User's Manual

Earth Ground and P ower Cables Chapter 3: Cable Descriptions
Figure 3 -2 T ypical Indoor Grounding Diagr am
ti-cdma-04181.eps
DCPrimary Surge Arrestors
Secondary Surge Arrestor
AC & Backhaul Primary
Surge Arrestor
Bonded Ground / Earth
Connection
Conduit or
Shielded Cable
LPZ1
LPZ2 Secondary Protected Zone
LPZ0
A
LPZ0
B
Antenna Tower
45 Degree
IEC Recommended
Direct Strike
Protection Angle
RF
1
RF
2
RF
3
BCU
INSULATOR
Customer I/O
MASTER SINGLE
POINT STRUCTURE
GROUND
LPZ0
A
-- Possible direct strike zone
LPZ0
B
-- No direct strike, but
unattenuated electromagnetic field
present
LPZ1 Primary Protected Zone
LPZ2
LPZ
2
LPZ
2
LPZ
2
Single Point
Ground
AC Input
Backhaul
STRUCTURE
3 -8 68P09277A59 -8
PRELIMINARY - UNDER DEVELOPMENT MA Y 2007