1746-IM8

1746-IM8

1746-IM8

針對(duì)上層網(wǎng)絡(luò)模塊的冗余，當(dāng)今的工業(yè)自動(dòng)化領(lǐng)域出現(xiàn)了各種各樣的支持鏈路冗余功能的工業(yè)以太網(wǎng)交換機(jī)，它們解決了由節(jié)點(diǎn)故障導(dǎo)致網(wǎng)絡(luò)癱瘓的問題。為提高數(shù)據(jù)通信的整體可靠性和容錯(cuò)性，本DCS控制系統(tǒng)也采用環(huán)形的網(wǎng)絡(luò)拓補(bǔ)結(jié)構(gòu)。但是由于環(huán)形網(wǎng)本身固有的缺點(diǎn)是節(jié)點(diǎn)故障引起全網(wǎng)故障，因此數(shù)據(jù)通信鏈路的冗余技術(shù)應(yīng)運(yùn)而生。為了保證2層網(wǎng)絡(luò)的順利工作，2個(gè)網(wǎng)絡(luò)都采用1∶1的冗余設(shè)置。分布處理單元檢測(cè)到主網(wǎng)出現(xiàn)故障時(shí)，自動(dòng)放棄從主網(wǎng)的端口通信，同時(shí)啟用冗余網(wǎng)的端口，將數(shù)據(jù)轉(zhuǎn)由冗余網(wǎng)發(fā)送 和接受。此時(shí)冗余網(wǎng)進(jìn)入數(shù)據(jù)通信狀態(tài)，主網(wǎng)及時(shí)進(jìn)行修補(bǔ)。雙環(huán)網(wǎng)技術(shù)實(shí)現(xiàn)了傳輸媒介的冗余，在TurboRing的基礎(chǔ)上進(jìn)一步提高了系統(tǒng)的可靠性。但雙環(huán)網(wǎng)的管理和切換都比較復(fù)雜，本系統(tǒng)采用了一種簡(jiǎn)單的方法。

現(xiàn)貨，現(xiàn)貨，降降降，火火火，火火火……

現(xiàn)貨，現(xiàn)貨，降降降，火火火，火火火……

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◆ 企業(yè)名稱：廈門泰尼電氣有限公司

◆ 聯(lián)系人： 小廖（女士）

◆ 電話：0592-6539066
   
◆ 手機(jī)：18965113601 

◆ 傳真：0592-6890859

◆ QQ:1490371370

誠(chéng)信經(jīng)營(yíng)，質(zhì)量為首，服務(wù)至上，廈門泰尼小廖竭誠(chéng)為您服務(wù)?。?！

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Keithley 238 High Current Source Measure Unit
 

Keithley 236 Source Measurement Unit
 

LeCroy WaveRunner Model LT344L Digital Oscilloscope: 50


Agilent / HP 85070A Dielectric Probe Kit, 20 GHz


Krohn-Hite 3988 Butterworth / Bessel Programmable Filte


Agilent / HP N1922A Peak Power Sensor, 50 MHz - 40 GHz,


LeCroy AP015 Current Probe, 50 MHz, 30A


Agilent / HP 85033D Calibration Kit, 3.5mm
 

Agilent / HP 85134F Flexible Cable Set, M0F - Both cabl


Agilent / HP 8644B Signal Generator, 252 kHz - 1030 MHz


Agilent / HP 8757C Network Analyzer, 110 GHz, Scalar


Agilent / HP 8648C Signal Generator, 9 kHz - 3.2 GHz + 


Agilent / HP N4002A Noise Source, SNS Series, 10 MHz to


Gigatronics 80353A Peak Power Sensor, 45 MHz - 26.5 GHz


Agilent / HP 87511A S-Parameter Test Set, 100 kHz to 50


Keithley 6220 DC Precision Current Source + GPIB


Agilent / HP 83592C RF Signal Generator Plug-in Module,

 

AGILENT / HP 54641D Mixed Signal Oscilloscope 350 MHz 
 

Keithley 580 Micro-Ohmmeter: 10 Micro-ohm Meter Sensiti
 

Agilent / HP 8990A Peak Power Analyzer, -32 dBm to +20 
 

Anritsu MS2711A Spectrum Analyzer, 300 kHz to 3 GHz w/ 
 

Agilent / HP 8510C Network Analyzer: 45 MHz to 110 GHz
 

Bird Electronics 4421 RF Power Meter
 

ANRITSU MT8820A Radio Communication Analyzer + OPTIONS
 

Agilent HP 85640A Tracking Generator, 300 kHz to 2.9 GH
 

Agilent / HP 16720A Pattern Generator Module, 300 M Vec

 

Agilent / HP 6628A Dual DC Power Supply, 50W, 16V, 200m
 

Agilent / HP 6675A Power Supply, 120V, 18A, 2000W

 

Agilent / HP 85029B Verification Kit, 7 mm
 

Agilent / HP 85033C Calibration Kit, 3.5mm
 

Agilent / HP 41952A Transmission / Reflection Test Set,
 

Agilent / HP 6032A DC Power Supply, 60V/50A


Agilent / HP 4263B LCR Meter + Option 001: Add N/M/DCR 



Agilent / HP E1852B Bluetooth Test Set



Keithley 2010 Digital Multimeter, 7.5 Digit DMM


Tektronix TDS744A Oscilloscope, 500 MHz, 4 Ch., 2.5 GS/


Stanford Research SR530 Lock-In Amplifier, Dual Channel


Agilent / HP 6060B Electronic Load, 3 - 60V, 0 - 60A, 3


Tektronix AWG2021 Arbitrary Waveform Generator, 10 Hz -


Agilent / HP E4418B Power Meter, 9 kHz to 110 GHz + Opt
 

Boonton 4232A Dual Channel Power Meter
 

Agilent / HP 41951A Impedance Test Kit
 

Tektronix TDS3032 Portable Digital Oscilloscope, 300 MH