6DD1681-0CD0

6DD1681-0CD0

【廈門莫格電氣自動化有限公司】

【具體詢價咨詢-雷琳】

【：（同號）】

【】

【采購單*低10個點您拿單子，追求共贏！】

6DD1681-0CD0

 4)D／A輸出單元
D／A輸出單元負責將已累加／減數據轉換為模擬信號輸出。D／A輸出單元時序同步于控制脈沖。如果掃描控制器硬件資源不多，可以給每一個控制量單獨配置一個D／A轉換器；否則，可以將這些控制量先緩存起來再通過一個D／A轉換器輸出以減少硬件成本。
5)觸發(fā)單元
觸發(fā)單元接收到掃描使能控制字后控制步進脈沖發(fā)生單元使能端有效，步進脈沖發(fā)生單元開始工作，進而使得整個掃描控制器運轉起來。當觸發(fā)單元內計數器的計數值與接收到的用于計算掃描時間的計數量相同時表明掃描過程已經完成，這時觸發(fā)單元控制步進脈沖發(fā)生單元使能端失效，步進脈沖發(fā)生單元停止工作，掃描過程結束。另外，在掃描開始前觸發(fā)單元接收控制字產生全局中斷信號，通過中斷處理單元通知運算單元調用各硬件控制量的初始DAC值。
6)中斷處理單元
中斷處理單元根據預先設定的中斷優(yōu)先級別決定控制運算單元內各模塊的先后順序。中斷處理單元由中斷寄存器、中斷識別模塊、復位處理模塊三部分組成。組成框圖見圖2所示。

中斷處理過程如下：首先，四種中斷分別緩存入四個中斷寄存器。中斷寄存器使用FIFO存儲單元可以儲存多個中斷，利用FIFO存儲單元內部自身的標志位作為邏輯判斷依據可以簡化我們的設計。其次，中斷識別模塊檢測各FIFO存儲單元的空標志位。如果有任意一個FIFO存儲單元的空標志位為O，則說明有中斷產生，那么中斷識別模塊將按中斷優(yōu)先級別排序，并產生一個脈沖通知與zui高中斷級別相對應的運算單元內的數據調用模塊從RAM中讀取下一段控制量的初始值。再次，數據調用模塊完成讀取任務后返回給復位處理模塊一個處理程序完成標志。復位處理模塊在收到處理程序完成標志后根據輸出中斷類別產生讀脈沖至空標志位為O且中斷優(yōu)先級別zui高的中斷寄存器中。此時，中斷寄存器的空標志位有可能發(fā)生變化。zui后，中斷識別模塊再次檢測所有的空標志是否都為1，如果不是，中斷處理單元繼續(xù)上述過程直到所有的空標志都為1。中斷處理過程結束。
7)步進脈沖發(fā)生單元
步進脈沖發(fā)生單元內包含多個計數器，計數使能由觸發(fā)單元控制，計數器的模從地址譯碼／數據緩存單元讀取。每隔一定時間，步進脈沖發(fā)生單元產生計數脈沖作為累加／減器的時鐘并由運算單元內計數器計數。

4 設計實例
以某型號微波毫米波接收機為例。在此接收機中，系統(tǒng)總線設計為串行總線，需要控制的變量有YIG振蕩器頻率、YIG濾波器中心頻率、平坦度補償數據和預選器帶寬控制電壓。選用Altera公司的EplkSOQC208—3芯片作為數字掃描控制器芯片，IDT71V016SA20Y作為RAM存儲芯片，AD7538KR、DAC8412作為DAC轉換芯片。
經測量，YIG振蕩器頻率開環(huán)控制精度達到5MHz(接收機鎖相環(huán)的鎖頻范圍可達80MHz)，YIG濾波器中心頻率控制精度達到3MHz(YIG濾波器3dB帶寬zui小處40MHz)，平坦度補償值誤差小于O．2dB，預選器帶寬誤差小于帶寬2％。數字掃描控制器選用60MHz時鐘作為外部時鐘，在zui忙碌情況下(四種中斷同時到來)，完成四種中斷處理總時間小于5μs。
通過仿真和測試數字掃描控制器僅使用了FPGA內約70％的資源，可以為今后的模塊擴展留有余地。

