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Chapter 2 Hardware Installation
2.1 Installation Notice
To ensure the proper operation of DCS-3950 series and your physical security, please
read carefully the following installation guide.
2.1.1 Environmental Requirements
The switch must be installed in a clean area. Otherwise, the switch may be damaged
by electrostatic adherence.
Maintain the temperature within 0 to 50 °C and the humidity within 5% to 95%,
non-condensing.
The switch must be put in a dry and cool place. Leave sufficient spacing around the
switch for good air circulation.
The switch must work in the right range of power input AC power: 100 ~ 240VAC
（50 ~ 60Hz）.
The switch must be well grounded in order to avoid ESD damage and physical injury
of people.
The switch should avoid sunlight perpendicular incidence. Keep the switch away from
heat sources and strong electromagnetic interference sources.
The switch must be mounted to a standard 19'' rack or placed on a clean level
desktop.
2.1.1.1 Dust and Particles
Dust is harmful to the safe operation of DCS-3950 series. Dust can lead to
electrostatic adherence, especially likely under low relative humidity, causing poor contact
of metal connectors or contacts. Electrostatic adherence will result in not only reduced
product lifespan, but also increased chance of communication failures. The recommended
value for dust content and particle diameter in the site is shown below:
Max Diameter (µm)
Max Density
(particles/m³)
In addition, salt, acid and sulfide in the air are also harmful to the switch. Such harmful
gases will aggravate metal corrosion and the aging of some parts. The site should avoid
harmful gases, such as SO
DCS-3950 series Ethernet switch manual
0.5
7
1.4×10
Table 2-1 Environmental Requirements: Dust
, H
S, NO
, NH
2
2
2
1
5
7×10
2.4×10
and Cl
, etc. The table below details the
3
2
3
5
5
5
1.3×10
10
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