dB at 1550 nm.

For multimode fibers, the increase in attenuation shall be < 0.60 dB at 1300 nm.

G. Impact Resistance: When tested in accordance with FOTP-25, "Repeated Impact

Testing of Fiber Optic Cables and Cable Assemblies," the cable shall withstand a minimum of 2 impact cycles at 3 locations spaced 150 mm. The impact energy shall be at least 4.4 N•m. The fibers shall not experience an attenuation change greater than 0.40 dB at 1550 nm (single-mode) or greater than 0.60 dB at 1300 nm (multimode). The presence of visible cracks, splits, tears, or other openings on the outer surface of the jacket constitute a failure. The presence of broken fibers within the specimen constitutes a failure.

H. Temperature Cycling: When tested in accordance with FOTP-3, "Procedure to

Measure Temperature Cycling Effects on Optical Fiber, Optical Cable, and Other Passive Fiber Optic Components," the change in attenuation after 2 cycles at extreme operational temperatures (-40 °C to +70 °C) shall not exceed 0.40 dB/km at 1550 nm (single-mode) or 0.60 dB/km at 1300 nm (multimode). The change in attenuation is measured with respect to the baseline values measured at room temperature before temperature cycling and after the last low and last high temperature.

I. Water Penetration: When tested in accordance with FOTP-82, “Fluid Penetration Test for Fluid-Blocked Fiber Optic Cable”, a one meter length of unaged cable shall withstand a one meter static head or equivalent continuous pressure of water for one hour without leakage through the open cable end.

J. Cold Impact Test: When tested in accordance with FOTP-25, "Repeated Impact

Testing of Fiber Optic Cables and Cable Assemblies," the cable shall withstand a minimum of 2 impact cycles at 3 locations separated by 150 mm. The impact energy shall be at least 2.94 N•m. The cable shall be conditioned for at least 4 hours at the minimum installation temperature (-10 °C). The presence of visible cracks on either the inner or outer surface of the jacket constitutes a failure. No optical measurements are required.

2.04 EQUIPMENT RACK

A. The equipment rack shall conform to Electronics Industry Association (EIA) EIA- 310 standards. The rack shall be 213 cm (7 feet) tall with a 48.3 cm (19 inch) standard panel mounting flange width and shall contain forty-four usable rack spaces. One EIA rack space or panel height (denoted as 1U) is defined as being

44.45 mm (1.75 in.) in height with mounting holes on each upright of the rack.

Equipment mounting holes shall be tapped with 10-32 UNF-2B threads. Installation fasteners shall be included.

B. The rack shall come equipped with a top jumper trough with radius guides for distributing jumpers between equipment bays.

2.05 PATCH PANEL

A. The Patch Panel shall be a rack mountable combination connector and splice housing.

The housing shall accommodate pigtail splicing via interchangeable splice cassettes with pigtailed connector panels. The unit shall be sized to accommodate a 48 strand fiber optic cable (48 ST bulkhead ports).

B. Housings shall be mountable in an EIA-310 compatible 19 or 23 inch rack.

Housings shall be in a 2 rack unit size. .

C. The unit shall be mounted with a 13 cm frontal projection, with the option to flush mount with separately purchased brackets.

D. The unit shall not exceed a depth requirement of 42 cm.

E. The unit shall meet the design requirements of ANSI/TIA/EIA-568 and the plastics flammability requirements of UL 94 V-0.

F. Housings shall be manufactured using 16 gauge aluminum or equivalent for structural integrity and shall be finished with a wrinkled powder coat for durability.

Assembly hardware and equipment attaching machine screws shall be included and shall be similar in color.

G. The front of the housing shall contain jumper egress openings on both sides that are aligned with the jumper routing guides, and will provide access for optical fiber jumpers and patch-cords as they enter or exit the front sides of the housing..

H. The housing shall accommodate pigtail splicing via interchangeable splice

Cassettes with pigtailed connector panels, while maintaining the capability to accommodate pigtailed connector modules and/or pigtailed connector panels outside of the splice cassettes.