5 結束語
對于掃描控制器自身硬件來說，我們可以通過將控制量曲線劃分更多段、更加逼近真實曲線，達到提高控制精度的目的；通過選用高檔的FPGA芯片并提高系統(tǒng)工作時鐘，達到提高控制速度的目的。但在實際使用過程中，我們還必須綜合考慮硬件自身的性能(如YIG器件磁滯效應、機械開關切換時間、中頻濾波器響應時間等)、軟件設計復雜度、要求的性能指標等多組因素對掃描控制精度、速度的影響，合理選擇劃分段數及工作時鐘，zui大限度挖掘出接收機潛能。

Mango DSP 6U CompactPCI 350-00010-001 503-00057 Encoder from Envivio 4Caster

Envivio 4Caster HD3 Real Time HD Encoding System

Lambda PF990231B1 High Voltage Power Supply Module from Envivio HD3 Encoder

LOT of 5 Momentum CompactPCI Single-Board Computer Ocelot-C Ocelot-G MIPS SBC

HP Hewlett Packard 92922A 4-Channel RS232C Adapter

Lot of 15 Texas Inst. PTH12030WAZ Non-Isolated Wide-Output Adjust Power Module

Cadence Simulation Acceleration Card 2500000010356

Coryell & Wiprud EV-4014PLD Quad Digital Receiver Board

Hewlett-Packard HP Agilent 10889A PC Servo-Axis Board

Hewlett-Packard HP Agilent 10886A PC Compensation Board

HP Hewlett-Packard 10887A PC Calibrator Board ISA

IMC Networks PowerTray/18-AC 18-Slot Rackmount Chassis for MiniMc ModeConverter

DigiTech DSP-256XL DSP 256 Multi Effects Processor (Parts/Repair)

Lot of 12 ADIC DLTtape IV Data Cartridge

Panasonic KX-TVS225 4-Port Voicemal System

New! Kitagawa Unico Komyo Model 400 100 ml Precision Sampling Pump

New Dell FF340 QLE2462 4 GB PCI-E Fibre Channel HBA Card

Clifton Precision 435-1-103 Angle Positioner with CTH-15-F-4 Control Transformer

Wandel & Goltermann REU-5340 BN 402/28 0063 AH 5340KHz RE-25 Converter Plug-In

Wandel & Goltermann REU-1248 BN 409/19 0046 AJ 1248kHz RE-25 Converter Plug-In

Wandel & Goltermann REU-394 BN 402/13 0011 M 394kHz RE-25 Converter Plug-In

New Opened Box Dell UH349 Laser Printer Fuser HY723

Wandel & Goltermann REU-43762 BN 402/53 0001 D 43762kHz RE-25 Converter Plug-In

Wandel & Goltermann REU-270 BN 402/11 0030 AL 270kHz RE-25 Converter Plug-In

Wandel & Goltermann REU-3886 BN 402/26 0041 AC 3886kHz RE-25 Converter Plug-In

Wandel & Goltermann REU-270 BN 402/11 0008 AK 270kHz RE-25 Converter Plug-In

Wandel & Goltermann REU-1248 BN 402/19 0009 R 1248kHz RE-25 Converter Plug-In

Sprecher + Schuh IEC Manual Motor Starter Protector KTA3-25 /PA-11

Kingston KTH-XW667/16G 16GB (2x8GB) 2RX4 PC2-5300F FB-DIMM Server Memory RAM

Mitutoyo DGE-731 179-731 Lamina-Checker Coating Thickness Gauge English/Metric

New! Rittal PS 4638600 Utility Shelf for 600W TS

Cutler-Hammer Series C 15A 3 Pole 480 VAC-250VDC EHD3015 6638C90G84

Peco 2 II Switchmode Rectifier PEC 1015 48V DC

In Server System SR1529ML SR1529MLNA Kit

Sony YS-DX504 Duplex Multiplexer

Locus Inc. RF-1985C Low Noise Amplifier LNA

Instrument Systems RPA 2000 Polarization Analyzer for Parts/Repair

HP Proliant DL160 G5 2x Quad-Core Xeon E5472 @ 3.0GHz 4GB PC2-5300 FBDIMM Server

Tut Systems XL-1010M FastCopper Bridge 810-06351-14

Brocade 002-002212-210 Power Distribution Assembly

NEAT 2 Inch Travel Motorized Manual Linear Positioning Actuator

Vixel 335 12-Port Fibre Channel Loop Switch with InSpeed Technology

NetApp X2051A-E0 Dual Channel Card

Dunkermotoren BG75X75PI DC Servo Motor 40 VDC 3700 RPM 450 (Good Condition)

