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Tetra Fiber Optic BDA
The TETRA Fiber Optic BDA (Bi-directional Amplifier) is designed to solve problems of weak mobile signal in the place that is far away from the Base station (BS) and has fiber optic cable network underground. The system consists of two parts: Donor unit and Remote unit. The Donor unit captures the BS signal via direct coupler and closed to BS, 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 BS via the opposite direction. Features
- Aluminum-alloy casing the IP65 protection has high resistance to dust, water and corroding
- No interference to BS by adopting linear amplifier with high grain and low noise
- Adopting filter with highly selectivity and low insertion loss eliminates interference between uplink and downlink
- 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 BDA's working status and download operational parameters to the BDA.
- Omni-directional antenna can be adopted to expand more coverage
- Adopting WDM module to realize long-distance transmission
- Tx/Rx control and alarm messages can be transmitted via on fiber optic cable
- Stable and improved signal transmission quality
- One Donor unit can support up to 8 Remote Units to maximize utilization of fiber optic cable
Applications To expand signal coverage or enhance signal blind area where TETRA signal is weak or unavailable
- Public safety
- Transportation
- Utilities
- Government
- Military
- PAMR
- Commercial and Industry
- Oil and Gas
Technical Specifications
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Item
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Specifications
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Donor Unit
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Remote Unit
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Working Frequency
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Up link
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380~400 MHZ
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Down link
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410~430 MHZ
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Maximum Input power (Non-Destructive)
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10dBm
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Transmission Distance
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<20km
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Output Power
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40dBm/43dBm
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OIP3
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>60dBm
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Gain
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Cable access
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>65dBm
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Gain Adjustment Range
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1~31 dB @ step of 1 dB
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Voltage Standing wave ratio
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<1.5
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Noise figure
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<5dB (only for up link)
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In-band Ripple
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<3dB
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Spurious Emission
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With in working band
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<15dBm/30kHz
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Out of working band (f>2.5MHz)
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9 kHZ~1GHz: <-36dBm/30kHZ
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1 Ghz~12.75 GHz: <-30dBm/30kHZ
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In-band inter-modulation attenuation
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<-40 dBc/30kHZ(measured under rated output power)
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System delay
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<5 sec
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Phase Distortion across bandwidth
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<6.1o (RMS) and <24.5o (Peak)
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Error vector magnitude (EVM)
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<12.5%
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I/O Impedance
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50
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RF connector
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N-type (female)/Changeable/bottom of casing
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Fiber Optic Light source
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Laser unit (Wave length: 1310nm/1550nm)
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Optical output power
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>0dBm (1310nm)/>3dBm (1550nm)
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Optical Receiver sensitivity
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<25dBm
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Temperature Range
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Operation: 25oC ~+55oC/Storage: 30oC~+60oC
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Relative Humidity Range
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<95% (non-condensing)
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Relative supply (customized)
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DC+24V/AC 220V+15% or AC 110V+15%, 50Hz
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Power consumption
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<15W
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<180W
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Backup power supply (optional)
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4 hours
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Casing level
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IP 65
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Dimensions
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418mmx90mmx290mm
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610mmx445mmx215mm
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Weight
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6kg
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35kg
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NMS monitoring function
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Real time alarm for door status, temperature, power supply, LNA, VSWR, self-oscillation etc
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Remote control such as turn on/off, increasing/decreasing output power, changing channel frequency etc. Real time status for output/input power, UL/DL gain, all status of BDA etc.
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