1. Signamax Structured Cabling Seminar

2. INTRODUCTION

3. Generic Cabling Systems Evolution history: –60s, 70s, and 80s –Balanced and unbalanced transmission media –First adapters –Ethernet, Token Ring … –IBM, Cabletron, Bay Networks –Category 3 UTP, IBM Type I … –UDC, BNC, DB9, DB15, DB25 … –TIA/EIA (1985) –1991: ANSI/TIA/EIA-568 –ISO/IEC 11801, CENELEC EN 50173 … –First structured cabling systems

4. Why structured cabling? Major risks connected with non-standard cabling: –Network performance is lower than the one specified by the standards –High cost of making changes to the system (the so-called MAC – Moves, Adds, Changes procedures) –Inability to support new technologies

5. Why structured cabling? As the principles of structured cabling design and installation become increasingly recognized, the installed network equipment becomes less and less expensive and the efficiency of data transmission grows exponentially The structured cabling system has been the basis for information network as long as it exists. It is a foundation, which enables all business applications A well designed, assembled, and maintained cabling system reduces maintenance costs at all stages of its lifetime

6. What is structured cabling? ISO/IEC 11801 definition of structured cabling: –“Generic cabling – a structured telecommunications cabling system, capable of supporting a wide range of applications. Generic cabling can be installed without prior knowledge of the required applications. Application specific hardware is not a part of generic cabling.”

7. What is Structured Cabling? Structured Cabling –is not a telephone network –is not a data network –is not a cable TV network –is not a video surveillance network –is not a BMS, FLS, etc. network Structured Cabling – integrated building engineering infrastructure (upon which all listed above networks can be built)

8. Cabling Structure Generic telecommunications cabling system structure includes the following subsystems and additional elements: –Horizontal subsystem –Backbone subsystem –Work Area –Telecommunications Room –Equipment Room –Entrance Facility –Administration

9. Functional elements Generic telecommunications cabling system consists of the following functional elements: –Main Cross-connect (MC) –Level I Backbone subsystem cable –Intermediate Cross-connect (IC) –Level II Backbone subsystem cable –Horizontal Cross-connect (HC) –Horizontal subsystem cable –Consolidation Point (CP) –Multiuser Telecommunications Outlet Assembly (MuTOA or MuTO) –Telecommunications Outlet (TO) Groups of these functional elements are connected together to form cabling subsystems

10. INTERBUILDING (CAMPUS) BACKBONE SUBSYSTEM BUILDING B IC ER/EF HC TR HC TR TO WA HC TR IC ER/EF HC TR HC TR TO WA BUILDING C IC ER/EF HC TR HC TR HC TR TO WA BUILDING D HC TR IC ER/EF HC TR HC TR TO WA BUILDING E HC TR TO WA INTRABUILDING BACKBONE SUBSYSTEM HORIZONTAL SUBSYSTEM SERVICE ENTRANCE LEVEL II BUILDING A IC ER LEVEL I HC TR HC TR DP EF MC ER/EF ER Cabling Structure

12. Subsystems Structured cabling schemes consist of three cabling subsystems: –Level I Backbone –Level II Backbone –Horizontal cabling The cabling subsystems are connected together to create a generic cabling structure. The cross-connects provide the means to configure the cabling to support different topologies like bus, star and ring

13. Level I Backbone Subsystem The level I Backbone cabling subsystem includes –the Level I Backbone cables; –jumpers and patch cords in the Main Cross-connect; –the connecting hardware on which the Level I Backbone cables are terminated (at both the Main and Intermediate Cross-connects)

14. Level II Backbone Subsystem The Level II Backbone cabling subsystem includes –the Level II Backbone cables; –jumpers and patch cords in the Intermediate Cross-connect; –the connecting hardware on which the Level II Backbone cables are terminated (at both the Intermediate and Horizontal Cross-connects)

15. Horizontal Subsystem The Horizontal cabling subsystem includes –the Horizontal subsystem cables –any cross-connections to application specific equipment at Horizontal Cross-connect –the mechanical termination of the Horizontal subsystem cables at the Horizontal Cross-connect including the connecting hardware –the mechanical termination of the Horizontal subsystem cables at the Telecommunications Outlet –a Consolidation Point (optional)

16. Interconnection of Subsystems Hierarchical structure

17. Interconnection of Subsystems Cross-connects shall be located in –Telecommunications Rooms –Equipment Rooms –Entrance Facilities

18. Channel & Permanent Link Structured cabling consist of Channels and Permanent Links. The transmission performance of structured cabling between specific interfaces is detailed in terms of the Channel and the Permanent Link

19. Channel & Permanent Link The Channel is the transmission path between active equipment and the terminal equipment. For the purposes of testing, the Channel does not include the mated connection at the IT equipment.

