Huawei XMC-1 ODU Manual page 17

RTN XMC ODU
Hardware Description
1.5 Installation Mode
The ODU can be installed on the antenna in two modes: direct mounting mode and separate
mounting mode.
Direct Mounting Mode
When the small-diameter and single-polarized antenna is used, the direct mounting mode is
usually adopted. In this case, if one ODU uses one antenna, the ODU should be installed at the
back of the antenna. If two ODUs share one antenna, one RF signal combiner-divider (hereinafter
referred to as hybrid coupler) should be added between the antenna and the ODU.
Use a hybrid coupler adaptive to the XMC ODU if two ODUs are configured with only one antenna installed
in direct-mounting mode.
Figure 1-4
Figure 1-4 Direct mounting mode
Separate Mounting Mode
When the dual-polarized antenna or the large-diameter and single-polarized antenna is used, the
separate mounting mode is adopted. In this case, two ODUs can share one feed boom by adding
a hybrid coupler.
In separate mounting mode, the ODU separated mounting bracket is used to fix the ODU or
hybrid coupler on the pole. The ODU or hybrid coupler and the antenna are connected through
a flexible wave guide.
Figure 1-5
Issue Draft C (2014-06-20)
NOTE
shows the direct mounting mode.
shows the separate mounting mode using a single-polarized antenna.
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1 Outdoor Unit (ODU)
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