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Fiber Optic Repeater For Is Designed To Solve Problems Of Weak Mobile Signal.
Posted at: TradersCity --> Offers to Sell and Export
Posted on: Thu 14 Aug, 2008 9:42 am
The GSM/CDMA Fiber Optic Repeater (FOR) is designed to solve problems of weak mobile signal in the place that is far away from the Base Transceiver Station (BTS) and has fiber optic cable network underground.
The system consists of two parts: Donor Unit and Remote Unit. The Donor unit captures the BTS signal via direct coupler closed to BTS, then converts it into optic signal and transmits the amplified signal to the Remote Unit via fiber optic cable. The Remote unit will reconvert the optic signal into RF signal and provide the signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and retransmitted to the BTS via the opposite direction.
Features:
Aluminum-alloy casing with IP65 protection has high resistance to dust, water and corroding
Omni-directional antenna can be adopted to expand more coverage
Tx/Rx control and alarm messages can be transmitted via one fiber optic cable
Adopting WDM module to realize long-distance transmission
Stable and improved signal transmission quality
One Donor Unit can support up to 8 Remote Units to maximize utilization of fiber optic cable
RS-232 port provides a link to a notebook for local supervision or to the built-in wireless modem to communicate with the NMS (Network Management System) that can remotely supervise repeater’s working status and download operational parameters to the repeater
Application:
To expand signal coverage or fill signal blind area where signal is weak or unavailable.
Outdoor: Airports, tourism regions, golf courses, tunnels, factories, mining districts, villages, …
Indoor: Hotels, exhibition centers, basements, shopping malls, offices, parking lots, …
Technical Specification:
Items GSM FOR CDMA FOR
Working Frequency
(customized) Uplink 890~915MHz / 1710~1725MHz / 1850~1910MHz 450~457.5 MHz / 824~849 MHz / 1880~1890MHz
Downlink 935~960MHz / 1805~1820MHz / 1930~1990MHz 460~467.5 MHz / 869~894 MHz / 1960~1970MHz
Transmission Distance ≤ 20km
Max. Input Level +10dBm
Output Power 10W / 15W / 20W
Gain ≥ 65dB
Gain Adjustment Range 1~31 dB
Voltage Standing Wave Ratio < 1.5
Noise Figure < 5dB (only for uplink)
In-Band Ripple ≤ 3dB
Spurious Emission ≤ -36dBm
In-Band Inter-Modulation Attenuation ≤ -40dBc / 30kHz ≤ -15dBm / 30kHz
System Delay ≤ 5μSec
I/O Impedance 50Ω
Fiber Optic Light Source Laser unit (wavelength: 1310nm / 1550nm)
Optical Output Power ≥ 0dBm (1310nm) / ≥ 3dBm (1550nm)
Optical Receiver Sensitivity ≤ -25dBm
Temperature Range Operation: -25°C ~ + 55°C / Storage: -30°C ~ +60°C
Relative Humidity Range ≤ 95% (non condensing)
Power Supply (customized) DC +24V/ DC –48V / AC 220V±15%, 50Hz / AC 110V
Backup Power Supply (Optional) 4 hours
Dimensions Donor Unit : 418mm X 90mm X 290mm
Remote Unit: 630mm X 400mm X 230mm
Weight Donor Unit: 6kg / Remote Unit: 35kg
NMS Monitoring Function Real-time alarm for door status, temperature, power supply, etc.
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