Chapter 5: C4c CMTS Installation Requirements
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 134
Installation Considerations
Rack Mounting
The C4c CMTS is designed to be mounted in a standard 7-foot by 19-inch equipment rack, compliant with EIA RS-310. Ensure
that the rack does not block the airflow vents on either side of the chassis.
Uneven mechanical loading of an equipment rack can be hazardous. Plan the installation so that the weight of the equipment is
evenly distributed across the vertical height of the rack. Depending on the number of modules supported, some C4c CMTS
configurations are heavier than others. Place the heaviest units toward the bottom of the rack.
Note: A half-inch of space is required under the lowest C4c CMTS chassis installed in the frame. Additional chassis can be
mounted directly above the lowest C4c chassis.
Chassis Placement
Select an appropriate installation area that is dry, relatively dust free, well-ventilated, and air conditioned. Be sure the
floor is capable of supporting the combined weight of the rack with the installed equipment.
CAUTION: The C4c CMTS generates a significant amount of heat. Allow enough space around the C4c CMTS for adequate
ventilation and do not block the air vents. Inadequate ventilation could cause the system to overheat.
Clearance
Allow sufficient clearance around the rack for maintenance. If the rack is mobile (not recommended), place the C4c CMTS
near a wall or cabinet for normal operation and pull it out for maintenance (installing or moving port adapters, connecting
cables, and replacing or upgrading components). Be sure there is enough cable length available to pull the C4c CMTS out
for repairs or adjustments if necessary.
Note: Route any front cables to the left side (when facing the system) of the C4c chassis to avoid interference with the Fan
Tray Module.
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