20. Channel & Permanent Link The Permanent Link is the transmission path between the mated connectors located at the ends of the installed cable in a cabling subsystem. The Permanent Link contains the mated connections located at the ends of the installed cabling

21. Dimensioning & configuring The number and type of subsystems that are part of a generic cabling implementation depends on the geography and size of the campus or building, as well as on the user strategy. Generally there would be –one Main Cross-connect per campus –one Intermediate Cross-connect per building –one Horizontal Cross-connect per floor If the premises have only a single building, which is small enough to be served by a single Horizontal Cross-connect, a level I Backbone cabling subsystem is not required

22. Dimensioning & configuring There should be at least one Horizontal Cross-connect for every 1,000 m 2 (10,000 ft 2 ) of floor space reserved for offices If a floor area is over 1,000 m 2 (10,000 ft 2 ), additional Horizontal Cross-connects may be required to provide more effective service to the Work Area

23. Dimensioning & configuring A minimum of one Horizontal Cross-connect should be provided for every floor. If a floor contains few people (e.g. a lobby), this floor may be served from the Horizontal Cross- connect located on an adjacent floor. If a floor is sparsely populated (e.g. a lobby), it is permissible to serve this floor from the Horizontal Cross-connects located on an adjacent floor

24. Dimensioning & configuring The functions of multiple cross-connects may be combined

25. Dimensioning & configuring In some conditions, for example for reasons of security or reliability, redundancy may be built into a cabling design. This might form the basis for the design of generic cabling for a building, providing some protection against such hazards as fire damage or the failure of the public network feeder cable

26. STRUCTURED CABLING COMPONENTS

27. TRANSMISSION MEDIA Twisted Pair

28. Transmission Performance The following transmission performance categories of cabling components are used in structured cabling: Category 6a – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) cables whose transmission characteristics are specified up to 500 MHz Category 6 – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) cables whose transmission characteristics are specified up to 250 MHz continued on next page

29. Transmission Performance Category 5e – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) cables whose transmission characteristics are specified up to 100 MHz Category 5 – 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP) multipair cables whose transmission characteristics are specified up to 100 MHz Category 3 – 100-Ohm unscreened twisted-pair (UTP) multipair cables whose transmission characteristics are specified up to 16 MHz

30. TRANSMISSION MEDIA Optical Fiber

31. Transmission Performance Structured cabling optical fiber cable transmission performance: Fiber TypeWavelength Maximum Attenuation Bandwidth MM 62.5/125 (OM1) 850 nm3.5 dB/km200 MHz-km 1300 nm1.5 dB/km500 MHz-km MM 50/125 (OM2) 850 nm3.5 dB/km500 MHz-km 1300 nm1.5 dB/km500 MHz-km MM 50/125 (OM3) 850 nm3.5 dB/km1500 MHz-km 1300 nm1.5 dB/km500 MHz-km SM ISP (OS1) 1310 nm1.0 dB/km N/A 1550 nm1.0 dB/kmN/A SM OSP (OS1) 1310 nm0.5 dB/kmN/A 1550 nm0.5 dB/kmN/A

32. CONNECTING HARDWARE Twisted Pair

33. Transmission Performance The following of connecting hardware transmission performance categories are used in structured cabling: Category 6a – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) connecting hardware whose transmission characteristics are specified up to 500 MHz Category 6 – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) connecting hardware whose transmission characteristics are specified up to 250 MHz continued on next page

34. Transmission Performance The following of connecting hardware transmission performance categories are used in structured cabling: Category 5e – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) connecting hardware whose transmission characteristics are specified up to 100 MHz Category/level 1, 2, 3, 4, 5, 7, and 8 connecting hardware are not recognized as part of structured cabling

35. CONNECTING HARDWARE Optical Fiber

36. Connectors and Adaptors Connector designs shall meet the requirements of the corresponding TIA FOCIS (Fiber Optic Connector Intermateability Standard) document The multimode connector and adapter or a visible portion of them are identified by the color beige The singlemode connector and adapter or a visible portion of them are identified by the color blue

