Chapter 5: C4c CMTS Installation Requirements
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 129
Know where the emergency power-off switch is located for the room in which you are working.
Disconnect all power and external cables before moving the chassis.
Do not work alone if potentially hazardous conditions exist.
Never assume that power has been disconnected; always check.
Do not perform any action that makes the equipment unsafe or might create a potential danger to people.
Examine your work area for possible hazards such as ungrounded power extension cables, missing safety grounds, or
wet floors.
CAUTION: Be sure to connect the chassis to protective earth ground before applying power or inserting modules. An
ungrounded chassis may damage components.
CAUTION: The ports of the C4c CMTS chassis are suitable for connection to intra-building or unexposed wiring or cabling
only. The ports of the chassis MUST NOT be metallically connected to interfaces which connect to outside plant (OSP) or its
wiring. These interfaces are designed for use as intra-building interfaces only, requiring isolation from the exposed OSP
cabling. They are Type 2 or Type 4 ports as described in GR-1089-CORE, Issue 4. Finally, the addition of Primary Protectors
is not sufficient protection from electrical shock in order to connect these interfaces metallically to OSP wiring.
Electrostatic Discharge (ESD)
Preventing Electrostatic Discharge Damage
Electrostatic Discharge (ESD) can damage equipment and impair electrical circuitry. ESD occurs when printed circuit
modules are improperly handled. It may result in module failure or intermittent problems.
The C4c CMTS contains replaceable printed circuit modules. Modules are equipped with a metal faceplate that features
Electromagnetic Interference (EMI) shielding and lever-action latches. Handle the modules by their latches and avoid
touching the printed circuit board and connector pins.
Although the metal faceplate helps to protect the printed circuit modules from ESD, wear an antistatic wrist or ankle strap
whenever handling the modules. Ensure that the anti-ESD device makes good skin contact. The chassis is equipped with
four sockets in which you can ground plug-in wrist straps.
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