H3C Technologies H3C SecPath U200-A U200-M U200-S - Manual (Page 18)

9
ESD prevention
CAUTION:
•
Check the resistance of the ESD-preventive wrist strap for safety. The resistance reading should be in
the range of 1 to 10 megohm (Mohm) between human body and the ground.
• The UTM device does not provide any ESD-preventive wrist strap. Prepare it yourself.
To prevent electrostatic discharge (ESD), follow these guidelines:
• Make sure the UTM device and rack are properly grounded.
• An anti-static floor is installed and properly grounded.
• Maintain the humidity and temperature at a proper level in the equipment room. For more
information, see "
Temperature and humidity ."
• Always wear an ESD-preventive wrist strap and ESD-preventive cloth when touching an interface
module or transceiver module.
• Place the removed CF card or interface module on an antistatic workbench, with the face upward,
or put it into an antistatic bag.
• Touch only the edges, instead of electronic components when observing or moving a removed CF
card or interface module.
Make sure the rack is properly grounded before you wear an ESD-preventive wrist strap.
To use the ESD-preventive wrist strap:
1. Wear the wrist strap on your wrist.
2. Lock the wrist strap tight around your wrist to keep good contact with the skin.
3. Insert the ESD-preventive plug into the ESD-preventive socket in the chassis.
4. Attach the alligator to the chassis.