Installation Manual
Quidway S2000-EI Series Ethernet Switches Chapter 2 Installation Preparation
2-3
Gas Max. (mg/m
3
)
NH
3
0.05
Cl
2
0.01
2.2.3 Anti-interference Requirements
A switch in use may be affected by the interference sources outside the system in a
way of capacitance coupling, inductance coupling, radiation of electromagnetic wave,
common impedance (including the grounding system) or conducting line (power line,
signaling line and transmission line etc.). Therefore, the following should be
considered:
z If AC supply system is TN system, AC power socket should be a single-phase
three-line power socket with Protection Earth (PE). Thereby, the filter circuit in
the equipment can effectively filter interference from the power supply system.
z Keep the switch far away from radio launcher, radar launcher, and
high-frequency devices working in high currents.
z Adopt the measure of electromagnetic shielding if necessary. For example, you
can adopt shielded interface cable.
z Interface cable must be run indoors, and outdoor cabling is not permitted, in
case that overvoltage and overcurrent damage the device.
2.2.4 Laser Usage Security
In operating status, it is prohibited to stare into the open optical interface because the
laser being transmitted through the optical fiber will produces a small beam of light, it
has very high power density and is invisible to human eyes, when a beam of light
enters the eye, retina may be burned.
Caution:
Staring at the laser beam inside the fiber could hurt your eyes.
2.3 Installation Tools
z Phillips screwdriver
z Flat-blade screwdriver
z ESD-preventive wrist strap
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