User's Manual

Confidential&Proprietary54/115 SC‐DAS
(a)AC/DC(b)DC/DC
Figure4.37–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

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