描述
首先清楚知道該層布線點(diǎn)的數(shù)量,算出交換機(jī)的臺(tái)數(shù),交換機(jī)之間連接是堆疊還是不堆疊。如果堆疊,核心交換機(jī)為雙機(jī)熱備冗余的話,6芯就夠用了(2臺(tái)核心各用2芯,2芯冗余)。如果不堆疊一臺(tái)交換機(jī)要4芯,交換機(jī)數(shù)量乘以4加上4芯的冗余,就可以了。(注:冗余:只要比用的多,多出的就叫冗余主備:一個(gè)用的,另外一個(gè)完全一樣的做備用;熱備份:同時(shí)都在工作狀態(tài)中;冷備份:備份設(shè)備處于待機(jī)狀態(tài)。)
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主營(yíng):世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國(guó)西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
HP AGILENT 04085-61651 FIBER OPTIC TEST FUXTURE ADAPTER
AIRTIGHT NETWORKS SPECTRAGUARD SA-210 WIRELESS VPN
AGILENT HP 8590A 1.5 GHz RF SPECTRUM ANALYZER 021 -G
AGILENT HP K382A WAVEGUIDE ATTENUATOR WITH 2X K281C
TTC ACTERNA JDSU FIREBERD 41075 ISDN S/T TE INTERFACE
MATRIX PSX-6 SIGNAL GENERATOR CATV 4-CHANNEL
OPTO POWER OPC-PS4005 LASER DIODE DRIVER 40A 40 A AMP
COAXIAL DYNAMICS 83550 DIGITAL RF WATTMETER EXPEDITER
Cisco AS5300 Chassis RAS VOIP IVR 64/16/8 AC
PTS 160 MHz FREQUENCY SYNTHESIZER SIGNAL GENERATOR GPIB
CORELIS NETICE-R JR ROM LAN BASED ROM EMULATOR NO JTAG
AGILENT HP 16700A & 3 16557D LOGIC ANALYZER MAINFRAME
ADTECH 1GBPS GENERATOR ANALYZER 401400 & DS3 INTERFACE
EMBEDDED PERFORMANCE MAJIC JTAG INTERFACE CONTROLLER
MOTION ANALYSIS VP320 CAMERA VIDEO PROCESSOR DIGITIZER
AGILENT HP 70842B ERROR DETECTOR 0.1 – 3 GBIT/s
AGILENT HP 70612A K52 MMS INTERFACE POWER AMPLIFIER
ANRITSU MP1552B SDH PDH ATM ANALYZER
AVANEX OPTICAL AMPLIFIER EDFA 13 dBm 800-1700 nm
TEKTRONIX TCPA300 AC/DC CURRENT PROBE AMPLIFIER
NIKON SMZ800 STEREOZOOM MICROSCOPE BODY
LEICA 10445822 STEREOZOOM MICROSCOPE HEAD MZ SERIES
WILD LEICA M8 STEREO ZOOM MICROSCOPE 20X EYEPIECES
AGILENT HP 70810B LIGHTWAVE SECTION 1200 – 1600 nm
NIST SRM 2517 Wavelength Reference Absorption SRM-2517a
AGILENT HP N1738A AURORAPRESTO ADSL HANDHELD TESTER
BRONKHORST E-7120 MFC GAS FLOW CONTROLLER E-7000
NATIONAL INSTRUMENTS NI PXI 6052E MULTIFUNCTION DAQ
GRASS VALLEY GROUP GVG MAX 9000 SDI DISTRIBUTION AMP
HUGHES 1177H07F000 TRAVELING WAVE TUBE AMPLIFIER 10 W
ACCURATE GAS CONTROL 354C CHILLER HEATER RECIRCULATOR
THOMAS & BETTS T&B 13100A 14TON HYDRAULIC CRIMPING HEAD
STRUERS ACCUTOM PRECISION VARIABLE CUT OFF SAW BUEHLER
WILD M8 STEREOZOOM MICROSCOPE PLAN 1X OBJECTIVE
DICON PS-22-4-9-13/15?-FC/APC FIBER OPTIC SWITCH GP700M
SCHLEUNIGER CC-15 GRIP TECH COMPONENT COUNTING SYSTEM
KEITHLEY 487 PICOAMETER VOLTAGE SOURCE
