5
Installation site examination
The installation environment for the access controller module must meet the
temperature and humidity, and cleanness requirements described in the
H3C
LSQM1WCMB0 Access Controller Module Installation Guide
.
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:
Take effective measures against interference from the power grid.
Keep the protection ground (PGND) of the switch as far away 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
When installing the access controller module, you may need the tools listed in
These installation tools and meters are not shipped with the LSQM1WCMB0.
Table 1
List of installation tools and meters
Type
Tools
Fastening tools
Phillips screwdrivers
Special tools
ESD-preventive wrist strap
Fiber cleaning tools
Airlaid paper, fiberscope
Meters
Multimeter, 500V Megohmmeter (for
measuring insulation resistance), earth
resistance tester
