Installation And Alignment - Cisco BR1400 Deployment Manual

Stacked Bridge links
Figure 39.

7.1 Installation and Alignment

During the installation, please make sure that you provide sufficient isolation for both the redundant
links, by using different Polarization, or adding to the isolation by placing the two links more than 10
feet apart. RSSI voltage port may be used to help verify isolation.
Adjacent-channel interference analysis indicates that a system can tolerate a maximum input power
from an adjacent unit of –34 dBm maximum on a second-adjacent RF channel. This means that
with +24 dBm of output power, 58 dB of isolation is required between units to insure satisfactory
operation of each system. In other words separation "D" between antennas must be adjusted to
achieve this level of mutual coupling. Fortunately this is an achievable figure with the types of
antennas being used with the 1400 series system.
Mutual Coupling
Figure 40.
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