User's Manual

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3) Remote Optic(R OPTIC)
Remote Optic converts optical signals into RF signals and performs vice versa. With an FSK
modem in it, the unit communicates with upper devices.
It also has internal ATT for optical compensation to compensate for optical cable loss. It
provides three path in pair to transport RF signal to ARUs
Figure 4.7 – R OPTIC Outer Look
4) Remote Central Processor Unit (RCPU)
RCPU can monitor and control each module of HROU. This unit receives and analyzes upper
communication data from Remote Optic and reports the unit's own value to upper devices. At
the front of the module, it has LED indicator to show system status, letting you check any
abnormalities at a time. At the same front, it also has communication LED Indicators to show
communication status with upper devices. Through RS-232C Serial 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. RCPU is common module
for both HMRU and HARU.
Figure 4.8 – RCPU Outer Look