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3RX9 503-0BA00

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福建光沃自动化设备有限公司       
联系人    ：欧工（销售经理）                                         
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频谱监控、信号分析、光达信号采集、光纤测试、雷达及卫星信号收集等应用，属于典型高速及高精确度数据采集应用。这些应用对工程师们最大的挑战就是要如何满足高带宽的系统需求。本文将分享以PXI Express平台在建构高带宽系统时所需要考虑的细节，例如数字化仪或波型产生器的板载内存、PXI Express机箱内的PCIe信号架构、计算机操作系统、内存及储存装置的选择。

简介

传统桌面型仪器的数据传输接口为GPIB、RS-232或是LAN，这些接口的好处在于非常容易操作使用，但在传输大量数据时其效率并不理想。当要采集大量连续数据时，数据长度就会因为内部存储器大小而受限。目前市面上新款的高级仪器，例如示波器、波型发生器或逻辑分析仪，采用x86的架构，因此在高速、大量数据采集的长度上则基本上没有限制。但若要跨仪器同步达到多通道采集时，便是个困难且复杂的课题。

自从1998年第一版的PXI规格问世后，PXI平台与其模块已经被大量应用于军工、电子制造及科学研究应用中。第一版的PXI规格采用了PCI总线的高速传输特性，而后续的PXI规范更采用了PCI Express总线，继承了其低延迟(Low Latency)、高带宽及点对点传输的特性，另外再加上特有的触发与时序同步的接口，使得PXI平台与PXI模块特别适合应用于高速数据传输。

当以PXI平台设计适用于高速数据记录的系统，不管是将数据连续由模块化仪器传送至系统内存或存储装置，
或者相反的数据流向，都能够利用PXI Express的高速总线、点对点传输的特性以及特有的触发与时序信号，轻松地完成实现。接下来的文章内容将进一步讨论，在设计、实现数据记录系统的过程中，需要考虑的几个要点与方向。

数据记录系统的架构及其考量因素

下图一简单的示意了一组PXI Express平台中数据的流向，组成的组件包含了PXI Express机箱、PXI Express控制器及模块化仪器，包含数字化仪及波形发生器。以高速数字化仪为例，模拟信号被ADC采集转换成数字量数据后，会搬移到板载内存上暂存，接下来再经由总线控制器及PCI Express接口，

FOXBORO 873 PH/ORP ANALYZER

FOXBORO 7925050IC MODULE

FOXBORO I/A P0901VK 80MB HARD DRIVE AP20 S/W

FOXBORO I/A P0400ZG NODE BUS INTERFACE (NBI)

FOXBORO I/A P0901VK 80MB HARD DRIVE W/ AP20

FOXBORO I/A P0400VT AP20 APPLICATIONS PROCESSOR 20

FOXBORO I/A P0400QK PER TAPE W/CONT

FOXBORO F6501A-A RS485-RS232 Converter

MOHEAER M4938 BEARING SUPPORT

BARRETT 100-2 REFRACTORY ANCHOR

ELGIN 15829-001 REV A DC POWER SUPPLY

Hewlett Packard 6459A Analog Power Supply

CAL-Power M-6175 DC Power Supply

IPITEK RPR-CH Reserve Optical

IPITEK RPR-AUX 24 Auxiliary Power Supply

National Instruments VXI-TB-196

Modicon PC-0984-485 Programmable Controller

INTERGRAPH 517526-9030 BOARD

27 Mercury 32-858103Q12 Fuel Line Assembly 12Ft

20 Mercury 32-858103K12 Fuel Line Assembly 12Ft

EG&G MTE-2110-706FE FIELD DC SERVO MOTOR

1200 DURABELT DIRT DEVIL 67022 VACUUM BELTS 22''

HP AGILENT E2251A VXI MODULE

TEKTRONIX VX4287 A/D INPUT MODULE

29 110-2354 REVD BOARD

NAS-497E F3N3K0057-C3 BOARD

NAS-466B F3N3K0017-B3 TW4D-0017A BOARD

CARL ZEISS 517526-9001 CHASSIS

HELLERMANN TYTON AUTOTOOL 2000 CABLE TIE TOOL

3/4'' CORRUGATED PLASTIC TUBING CABLE ORGANIZER 2500'

