User's Manual

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devices. Through Local port, the unit enables you to check and control device status through PC and laptop.
It provides three interface port with ARUs to communicate with these. It also provide dry contact port,
which is (1) output port and (1) input port.
Figure 9. AC-DC RPSU Outer Look
2.1.3.5 Multiplexer
Multiplexer it called combine unit(CU) works as a module to combine or distribute multiple signals
into one or two antennas.
This device has a port to combine multiple signals. You need to connect input and output ports of
RDU through a corresponding port.
Figure 10. Multiplexer Outer Look
2.1.3.6 System interface unit (SIU)
This unit connect with HRDU, R CPU, R Optic and RPSU. SIU distributes power and signals to
each module. Each unit need to connected to the correct slot of the SIU.