HomeMy WebLinkAbout28 05 13.1-Fiber Optic Communications_TCCD Guideline Specs_2024-07-12Tarrant County College District 2024-07-12
Technical Guideline Specification
Electronic Security Systems Page 1
FIBER OPTIC COMMUNICATIONS 28 0513.1 - 1
{{Throughout the document there are references to Division 01. If these specifications are used as a
stand-alone document without Division 01 included delete all references to Division 01. There are
also references to Division 26. If a Division 26 specification section is not included in the project
delete those references}}
SECTION 28 0513.1
FIBER OPTIC COMMUNICATIONS
PART 1 - GENERAL
1.01 RELATED DOCUMENTS
A. General: Drawings and General Provisions of the Contract, including General and
Supplementary Conditions, Standard Terms and Special Provisions, apply to this section.
Also provide the work in accordance with the Division 28, Security.
1.02 DESCRIPTION
A. This specification section covers the furnishing and installation of a complete Fiber Optic
Communication Infrastructure.
B. Contractor shall furnish and install all fiber optic hardware interface devices, cabling,
distribution and connection panels, mounting brackets, power supplies, controls, and other
components of the system as shown and specified.
C. In addition, furnish and install all outlets, junction boxes, conduit, connectors, fiber cabling,
and other accessories necessary to complete the system installation. Requirements shall be
in accordance with Section 28 0000, Security General Requirements.
1.03 RELATED WORK
A. Provide the work in accordance with Section 28 0000, Security General Requirements.
B. Provide work in accordance with related sections including, but not limited to, Electrical
and Civil Sections.
1.04 SHOP DRAWINGS & EQUIPMENT SUBMITTAL
A. Provide the work in accordance with Section 28 0000, Security General Requirements.
1.05 WARRANTY
A. Provide the work in accordance with Section 28 0000, Security General Requirements.
1.06 QUALITY ASSURANCE
A. Provide the work in accordance with Section 28 0000, Security General Requirements.
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FIBER OPTIC COMMUNICATIONS 28 0513.1 - 2
B. All cabled optical fibers >500 meters in length shall be 100% attenuation tested. The
attenuation of each fiber shall be provided with each cable reel.
C. The cable manufacturer shall be ISO 9001 registered.
1.07 EQUIPMENT TECHNICAL REQUIREMENTS
A. Purpose: The Fiber Optic Communications Infrastructure System shall provide connectivity
between communications system components utilized within each site and between sites.
Fiber optic cable shall also provide point-to-point communications for security devices
where required.
B. Environment:
1. The system shall be wholly contained within each site. Refer to the drawings and Bid
Instructions to determine the scope limitations for this phase of work.
2. The system components shall be located in interior and exterior electrical cabinets
distributed throughout the site.
C. Attributes: The fiber optic infrastructure shall comprise multimode fiber strands,
connectors, patch panels, patch cords and accessories as required to provide a complete
end-to-end communications path.
1. Provide fiber optic cable as shown on plans, and as specified herein.
2. Multi-mode fiber connectivity for field devices and short network interconnection.
Network interconnections shall support a minimum of 1Gbps communications
capability.
3. Single Mode fiber connectivity for network connectivity where distances are too long
to be supported by multimode fiber connectivity. Network interconnections shall
support a minimum of 1Gbps communications capability.
1.08 FIBER CHARACTERISTICS
A. All fibers in the cable must be usable fibers and meet required specifications.
1. Each optical fiber shall consist of a doped silica core surrounded by a concentric silica
cladding. The fiber shall be matched clad design.
B. MULTIMODE
1. The Multimode fiber utilized in the cable specified herein shall meet EIA/TIA-
492AAAA-1989, “Detail Specification for 62.5 mm Core Diameter/125 mm Cladding
Diameter Class 1a Multimode, Graded Index Optical Waveguide Fibers.”
a. Core diameter: 50.0 + 3.0 mm.
b. Cladding diameter: 125.0 + 2.0 mm
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c. Core-to-Cladding Offset: < 3.0 mm.
d. Cladding non-circularity: < 2.0 %
e. Core non-circularity: < 5 %.
f. Coating Diameter: 245 + 10 mm
g. Colored Fiber Diameter: Nominal 250 mm
h. Graded Index
i. Numerical Aperture: 0.275 + 0.015.
C. FIBER SPECIFICATION PARAMETERS
1. Required Fiber Grade - Maximum Individual Fiber Attenuation
2. Multimode: The minimum normalized bandwidth of multimode optical fibers shall be
≥ 160 MHz·km at 850 nm and ≥ 500 MHz·km at 1300 nm.
3. The fiber manufacturer shall proof-test 100% of the optical fiber to a minimum load
of 100 kpsi.
