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T640 Site Preparation Checklist


The checklist in Table 1 summarizes the tasks you need to perform when preparing a site for router installation.

Table 1: Site Preparation Checklist

Item or Task

For More Information

Performed By



Verify that environmental factors such as temperature and humidity do not exceed router tolerances.

T640 Environmental Specifications


Measure distance between external power sources and router installation site.

T640 DC Power Distribution

T640 DC Power Cable and Lug Specifications


Locate sites for connection of system grounding.

T640 Chassis Grounding Cable and Lug Specifications


Calculate the power consumption and requirements.

T640 DC Power System Requirements


Verify that your rack meets the minimum requirements for the installation of the router.

T640 Rack Requirements


Plan rack location, including required space clearances.

T640 Clearance Requirements for Airflow and Hardware Maintenance


If a rack is used, secure rack to floor and building structure.

T640 Rack Requirements


Acquire cables and connectors:

  • Determine the number of cables needed based on your planned configuration.

  • Review the maximum distance allowed for each cable. Choose the length of cable based on the distance between the hardware components being connected.

Calculating Power Budget and Power Margin for Fiber-Optic Cables


Plan the cable routing and management.

Maintaining T640 PICs and PIC Cables