37. Splices Optical fiber splices used in structured cabling, fusion or mechanical, shall not exceed a maximum optical attenuation of 0.3 dB Optical fiber splices, fusion or mechanical used in structured cabling, shall have a minimum return loss of 20 dB for multimode, and 26 dB for singlemode

38. EQUIPMENT CABLES AND PATCH CORDS Twisted Pair

39. Transmission Performance The following categories of equipment and patch cords transmission performance are used in structured cabling: Category 6a – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) equipment and patch cords whose transmission characteristics are specified up to 500 MHz Category 6 – four-pair 100-Ohm unscreened twisted-pair (UTP) or screened twisted-pair (ScTP, FTP, S/FTP) equipment and patch cords whose transmission characteristics are specified up to 250 MHz Category 5e – unshielded (UTP) and shielded (ScTP, FTP, S/FTP) 100-Ohm twisted-pair equipment and patch cords with the bandwidth up to 100 MHz

40. EQUIPMENT CABLES AND PATCH CORDS Optical Fiber

41. Optical Fiber Cords Optical fiber equipment and patch cords, whether they are used for cross-connection or interconnection to active equipment, shall have such orientation that Position A goes to Position B on one fiber, and Position B goes to Position A on the other fiber of the fiber pair

42. Optical Fiber Cords Each end of the optical fiber equipment and patch cord shall be identified to designate Position A and Position B if the connector can be separated into its simplex components For alternate connector designs employing latches, the latch defines the positioning in the same way as the keys For simplex connectors, the connector that plugs into the receiver shall be considered Position A, and the connector that plugs into the transmitter shall be considered Position B

43. HORIZONTAL SUBSYSTEM

44. Horizontal Subsystem

45. CABLING SYSTEM

46. Horizontal Subsystem The Horizontal cabling subsystem is the part of structured cabling that extends from the Work Area Telecommunications Outlet to the Horizontal Cross-connect in the Telecommunications Room

47. Horizontal Subsystem The Horizontal cabling subsystem consists of –Horizontal subsystem cables –Telecommunications Outlet in the Work Area –connecting hardware at the Horizontal Cross-connect (interconnect or cross-connect) –any cross-connections to application specific equipment at the Horizontal Cross-connect –Consolidation Point (optional) –Multi-user Telecommunications Outlet (optional)

48. Topology TO CP WA TR FD (HC)

49. TELECOMMUNICATIONS PATHWAYS AND SPACES

50. Pathways and Spaces Horizontal subsystem pathways are facilities for the installation of telecommunications cable from the Telecommunications Room to the Work Area Telecommunications Outlet. Horizontal pathways encompass: –Underfloor pathways –Access floor –Conduit –Tray and wireway –Ceiling pathways –Perimeter pathways –Furniture pathways

51. BACKBONE SUBSYSTEM

52. Backbone Subsystem

53. CABLING SYSTEM

54. Backbone Subsystem The Backbone cabling subsystem is based on cabling segments, which link such connection centers as Main Cross-Connect, Intermediate Cross-connects, and Horizontal Cross-connects. In these centers Backbone subsystem links are connected with each other thereby forming Backbone subsystem channels that are used to distribute telecommunications services (voice, data, image, etc) to the Horizontal cabling subsystem Backbone cabling subsystem also includes cabling between buildings

55. Backbone Subsystem The Backbone cabling subsystem consists of the following elements: –Main Cross-connect (MC) –Intermediate Cross-connect(s) (IC) –Horizontal Cross-connect(s) (HC) –Level I Backbone subsystem connecting MC with IC(s) or with HC(s) –Level II Backbone subsystem connecting IC(s) with HC(s) –Backbone cabling segments connecting Entrance Facility (EF) with MC or with IC(s) –Patch cords connecting the segments of the Backbone subsystem in the MC and IC(s)

56. Star Topology

57. TELECOMMUNICATIONS PATHWAYS AND SPACES

58. Pathways and Spaces Backbone pathways consist of intra- and interbuilding pathways Backbone pathways may be either vertical or horizontal Interbuilding backbone pathways extend between buildings Intrabuilding backbone pathways are contained within a building