NetApp X1086A-R6 Rev. D0 Card

American Aerospace Controls AAC 1003AM3-500-B Current Sensor Transducer

Highland Technology Model L260 Matching Network 26A260-1D

Velocity11 / Agilent 11484.102 30uL Tips 10 Racks

Digi RPM 8 Dom (1P) 50000889-01 Remote Power Manager

Parker 4006M

Konf 200 Conference Phone

Dynamic Engineering cPCIBPMC3U64ET cPCI to PMC Carrier Adapter Card CompactPCI

Cosel ACE650F 650W ACE Series Modular AC/DC Power Supply 18V 30.6A AC6-OGGGG-07

HP Hewlett Packard 3325A Synthesizer / Function Generator

Tripp Lite BP48V18 External Battery Pack for UPS Systems

Touch Screen 6210584-25 Display Industrial Operator Interface Panel PLC

Hewlett-Packard HP 416271-001 StorageWorks DAT 40 Tape Drive

Baldor 2-547-332-999 Industrial Motor 33-1289-1286 .17 HP 110V 1425 RPM

National Instruments NI IMAQ-DSHC68-04-?1 187804B-01 Cable

Premotec 4322 016 58023 BL58 Tuthill K11080 Pump

New! Vonia EZ-7000 Stereo Bone Conduction BCT Bluetooth Handsfree Headset

RVSI Acuity CiMatrix MX712 Video Camera Controller

QuickLabel Systems RW-P1 Label Rewinder/Unwind?er 120V 60Hz

HP Hewlett Packard 5005B Signature Multimeter Probe Switch & Timing Pod

New! Corelis PI-RM5231 Analysis Probe & JM Delta Probe

MKS HPS 941 COLD CATHODE GAUGE TORR 210-250VAC 7W Good Condition

HP Hewlett Packard 5328A Universal Counter Dual Channel

Pfeiffer TVF 005 Turbo Pump Venting Valve PM Z01 135 (TVF005) 24VDC NEW

HP Agilent 94802-61062 1MHz 16-Bit Digitizer Module for 94000 Series IC Tester

HP Agilent E3003-61055 Analog Ground Measurement Module for 94000 Series Tester

HP Agilent E3003-61002 MA OPT I/F SMA Plug-In Module for 94000 Series IC Tester

Hewlett-Packard HP A5528A 18 GB 7200 RPM SCSI Hard Drive A5332-60050

Compaq 154854-001 Quantum 6310827-01 Rev D Graphical Display

EBM Papst D1G133-DC17-52 Centrifugal Blower

KLEIBER Infrared GmbH KD 60-2 Digital Controller

Stereo Microscope Holder on Boom Stand Arm with Dual Fiber Optic Light Guides

Clean IQ Hach IQ240 pH mV Temperature Meter with SmartLogger Software

Vintage Non-Linear Systems NLS Kaypro II Portable Computer / Keyboard / 2 Floppy

SMC VV5Q11-15-DAM00?140 VV5Q11 15-Station Solenoid Valve Manifold

Force Computers IOBP-520 CPU SPARC Rear Transition Module 105008

Elrest Automation Systems ElaCan 1061217 / 5004103

Stec Mass Flow Controller SEC 4400RC 290 Hydrogen Gas

HP Agilent J2301B Internet Advisor OPT 220 221 J2298B J2306B Ethernet Interface

LOT of 45 OMRON EE-SPX303 Micro Photo Sensor w/ EE-1006 Connector (Cut Cable)

New Opened Box Cisco Systems BC-6083A-SR Back Card/Subrate

UNIT UFC-8160 Digital MFC Mass Flow Controller 1 SLPM SiH4 Calibrated 12/12

UNIT UFC-8160 Digital MFC Mass Flow Controller 20 SLPM N2O Calibrated 12/12

Reichert Neoplan 50/0.80 Oil (50) Microscope Objective (Good Condition)

HP Agilent Hewlett Packard 10761-60001 Multiplier Board

TEK Tektronix FET Probe 010-0198-00 & Power Supply 015-0073-00

HP Hewlett Packard PN: G4280-60070 Analytical Degassing Unit Offset (mv) 2.1

Ebmpapst ECI 63.40 18V 440mNm DC Motor 15,000 1/min Good Condition

Toth 300-500MHz 440MHz Ham Radio Antenna Left-Hand Polarized Spiral

HP Agilent E1485A 75000 Series C VXI Signal Processor Card

Hewlett Packard / Agilent LST282X Coaxial Pigtailed Laser Module

Anritsu Meter Co. ACSII-2000 CH-9000C Digital Temp Controller (Parts/Repair)

