Patton electronic SN5200 ユーザーズマニュアル

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SmartNode 5200 User Manual 
About This Guide
General Observations
Clean 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 liquids
Electrostatic Discharge (ESD) can damage equipment and impair electrical cir-
cuitry. It occurs when electronic printed circuit cards are improperly handled 
and can result in complete or intermittent 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 con-
tact. 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.