59. Pathways and Spaces One or more backbone facilities may exist within a building A backbone facility is generally formed by vertically stacking teecommunications closets with floor openings between them Tie pathways may also exist to install backbone media between telecommunications closets on the same floor

60. Pathways and Spaces Intra-building Backbone pathways encompass: –Underfloor pathways –Access floor –Conduit –Tray and wireway –Ceiling pathways –Perimeter pathways –Furniture pathways

61. Pathways and Spaces Inter-building Backbone pathways encompass : –Underground –Tunnels –Aerial

62. WORK AREA WA

63. Work Area

64. Work Areas are those spaces in a building where occupants interact with their telecommunications devices Work Area elements are situated between the Horizontal cabling system end point on the Telecommunications Outlet and Work Area active equipment The Work Area cabling system efficiency has a great impact on the distribution system operation The special feature of the Work Area cabling system is its versatility and ability to introduce changes easily

65. Work Area Work Area elements are: –Telecommunications Outlet or Multiuser Telecommunications Outlet –Equipment cables (cords) –Adapters, converters, couplers/splitters –Telecommunications equipment (telephones, computers, modems, terminals, etc.) Active telecommunications equipment and adapters (converters, couplers) are not considered part of the telecommunications cabling system and are not included into structured cabling

66. CABLING SYSTEM

67. Telecommunications Outlet Telecommunications Outlet/connector is a fixed connecting device where the horizontal cable terminates The Telecommunications Outlet/connector provides the interface to the Work Area cabling The Telecommunications Outlet/connector in the Work Area is the point at which end-user equipment "plugs into" the building telecommunications utility formed by the pathway, space, and building cabling system The Telecommunications Outlet/connector at the same time is an element of the Work Area and Horizontal subsystem

68. TELECOMMUNICATIONS PATHWAYS AND SPACES

69. Outlet Mount Box The mounting box of the Telecommunications Outlet is an intermediate element between the Horizontal subsystem cable and the Work Area cable The following are the most widely used ways to install the mounting boxes: –in or on the wall (or on any surface applicable for mounting) –in the perimetral pathway (cable raceway) –in the furniture pathway –on the flexible hose or conduit

70. TELECOM ROOM TR

71. Telecommunications Room

72. Telecommunications Rooms (TRs) offer many different functions to the cabling system and are often considered as a distinct subsystem within the hierarchical cabling system The most important function of a Telecommunications Room is the termination of Horizontal and Backbone subsystem cables to compatible connecting hardware A Telecommunications Room may also include the Intermediate Cross-connect or the Main Cross-connect for different parts of the Backbone cabling subsystem

73. Telecommunications Room A Telecommunications Room provides the means for administration and routing of the equipment cables/cords from the Horizontal Cross-connect to the telecommunications equipment In some cases, the Demarcation Point and associated protection apparatus may also be located in the Telecommunications Room A Telecommunications Room also provides a controlled environment to house telecommunications equipment, connecting hardware, and splice closures serving a part of the building

74. EQUIPMENT ROOM ER

75. Equipment Room

76. The main function of the telecommunications Equipment Room is to provide a specially equipped area to terminate Backbone subsystem cables on connecting hardware of the Main and Intermediate Cross-connects Equipment Rooms (ERs) are considered different from Telecommunications Rooms because of the nature or complexity of the equipment contained in them An Equipment Room may provide any or all of the functions of a Telecommunications Room or Entrance Facility

77. Equipment Room An Equipment Room provides a controlled environment to house telecommunications equipment, connecting hardware, splice closures, grounding and bonding facilities, and protection apparatus where applicable An Equipment Room may also house equipment terminations (and may contain Horizontal subsystem terminations for a part of the building) In many cases, the Equipment Room has access provider trunk terminations, premises network terminations, Demarcation Point (DP), and auxiliary terminations

78. ENTRANCE FACILITY EF

79. Entrance Facility

80. The Entrance Facility (EF) consists of the telecommunications service entrance to the building, including the entrance through the building wall, and continuing to the entrance room or space The Entrance Facility may contain the Backbone pathways that connect to the Main or Intermediate Cross-connect and to other buildings in campus situations Antenna entrances may also constitute part of the Entrance Facility

81. Entrance Facility The Entrance Facility includes the cables, connecting hardware, protection devices, and other equipment required to connect the outside plant facilities to the premises cabling The Demarcation Point (DP) between the regulated access providers and the customer premises cabling may be part of the Entrance Facility