Pfeiffer Balzers BSD 104 Rotary Cage Control Module

Nice Sony SMO-S541 2.6GB External SCSI 5.25" MO Magneto Optical Disk Drive

Accu-Fab 1200 Series Controller AFS 286 Rackmount Computer System

New! HP A2095-69500 A2095-69512C HP 9000 735/99 CPU Board NIB

Camden Marketing CX-925-12TDS Magnetic Auxiliary Lock 21" w/ (2) Plates

Tenma Triple Output Power Supply 72-4045A

New Samsung 840 Pro Series MZ-7PD256BW 256 GB SATA III SSD

PSC, Inc. Model 30D 0-25/30 AMP Impedance Tester

National Instruments 183617B-01 PCI-GPIB IEEE 488.2 Interface Card

Entegris HWS300-G2-1Pack?-Kit SmartStack Horizontal Wafer Shipper 300MM NEW

Leitz Wetzlar AF Microscope Vertical Illuminator (1X) Attachment 563344

Nikon Binocular Microscope Head w/ Vertical Illuminator (No Eyepieces)

Shrader Scientific Automatic Valve Controller 725-0061-1 Parts/Repair

Leitz Wetzlar AF Microscope Vertical Illuminator (∞/1X) Attachment 563343

Clean ICS ICS-660 4-Channel 65MHz 14-bit DAC PCI Data Acquisition Board

Ithaco 9" Optical Light Beam Chopper Head

LOT of 2 HP Agilent Verigy Versatest PC Interface Boards BRD-V2190 E7080-66526

Kepco PRM 48-10 450W Voltage Regulator Power Supply

Dialogic MSI/80SC ISA Board

LOT of 4 WIKA ECO-1 Pressure Transmitter Range 0-25 Bar ECO1

UL1015 Nabond Wire 22/7 Gauge ROHS 2500 Feet on Spool NEW

HP Agilent 3488A Switch Control Unit w/ 44470A Relay Multiplier

HP Power Monitoring PDU S348 395327-001 398922-D71 12-Outlet 48A 3PH Half-Rack

Vintage Sony SL-20 Betamax Video Cassette Recorder VCR BII BIII

Nor Networks XLR1298PS P/N: 200167-B 284 Watt Power Supply

HP Hewlett Packard Agilent Symmetricom 58509A GPS Antenna Line Amplifier

Lot of 10 Agilent HFBR-5912E MT-RJ Fiber Optic Transceiver

UNIT UFC-8160 Digital MFC High Performance Mass Flow Controller 2L NO

428-00387 REV A 4-ft Alpha Wire 3248 with 2 LEMO FGG.3B Push/Pull Connectors

UNIT UFC-8160 Digital MFC High Performance Mass Flow Controller 2 SLM C2F6

Adaptec ICP5125BR/256MB 8x PCI Express SAS/SATA Raid Controller

Millipore WCDS000F2 Lo Viscosity Pump Controller F2 CDA/N2 IN-40PSI Max

Leica Microscope Controller 301-336.029-000

Clean Eurotherm Drives 650 AC Drive 650/015/230/0/0?0/DISP/GR/0/0 FW 4V6

3Com 3C95101M-MGTA Advanced Ethernet Management Module

Skutch Electronics AS2500 2-Port Remote Power Controller AS2500-3

New! 6-Pin/Pole M to F Control Cable 12M LlYC11Y 3x2x0.5 mm2 Wieland Connectors

Clean Brooks GF100CXXC MFC Mass Flow Controller GF100C-853265 5 SCCM CH4

3Com 3C6071 Netbuilder II EM 100B-FX 20-0391-000

New! SuperMicro Ablecom PWS-1K22-1R 1200W Redundant Power Supply Module

Millipore Mykrolis InliFlow II Mass Flow Controller DSPAF100 500 SCCM He

3COM 3C6020B NetBuilder II M/M FDDI+ Module P/N: 20-0350-000

Tylan 2900 Series MFC Mass Flow Controller FC-2900M 500 SCCM NF2

Tylan 2950 Series MFC Mass Flow Controller FC-2952MOEP5 200 SCCM N2

Tylan 2950 Series MFC Mass Flow Controller FC-2952MOEP5-T 10 SLPM O2

Tylan 2900 Series MFC Mass Flow Controller DFC-2900MEP5 500 SCCM CF4

Tylan 2900 Series MFC Mass Flow Controller FC-2900V 500 SCCM CH2F2

Radisys EXM-22 GPIB High Speed GPIB Interface Card
Georg Fischer SK 20 Variable Area Flow Meter 300-3000 l/h

