Comba Telecom Ltd. RS-5180 Manual De Usuario

 

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Comba Telecom 

Edition  

2.0 

Date

 

2001-06 

 

8 of 31 

 

divided by the master unit, they are transmitted to CDMA800 and CDMA1900 BTSs. 

2.2 System Features 

n 

CDMA800/1900 dual band indoor optical fiber distribution coverage.

 

n Since optical fiber is the transmission media, it overcomes the drawbacks of indoor RF 

routing difficulty and high loss. 

n Plug and play system structure and flexible volume configuration can satisfy different 

coverage requirements.   

n Coverage end unit is small in size. Wall-hanging structure makes it easy to install, 

flexible and concealed well, not affect indoor decoration and coverage area. 

n Applicable to the indoor signal coverage of large-scale office buildings, high-rise hotels, 

large-scale department stores, exhibition halls, undergr ound buildings, tunnels and 

airport.   

n It has complete alarm function to monitor system working status. Alarm signal can be 

sent to mobile network administration center through wire or wireless modem. 

2.3 System Functions 

2.3.1 Master Unit   

Master Unit (RS-5180-M) 

Main functions of the Master Unit include the level adjustment of the transmission and 

received signals of BTS and the distribution of Interface Units. Master Unit can adjust the 

CDMA800 uplink or CDMA1900 uplink RF signal level in the range of over 30dB for GSM 

with step of 2dB and over 25dB for 1800 with step of 1dB. The uplink attenuation adjustment 

dip switches are on the front panel. ALC function is to control the downlink signal level to 

ensure the normal operation of Master Unit with downlink input signal level in the range of 

+5dBm ~ +20dBm.