The building installation shall provide a means for connection to protective earth, and the equipment is to be
connected to that means.
Lightning Grounding
The lightning protection system of the facility is a separate system that consists of the lightning rod, down lead conductor
and the connector to the grounding system, which usually shares the power reference ground and yellow/green safety
cable ground. The lightning discharge ground is for the facility only, irrelevant to the equipment.
For lightning protection, see Appendix C.
EMC Grounding
The ground required for EMC design includes shielding ground, filter ground, noise and interference suppression, and
level reference. All the above constitute the comprehensive grounding requirements. The grounding resistance should be
less than 1
Ω
. Two grounding poles are reserved at the back, left and right sides respectively. The grounding poles are
pasted with conspicuous warning labels. For details, see Figure 1-3 and Figure 1-7.
EMI Consideration
Various interference sources, from either outside or inside the equipment or application system, affect the system in the
conductive ways such as capacitive coupling, inductive coupling, and electromagnetic radiation. There are two types of
electromagnetic interferences: radiated interference and conducted interference, depending on the type of the
propagation path. When the energy, often RF energy, from a component arrives at a sensitive component via the space,
the energy is known as radiated interference. The interference source can be both a part of the interfered system and a
completely electrically isolated unit. Conducted interference results from the electromagnetic wire or signal cable
connection between the source and the sensitive component, along the cable the interference conducts from one unit to
another. Conducted interference often affects the power supply of the equipment, but can be controlled by a filter.
Radiated interference may affect any signal path in the equipment, and is difficult to shield.
Effective measures should be taken for the power system to prevent the interference from the electric grid.
The working ground of the routers should be properly separated and kept as far as possible from the grounding
device of the power equipment or the anti-lightning grounding device.
Keep the equipment away from high-power radio transmitter, radar transmitting station, and high-frequency
large-current device.
Measures must be taken to isolate static electricity.
Precaution for Fiber Connection
Before connecting the fibers, you should ensure that the type of optical connector and the type of fibers match the type of
the optical interface used. Moreover, you should pay attention to the Tx and Rx directions of the fiber. The Tx end of this
equipment should be connected to the Rx end of the peer equipment, and the Rx end of this equipment to the Tx end of
the peer equipment.
Installation Tool
Common tools
Cross screwdriver, straight screwdriver, related electric and optical cables
Bolts, diagonal pliers, straps
Special-purpose tools
Anti-static tool, anti-static glove, stripping pliers, crimping pliers, crimping pliers for the
crystal head, wire cutter
Fiber optic cleaning tools
Air-laid paper, fiber end microscope
Meter Multimeter,
Errormeter, Optic-power meter
RG-S12000 series is not shipped with a tool kit but a cross screwdriver. You need to prepare a tool kit by
yourself.
