6RA2325-6DV61-0
6RA2325-6DV61-0
6RA2325-6DV61-0
6RA2325-6DV61-0
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〖厦门光沃自动化设备有限公司 竭诚为您服务〗
〖联系人:欧先生 〗
〖手机:18030229053(微信同号) 〗
〖QQ: 2479261344 〗
〖传真:0592-5709825
【价格】如此低价,仅此一家
【货期】大量现货,下单后即可发货
【质量】全新原装,进口***
【保障】产品经过专业检测,质保一年,15天包退换
【品牌】Allen-Bradley罗克韦尔、ABB、本特利Bently 3500系统卡件、GE、艾默生西屋等模块卡件
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用户容量是专用无线数据网络的重要指标。无线数据网络的用户规模是由无线电台的数据速率、收发转换时间和传输的信息量决定的。为满足大容量的要求,专用无线数据网络必须提供高的数据速率,19200bps以上,并提供高速的收发转换。
目前的专用无线数据网络设备基本上都是采用常规调频电台加MODEM的方式实现的。电台工作于230MHz、800MHz数传业务频段和350MHz、800MHz集群业务频段。在25KHz信道,数据速率基本上是1200bps、2400bps,一些电台采用GMSK等MODEM芯片把输出的低频信号直接加到VCO输入端能实现9600bps的无线数据传输,但该方式的射频指标,难于满足信息产业部规定要求,且其10E-6误码灵敏度很低,通信距离非常近,实际当中无法使用。另外,常规调频电台的收发转换时间在50-100ms左右,不能实现高速收发转换。
美国MDS公司采用DSP、前向纠错编码、软件无线电、数字调制,相干解调, Virterbi译码,均衡软判决和表面贴片一体化设计等技术,提供高性能、高可靠,高稳定的无线电台。电台提供标准232接口可直接与计算机、GPS接收机控制板连接。25Khz信道间隔空中数据传输速率为19200bps,10-6误码灵敏度-111dBm,收发转换时间在7ms以内,电台其它指标亦符合信息产业部的要求。
假设每个用户终端需要传输50字节的信息,采用MDS电台只需要分配:
50×10÷19200+7=33ms的时隙给每个电台。
同样情况,采用调频电台加MODEM,一般为2400bps,方式则需要分配:
50×10÷2400+50=258ms的时隙。二种情况用户容量相差约8倍。如果要求GPS系统每秒钟更新一次信息,采用调频电台加MODEM方式容纳不了4个用户,而采用MDS电台可容纳30个用户。
我们在上海市中心,目前国内高楼最密集城区做过实验。同样的环境下,用其他公司提供的调频加9600bpsMODEM方式的数传电台只通不到2公里(BER小于10-6),而MDS电台可以覆盖约15公里半径。
246B2323AAG02 EXCITATION
246B2357BAG03 EXCITATION
323A2374P2 DISPLAY TERMINAL
323A2374P3 DISPLAY TERMINAL
531X301DCCAFG2 MAIN DRIVE CONTROL DCCA
531X301DCCAGG2 MAIN DRIVE CONTROL
531X305NTBAPG1 ACDC2000 TERMINAL BO
531X306LCCBCG3 LAN COM. CARD LCCB
531X307LTBAKG1 CARD I/O TB
DS200AAHAG2A ARCNET ACT HUB LAN DRVR
DS200AAHAH1A ARCNET-ACT HUB LAN DRVR
DS200AAHAH2A ARCNET ACT HUB LAN DRVR
DS200ACNAG1A ARCNET CARD
DS200ADGIH1A AUX DC2K GEN INTR/CO
DS200ADMAH1A ANALOG TO DIG.MODU : REV. AB
DS200ADPAG1A GENIUS ADAPT CARD
DS200ADPBG1A GENIUS ADAPTER
DS200CDBAG1B CONTACTOR DRIVER
DS200CPCAG1A CONTACTOR PILOT CARD
DS200CTBAG1A TERM. BD (C)
DS200CTBDG1A TERM. BD. RELAY SOLENOID
DS200DACAG1A TC2000 AC/DC CONV. B
DS200DCCAG4 DRIVE CONTROL CARD
DS200DCFBG1B DC POWER AND FEEDBACK
DS200DCPAG1A CONTROL PROCESSOR AU
DS200DCVAG1A DC POWER & INSTRUMENT
DS200DCVAG2A DC POWER & INSTRUMENT
DS200DDTBG2A LCI ADMA TERMINAL BOARD
DS200DENCF1 EE PROM W/FW
DS200DENQF1 EE PROM W/FW
DS200DMCAG1A GEN/L0G/KEY/INTRFACE
DS200DMCBG1A DOS DUP PROCESSOR
DS200DPCAG1A POWER CONNECT CARD
DS200DPCBG1A IOS+ POWER CONNECT C
DS200DSFBG2A DRIVER/SHUNT FEEDBAC
DS200DSPCH1A LCI CARD
DS200DTBAG1A TERM. DIGITAL CONT. IN
DS200DTBAG1B TERM. BD DIGITAL CON DTBA
DS200DTBBG1A TERM. BD DIGITAL CONT
DS200DTBCG1A TERM. BD RLY/SOLENOI
DS200DTBDG1A TERM. BD RLY SOLENOID
DS200EVIAG1B PICKUP INTERFACE BOARD
DS200EXDEG1A DE-EXCITATION CONTROL
DS200EXPSG1A POWER SUPPLY CARD
DS200FCGDH1A DSP DRIVE CONTROL, FOR LCI
DS200FCGDH1B DSP DRIVE CONTROL, FOR LCI
DS200FCRLG1A FIRING CIRCUIT REPL.
