Emi Prevention; Grounding Requirements; Installation Tools And Meters - H3C WIRELESSACCESSCOTROLLER S7500E Installation Manual

Table 2-2 Limits on harmful gases in the equipment room
SO
2
H S
2
NH
3
Cl
2

EMI Prevention

All interference sources, from the outside or inside of the switch and application system, adversely
affect the access controller module in the conduction patterns of capacitance coupling, inductance
coupling, electromagnetic wave radiation, and common impedance (including grounding system)
coupling, and cable conduction (including power cables, signal cables and output cables). To prevent
interference, do the following:
Take effective measures against interference from the power grid.
Keep the protection ground (PGND) of the switch as far as possible from the grounding device or
lightning protection grounding device of the power supply equipment.
Keep the switch far away from high-power radio launchers, radars, and equipment with
high-frequency and high current.
Use electromagnetic shielding when necessary.

Grounding Requirements

A good grounding system is essential for lightning protection, interference prevention and ESD
prevention to ensure the stable and reliable operation of the switch and the access controller module.

Installation Tools and Meters

Table 2-3 List of installation tools and meters
Fastening tools
Special tools
Fiber cleaning tools
Meters
The installation tools and meters are not shipped with the LSQM1WCMB0.
Gas
Type
0.2
0.006
0.05
0.01
Phillips screwdrivers
ESD-preventive wrist strap
Airlaid paper, fiberscope
Multimeter, 500V Megohmmeter (for measuring
insulation resistance), earth resistance tester
2-3
3
Limit (mg/m )
Tools