Set The Downtilt - Cisco BWX 8305 Installation And Commissioning Manual

Chapter 6 Installation

6.3.6 Set the Downtilt

Based on coverage objectives determined by previous RF planning, the BWX 8305 Basestation Antenna
may need adjusting upward or downward once mounted on the pole, tower, roof, building, or other
structure. The panel antenna has a -6° built-in electrical downtilt.
You will use an inclinometer to read the mounted position and to determine what adjustments, if any,
need to be made. For example, if the inclinometer reads +2° (uptilt) and you are mounting a panel BWX
8305 Basestation Antenna, the resulting beam has a –4° downtilt
adjusted per the assembly shown in
Figure 6-14
OL-16336-02
Figure
Downtilt Adjustment Example
BWX 2305 Basestation Installation and Commissioning Guide
BWX 8305 Basestation Antenna Installation
(Figure
6-15.
The inclinometer reads +1° (uptilt)
The panel antena has a
electrical downtilt
The resulting beam has a –5° downtilt
6-14). The downtilt can be
Electrical –6° Electrical –6° Electrical –6°
6° built in
–
6-13