Capacitive coupling
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Inductive coupling
Radiative coupling
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Common impedance coupling
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Conductive coupling
To prevent EMI, take the following actions:
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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 switch far away from radio transmitting stations, radar stations, and high-frequency
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devices to make sure the EMI levels do not exceed the compliant range.
Use electromagnetic shielding, for example, shielded interface cables, when necessary.
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To prevent signal ports from getting damaged by over-voltage or over-current caused by lightning
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strikes, only route interface cables indoors.
Laser safety
Do not stare into any fiber cables or ports when they are powered on. They emit invisible laser radiation
that might hurt your eyes.
Installation tools
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Flat-blade screwdriver
Phillips screwdriver
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ESD wrist strap
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All these installation tools are user supplied.
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