BRIDGE Technologies - VB272 - 聯恩電子

在VB272输入卡提供卫星信号转发器里DVB-S/S2、QPSK/8/16/32 APSK信号的分析和监控。机器可配备一个VB120或VB220 Probe控制器和高达两个控制VB272输入卡。

图为一个1RU增强型机器与当作两个DVB 272 DVB-S/S2控制器共4个独立RF输入， VB120模组为输入模组。

一个完整授权VB120和两个VB272接口卡的配置完整提供了即时监控和告警多达四个DVB-S/S2射频输入端、10个IP MPTS/SPTS多播（可升级至50个）和一个ASI码流输入、输出。

DVB-S/S2输入、ASI输入和IP并行输入皆可进行完整ETSI TR 101 290分析，此外可加上VB120或VB220 Probe控制器。如果以VB220 Probe作为主卡进行IP监控可提高到260个MPTS/SPTS多播能力。

VB272的操作可通过一个Web浏览器，图形化的用户界面可提供扫描状态和ETR 290 TS数据的图形概述。其中IP用于作为从头端向卫星站台的载波混合网路。内置的循环功能允许多个DVB-S/S2多路复的连续分析，完全整合能够监控使用单一个VB272接口。

在VB272还搭配了RF输入的全功率/音调控制开关，也可以使用DiSEqC 1.1协议额外的开关控制。随着现代化技术支援调制类型为16或32 APSK，VB272是未来趋向。在VB272附带了标准75欧姆的F-连接器或者搭配VB272-SMA 50欧姆SMA连接器。

Hardware ready with two independent tuners and demodulators
One input activated by default - second input available through VB272-RF-OPT
Available with 50 ohm SMA female connectors (VB272-SMA) or 75 ohm F female connectors (VB272)
9-pin male D-SUB alarm relay
Capable of demodulating DVB-S, DVB-S2 8PSK, 16APSK, 32APSK
Supports DVB-S2 GOLD CODES, ROOT CODES and BOTH
Input frequency range from 950 to 2150 MHz; Automatic symbol rate detection requires only frequency to be configured by user
Symbol rate range between 1 to 45Msym/s
Input stream selection (for DVB-S2)
PL scrambling mode setting (for DVB-S2)
PL scrambling code setting (for DVB-S2)
DVB-S 1/2, 2/3, 3/4, 5/6, 7/8 FEC
DVB-S2 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 FEC
Configure LNB local oscillator frequency and set input satellite frequency directly
13V/18V/22kHz antenna signalling present
DiseqC 1.1 compatible for control of Committed L-band Switches
Modulation Error Rate (MER) in dB
Signal to Noise Rate (SNR) in dB
Error Vector Magnitude (EVM) in% and in dB
Constellation diagram maintained in GUI
BER pre Viterbi (for DVB-S)
BER post Viterbi (for DVB-S)
BER post LDPC-BCH (for DVB-S2)
RS Packet Error Count
Front-end lock indication in GUI and through front panel red/green LED
Channel power with an absolute accuracy of +/- 3 dB and a resolution of 1 dB
Trend graphs over time for Channel Power and MER up to 2 years - requires VideoBRIDGE

Carrier level
Carrier frequency offset
Symbol rate offset
Energy per information bit to noise power spectral density ratio (Ebinf/N0) in dB
Energy per transmitted bit to noise power spectral density ratio (Eb/N0) in dB
Energy per symbol to noise power spectral density ratio (Es/N0) in dB
Pilot detection (for DVB-S2)
Frame length (for DVB-S2)
Null packet deletion (for DVB-S2)
Input Stream Synchronization Indicator (ISSI) (for DVB-S2)
Number of input streams (for DVB-S2)
Capable of Short and Normal frames
Stream types: Generic Packetized Stream、Generic Continuous Stream、Transport

Roll-off factors: 0.35/0.25/0.20
Capable of Multi Input Stream (MIS) with tuning selection of individual Input Stream