D. SPECIFICATION FOR OUTDOOR CABLES
1. Outdoor fiber cable between buildings shall be provided under separate contract.
PART 2 - PRODUCTS
2.01 GENERAL
A. Product Acceptability: The Products section contains lists of acceptable products. If product
substitutions are proposed, they must be made based upon a comparison of equivalence to
the product specified. Considerations may include but shall not be limited to functional,
physical, aesthetic and/or interface aspects. The Owner shall be the sole judge of whether
or not a submitted substitution is deemed to be "equivalent" to that specified.
2.02 FIBER OPTIC LINK EQUIPMENT
2.03 FIBER OPTIC CABLE
A. Fiber Optic Cable
1. Fiber Optic Cable, Tight Buffered, Indoor Rated: In interior areas between data
rooms.
a. Multi-mode (OM3): Berk-Tek Model ODP006-CB3510/25 for 6-strand
locations and ODP012-CB3510/25 for 12-strand locations, or equal by Corning
or AT&T. Refer to plan drawings for requirements.
b. All fibers in the cable must be usable fibers and meet required specifications.
c. Fibers shall be surrounded by dielectric strength members and protected by a
flame retardant outer jacket.
d. Each optical fiber shall consist of a doped silica core surrounded by a concentric
silica cladding. The fiber shall be matched clad design.
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B. Ensure compatibility with fiber optic transceivers and data network equipment.
C. Pull fiber optic cable in a continuous run, from point-to-point with no splices.
D. If splices are necessary due to installation conditions, Contractor shall submit splice
locations to the Engineer for approval. Where approved, splices shall be made in protected
splice enclosures.
E. Provide protected splice enclosures in terminal boxes for cable tap-offs.
F. Provide jumper and panel interconnection cables of the same type and quality as above or
as recommended by equipment manufacturers.
G. Calculate expected optical losses including fiber loss, splices, and connectors for existing
and future equipment shown on drawings, and include a minimum of 3dB margin to allow
for system aging. Verify expected losses will not exceed optical budgets for all fiber optic
equipment. Provide line amplifier, if necessary to achieve required system performance.
2.04 TERMINATION HARDWARE
A. Patch Panel – Wall Mount Multimode: Panduit Opticom Model FWME2 or equal with:
1. LC Adapter Panel: Opticom Model FAP6WAQDLCZ
2. Blank Panel: Opticom Model FAPB
3. Slice Tray: Opticom Model FSTK
4. Holder: Opticom Model FSTHS
B. Patch Panel – Rack Mount Multimode: Panduit Opticom Model FRME1U or equal with:
1. LC Adapter Panel: Opticom Model FAP6WAQDLCZ
2. Blank Panel: Opticom Model FAPB
3. Splice Module: Fusion Model FOSMF or Mechanical Model FOSMM
C. Connectors:
1. Multi-Mode LC: Panduit Opticom Model FLCDMCXAQY or equal.
D. Patch Cables Assemblies: Patch cable assemblies provided are for dual LC connectors.
Where connection of a device to the fiber infrastructure requires a single LC connector the
contractor shall select the proper version from the same vendor as other patch cable. Some
equipment may require a LC connector on one end but a different type connector for the
equipment being use. The contract shall provide the proper patch cable for each device
connected to the fiber infrastructure.
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FIBER OPTIC COMMUNICATIONS 28 0513.1 - 5
1. Multimode 2 meter: Panduit Opticom Model FX2ERLNLNSNM002 or equal.
2. Multimode 3 meter: Panduit Opticom Model FX2ERLNLNSNM003 or equal.
3. Multimode 5 meter: Panduit Opticom Model FX2ERLNLNSNM005 or equal.
E. Miscellaneous: Connectors, jumpers, couplers, and hardware as required to provide a
complete and operable system.
PART 3 - EXECUTION
3.01 GENERAL
A. Provide the work in accordance with Section 28 0000, Security General Requirements.
3.02 EQUIPMENT, RACK AND CONSOLE INSTALLATION
A. Provide the work in accordance with Section 28 0000, Security General Requirements.
3.03 GROUNDING PROCEDURES
A. Provide grounding of all systems and equipment, in accordance with The General
Requirements, and in accordance with Section 28 0000, Security General Requirements.
3.04 WIRE AND CABLE INSTALLATION PRACTICES
A. Provide wire and cable installation in accordance with Section 28 0000, Security General
Requirements and EIA 568 standards.
B. The maximum pulling tension shall be 2700 N (608 lbf) during installation (short term) and
890 N (200 lbf) long term installed.
C. The shipping, storage and operating temperature range of the cable shall be -40°C to +70°C.
The installation temperature range of the cable shall be -30°C to +70°C.