MIRANDA SYMPHONIE 5X SDA-102I 10X ADP-101I AMPLIFIER -P
CORELIS NETICE-R JR ROM LAN BASED ROM EMULATOR NO JTAG
HASKRIS R100 REFRIGERATED WATER RECIRCULATING SYSTEM
SORENSEN DCS80-37E DCS 80 PROGRAMMABLE DC SUPPLY GPIB
HP AGILENT 83487A H46 OPTICAL ELECTRICAL PLUG-IN
MIRANDA SYMPHONIE 10X ADP-101I VFC-123I SDM-712I -R
TEKTRONIX CSA803 CSA 803 COMMUNICATIONS SIGNAL ANALYZER
DICON PM-1X16-9-13/15?-FC/APC FIBER OPTIC SWITCH GP700M
PHOTONETICS TUNICS METRICOR 1450 FIBEROPTIC MULTISENSOR
UDT 2500 INTEGRATING SPHERE LASER POWER ATTENUATOR
HIOS HP-100 TORQUE METER TESTER HP 100
LARUS STS 5400 DS1 (E1) SYNCHRONIZATION TIMING SYSTEM
XYLAN OMNISWITCH 5 SLOT 13.2 GBPS AC
HP AGILENT 33220A 20MHZ FUNCTION WAVEFORM GENERATOR
Evertz 8074 Digital Video Closed Caption Encoder
ALLEN BRADLEY 2802-CAM1 LINE SCAN CAMERA W 2801-EIA
UDT 2500 INTEGRATING SPHERE LASER POWER ATTENUATOR
ANRITSU MU931311A OPTICAL POWER SENSOR 800-1600NM
SUNRISE TELECOM SUNSET E1 HANDHELD TESTER SS200
AEROTECH ATS100-50-U-20P LINEAR STAGE MOTION CONTROL
TANDBERG TELEVISION MX5620 MULTIPLEXER EVOLUTION 5000
NIKON P-BERG TILTING MICROSCOPE HEAD WITH C-W10X 22
SORENSEN XANTREX DCS80-37 DCS 80V DC POWER SUPPLY GPIB
DRUCK GE DPI 145 DIGITAL PRESSURE INDICATOR 30 IN H2O G
MIRANDA SYMPHONIE 9X ADP-101I SDM-722I VFC-123I -J
DRUCK GE DPI 145 DIGITAL PRESSURE INDICATOR 60 KPA G
SPIRENT SMARTBITS POS-3505As OC-48C TERAMETRICS TESTER
HP AGILENT 6575A DC POWER SUPPLY 120 V 18 A 2000 W
MIRANDA SYMPHONIE X4 ASD-702I SDM-702I SDM-722I -A
SPIRENT SMARTBITS POS-3502A OC-3 SMARTMETRICS MODULE
NESLAB THERMO COOLFLOW CFT-33 LAB CHILLER RECIRCULATOR
SORENSEN DCS150-7E 1000W DC POWER SUPPLY GPIB
SPECTRA PHYSICS HS50A-NSI LASER 30HZ
TIMETER MEDICAL VENTILATOR CALIBRATION ANALYZER SERIES
HP AGILENT 37717C OMNIBER 717C ATM SDH PDH ANALYZER – C
BRONKHORST W-202-880-P CONTROLLED EVAPORATOR MIXER CEM
SEIKOH GIKEN RCG-520-MUU MU PLATE FIBER POLISHING 520
EG&G ASTROPHYSICS MAIL BOX SECURITY X-RAY XRAY SYSTEM
AGILENT HP 8922H GSM MOBILE STATION TEST SET ~ 8922M
AMREL MPS 60-10 PROGRAMMABLE DC POWER SUPPLY MPS60-10
F W BELL 5080 GAUSS TESLAMETER WITH PROBE STD58-0404
FLUKE 2625A HYDRA DATA LOGGER WITH UNIVERSAL MODULE
UDT INSTRUMENTS S380 DUAL-CHANNEL POWER METER OPTOMETER
EXFO NOVACURE 2100 SPOT CURING SYSTEM
HP AGILENT 1671D LOGIC ANALYZER 100 MHZ STATE 030
DELTA F CORP FA31110SA OXYGEN ANALYZER 115VAC