Installation Instructions

Outdoor Grounding Guidelines Summary – continued
PRELIMINARY
SCt300 BTS Hardware Installation, ATP and FRU Procedures
DEC 2000
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MGP at the antenna access point. The signal (center) conductor must be
protected by a lightning arrestor. The lightning arrestor connects to the
MGP at the same point as the ground conductor (shield) of the antenna
cable.
Chassis
The ground stud of the BTS chassis connects to the MGP.
T1 Span Lines
The BTS can connect to two T1 span lines. For many applications the
T1 cable is derived from an optical fiber interconnect. For cases where
the optical interconnect is non–metallic, no special grounding is needed.
If the optical fiber is encased in a metallic sheath, the sheath must be
grounded to the MGP. If the span lines are metallic, the conductors must
be protected by lightning arrestors which connect to the MGP at a point
closest to the demarcation point.
Modem
A single tip and ring pair is used for a dial–up modem connection. The
tip and ring pair must be protected by a lightning arrestor which
connects to the MGP at a point closest to the demarcation point.
Customer I/O
The BTS provides eight customer defined inputs. These connections are
internal to the cell site and do not require special grounding unless they
originate from an area not protected by the MGP.
Example: Signal light in tower configuration
A