Comba Telecom Ltd. RS-5180 Manual De Usuario

 

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Comba Telecom 

Edition  

2.0 

Date

 

2001-06 

 

11 of 31 

 

Panel explanations: As shown in figure 2.3-3. 

RS-232 (BD9): standard RS232 port, used to connect notebook computer. Set and read 

parameters, status check. The accompany digital port is designed for using in set up 

only, not for daily operation and after set up no cable will be attached to this 

port.   

COMM (RJ45, 8-pin): communication unit port, used to connect communication unit to 

actualize remote monitor. The accompany digital port is designed for using in set up 

only, not for daily operation and after set up no cable will be attached to this 

port.   

BTS-ALARM (RJ45, 4-pin): BTS external alarm port, normal when the two pins in the middle 

is opened, alarm when the two pins in the middle contact with each other. (occasionally used 

only) 

ALARM (LED): overall alarm indication. When any Remote Unit (Interface Unit) being 

monitored has trouble, LED will turn to red, or it will be off. 

 

2.3.2 Remote Unit (RS-5180-R) 

Remote Unit receives the uplink signal from mobile handset in coverage area and amplifying it, 

then converts it into optical signal and transmit to Interface Unit. At downlink direction, it 

converts the optical signal sent from Interface Unit into RF signal and transmits it after 

amplifying the power. RF receiving and transmitting module in Remote Unit has 4 duplex ports 

to be connected with 4 antenna ports. Uplink and down link amplifiers have ALC function. 

When duplex receiving and transmitting amplifier has trouble, the alarm circuit will 

automatically turn the indicator off.