CHAPTER 9
Preparation Overview
•
T640 Site Preparation Checklist on page 117
•
T640 Chassis Grounding Cable and Lug Specifications on page 118
•
T640 Physical Specifications on page 119
•
T640 Rack Requirements on page 120
•
T640 Clearance Requirements for Airflow and Hardware Maintenance on page 122
•
T640 Environmental Specifications on page 122
T640 Site Preparation Checklist
The checklist in Table 64 on page 117 summarizes the tasks you need to perform when
preparing a site for router installation.
Table 64: Site Preparation Checklist
DatePerformed ByFor More InformationItem or Task
Environment
“T640 Environmental Specifications”
on page 122
Verify that environmental factors such as
temperature and humidity do not exceed router
tolerances.
Power
“T640 DC Power Distribution” on
page 130
“T640 DC Power Cable and Lug
Specifications” on page 132
Measure distance between external power
sources and router installation site.
“T640 Chassis Grounding Cable and
Lug Specifications” on page 118
Locate sites for connection of system
grounding.
“T640 DC Power System
Requirements” on page 128
Calculate the power consumption and
requirements.
Rack
“T640 Rack Requirements” on
page 120
Verify that your rack meets the minimum
requirements for the installation of the router.
117Copyright © 2017, Juniper Networks, Inc.