4
•
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 better protect the MSR1000 router from lightning, perform the following tasks:
•
Make sure the grounding cable of the chassis is reliably grounded.
•
Make sure the grounding terminal of the AC power receptacle is reliably grounded.
•
Install a lightning arrester at the input end of the power supply to enhance the lightning
protection capability of the power supply.
•
Install a special lightning arrester at the input end of outdoor signal lines (for example, E1/T1
line) to which interface modules of the router are connected to enhance the lightning protection
capability.
Rack-mounting
Before mounting the router in a rack, make sure the following requirements are met:
•
The rack has a good ventilation system.
•
The rack is sturdy enough to support the router and its accessories.
•
The rack has enough space to accommodate the router.
•
The front and rear of the rack are at least 0.8 m (2.62 ft) away from walls or other devices.
Leave enough clearance on both sides of the rack.
•
The height of the equipment room is no less than 3 m (9.84 ft).
Installation accessories
Load-bearing screw (provided)
Cage nut (user supplied)
Grounding cable (provided)
Rubber feet (provided)
M6 screw (user supplied)
Mounting brackets (provided)
M4 screw (provided)
