Patton electronic SmartNode 4400 - Manual (Page 12)

12
SmartNode 4400 Series Getting Started Guide About this guide
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 are improperly handled and can result in complete or intermittent failures.
General observations
• C lean the case with a soft slightly moist anti-static cloth
• Place the unit on a flat surface and ensure free air circulation
• Avoid exposing the unit to direct sunlight and other heat sources
• Protect the unit from moisture, vapors, and corrosive liquid s
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 avail-
able, ground yourself by touching the metal part of the chassis.
CAUTION