User's Manual

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 Internal Configuration
 RFU (RF Unit)
The RFU (RF Unit) is a bi-directional amplifier that sharply filters out unwanted noise.
 Multiplexer
A Multiplexer is a device that combines two or more signals onto a common channel or medium
to increase its transmission efficiency.
 PSU (Power Supply Unit)
The AC-DC adaptor supplies a steady DC power to the APEX8930 equipment by drawing
power from the general in-wall AC outlets.
 NCU (Network Control Unit)
The NCU (Network Control Unit) is the control unit of the APEX8930. The NCU controls and
monitors operational parameters, alarms, records event and performs many other functions.