4
•
Maintain the humidity and temperature in the equipment room in the acceptable range.
•
Always wear an ESD wrist strap and ESD garment when touching a circuit board or transceiver
module.
The device does not provide an ESD wrist strap, prepare it yourself.
•
Place the removed interface module on an antistatic workbench with the circuit board upward,
or put it in an antistatic bag.
•
Touch only the edges instead of electronic components on the circuit board 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 maintain good contact with the skin.
3.
Secure the wrist strap lock and the alligator clip lock together.
4.
Attach the alligator clip to the grounding screw on the device.
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the device and application
system, adversely affect the device 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, use the following guidelines:
•
Take effective measures to filter interference from the power grid.
•
Keep the protection ground of the device away from the grounding facility of power equipment
or lightning protection grounding facility.
•
Keep the device 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 enhance lightning protection for the device, follow these guidelines:
•
Make sure the device is reliably grounded.
•
Make sure the AC power outlet is reliably grounded.
•
Install a lightning protector at the power input end.
•
Install a lighting protector at the input end of signal cables routed from outdoors.
Rack requirements
To install the device in a rack, make sure the rack meets the following requirements:
•
The rack has a good ventilation system.
•
The rack is sturdy and can support the device and its accessories.
•
The rack has a size that can accommodate the device.
•
Enough clearances are reserved at the two sides of the device for heat dissipation.
