User's Manual

JUNI JF43-E1900/CFN03
CDMA FIBER FED REPEATER OPERATIONS MANUAL
Version 1.17 ⓒ J
uni America Inc. Page 14 of 88
2.2.1 Donor Hub Unit Enclosure and Shelf
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[Figure 2.2] Main Components of the Donor Hub Unit
① FAN: Provides ventilation and disperses heat evenly.
② MCU (Master Control Unit): Monitors and controls each internal module. Also
monitors and controls the RU by data communication. Monitoring the control
and status of all repeaters can only be managed at an administrative level via
the internal SNMP agent.
③ DOC (Donor Optic Cavity): Converts the RF signal (from the BTS) into an
optical signal and transmits the signal to the RU. Conversely, the RU converts
the optic signal and transmits it to the BTS.
④ PSU (Power Supply Unit): Converts the input power AC power (115 or 230VAC)
into DC+27V, DC+15V, DC +7V and supplies the power to the modules.