1794-OE12
1794-OE12
1794-OE12
对PLC系统而言，常采用共模干扰和差模干扰的分类方法。共模干扰主要由电网串入、地电位差及空间电磁辐射在信号线上感应的共态（同方向）电压迭加所形成。共模电压有时较大，特别是采用隔离性能差的配电器供电时，变送器输出信号的共模电压普遍较高，有的可高达130V以上。共模电压通过不对称电路可转换成差模电压，直接影响测控信号，造成元器件损坏，这就是一些系统I／O模件损坏率较高的主要原因。这种共模干扰可为直流，亦可为交流。差模干扰主要由空间电磁场在信号间耦合感应及由不平衡电路转换共模干扰所形成的电压，这种干扰直接叠加在信号上，直接影响测量与控制精度。此外，按噪声产生的原因，分为放电噪声、浪涌噪声、高频振荡噪声等；按噪声的波形、性质，分为持续噪声、偶发噪声等。
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
厦门泰尼电气有限公司
Xiamen Thani Electric Co.,Ltd
联系人：小黄
电话:
手机:
QQ:2917675397
传真:
Adress:厦门市海沧区滨湖一里7号2008室
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
NORTEL NTCA04MD OPTERA OPTA-LH 10G RGRCVR UNIT WMR3J60
NORTEL NTCA04MP OPTERA OPTA-LH 10G RGRCVR UNIT WMR4FB0
NORTEL NTCA04NE OPTERA OPTA-LH 10G RGRCVR UNIT WMR3JP0
NORTEL NTCA04QE OPTERA OPTA-LH 10G RGRCVR UNIT WMR3JF0
NORTEL NTCA04VD OPTERA OPTA-LH 10G RGRCVR UNIT WMR3J30
NORTEL NTCA04VE OPTERA OPTA-LH 10G RGRCVR UNIT WMR3JU0
NORTEL NTCA04VN OPTERA OPTA-LH 10G RGRCVR UNIT WMR3AUL
NORTEL NTCA04XP OPTERA OPTA-LH 10G RGRCVR UNIT WMR3F70
NORTEL NTCA04YE OPTERA OPTA-LH 10G RGRCVR UNIT WMR3JX0
NORTEL NTCA04ZD OPTERA OPTA-LH 10G RGRCVR UNIT WMR3J0S
Nortel AL4500E12-e6 POE routing switch 4550T 48 port
Nortel Meridian Mail
Nortel DS1404056 Ethernet Routing Switch 8648TXM Mod
Nortel Baystack BS5520-24T-PWR 5520 AL1001A06 216814
Nortel Baystack BS5520-24T-PWR 5520 AL1001A06-E5
20 Nortel I2004 NTDU82BA NTDU82 Icon Keys w PC PORT PS
Agilestar - AA1419025-E5-AS - For Nortel
Agilestar - AA1419026-E5-AS - For Nortel
Agilestar - AA1419027-E5-AS - For Nortel
Agilestar - AA1419028-E5-AS - For Nortel
Agilestar - AA1419030-E5-AS - For Nortel
Agilestar - AA1419031-E5-AS - For Nortel
Agilestar - AA1419032-E5-AS - For Nortel
MCK Citel E-GWY2T-SUM 24 Pt Nortel Avaya PBXGateway II
IBM 32R1868 4 port Nortel Layer 2-7 Gigabit Module
Avaya / Nortel BCM400 NT7B10AAFH - N0015222 3.7 (2 NTBB
IBM NORTEL 6-PORT 10GB ETHERNET SWITCH MODULE 39Y9265
Nortel/Avaya OPT11C Release 4.0t Succession NAPNS
Nortel/Avaya OPT11C Release 4.0t Succession NACCS
Nortel BCM200 4.0 Base System - Standard - NT7B10AAFU
NEW Nortel Ethernet Routing Switch 4550t Phone System
Nortel NTZF01BXE5 Optical Multiservice Edge OME6500 04
NORTEL 4p GE SFP Module NTNA50AA NTNA5002
Nortel Package #4 8 Lines, 24 Ext,4 Phones,Voicemail
Nortel Meridian NT5C07AC 50 amp Rectifier
NORTEL ETHERNET ROUTING SWITCH 4550T WITH AL4500E02E6
Nortel BCM50 r5 8x28 BCM 50 5.0 r5.0 4x12 + 4x16 16vm
Nortel BCM400 3.7 BCM 400 R3.7 64vm
NORTEL CORE CIRCUIT NTLX03AB OC-3 RTF NTLX08AB NTLX05AB
Nortel CallPilot 150 96 Mailboxes Call Pilot Voicemail
IBM 39Y9267 Nortel 10 Gb Ethernet Switch Module for IBM
Nortel Passport 1648T Layer 3 Routing 48 Port Switch A1
Nortel Ethernet Routing Switch 8393SF - DS1404076-E5
New in box Nortel DS Passport 8600
Nortel BCM50 r3 4x4x8 BCM 50 3.0 r3.0 2vpgwy MCDN ICC
Nortel Shasta 5000 BSN NTJT29CB 02 - SSC-II Subscriber
Nortel Networks DS1404093 Passport 8348GTX Module
NORTEL BCM 4.0 BCM400 2LAN STD + DSM32 + DTI Modules
40 NEW Nortel I2004 IP Phone NTEX00BB NTEX00 FirmwareUp
Northern Telecom NTRB33AA Fiber Junctor Nortel NTRB33AA
