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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 switch 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 device from lightning, follow these guidelines:
Make sure the chassis is reliably grounded by using the grounding cable.
•
Make sure the grounding terminal of the AC power receptacle is reliably grounded.
•
•
Install a lightning protector at the power input end.
Installation accessories
Power cable
(provided)
Pre-installation checklist
Table 4 Pre-installation checklist
Item
Installation
site
Power adapter
(provided)
Requirements
•
Ventilation
•
Temperature
0°C to 40°C (32°F to 104°F)
Relative humidity
5% to 95% (noncondensing)
•
Cleanness
•
Grounding
Rubber feet
terminal
(provided)
(provided)
There is a minimum of 10 cm (3.9 in) of clearance
around the device.
A ventilation system is available at the installation site.
Dust concentration ≤ 3 × 10
No dust on desk within three days
4
Grounding
Console cable
cable
(provided)
(user-supplied)
4
particles/m
3
Result
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