4
Cooling
•
Maintain a minimum clearance of 100 mm (3.94 in) around the air vents.
•
Make sure the installation site has a good ventilation system.
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the router and application
system, adversely affect the router in the following ways:
•
A conduction pattern of capacitance coupling.
•
Inductance coupling.
•
Electromagnetic wave radiation.
•
Common impedance (including the grounding system) coupling.
To prevent EMI, perform the following tasks:
•
If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE)
to filter interference from the power grid.
•
Keep the router far away from radio transmitting stations, radar stations, and high-frequency
devices.
•
Use electromagnetic shielding, for example, shielded interface cables, when necessary.
Lightning protection
To protect the router from lightning, follow these guidelines:
•
Make sure the router is reliably grounded by using a grounding cable.
•
Make sure the power receptacle is reliably grounded.
•
Install a lightning protector at each power input end.
