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Variable Bandwidth Band Selective Device
Product Features：
High reliability, high stability.
Adopts advanced digital PLL and TCXO or OCXO technology, has good phase noise and the frequencystability of high precision.
Adopts advanced intermediate frequency SAW filter technology, selectivity is particularly good, can effectively inhibit the signal filtered out of band.
Fault detection
Center frequency and band setting are simple.
Frequency offset temperature compensated, gain temperature compensated
Have various monitoring interfaces, I2C/UART/RS485/RS232 or according to the client requirements
Overall product series and perfect power grade to satisfy different system requirements
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Description:
Band Selective Devicealso known as Frequency Selective Device, achieves the selection of communication band, make the repeater amplify the signal within needed band availably.
Series:
Our products, covering from Bandwidth fixed single band selective device, Bandwidth fixed dual band selective device, Bandwidth adjustable single band selective device, and Bandwidth adjustable dual band selective device. Including common communication 2G frequency(CDMA450, CDMA800, CDMA1900, GSM, EGSM, GSM1800, GSM1900, DCS, PCS, WLAN), 3G frequency(WCDMA, UMTS, CDMA2000), Trunking Communication(TETRA, iDEN, GoTa, GT800, 350Mhz Police Communication), Digital TV Communication(CMMB, DVB-H, T-DMB, S-DMB), Railway Communication System(450MHz Radio Train Dispatch Communication Series, GSM-R Series), Military Communication, FM Broadcast Communication, Interphone Communication, Marine Communication, Sea Area Coverage Systems, etc.
Technical parameters:
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Maximum output power（dBm）
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-10~0
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Gain adjustment range（dB）
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≥25
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VSWR
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≤1.3
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Power requirement
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DC+9V~+27V
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Monitoring
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Frequency setting, lose lock indication, fault alarm, etc.
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Work temperature
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-40～+55
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Average faultless working time (H)
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50000
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Typical Applic |