82. CABLING SYSTEM INSTALLATION

83. Installation Quality The quality of installation is the most serious problem in implementation of the telecommunications cabling systems designed for the high-speed applications support There is a special system of requirements and conditions to the installation of the cabling systems to preserve the primary transmission characteristics of individual components within the links, channels, and systems Whereas the rules of installation are the methods and accuracy of the component connections and cable organization and routing, the cabling rules are an important factor of the system capacity, simplifying the operation of the installed cabling systems

84. Installation Quality Significant reduction of the signal distortion may be achieved by the observance of the following requirements: –Usage of special methods of the cable preparation –Termination of the transmission media at the connecting hardware according to the manufacturer’s instructions –Ordered arrangement of the cable bundles –Correct spatial orientation of the connecting hardware –Observance of the installation rules and manufacturer’s requirements to the installation of the telecommunications connecting hardware.

85. Installation Quality The common law made by the standards is “The installed twisted-pair cabling system shall be classified by the link or channel component performance showing the worst transmission characteristics” Cat6 + Cat6 + Cat6 + Cat6 + Cat6 + Cat6 + Cat6 + Cat6 + Cat3 = Cat3 !!! This classification does not depend on the obtained field test results

86. CABLING SYSTEM ADMINISTRATION

87. Administration Concept

88. Labeling Labeling means marking of an element of the telecommunications infrastructure with an identifier and any other relevant information (optional)

89. Records A record means collecting information about or related to a specific element of the telecommunications infrastructure

90. Linkages Linkages mean the logical connections between identifiers and records In addition, a linkage between the records is established when one of the identifiers included in the record points to the other record Infrastructural records may be also linked to some other records (for example, databases of employees, an active equipment, data transmission systems, etc.) not included in the scope of this Manual Pathways Spaces Connecting Hardware Connecting Hardware Positions Bonding and Grounding System Elements Pathways Spaces Connecting Hardware Connecting Hardware Positions Bonding and Grounding System Elements Cable Record

91. Reports The information selected from the various telecommunications infrastructural records is presented in reports The reports may be generated from a single set of records or several sets of interlinked records It may be preferred that the information from these reports is presented in several different formats

92. Drawings Drawings are used to illustrate different stages of telecommunications infrastructural design and installation

93. Work Orders Work orders are used for documentation of the operations required to introduce modifications affecting the telecommunications infrastructure A work order may involve: –Spaces –Pathways –Cables –Splices –Connecting Hardware –Connecting Hardware Positions –Bonding and Grounding Elements

94. LABELING

95. Labels Based on the attachment method, labels may be divided by the following categories: –Insert –Adhesive –Other

96. Insert Labels An insert label shall be securely fastened in place under the normal operating conditions and application, which the labeled infrastructural element is exposed to

97. Adhesive Labels When selecting adhesive labels, attention should be given to choosing material substrates designed for use on the specific surfaces to which the labels are to be attached In harsh environments, sleeving or tagging may be more suitable for cable marking Labels for elements where the label is essentially flat should be carefully selected so that the adhesive is appropriate for the element surface

98. CABLING SYSTEM CERTIFICATION TESTING

99. TWISTED-PAIR CABLING TESTING

100. General This section determines the characteristics of field test instruments, test methods, test configurations and minimum transmission requirements for a structured cabling based on 100-Ohm twisted-pair cable and connecting hardware The requirements are aimed at field-testing of installed twisted-pair cabling Channels/Permanent Links using field test instruments

101. TEST CONFIGURATIONS

102. Test Configurations Certification testing may be performed for either of two or both models of the cabling system: –Channel –Permanent Link