5/8'' CORRUGATED PLASTIC TUBING CABLE ORGANIZER 3500'

PROLOG PL 7874A 0787874G BOARD

YAMAHA F17 Linear Electric Actuator 1250mm Stroke

5 EL-O-MATIC VALVE ACTUATOR 120PSIG

WESTINGHOUSE A210M0CAC MOD J MOTOR CONTROL

Adept 01182-000 Dual C Amp Board

Adept Technology 10338-53105 Dual C Amp Board

Adept Technology 10332-00800 DIO Board

Adept Technology 10332-00505 R EJI Board

Adept 10350-01044 AWCII Board

IAI IS-L-Y-M-20 Linear Electric Actuator 700mm Stroke

AD 65793-507 Amplifier Detector

AD 65794-507 Amplifier Audio Frequency

AD 67043-401-1 Power Supply

Boeing T2120047 Test Set

6 SHAFTS W/ BEARING SUPPORT

3 GN8040GJN 7229 Filter RO Filter

MECC YAM-22 Yoke Assembly Machine

Kulicke and Soffa 01418-4092-000-?01

AB SLC150 1745-LP151 Ser C FRN6 Allen Bradley Prog. Co

Kulicke and Soffa 01483-4005-000-?17 Board K&S

1190 Ademco PRO Pro45TWH

Chemical Safety CST-5/2-PS Pump Station

MTECH Antic Actuator Ultrasonic

Gamma CRT40-5P/110/22?0/M360A HV Power Supply

ULTRAK KEGS5000 SYSTEM CONTROLLER

460 Brad Harrison 175a 2 Pole Battery Cable Connector

D 100 Series Screw Nut Driver

Omron Sysmac C25K-CDR-A PLC

7 IBM 39V2212 Hy Toner Cartridge Cyan

Kollmorgen MC8803-1608-000 Servo Star

Kollmorgen BDS5A-103-00010?/202B2-030 Servo Amplifier B

Kulicke and soffa 06150-4160-000-?61R Board

Kulicke and Soffa 02920-4318-000-?33 Board

Kulicke and Soffa 00797-4188-000-?13

Kulicke and Soffa 02920-4318-000-?35 Board

Kulicke and Soffa 06150-4130-000-?03 Board

Kulicke and Soffa 02920-4130-000-?21 Board

Kulicke and Soffa 2920-4318-000-3?5R Board

Kulicke and Soffa 01482-4031-000-?35

Kulicke and Soffa 00797-4235-000-?83 Board

Kulicke and Soffa 06100-4330-000-?66 Board

Kulicke and Soffa 6100-4330-0-21R Board

Kulicke and Soffa 06100-4330-000-?21 Board

SEFT DA-110SH Display Analyzer RC-10

VWR Scientific VWR105 DC Power Supply

ELECTRONIC MEASUREMENTS TCR 20T500-1 DC POWER SUPPLY

6 SHAFTS W/ SUPPORT BEARINGS 5/8''

15 NB SMF30GWUU LINEAR BALL BEARING W/ QUICK SHAFTS

ProLog 7826-01 Rev 005 80486 multi master card + VDB87

2350 EFD 5125-B DISPENSING TIPS

8 AMAX EVANOHM Resistence Wire Spools

3 PCB ROLLING RACK 36''X67.5''

INTELLIGENT REASONING INDUSTRIAL COMPUTER

ADEPT 10330-00800 I/O CARD

105 CLIPPARD SMAV-3 PNEUMATIC VALVES 3WAY

WARNER ELECTRIC PB-1225 BRAKE MAGNET

FOXBORO A105 316SS 500PSI VALVE

SVG 8826PC/8836HPO CONTROL INTERFACE

3 DUPONT 460/1PT PHOTOMETRIC ANALYZER

HYACINTH TECHNOLOGY HTCM0120

P&H HARNISCHFEGER 100E4896-1 BRAKE CONTROL CIRCUIT

UNITED SCIENCES 1002-0400-06

UNITED SCIENCES 601-0400-02

UNITED SCIENCES 1003-0900-01 CIRCUIT BOARD

FOXBORO DM400YL FBM10 120VAC INPUT/OUTPUT MODULE

IMS-9004 S/M CIRCUIT BOARD PRESS

STI ENVIRONECS MA480909 POWER SUPPLY

Filtronic Comtek KS-24163 L1B" Band Receiver Filter Pa

Keyence EX-V02 Inductive Displacement Controller

