H3c-technologies H3C SecPath F1000-E Uživatelský manuál stáhnout pdf (Strana 17)

Figure 11 Airflow through the chassis (F1000-E)

ESD prevention

CAUTION:

• Check the resistance of the ESD-preventive wrist strap for safety. The resistance readin

should be in

the range of 1 to 10 megohm (Mohm) between human body and the ground.

• The firewall does not provide any ESD-preventive wrist strap. Prepare it yourself.

To prevent electrostatic discharge (ESD), follow these guidelines:

• Make sure the firewall 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 a circuit board,

interface module, or transceiver module.

• Place the removed power modules and interface modules on an anti-static workbench, with the

face upward, or put it into an anti-static bag.

• Touch only the edges, instead of electronic components when observing or moving a removed

interface module.

Make sure the rack is properly grounded before you wear an ESD-preventive wrist strap.

To attach 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. Attach the alligator clip to the chassis.

4. Make sure the wrist strap is properly grounded.

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H3c-technologies H3C SecPath F1000-E Uživatelský manuál Strana 17