Guide To Design & Specification Of Structured Cabling Systems - ACCL

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Guide to Design & Specification of Structured Cabling Systems

DISCLAIMER . 10 PROCEDURE GUIDE INTRODUCTION . 11 ACTIVE COMMUNICATION COMPANY LIMITED . 12 LOCAL AREA NETWORKS . 13 PEER-TO-PEER NETWORKS . 14 CLIENT – SERVER NETWORKS . 15 THIN CLIENT – SERVER . 15 SUMMARY . 16 NETWORK TOPOLOGIES . 16 BUS TOPOLOGY . 16 RING TOPOLOGY . 17 STAR TOPOLOGY. 18 HYBRID TOPOLOGIES . 18 TOPOLOGY EXPANSION & SWITCHES . 19 EXPANSION VIA HUBS. 19 EXPANSION VIA SWITCHES . 19 TRANSMISSION THEORY . 20 ANALOGUE SIGNALS & FREQUENCY . 20 DIGITAL TRANSMISSION AND BIT RATES . 21 BANDWIDTH . 22 DATA THROUGHPUT . 22 ACTUAL DATA TRANSFER . 23 TOKEN RING . 23 ETHERNET TRANSMISSION . 23 ETHERNET FRAMES . 24 BIT ERRORS . 25 TYPES OF INTERFERENCE. 26 BASIC PHYSICS. 27 VOLTAGE . 27 RESISTANCE . 27 AMPS . 27 OHMS LAW . 27 THE OSI REFERENCE MODEL . 28 SERVICES PROVIDED BY EACH PROTOCOL LAYER. 28 Layer 1:. 28 Layer 2:. 29 Layer 3:. 29 Layer 4:. 29 Layer 5:. 29 Layer 6:. 29 Layer 7:. 29 ‘HOP-BY-HOP’ NETWORK-WIDE AND ‘END-TO-END’ COMMUNICATION. 30 THE BASIC STRUCTURE OF LAN CABLING . 31 GENERIC CABLING – SUBSYSTEMS . 31 The three cabling sub-systems are: . 31 The campus backbone cable sub-system consists of the following elements:. 32 The building backbone cable sub-system consists of the following elements: . 32 THE HORIZONTAL CABLING SUB-SYSTEM CONSISTS OF THE FOLLOWING ELEMENTS: . 32 MAXIMUM CABLE LENGTHS . 32

MULTI-USER TELECOMMUNICATIONS OUTLET . 33 MUTO DESIGN IN HORIZONTAL CABLING . 33 THE DESIGN/INSTALLATION CRITERIA FOR THE USE OF A MUTOA INCLUDES THE FOLLOWING: . 33 CONSOLIDATION POINT . 34 The rules for CP design and installation are as follows: . 34 PLANNING GUIDE . 36 EN 5031 . 36 EN 50173 – 1 . 36 EN 50174 – 1 . 36 EN 50174 – 2. 36 EN 50174 – 3. 36 EN 50310 . 36 EN 50174 – 1. 36 EN 50174 – 2 . 36 EN 50174 – 3 . 36 EN 50310 . 36 EN 50346 . 36 EN 50174 – 1. 36 DESIGN . 37 LOGICAL PHASE. 37 INFRASTRUCTURE LAYOUT PHASE . 37 IMPLEMENTATION PHASE . 37 THERE MAY ALSO BE A REQUIREMENT TO OFFER END-USER TRAINING AT THIS STAGE; I.E. EXPLAINING THE LAYOUT SCHEME OF THE PATCH PANELS AND WHICH PATCH PANELS ARE ASSOCIATED WITH DIFFERENT AREAS. 38 OPERATIONS AND MAINTENANCE PHASE . 38 PLANNING RULES. 38 WIRING CONSIDERATIONS . 38 HORIZONTAL CABLE . 39 The information on UTP horizontal cable segregation can be summarized as: . 40 WIRING WITHIN BUILDINGS . 40 EXTERNAL WIRING. 42 PLANNING – ROUTING OF CABLES . 43 CABLE ROUTING OPTIONS . 45 PLANNING – INDEPENDENT TRUNKING/CONDUIT SYSTEM . 46 FIRE CONSIDERATIONS . 47 PLANNING – SECURITY . 47 PLANNING – WAYLEAVES . 48 COPPER DATA COMMUNICATION CABLE . 49 UTP: UNSHIELDED TWISTED PAIR . 49 FTP: FOIL TWISTED PAIR . 49 STP: SHIELDED TWISTED PAIR . 50 PIMF: SCREENED TWISTED PAIR CABLE . 50 SOLID & STRANDED CONDUCTORS . 51 UNDER CARPET CABLE . 51 CONDUCTOR SIZES . 51 VOICE CABLES. 52 CABLE COLOUR CODING . 52 PATCH CORDS . 52 CATEGORIES & CABLE CLASSES . 53 OPTICAL FIBRE IN DETAIL . 54 INTRO TO OPTICAL FIBRE . 54