Omron Sysmac C25K-CDT1A PLC

HP 3253A Analog Stimulus Response Unit

Allen-Bradley 1745-LP151 Ser C SLC 150 Programmable Co

Kulicke and Soffa 00860-1001-000-?02 Board

Kulicke and Soffa 00860-1000-000-?02 board

Kulicke and Soffa 06100-4330-000-?60 Board

Kulicke and Soffa 06100-4100-000-?61 Board

Kulicke and Soffa 06100-4025-000-?60 Board

Kulicke and Soffa 06150-4130-000-?04 Board

Kulicke and Soffa 1483-4029-000-1?4R Board

Kulicke and Soffa 06100-4001-000-?14 Board

Kulicke and Soffa 01482-4031-000-?60 Board

Kulicke and Soffa 06150-4160-000-?61 Board

Kulicke and Soffa 05100-4200-000-?37 Board

Kulicke and Soffa 01471-4000-000-?61 board

Kulicke and Soffa 1483-4033-000-0?3 Board

Kulicke and Soffa 05100-4200-000-?08 Board

Kulicke and Soffa 01471-4000-000-?38 Board

Kulicke and Soffa 06100-4001-000-?13 Board

Kulicke and Soffa 01483-4005-000-?12 Board

Kulicke and Soffa 06150-4160-000-?61R Board

Kulicke and Soffa 05100-4200-000-?25 Board

Kulicke and Soffa 06100-4125-000-?61 REV AF Board

Kulicke and Soffa 00797-4188-000-?70 Board

HP 8502B Transmission/ Reflection Test

Kulice and Soffa 06100-4120-000-?04 Board

Kulicke and Soffa 01483-4005-000-?16 Board

Kulicke and Soffa 01471-4000-000-?41 Board

Kulicke and Soffa 01488-4229-000-?42 Board

Kulicke and Soffa 06100-4100-000-?60 Board

Kulicke and Soffa 02920-4130-000-?61 Board

Kulicke and Soffa 06100-4006-000-?05 Board

Kulicke and soffa 01483-4005-000-?18 Board

Kulicke and Soffa 01483-4005-000-?17 Board

Kulicke and Soffa 01483-4029-000-?14 Board

Kulicke and Soffa 01483-4014-000-?62 Board

Kulicke and Soffa 00797-4188-000-?12 Board

Kulicke and Soffa 01474-4001-000-?81 Board

Kulicke and Soffa 01483-4005-000-?14 Board

Kulicke and Soffa 01474-4001-000-?61 Board

Kulicke and Soffa 00797-4188-000-?71 Board

Kulicke and Soffa 01474-4001-000-?71 Board

Kulicke and Soffa 01482-4031-000-?62 Board

Kulikce and Soffa 06150-4161-000-?62 board

Kulicke and Soffa 06100-4100-000-?70 Board

Kulicke and Soffa 00797-4315-000-?44 Board

BK Precision 835 Capacitance Comparator System

Kulicke and Soffa 01483-4005-000-?13 Board

Kulicke and Soffa 00797-4235-000-?84 Board

Kulicke and Soffa 01474-4001-000-?91 Board

Kulicke and Soffa 01482-4031-000-?15 Board

Kulicke and Soffa 06150-4161-000-?61 Board

Kulicke and Soffa 01488-40333-000?-20 Board

Kulicke and Soffa 01482-4031-000-?60 Board

Kulicke and Soffa 00797-4235-000-?82 Board

Kulicke and Soffa 06100-4125-000-?62 Board

Kulicke and Soffa 01471-4000-000-?17 Board

Kulicke and Soffa 06100-4120-000-?04 Board

Kulicke and Soffa 06100-4001-000-?13 REV AK Board

Kulicke and Soffa 06100-4001-000-?14

Kulicke and Soffa 01741-4000-000-?42 Board

Kulicke and Soffa 02010-4012-000-?04 Board

Kulicke and Soffa 00797-4188-000-?44 Board

Kulicke and Soffa 0210-4012-000-0?3 Board