D. Provide innerduct for fiber optic cable runs in duct banks 3” or larger in diameter. Provide
number of innerducts required to accommodate fiber cable and one spare innerduct.
E. Ensure the provision of fiber optic cable routing and termination slack at each pull-box,
equipment location, transition, and termination points. Refer to Service Loop requirements
below.
F. Provide continuous optical cables with a minimum of splices. At no time shall fiber optic
cable be spliced within conduit or underground duct. Where splices are required for
connection to existing backbone provide fusion splices.
G. Conform to cable manufacturer ratings for minimum bend radius of all cables. Do not
exceed bend radius in any case.
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FIBER OPTIC COMMUNICATIONS 28 0513.1 - 6
H. Terminate all fiber optic cable strands from field cable and fiber optic link equipment, at
patch panels, using recommended connectors. Provide jumper cables between patch panel
connectors to interconnect field cables and link devices. Provide through patches for fiber
strands that have no devices connected at a specific patch panel. Do not use patch panels
as bulkhead connector points.
I. Use Loose Tube Cable Furcation hardware to dress and protect fiber optic cables at
termination points.
J. Unused cable strands shall remain connected to patch panels for future use.
K. Service Loop Requirements:
1. Twenty-five feet at each manhole
2. Ten feet at each hand hole
3. Ten feet at each patch panel
3.05 START-UP RESPONSIBILITY
A. Provide start-up services for all systems and equipment in accordance with Section 28
0000, Security General Requirements.
3.06 SYSTEM PERFORMANCE TESTING AND ADJUSTING PROCEDURES
A. Provide performance testing and adjusting of all systems and equipment in accordance with
The General Requirements and in accordance with Section 28 0000, Security General
Requirements.
B. Fiber Optic Media Testing
1. Comply with Fiber Optic Test Standards EIA-455-171 and EIA 526-14.
2. Conduct optical attenuation test on each roll of fiber cable delivered to the site before
beginning installation. Verify test meets manufacturer specifications. Provide test
data to Owner before beginning installation.
3. Conduct optical attenuation testing of each fiber strand after installation in duct bank
and raceways and before terminating connectors. Provide test data to Owner before
beginning terminations.
4. After completing terminations and terminating fiber at patch panels measure and
provide test reports verifying the following for each fiber strand at each device or
patch panel termination point:
a. Optical Power Loss (using an Optical Source and Optical Power Meter): On each
strand of each cable, at each device or patch panel termination point, measure
the actual optical power loss. Losses shall be measured at each operation
frequency used for each type of fiber cable: Multimode, 850nm and 1300nm;
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Single Mode, 1310nm and 1550nm.
b. Length/ Defects: Using an Optical Time Domain Reflectometer (OTDR)
measure the length of each strand of each cable at its termination points and
verify the cable is free of defects. OTDR testing shall be done in both directions.
5. Test Data Documentation: Provide two hard copy printouts and two CD-ROM copies
of test data. Power meter test data shall be in Excel spreadsheet format. Submit test
data samples for approval before commencing testing.
6. Optical Fiber Cable Testing w/ OTDR
a. The Contractor shall test all light-guide cable prior to the installation of the
cable. The Contractor shall assume all liability for the replacement of the cable
should it be found defective at a later date.
b. All fiber testing shall be performed on all fibers in the completed end to end
system. Testing shall consist of a bidirectional end to end OTDR trace
performed per TIA/EIA 455-61. The system loss measurements shall be
provided at 850 and 1310 nanometers for multimode fibers and 1310 and 1550
for single mode fibers.
c. Fiber links shall have a maximum loss of: (allowable cable loss per km)(km of
fiber in link) + (.4dB)(number of mated connectors) = maximum allowable loss
d. Loss numbers for the installed link shall be calculated by taking the sum of the
bidirectional measurements and dividing that sum by two.
e. Any link not meeting the requirements of the standard shall be brought into
compliance by the contractor, at no charge to the Owner.
f. Documentation shall be provided in both hard copy and Compact Disk (CD) to
the point of contact.
7. Optical Fiber Cable Testing w/ Power Meter
a. Multimode Horizontal Link Segments should be tested in one direction at the
850-nm or 1300-nm wavelength.
b. Multimode Backbone and Composite Link Segments should be tested in one
direction at both 850-nm and 1300-nm wavelengths.
c. Singlemode Horizontal Link Segments should be tested in one direction at the
1310-nm or 1550-nm wavelength.
d. Singlemode Backbone and Composite Link Segments should be tested in one
direction at both 1310-nm and 1550-nm wavelengths.