LIGHT AS THE TRANSMISSION SYSTEM . 55 FIRST WINDOW OF OPERATION . 55 SECOND WINDOW OF OPERATION . 55 THIRD WINDOW OF OPERATION . 56 MULTIMODE . 56 SINGLEMODE. 57 OPTICAL FIBRE TRANSMISSION CHARACTERISTICS. 57 ATTENUATION OR OPTICAL POWER LOSS PER KM . 57 MICRO BENDING LOSS . 58 FRESNEL REFLECTION LOSSES . 58 LOSS-WAVELENGTH CHARACTERISTIC . 59 INTRINSIC OPTICAL FIBRE LOSS . 59 COMPLIANCE TESTING. 61 PULSE DISPERSION . 61 IMPACT OF ISO-11801: 2000 . 62 SINGLEMODE. 62 MULTIMODE . 62 OPTICAL TIME DOMAIN REFLECTOMETER (OTDR). 63 OPTICAL FIBRE INSTALLATION. 63 OPTICAL FIBRE INSTALLATION PRINCIPLES . 63 OPTICAL FIBRE PRE-TEST . 63 CABLE INSTALLATION (PLACEMENT AND HAULING AND SECURING) . 64 OPTICAL FIBRE MAXIMUM TENSILE LOADING . 64 STATIC AND DYNAMIC TENSION . 65 MINIMUM BENDING RADIUS . 65 BOWING, BENDING STRETCHING & PRESSING LOSSES . 65 MICRO BENDING LOSSES . 66 MACRO BENDING LOSSES. 66 TERMINATION OF OPTICAL FIBRES. 66 Desirable features of an optical fibre interconnection device include: . 67 FIBRE CONNECTOR LOSSES. 67 POWER BUDGET . 67 OPTICAL POWER BUDGET - LINK LOSSES . 68 TESTING OVERVIEW. 69 WIRE-MAP . 70 RESULTS INTERPRETATION: WIRE-MAP . 71 WIRE-MAP TROUBLESHOOTING RECOMMENDATIONS . 71 NEAR END CROSSTALK . 72 RESULTS INTERPRETATION: NEAR END CROSSTALK . 73 NEAR END CROSSTALK TROUBLESHOOTING RECOMMENDATIONS . 73 CABLE GEOMETRY . 74 CHARACTERISTIC IMPEDANCE. 75 INPUT IMPEDANCE . 75 NVP. 76 ATTENUATION TO CROSSTALK RATIO . 76 RESULTS INTERPRETATION: ATTENUATION TO CROSSTALK RATIO . 76 ATTENUATION TO CROSSTALK RATIO TROUBLESHOOTING RECOMMENDATIONS . 77

