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Earthing and transient protection
Earthing and transient protection
Site earthing
This part of the manual summarizes general procedures for earthing the site.
Refer to the Grounding guidelines for cellular radio installations 68P81150E62 ,
for detailed earthing information.
S
S
S
S
Secondary
transient and
lightning
protection
All E1/T1 lines connected to Motorola equipment have secondary transient
protection as part of the BIB or T43 board. Ensure the receive and transmit
antenna connections to the cabinet are fed through coaxial electromagnetic
protection (EMP) devices.
Inst. 3–16
WARNING
Each cabinet must be earthed separately. Cabinets must
not be daisy chained together.
The cell site equipment must be earthed (in the same common earth point
as its power source).
Provision should be made for earthing the site before beginning the
installation of the system cabinets. See Earthing the site in Chapter 2 of
this Category.
There is an earthing terminal (stud) located on the earth/connector plate
on the cable entry side of each BTS cabinet, and auxiliary equipment
housing.
Refer to the site-specific documentation for detailed site earthing
information.
CAUTION
The end–user is responsible for transient protection of the
E1/T1 lines connected to Motorola equipment.
Installation & Configuration: Horizon macro outdoor
68P02902W03-A
CONTROLLED INTRODUCTION
GSM-204-423
31st Oct 01
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