Lot of 2 Festo SFC-DC Motor Controllers 538913 VN07 SFC-DC-VC-3-E-H?2-IO

Tektronix J6505 Red Ft. Candles Photometer Illuminance Probe with 014-0047-00

HP Agilent PCI System Interface Controller Card E7080-665 with E7078-61646 Cable

Oriel 13955 Fused Silica Cuvette 10x10x45 Teflon Cover

STI Scientific Technologies VS6560-0.75R Vehicle Scanner Receiver 42926-0600

STI Scientific Technologies VSS6060-0.50R Vehicle Scanner Receiver 42955-0600

Tut Systems XL-1010 FastCopper Bridge 810-06342-15

Hewlett Packard HP A7346A surestore fc 1Gb / 2Gb Entry Switch A7346-63001

APC AP9420 InfaStruXure Manager Appliance

New! JVC VC-544U Camera Cable

Hewlett Packard HP 1660C Logic Analyzer

HP 55415B Option 001 Enhanced Transit Node ITH Card

APC AP7941 Switched Rack PDU Zero U 30A 200/208V (21)C13 (3)C19

Dell PowerEdge 1950 1x Quad-Core Xeon @ 1.86GHz 4GB RAM PERC 5/i RAID

Triplett Model 3 Type 3 Local Loop Tester w/ Probes

3Com 3C6012A NetBuilder II CEC-STAR 20MB 20-0448-00

HP Hewlett-Packard 8181A Data Generator Extender

Hewlett-Packard HP J8764A ProCurve 16-Port Gig-T vl Module

New IBM 40K9615 DPI 60a (IEC 309 2P+G)

HP DL380 G4 2x Xeon 3.2GHz 4GB RAM 2U Server

HP Hewlett Packard Agilent 9100297802 Cbl Assy 1/4 Wave NType 30-60MHz 48.4in

Foresystems ForeRunner ASX-200BX ATM Switch

TRACO POWER TSL 480-155PX 54.4VDC 8.8A Industrial Power Supply

3Com 3C10117C NBX Analog Terminal Card 655-0091-01

AdTran 1200307L1 T1/PRI Network Module

Cathodeon 3QNY/Zn Hollow Cathode Lamp

Hewlett-Packard HP Envy 110 D411A All-In-One Inkjet Printer

Brixon #93 Stainless Steel Door Latch Body, Strike & Handle - Left Handed

ARM MultiICE JTAG Model 82 Interface Unit

Cisco Systems 2511-DC Router

Agilent Hewlett-Packard HP E4506A Data Capture Card OPT STD

Hughes Solid State Microwave Amplifier Model 1407H

National Instruments 181435-10 AT-A0-6/10 Card

NEC NEAX2000 IPS/IVS PN-4COTG 4-Port Caller ID Trunk Circuit Card

Lot of 3 Siemens PTM6.2I420 Point Termination Modules

Smart 32GB (32x1GB) DDR 400 PC-3200 ECC Reg CL3 Server Memory SM12872RDDR8H2B?GIC

IOtech 1700-0113 GPIB IEEE-488 16-Bit ISA Interface Card

Astec LPQ142 145W Power Supply

New/Opened Box Mi Dataset 2103 Stand Alone Module 9141-210-300-NA

New! Dell CD621 Single-Port 4Gb PCIe Fibre Channel Host Bus Adapter HBA LPe-1150

Entegris HWS300-G2-61C02?B SmartStack Horizontal Wafer Shipper 300MM NEW/Sealed

Lambda UEZ1AEFGY Ultraflex 1500-Watt Power Supply

AMP Precision 220022-1 Controlled Ratchet Crimping Hand Tool w/Manual NEW

Hewlett Packard HP Smart Buy S-Buy 4GB 1RX4 PC3 10600R-9 Kit 593339-S21

New! In S3000PT LGA775 i3000 Blade Server Motherboard

New Opened Box Cisco Systems CP-7942G IP Phone

Lab Systems Chromatography Server Data Acquisition System