RETURN LOSS. 77 RESULTS INTERPRETATION: RETURN LOSS . 78 RETURN LOSS TROUBLESHOOTING RECOMMENDATIONS . 78 POWER-SUM . 78 FAR END CROSSTALK . 79 LENGTH . 79 RESULTS INTERPRETATION: LENGTH . 80 LENGTH TROUBLESHOOTING RECOMMENDATIONS . 80 DC LOOP RESISTANCE . 81 RESULTS INTERPRETATION: DC LOOP RESISTANCE . 81 DC LOOP RESISTANCE TROUBLESHOOTING RECOMMENDATIONS . 81 PROPAGATION DELAY . 82 RESULTS INTERPRETATION: PROPAGATION DELAY . 82 PROPAGATION DELAY TROUBLESHOOTING RECOMMENDATIONS . 82 PROPAGATION DELAY SKEW . 83 RESULTS INTERPRETATION: PROPAGATION DELAY SKEW . 83 PROPAGATION DELAY SKEW TROUBLESHOOTING RECOMMENDATIONS . 83 ATTENUATION /INSERTION LOSS . 83 RESULTS INTERPRETATION: ATTENUATION OR INSERTION LOSS . 84 ATTENUATION TROUBLESHOOTING RECOMMENDATIONS . 84 INSERTION LOSS DEVIATION . 84 RESULTS INTERPRETATION: INSERTION LOSS DEVIATION . 85 POWER-SUM NEXT. 86 RESULTS INTERPRETATION: POWER-SUM NEXT . 86 POWER-SUM NEXT TROUBLESHOOTING RECOMMENDATIONS . 86 POWER-SUM ATTENUATION TO CROSSTALK RATIO (PSACR). 86 RESULTS INTERPRETATION: POWER-SUM ATTENUATION TO CROSSTALK RATIO (PSACR) . 87 POWER-SUM ATTENUATION TO CROSSTALK RATIO (PSACR) TROUBLESHOOTING RECOMMENDATIONS . 87 FAR END CROSSTALK (FEXT). 87 EQUAL LEVEL FAR END CROSSTALK (ELFEXT) . 87 RESULTS INTERPRETATION: EQUAL LEVEL FAR END CROSSTALK (ELFEXT) . 87 EQUAL LEVEL FAR END CROSSTALK (ELFEXT) TROUBLESHOOTING RECOMMENDATIONS . 88 POWER-SUM EQUAL LEVEL CROSSTALK (PSELFEXT). 88 RESULTS INTERPRETATION: POWER-SUM EQUAL LEVEL CROSSTALK (PSELFEXT) . 88 COUPLING ATTENUATION . 88 RESULTS INTERPRETATION: COUPLING ATTENUATION . 88 ALIEN CROSSTALK . 88 FIBRE OPTICS CABLE TESTING . 89 HOW IS FIBRE TESTED? . 89 WHAT IS REALLY REQUIRED?. 89 Optical Fibre tools for the field include: . 90 FIBRE AND COPPER MEASUREMENT COMPARED . 90 TEST METHODOLOGY . 90 EN/ISO PERMANENT LINK . 91 TIA/EN/ISO CHANNEL . 91 STRUCTURED CABLING STANDARDS. 93 ISO 11801 . 93 BS EN 50173 . 93 BS EN 50174 PART 1 . 93 BS EN 50174 Part II . 93 BS EN 50174 Part III . 93 BS EN 50310 . 93 BS EN 50346 . 93 BS 6701 . 93 METHOD & STANDARDS OF WORKS . 94 HEALTH & SAFETY OBLIGATIONS . 94

ACCL is required by the HSE to provide all employees the following:. 94 ACCL further requires all employees: . 94 RISK ASSESSMENT. 94 SEVERITY (INJURY). 95 LIKELIHOOD (INJURY) . 95 RISK RATING . 95 CONFINED SPACES . 96 Examples of confined spaces include: . 96 Environments where workers may become unconscious or have a fatal incident due to either:. 97 Environments where workers may become unconscious or have a fatal incident due to either:. 97 OVERHEAD WORK . 97 LADDERS . 98 ROOF TOPS . 99 UNDER-FLOOR/GROUND WORKING . 99 GENERAL HOUSEKEEPING . 100 SAFETY . 100 CHEMICAL SAFETY . 100 INSTALLATION SAFETY . 100 ELECTRICAL SAFETY . 101 SIGN SAFETY . 101 FIRE EXTINGUISHERS . 101 The four types of fire extinguisher include: . 102 HALON SYSTEMS . 102 ASBESTOS . 103 ACCL ensures that if any employee who in contact with asbestos that:. 104 ACCL further ensures that employees will not: . 104 ASBESTOS FURTHER: SUGGESTED READING: . 104 BASIC DATA & TELECOMMUNICATIONS TERMINOLOGY. 105 10BASE2. 105 10BASE5. 105 10BASEFL, FB, FP. 105 10BASET . 105 100BASEFX . 105 100BASESX. 105 100BASET . 105 100BASET4 . 105 100VG-A

disclaimer . 10 procedure guide introduction . 11

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