32R1783-Nortel 10 Gb Up
Nortel Contivity 2700 - DM1401104 Extranet VPN Router
Agilestar - AA1419051-E6 - For Nortel - New in Box
Tasman - E1/T1 1- HSSI Nortel Router
SR2104010E5 Nortel NM-1DS3 Module 3120 Clear Chan T3
Nortel 8610 Alteon L4-7 Web Sw Mod 4 Port DS1404045 WSM
Nortel 5520-48T-PWR AL1001E05-E5 AL1001A05-E5 48 Port
New Surplus Nortel 8608GBE DSBaseX GBIC MOD
Nortel Business Telephone System - Used Compact ICS
Nortel Contivity Extranet Switch 4500
Nortel Used Office Commercial Business Phone Systems
Nortel MGMFL-2BJC28 Multiwavelength Gain Module EDFA
Nortel Call Pilot 100/150 - 64 Mailbox Upgrade Key Code
Nortel Passport 1648T Layer 3 Routing 48 Port Switch A1
Nortel 5520-48T-PWR Ethernet Routing Switch ~STSI
Nortel Norstar Meridian BCM 50 NTBU0972 VOIP T7316e
NORTEL BCM50 VPIM AMIS MSG. NETWORKING AUTH. CODE
Nortel Norstar BCM 50 NTBU0972 VOIP i2004 5-New T7316e
Nortel Baystack BS5510-48T Gigabit Switch 10/100/1000
Nortel CICS System w/Startalk Flash & 7 Phones
Nortel CS1000E Daughterboard 96 NTHU61AA NTDW64AAE5 NEW
Nortel Optera NTN414AH VTX-48
Nortel Operating Phone System
Nortel Passport NTNQ21AA, fully tested
NORTEL DS1402001-E5GS SWITCH 8010 10-SLOT CHASSIS
Nortel Call Pilot 150 Voice Mail With 32 Mailboxes Rele
Nortel Norstar CICS Office Phone System w/ 10 T7316 VM
Nortel 5520-24T-PWR Gigabit Ethernet Switch AL1001A06
Nortel Optera NTCA03FA SNT3E7ECAA OC-192 STM-64 TX DWDM
Nortel Business Phone System Package #2 w/ 1yr Warranty
Nortel NT0H02KE OCLD 2 Connector Card New
Nortel Optera NTCA03XA SNT3E0XCAA OC-192 STM-64 TX DWDM
Nortel CS1000E & Business Communication Manager 400
Nortel NTUC39FA 2x 10G XFP I/O Module *Sold As-Is*
Nortel/Avaya Call Pilot Release 4.0 Tested ready
Nortel Ethernet Routing Switch 4550t-PWR Phone System
Nortel, SR0002E03E5 SR2330 128MB FL 1GB RAM 4 10/100 ..
NORTEL NTHW01EA 15000 PASSPORT 1POC48IR STM-16 ATM APS
Nortel/Avaya OPT11C 4.50w 48 IP pswd,keycodes & RTU
Nortel/Avaya NTDW61BAE5 CS1000 CP-PM 1.4GHZ ROHS
Nortel Norstar Meridian Office Phone System 4-T7316E
Nortel NT8D02HAE5 Extended XDLC Digitial PHONE Line
Norstar Nortel Meridian CICS T7316E T7208 Call Pilot
Nortel NTN414AH SNSXLNRBAB VTX-48e Optera Metro 3500
Nortel Ethernet Routing Switch 8393SF - DS1404076-E5
NORTEL ACCELAR 8648TX EXPANSION MODULE DS1404002
Norstar Nortel T7316E Telephone NT8B27 Char
Nortel Meridian MICB NT5D51AC Rlse 3 w/ ATA PC Card
Nortel NT0H01AD Opter Metro 5x00
Nortel NT0H02AA Optera Metro 5x00
IBM Nortel NTRWORK L2-L7 GBE Switch BLADECENTRE 73P9057
NORTEL/AUDIOCODES Mediant 1000 GTW 6CH T1/E1/PRI
Nortel CallPilot 150 CP150 80-MB Call Pilot Voicemail
Nortel Norstar Call Pilot 150 R3.1 Voicemail 8x100VM
Nortel, NTPW0130 NA BCM EXP UNIT UNIVERSAL POWER SUPPLY
5 NEW Nortel 1140e 1140 POE IP Phone NTYS05BEE6 NTYS05
NORTEL NT8E01QX LINEAR DM TX 1557
NEW Nortel Optical Multi Edge OME 6500 NTZF01DA PROC
NORTEL NTCA15EH Dual Amp L-band Optera Passport
Lot of 20 NORTEL BPS2000 AL2001A15 AL2001E15 AL2033010
Nortel Meridian Digital Phone system COMPLETE!
Nortel NT6P44BA 4.5GB HDD w/Pwer Sup Nortel NT6P44BA