8. In compliance with TIA/EIA-526-14A “Optical Power Loss Measurements of Installed
Multimode Fiber Cable Plant” and TIA/EIA-526-7 “Measurement of Optical Power
Loss of Installed Single-Mode Fiber Cable Plant”, the following information should be
recorded during the test procedure:
a. Names of personnel conducting the test.
b. Type of test equipment used (manufacturer, model, serial number).
c. Date test is being performed.
d. Optical source wavelength, spectral width, and for multimode, the coupled
power ratio (CPR).
e. Fiber identification.
f. End point locations.
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g. Test direction.
h. Reference power measurement (when not using a power meter with a Relative
Power Measurement Mode).
i. Measured attenuation of the link segment.
j. Acceptable link attenuation.: Horizontal Link Segments are limited to 90
meters; therefore, the acceptable link attenuation can be based on the longest
installed link without introducing a significant error.
9. Acceptable Attenuation Values
a. The general attenuation equation for any link segment is as follows:
b. Acceptable Link Attn. = Cable Attn. + Connection Attn. + Splice Attn. + CPR Adj.
c. Note: A connection is defined as the joint made by mating two fibers
terminated with remateable connectors (e.g., ST, SC, SFF).
d. Attenuation Coefficients
1) MM Cable Attn. = Cable Length (km) ´ (3.40 dB/km@850nm or 1.00
dB/km@1300nm)
2) SM Cable Attn. = Cable Length (km) ´ (0.40 dB/km@1310nm or 0.30
dB/km@1550nm)
3) Connection Attn. (ST or SC connectors) = (Mated Connections ´ 0.4 dB)
4) Connection Attn. (SFF connectors) = (Mated Connections ´ 0.14 dB)
5) Splice Attn. (CSL or Fusion) = Splices ´ 0.30 dB
6) CPR Adj. = See table below
Multimode Light Source CPR Adjustment
Cat-1 Cat-2 Cat-3 Cat-4 Cat-5
Links with ST or SC
Connections
+ 0.50 0.00 - 0.25 - 0.50 - 0.75
Links with LC Connections + 0.25 0.00 - 0.10 - 0.20 - 0.30
10. Coupled Power Ratio Measurement
a. The Coupled Power Ratio of a light source is a measure of the modal power
distribution launched into a multimode fiber. A light source that launches a
higher percentage of its power into the higher order modes of a multimode
fiber produces a more over-filled condition and is classified as a lower category
than a light source that launches more of its power into just the lower order
modes producing an under-filled condition. Under-filled conditions result in
lower link attenuation, while over-filled conditions produce higher attenuation.
Therefore, adjusting the acceptable link attenuation equation to compensate
for a light source’s launch characteristics increases the accuracy of the test
procedure.
b. Procedure:
1) CPR Test Jumper-1 shall be multimode, 1 - 5 meters long with connectors
compatible with the light source and power meter and have the same
fiber construction as the link segment being tested.
2) CPR Test Jumper-2 shall be Singlemode, 1 - 5 meters long with
connectors compatible with the light source and power meter.
3) Clean the test jumper connectors and the test coupling per
manufacturer’s instructions.
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FIBER OPTIC COMMUNICATIONS 28 0513.1 - 9
4) Follow the test equipment manufacturer’s initial adjustment
instructions.
5) Connect multimode test jumper-1 between the light source and the
power meter. Avoid placing bends in the jumper that are less than 100
mm (4 inches) in diameter. See Figure 1.
Figure 1
6) If the power meter has a Relative Power Measurement Mode, select it. If
it does not, record the Reference Power Measurement (Pref). Note: If
the meter can display power levels in dBm, select this unit of
measurement to simplify subsequent calculations.
7) Disconnect test jumper-1 from the power meter. Do NOT disconnect the
test jumper from the light source.
8) Connect jumper-2 between the power meter and test jumper-1 using the
test coupling. The single mode jumper should include a high order mode
filter. This can be accomplished by wrapping the jumper three times
around a 30 mm (1.2 inches) diameter mandrel. See Figure 2.
Figure 2
9) Record the Power Measurement (Psum). If the power meter is in
Relative Power Measurement Mode, the meter reading represents the
CPR value. If the meter does not have a Relative Power Measurement
Mode, perform the following calculation:
a) If Psum and Pref are in the same logarithmic units (dBm, dBu, etc.):
CPR (dB) = | Psum - Pref |
b) If Psum and Pref are in watts: CPR (dB) = | 10 ´ log10 [Psum/Pref] |
3.07 FINAL PROCEDURES
A. Perform final procedures in accordance with The General Requirements, and in accordance
with Section 28 0000, Security General Requirements.
END OF SECTION
Power
Meter
Test Jumper-1Light
Source RXTX
Power
Meter
Multimode
Test Jumper-1Light
Source RXTX
Singlemode
Test Jumper-2
Coupling Mode Filter
Mandrel Wrap