I. The housing shall provide means for strain-relieving fiber optic cables both interior toand exterior to the rear of the housing. External strain-relief shall be achieved through attachment of an external strain-relief bracket that attaches onto either side of the housing via two fasteners. The external strain-relief bracket shall provide slots or holes for securing cables with cable ties ("ty-wraps") and/or hook-and-loop type straps. The external strain-relief bracket shall provide threaded holes for attaching up to two cable clamps, sold separately. The cable clamp shall accept one cable from

9.5 to 28.6 mm in diameter. The cable clamp mechanism shall also handle multiple smaller fiber count cables when used with a multiple cable insert. The total cable capacity per clamp shall be five cables ( 10.2 mm OD) when used with a multiple cable insert. Housing cable clamp capacity shall be four clamps. Internal strain-relief shall be achieved through one of three means: 1) attachment of a removable and interchangeable internal strain-relief bracket that mounts on the floor of the rear assembly housing via retention studs and a springloaded plunger, 2) strain-relieving directly to the inside surface of the door, or 3) strain-relieving slots on both sides of the rear corners of the tray for securing cables via cable-ties or hook-and-loop type straps for when cable(s) enter directly through and perpendicular to the rear door.

The internal strain-relief bracket shall strain-relieve a single cable up to 34.0 mm or multiple cables of a comparable bundle diameter. The internal strain-relief bracket shall incorporate pairs of lances for cableties,straps or hook-and-loop type tape.

J. Front and rear doors of the housings shall be hinged and removable for ease of cable installation. The front door shall contain two slam latches (located on the left and right side of thedoor) that can individually be de-latched with single-hand operation and the rear door shall contain a turn-latch in the center of the door for opening and closing the door . The front and rear doors shall be lockable when used with an optional key lock kit. Jumpers shall route out the sides of the patch field.

K. The housings shall have a labeling scheme that complies with ANSI/TIA/EIA-606.

L. The housing shall contain a transitional strain-relief clip which shall be capable of holding six (6) buffer tube transition kits that can each manage a single twelve-fiber buffer tube. Fiber fan-out devices are used to build 250 m fiber in buffer tubes out to 900 m for fiber protection and to allow connectorization.

2.06 FIBER OPTIC PIGTAILED PANELS/PIGTAILED CASSETTES

A. Fiber optic pigtailed panels shall be comprised of six or twelve single-mode fiber strands compliant with TIA/EIA-568-C-3. The pigtails shall have factory installed ST®-Compatible connectors. These ST-Compatible connectors shall be connected to an adapter panel with six or 12 ST-Compatible adapters. The pigtails shall be 3 meters in length.

B. Fiber optic pigtailed cassettes shall be removable modules that hold one adapter panel, one pivoting splice tray, twelve heat shrinks and up to twelve individual pigtails. The pigtails shall be as described in section 2.06A above.

C. The pigtails shall have an insertion loss of 0.5 dB maximum and a minimum reflectance of -55 dB.

2.07 SLACK ENCLOSURE

A. The slack enclosure shall be 3 foot x 3 foot x 1 foot formed 304 stainless steel

NEMA 4X. Enclosures to include document pocket, removable stainless steel hinge pins, 12 gauge steel back panel, and pad lock lockable “L” handle (or hasp and staple with lever type, quick release fasteners around door perimeter).

B. Weld seams shall be smooth, continuously welded and ground smooth.

C. Door stiffeners shall be provided as required.

PART 3 - EXECUTION

3.01 Each equipment manufacturer shall supply recommended installation procedures for all products supplied. Recommended procedures must also be supplied for fiber optic cable installation to include duct, direct buried and aerial installations.

3.02 Each product shall be tested to ensure compliance with this specification.

3.03 Fiber optic cable tests shall include, but not be limited to, optical time domain reflectometer, and power loss.

3.04 The fiber optic cable shall meet or exceed performance characteristics when tested in accordance with the EIA/TIA-455A and EIA/TIA-526-7 standards.