H3C Technologies H3C MSR 2600 - Manual (Page 10)

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Figure 1 Airflow through the chassis
To ensure good ventilation, the following requirements must be met:
• The inlet and outlet air vents are not blocked, and leave at least 10 cm (3.94 in) of clearance.
• The installation site has a good cooling system.
ESD prevention
CAUTION:
Check the resistance of the ESD wrist strap for safety. The resistance reading should be in the range of 1
to 10 megohm (Mohm) between human body and the ground.
To prevent electrostatic discharge (ESD), follow these guidelines:
• Make sure the router and the floor are correctly grounded.
• Take dust-proof measures for the equipment room.
• Maintain the humidity and temperature at acceptable levels.
• Always wear an ESD wrist strap and ESD cloth when touching a circuit board or transceiver module.
The router does not supply an ESD wrist wrap. Prepare an ESD wrist wrap yourself.
• Place the removed 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 you observe or move a removed
interface module.
To attach an ESD 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 plug into the ESD socket.
4. Make sure the rack is correctly grounded.
EMI
Electromagnetic interference (EMI) might be coupled from the source to the router through the following
coupling mechanisms: