Chapter 4: C4 CMTS General Installation Requirements
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
103
WARNING: Ensure that the rack is stable and properly bolted to the floor so that weight of the chassis does not make it
unstable.
How to Rack Mount the C4 CMTS
1.
Attach the supplied green protective earth ground cable to either the side or rear termination point of the chassis
prior to placing the chassis in the rack. The other end of the protective earth ground cable should extend to the back.
See see "
The attachment screws for this cable are shipped pre-installed in the chassis. Remove the attachment screws from the
desired ground cable location on the chassis and reattach. The recommended torque for these screws is 10.0 ±0.5 inch-
pounds.
2.
If using telco type racks, be sure to bolt the rack to the floor.
3.
Position the C4 CMTS in rack.
4.
Install rack bolts to secure the C4 CMTS in position.
5.
Secure the loose end of protective earth ground cable to a suitable protective earth ground termination point within
the building installation. If attaching this cable to the frame, ensure that the attachment point is bare metal and that
the frame is bonded to a suitable protective earth ground.
Grounding the Chassis
The C4 CMTS chassis must be properly connected to protective earth ground for safety compliance. There are two places
you can connect the protective earth ground wire to the chassis. One is located on the side of the chassis; the other is
located on the rear of the chassis between the PCMs (refer to the figure below). Install the chassis termination end of the