VB273
VB273 SATELLITE UPLINK REDUNDANCY SOLUTION
- IF and L-BAND
VB273 DVB-S/S2卫星讯号智能主备路自动切换系统,完整的VB273系统是由VB120控制器模组、VB272监控模组与VB273切换模组共同组成,并且安装在一RU机架上,基本上用于IF或L-Band讯号及监控标准(ETSI TR 101 290)。
VB273含有双路径的卫星信号通道,提供智能切换系统包含自主运行和深入信号分析以便最终切换决策。该解决方案是提供理想快速且强大的切换机制,为一个永久性安装于卫星站台链路或在户外广播系统的方案。
图为一个完整的VB273系统与VB120控制器,10/100/1000的技术管理接口,USB-RS232进行初始设置,VB272-SMA DVB-S/ S2与VB273交换机在1RU EC AC电源的机架,这种配置仅需要25W功率,相当省电。
图为在1RU增强型机器搭配一个VB120模组和两个VB252 DVB-T/T2输入模组,总共4个独立的RF输入。
除了监控典型的RF参数,还可任选复杂的DVB-T的MI协议中的高级数据;信号完整性是根据验证层。此外VB252还支持T2精简版标准加速器作全面分析,所有分析功能整合桥接技术与ETSI TR101290监控引擎,以确保符合标准。
在手动模式下的可以通过从基于广泛的XML的EII(外部集成接口)上层网管系统,或者通过SNMP触发控制。
在VB273还拥有独特super Local模式功能,在紧急状况下可透过手动控制面板按键切断网路控制,所有的参数都可以通过内置的Web界面进行控制。Web GUI中包含视觉化介面并且提供了在切换决策和系统状态使用的参数。
在VB120提供支援TS 101 290分析,除了可以用在VB242的两个主要ASI输入端口所需,也可用于临时监控ASI输入端口。
硬体的架构是符合电信级标准的,可达到最高的可靠度,完整的解决方案只需要25W消耗功率,相对的可以减少于安装时所消耗的功率,达到省电的效果。
技术特点
- 2:1 redundancy switching functionality based on built-in monitoring of incoming satellite signals
- Monitoring feature set of VB120 included making this a switch and a probe combined into one
- Supports 70/140MHz IF (VB273) and 950-2150MHz L-band (VB273-LBAND)
- IF signal inputs: 75 ohm female BNC; IF signal output: 75 ohm female BNC
- L-BAND signal inputs: 50 ohm female SMA ; L-BAND signal output: 50 ohm female SMA
- Three-stage button logic supporting 3 distinct modes: Manual, Auto, Super Local
- Robust bistable RF relays ensures state is preserved even in the event of a power loss
- Passive loop through so that signal is passed even if no power on unit
- Capable of receiving DVB-S/S2 QPSK, DVB-S2 8PSK, DVB-S2 16APSK, DVB-S2 32APSK
- Continuously monitor and switch on all TR 101 290 priority 1, 2 and 3 parameters (except Buffer Fill)
- Possibility to customise alarming and switching template on all parameters
- Independent alarm template and redundancy switching template to allow a parameter to be alarmed on while at the same time not resulting in a redundancy switch
- Filtering capabilities on switching criteria to prevent short glitches to trigger a redundancy switch
- Continuously monitor and switch on RF parameters:
- Channel power RF level
- Modulation Error Rate (MER) in dB
- Signal to Noise Rate (SNR) in dB
- Error Vector Magnitude (EVM) in% and in dB
- BER pre Viterbi (for DVB-S)
- BER post Viterbi (for DVB-S)
- BER post LDPC-BCH (for DVB-S2)
- RS Packet Error Count
- Carrier frequency offset
- Symbol rate offset - PID analysis, Service analysis, bandwidth overview, PSI/SI/PSIP table analysis
- Automatic or manual TS recording of up to 200MB for recording fault that triggered redundancy switch
- Thumbnail extraction with audio bars and meta data
- Configurable alarm severity level
- PSIP support (ATSCA/78)
- Exportable logs
- Management port: 10/100/1000-T; Video ports for RDP relay: 10/100/1000-T and SFP
- Condensed mosaic thumbnail view of all services monitored