The spring clip jaws do not open wide enough to fit directly over the head of the lug screw or the
lug barrel.
If you are using an ESD wrist strap that is equipped with an alligator clip, attach the alligator clip
directly over the head of the system ground lug screw or to the system ground lug barrel.
Note
In addition, follow these guidelines when handling modules:
• Handle carriers by available handles or edges only; avoid touching the printed circuit boards or connectors.
• Place a removed component board-side-up on an antistatic surface or in a static-shielding container. If
you plan to return the component to the factory, immediately place it in a static-shielding container.
• Never attempt to remove the printed circuit board from the metal carrier.
For safety, periodically check the resistance value of the antistatic strap. The
measurement should be between 1 and 10 megohm (Mohm).
Caution
Establishing the System Ground
This system ground is referred to as the network equipment building system (NEBS) ground.
Note
You must use the NEBS ground on AC-powered systems if you are installing this equipment in a U.S. or
European Central Office.
The NEBS ground provides additional grounding for EMI shielding requirements and grounding for the
low-voltage supplies (DC-DC converters) on the modules, and is intended to satisfy the Telcordia Technologies
NEBS requirements for supplemental bonding and grounding connections. You must observe the following
system grounding guidelines for your chassis:
• You must install the NEBS ground connection with any other rack or system power ground connections
that you make. The system ground connection is required if this equipment is installed in a U.S. or
European Central Office.
• You must connect both the NEBS ground connection and the power supply ground connection to an
earth ground. The NEBS ground connection is required if this equipment is installed in a U.S. or European
Central Office.
• You do not need to power down the chassis because this device is equipped with AC-input power supplies.
Required Tools and Equipment
To connect the system ground, you need the following tools and materials:
• Grounding lug—A two-hole standard barrel lug. Supports up to 6 AWG wire. Supplied as part of accessory
kit.
Cisco UCS 6200 Series Fabric Interconnect Hardware Installation Guide
OL-24475-0334
Installing the Cisco UCS 6200 Series Fabric Interconnect
Establishing the System Ground
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