Patton electronic 4110, 4520 user manual Preventing electrostatic discharge damage

SmartNode 4520 & 4110 Series User Manual About this guide

For units with an external power adapter, the adapter shall be a listed Lim- ited Power Source.

WARNING

Hazardous network voltages are present in WAN ports regardless of whether power to the SmartNode is ON or OFF. To avoid electric shock, use caution

WARNING when near WAN ports. When detaching the cables, detach the end away from the SmartNode first.

Before opening the chassis, disconnect the telephone network cables to avoid contact with telephone line voltages. When detaching the cables, detach the

WARNING end away from the SmartNode first.

Do not work on the system or connect or disconnect cables during periods of lightning activity.

WARNING

In accordance with the requirements of council directive 2002/ 96/EC on Waste of Electrical and Electronic Equipment (WEEE), ensure that at end-of-life you separate this product from other waste and scrap and deliver to the WEEE collection system in your country for recycling.

Preventing electrostatic discharge damage

When starting to install interface cards place the interface card on its shielded plastic bag if you lay it on your bench.

Electrostatic Discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when electronic printed circuit cards

CAUTION are improperly handled and can result in complete or intermit- tent failures. Do the following to prevent ESD:

•Always follow ESD prevention procedures when removing and replacing cards.

•Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground.

•To properly guard against ESD damage and shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground yourself by touching the metal part of the chassis.

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