DS200FCRRG1A FIRING CIRCUIT REPL.
DS200FCRRG2A FIRING CIRCUIT REPL.
DS200FCSAG1A CURRENT SENSING INTE
DS200FCSAG2A CURRENT SENSING INTERFACE
DS200FECBG1A FIELD EXCITER CROWBA
DS200FGPAG1A LCI GATE PULSE AMPLIER
DS200FHVAG1A HIGH VOLTAGE GATE INTERFACE
DS200FHVAG1P HIGH VOLTAGE GATE IN
DS200FPSAG1A FAN POWER SUPPLY
DS200FSAAG1A FIELD SUPPLY AMPLIFIER
DS200FSAAG2A FIELD SUPPLY AMPLIFIER
DS200GDPAG1A 25KHZ GATE DRIVER PO
DS200GGDAG1A GTO GATEDRIVER BOARD
DS200GGIAG1B AC2000 GTO BRIDGE INTERF
DS200GGXCG1A AC2000 REGEN DISTRIB
DS200GLAAG1A GATE LEAD ADAPTOR CA
DS200GSIAG1B COMMON DC BUS REGEN
DS200GSIAG1C COMMON DC BUS REGEN
DS200GSNAG1A GTO SNUBBER BOARD
DS200IAXSG1A IGBT AA/AB SNUBBER C
DS200IIBDG1A AC2000I IGBT DRIVER
DS200IMCPG1C AC2000I PS/INT CARD
DS200IPCDG2A IGBT AP DB SNUBBER C
DS200IPCSG1A IGBT P3 SNUBBER CARD
DS200IPCSG2A IGBT P3 SNUBBER CARD
DS200IQXSG1A INVERTER SNUBBER CARD
DS200ISCAG1A STARTER CONTROL BOARD
DS200ITXDG1A IGBT Q DB SNUBBER CARD
DS200ITXSG1A INVERTER SNUBBER CARD
DS200KLDAG1A KEY/LED/DISPLAY CARD
DS200KLDBG1A KEY/LED/DISPLAY
DS200KLDCG1A KEY/LED/DISPLAY CARD
DS200LDCCH1A DRIVE LAN/CTRL CD/CC
DS200LPPAG1A LINE PROTECTION CARD
DS200LRPAG1A LINE PROTECTION CARD
DS200LRPBG1A RESOLVER CARD
DS200MBHAG1A MULTI-BRDG COM LINK
DS200NATOG2A NEXT GENERATION LCI ATTE
DS200NATOG3A NEXT GENERATION LCI ATTE
DS200PANAH1A MODULE
DS200PCCAG10A POWER CONNECT CARD
DS200PCCAG1A DC2000 PWR CONN
DS200PCCAG2A DC2000 PWR CONN
DS200PCCAG3A DC2000 PWR CONN
DS200PCCAG5A DC2000 PWR CONN
DS200PCCAG6A DC2000 PWR CONN
DS200PCCAG7A POWER CONNECT CARD
DS200PCCAG8A POWER CONNECT CARD
DS200PCCAG9A POWER CONNECT CARD
DS200PLFMG1A PHASE LOGIC FAULT MO
DS200PLIBG2A PHASE LOGIC INTERFAC
DS200PTBAG1A TERM. BD. (P)
DS200PTBAG1B TERMINATION BD. MODULE PTBA
DS200PTCTG1A SIGNAL CONDITIONER
DS200PTCTG1B SIGNAL CONDITIONER
DS200PTCTG2B SIGNAL CONDITIONER
DS200QTBAG1A TERM. BOARD (R-S-T)
DS200QTBAG2A TERM. BOARD (R-S-T)
DS200RTBAG1A RELAY TERMINAL BOARD
DS200RTBAG2A RELAY TERMINAL BOARD
DS200RTBAG3A RELAY CARD
DS200RTBAG4A CARD RELAY
DS200RTBAG5A RELAY CARD
DS200SBCAG1A STATIC BRAKE CARD
DS200SBCBG1A BRAKE CONTROL CARD
DS200SDCCG1A DRIVE CONTROL CARD
DS200SDCCG2A DRIVE CONTROL CARD SDCC
DS200SDCCG3A DRIVE CONTROL CARD
DS200SDCCG4A DRIVE CONTROL CARD
DS200SDCCG5A DRIVE CONTROL CARD
DS200SDCIG1A DS200 0 PWR SUPPLY/IN
DS200SDCIG2A DS200 0 PWR SUPPLY/IN
DS200SHCAG1B CARD SHUNT CONNECT
DS200SHCBG1A 65A SHUNT CONNECT CA
DS200SHVIG1A DC2000 SCR BRIDGE I/
DS200SHVMG1A SCR HIGH VOLTAGE CARD
DS200SIOBH1A VME STAND I/O CARD/C
DS200SIOCG1A INSTANTANEOUS OVERCU
DS200SLCCG1A PROGRAMMER/LAN INTER
DS200SLCCG2A LAN COMM CARD SLCC
DS200SLCCG3A LAN COMM CARD SLCC
DS200SLCCG4A LAN COMM CARD SLCC
DS200SNPAH1A LCI CARD
DS200SPCBG1A MULTIBRIDGE SIG PROC
DS200SSBAG1A DC300/2000 SNUBBER CARD
DS200SSBAG1B DC300/2000 SNUBBER CARD
DS200SSBBG1A DC300/DC2000 MOV CARD
DS200SSRAG1A SOLID STATE RELAY CARD
DS200STBAG1A ACDC2000 TERMINAL BOARD
DS200STCAG1A TURBINE COMMUNICATION
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