Emi - Ruijie RG-AP680 Hardware Installation And Reference Manual

Hardware Installation and Reference Guide
Installation
Figure 2-1 Dust Cap
Connect the network cable, optical fiber jumper, and DC power cord to the AP after they
pass through the corresponding waterproof plugs to ensure waterproof. For details, see
3.4 Installing the Access
2.2.4

EMI

All interference sources (from outside or inside of the device or application system) affect
the device by capacitive coupling, inductive coupling, or electromagnetic waves.
Electromagnetic interference (EMI) occurs due to electromagnetic radiation or
conduction, depending on the transmission path.
Radiation interference occurs when energy (usually radio frequency energy) is emitted
from a device and propagated through space to disrupt other devices. The interference
source can be part of disrupted system or a fully electrically isolated unit. Conduction
interference occurs when interference is transferred from one unit to another through
cables, which are usually electromagnetic wires or signal cables connected between the
source and the devices experiencing interference. Conduction interference often affects
the power supply of the device. It is eliminated by using filters. Radiation interference
can influence the path of any signal from the device and is difficult to shield.
Take effective measures against interference from the power grid.

Keep the AP far away from the grounding or lightning protection devices for power

equipment.
Keep the AP away from high-power radio stations, radar stations, and high-frequency

high-current devices.
Take electrostatic shielding measures.

Point.
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Preparing for