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7-27
D-620003-0-20 Rev J
CONFIDENTIAL
Unison Component Installation Procedures
7.4.4
Installing a Dual-Band RAU Configuration
7.4.4.1
Using Dual-Band Diplexer
CAUTION:
Install RAUs and diplexers in indoor locations only. Do
not connect an antenna that is installed in an outdoor location.
Dual band RAU configuration consists of:
• 1 higher band RAU
• 1 lower band RAU
• 1 Dual-Band Diplexer (PN #DIPX1-1)
• 2 coaxial cables, 3 ft. long (PN #4005-3)
Installing RAUs in a Dual Band System
Use a Dual-Band Diplexer to combine the output of a low-band RAU and a
high-band RAU to a single dual band antenna.
Considerations:
• The Diplexer will have a high loss when it is connected incorrectly. When using it
with the Unison system, incorrect connections may trigger the Antenna Disconnect
alarm.
• When using the Dual-Band Diplexer, the Unison system Antenna Disconnect
alarm can detect if the cable is disconnected or cut
between the RAU and the
Diplexer
. This alarm, however, cannot detect it if the cable is disconnected or cut
between the Diplexer and the antenna.
Figure 7-5 shows the RAU configuration in a dual band system. It consists of two
RAUs, one for upper band and one for lower band, a diplexer and two 3 ft. coaxial
cables.
