Juniper MX2020 Hardware Manual page 6

Site Planning, Preparation, and Specifications
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Planning and Preparing the Site | 121
Overview of Preparing the Site for the MX2020 Router | 121
MX2020 Site Preparation Checklist | 123
MX2020 Physical Specifications | 125
MX2020 Rack Requirements | 130
Rack Size and Strength | 130
Spacing of Mounting Bracket Holes | 132
Connection to the Building Structure | 132
MX2020 Cabinet Size and Clearance Requirements | 133
Clearance Requirements for Airflow and Hardware Maintenance for the MX2020 Router | 133
MX2020 Cabinet Airflow Requirements | 136
MX2020 Router Environmental Specifications | 137
MX2000 Router Grounding Specifications | 138
MX2000 Series Chassis Grounding Points Specifications | 139
MX2000 Series Router Grounding Cable Lug Specifications | 139
MX2000 Series Router Grounding Cable Specifications | 140
MX2020 Chassis Moving Guidelines | 141
MX2020 Moving Requirements and Guidelines Using a Router Transport Kit | 142
Router Transport Kit Turning Radius | 142
Router Transport Kit Requirements | 143
Rack-Mounting Requirements | 146
Transceiver and Cable Specifications | 149
Calculating Power Budget and Power Margin for Fiber-Optic Cables | 149
Calculating Power Budget for Fiber-Optic Cable | 149
Calculating Power Margin for Fiber-Optic Cable | 150
Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 151
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 151
Attenuation and Dispersion in Fiber-Optic Cable | 152
CB-RE and RCB Interface Cable and Wire Specifications for MX Series Routers | 153
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