103. TEST PARAMETERS

104. ParameterCategory 5eCategory 6Category 6A 1 Wire map (T568A/T568B)  Screen/shield continuity  2 Length ( L )  3 Insertion loss ( IL )  4 Pair-to-pair near-end crosstalk ( NEXT ) loss  5 Power sum near-end crosstalk ( PSNEXT ) loss  6 Pair-to-pair equal-level far-end crosstalk ( ELFEXT ) loss  Pair-to-pair attenuation-to crosstalk ratio far end ( ACRF )  7 Power sum equal-level far-end crosstalk ( PSELFEXT ) loss  Power sum attenuation-to crosstalk ratio far end ( PSACRF )  8 Alien near-end crosstalk ( ANEXT ) loss  9 Alien far-end crosstalk ( AFEXT ) loss  10 Power sum alien near-end crosstalk ( PSANEXT ) loss  11 Average power sum alien near-end crosstalk ( PSANEXT ) loss  12 Power sum attenuation to alien crosstalk ratio far-end ( PSAACRF )  13 Average power sum attenuation to alien crosstalk ratio far-end ( PSAACRF )  14 Return loss ( RL )  15 Propagation delay ( PD )  16 Propagation delay skew ( PDS ) 

105. FIELD TESTERS

106. Measurement Accuracy Minimum efficiency levels were defined for field testers: –Level IIe–category 3, 5, 5e cabling systems –Level III–category 3, 5, 5e, 6 cabling systems –Level IIIe–category 3, 5, 5e, 6, 6a cabling systems –Level IV–category 3, 5, 5e, 6, 6a, 7 cabling systems

107. TEST RESULTS

108. PASS/FAIL Criteria A Pass or Fail result for each parameter shall be determined by the permissible parameter limits The parameter test result shall be marked with an asterisk (*) when it is closer to the test limit than the measurement accuracy published by the field tester manufacturer for the Permanent Link and Channel

109. PASS/FAIL Criteria 1 – Parameter allowable limit 2 – Measurement accuracy upper limit 3 – Measured parameter value 4 – Measurement accuracy lower limit 12341234

110. PASS/FAIL Criteria PASS: A measured value, the upper and the lower margins of the measurement accuracy of the field tester are below the permissible limit It gives rise to unambiguous interpretation of the result as positive The test result is positive, “passed testing”

111. PASS/FAIL Criteria PASS*: In spite of the fact that the measured value is below the permissible level, the upper margin of the measurement accuracy is below the permissible level, therefore there is a certain probability of permissible limit overrunning by the actual parameter value The test result is “conditionally passed testing”

112. PASS/FAIL Criteria FAIL*: In spite of the fact that the measured value is above the permissible level, the lower margin of the measurement accuracy is below the permissible level, therefore there is a certain probability of the actual parameter value to be kept within the permissible limits The test result is “conditionally failed testing”

113. PASS/FAIL Criteria FAIL: The measured value, the upper and the lower margins of the measurement accuracy of the field tester are above the permissible level It undoubtedly indicates the negative result The test result is negative, “failed testing”

114. PASS/FAIL Criteria An overall Pass or Fail condition shall be determined by the results of mandatory individual tests Any Fail or Fail* shall result in a general Fail In order to achieve a general Pass condition, any individual results must be Pass or Pass*

115. OPTICAL FIBER CABLING TESTING

116. General This section provides a description of the certification testing rules for optical fiber cabling systems based on multimode (62.5/125 and 50/125 micron) and singlemode transmission media

117. TEST CONFIGURATIONS

118. Optical Fiber Link An optical fiber link segment is the passive cabling, to include cable, connectors, and splices (if present), between two optical fiber connecting hardware termination points

119. TEST PARAMETERS

120. Test Parameters Testing of the optical fiber components and systems includes measurements of several major characteristics For the certification testing of the majority of the optical fiber cabling systems, installed in the buildings and campus environments, it is usually sufficient to get the data on insertion loss and optical length Bandwidth (multimode) and dispersion (singlemode) are important performance parameters, however as they cannot be adversely affected by installation practices, they should be tested by the fiber manufacturer and do not require any field testing

121. Insertion Loss Link insertion loss is based on the use of the One Reference Jumper Method specified by ANSI/TIA/EIA-526-14-A, Method B and ANSI/TIA/EIA-526-7, Method A.1 The test configuration of the link insertion loss does not include any active or passive devices other than cable, connectors and splices (i.e., optical bypass switches, couplers, repeaters or optical amplifiers)

122. FIELD TESTERS

123. Field Testers Insertion loss testing of optical fiber structured cabling can be performed with: –Power meter and light source or –Field testers including the optical fiber detectors within their sets, facilitating insertion loss tests

124. Field Testers Length testing of optical fiber structured can be performed with: –OTDR or –Field testers including the optical fiber detectors within their sets, facilitating the length tests or –Any other test optical fiber instrument for the optical fiber length measurement