User's Manual

Confidential&Proprietary52/122 SC‐DAS
Figure4.35–PSUataglance
3)RemoteOptic(R‐OPT)
The Remote Optic performs the optical to RF signal conversion as well as the RF to optical
conversion.WithanFSKmodeminit,theunitcommunicateswiththeotherdevices.
ItalsohasaninternalATTtocompensateforopticalcableloss.TheopticalwavelengthforTXpathis
1310nmand 1550nm for the RX path. It is transported by a fiber strand using WDM(Wavelength
DivisionMultiplexing)technique
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4)RemoteCentralProcessorUnit(RCPU)
The RCPU can monitor and control the RU. This unit receives and analyzes upper communication
datafromRemoteOpticandreportstheunit'sownvaluetotheupperdevices.Atthebottomofthe
module, it has an LED indicator to show system status, letting you check any fault conditions. The
same panel also has communication LED Indicators to show communication status with upper
devices.ThroughtheUSBPort,theunitenablesyoutocheckandcontroldevicestatusthroughaPC
or laptop. This equipment is for indoor use only and all the communication wirings are limited to
indooruseaswell.TheRCPUoftheMRUhavetwoportstoconnectexteranldevices(theARUand
the VHF&UHF ARU). Using an external interface cable, the MRU can communicate with the
ARU/VHF&UHFARU.
The MRU collects status information from ARU/VHF&UHF ARU and then communicates with the
upperdevice