5.1.1 Cable Assembly Precautions.....................................................................................................................................38

5.1.2 Assembling Power Cables.........................................................................................................................................39

5.1.3 Assembling Ethernet Cables......................................................................................................................................48

5.1.4 Installing Cable Accessories......................................................................................................................................62

5.1.5 Replacing the Mold of the Crimping Pliers...............................................................................................................77

5.2 Environmental Requirements for Device Operation....................................................................................................81

5.2.1 Environmental Requirements for an Equipment Room............................................................................................81

5.2.2 Requirements for Power Supply................................................................................................................................88

5.3 Equipment Grounding Specifications...........................................................................................................................91

5.3.1 General Grounding Specifications.............................................................................................................................91

5.3.2 Grounding Specifications for an Equipment Room..................................................................................................92

5.3.3 Grounding Specifications for Devices.......................................................................................................................92

5.3.4 Grounding Specifications for Communications Power Supply.................................................................................93

5.3.5 Grounding Specifications for Signal Cables.............................................................................................................93

5.3.6 Specifications for Laying Out Grounding Cables.....................................................................................................94

5.4 Engineering Labels for Cables.....................................................................................................................................94

5.4.1 Introduction to Labels................................................................................................................................................95

5.4.2 Engineering Labels for Optical Fibers.....................................................................................................................103

5.4.3 Engineering Labels for Network Cables.................................................................................................................106

5.4.4 Engineering Labels for User Cables........................................................................................................................107

5.4.5 Engineering Labels for Power Cables.....................................................................................................................108

5.5 Guide to Using Optical Modules................................................................................................................................111

5.6 Fault Tag.....................................................................................................................................................................114

Issue 11 (2015-05-18)

Huawei Proprietary and Confidential

Table of Contents