Kulicke and Soffa 01471-4000-000-?62 Board

Kulicke and Soffa 01483-4035-000-?12 Board

Kulicke and Soffa 01482-4001-000-?05 Board

Kulicke and Soffa 06100-4100-000-?60 Board

Kulicke and Soffa 01471-4000-000-?39 Board

Kulicke and Soffa 01418-4050-001 REV A Board

Kulicke and Soffa 00835-4580-000-?21 Board

Kulicke and Soffa 1418-40B1-0 REV

Kulicke and Soffa 4590-44-1 REV F Board

Genrad 9009-0459-01[A] Board

Genrad 9004-046301E Board

Cincinnati 278802 Centrifual Blower

Siemens SIMATIC TI315 PLC Central Processing Unit

Acme T 2-53014-4S general purpose transformer 240/480V

HYUN HL-514M CPT Leak Repairer

EG&G MVS-2020-10 fiber optic strobe

KEPCO ATE25-4M programmable DC power supply

KEPCO ATE25-4M programmable DC power supply

ADEPT 90402-30023 xy-HRS 023-S101AD Actuator

Stainless Steel Hopper on wheels

NI PCI-6033E High Resolution Multifunction 1/O Board N

Sola CVC 23-23-210-8 Constant Voltage Sine Wave Output

Tektronix 1910 TV/Video NTSC Digital Generator

Tektronix 1910 TV/Video NTSC Digital Generator

FISCHER & PORTER 14E1752

ERDCO 3212-06T5 FLO METER

MODICON AS-B872-100 MODULE

KISTLER-MORSE 710 CONVEYOR MONITOR

AS LIFT CHAIN LARGE 20FT

WHITE RODGERS H02E321B2 THERMOCOUPLE

WHITE RODGERS F80-1308 TUBE ASSEMBLY

TAYLOR TOOLS 79-325131 RELIEF VALVE

65 TRENTON #2A WAX-TAPE

WESCHLER INSTRUMENTS BG281 BARGRAPH METER

PETRO 770 TT PASS VALVE

NTN NAC K16 A93-2469 Bowl Feeder 10"

KOYO JAPAN 6844 DEEP GROOVE BALL BEARING

4 GEMS FS-380 FLOW SWITCH .25GPM

Allen-Bradley P2C-5/15 1785-2T Proccessor Module Serie

Valhalla Scientific 1020A Isolated Remote Interface Mo

KEPCO ATE ATE-25-4M programmable DC power supply

3 Telesciences 310 320 Control Panel Boards

ACME VISIBLE CENTRAC CENTRALIZED RANDOM ACCESS

25 Mercury 32-8M0038610 Fuel Line .315 I.D. 12 Ft

5 Stanley 230-7180WT Framed Sliding Door 72''

LEAR SIEGLER DYNATRON 1100M OPACITY MONITORING SYSTEM

Adept 10332-1100 Rev G Manual Control II Operator

Ohio Electronics 60 Lable Stand Alone Rewinder

WATERS WAT010025 Nova-Pak Silica Column

Spritzdruck DU-Q20 INJECTION PRESSURE LIMITER SWITCH

SKAN-A-MATIC S30108-P REFLECTIVE SCANNERS

GE SB362RG Spectra Busway Breaker 3P/3W 60A

FILTRONIC COMTEK CA032 F1 DIPLEXER L1 FILTER

P&H 79U797 (L) STABILITY MODULE

P&H 79U6D4 (L) BIAS MODULE

SNAP-ON 54135 AIR HOSE 750FT 3/16'' 800PSI

SABINA 7406-1 ARM FB REGULATOR

2 ABB 35620926 DISTRIBUTION BOX

HOFFMAN CSD483610 ENCLOSURE

SOFTROL SYSTEMS SSBUSS1 REVB CONTROL BOARD

4 BUSS T60100-3C T60060-3CRE FUSE HOLDERS

FUJI VFC500A-7W RING COMPRESSOR

SAFRONICS 106345201 REV0004 PULSE TACH FDBK/FOLLOWER

FINCOR 2601 106105702-D 9939 CONTROL

PROLOG PL PWB113473-001 9305 TERMINATION NETWORK CARD

DMC100 GL-2010 CARD REVF

1581.5082 CIRCUIT BOARD

1581.5436 CIRCUIT BOARD

1581.5251 CIRCUIT BOARD

1581.5249 CIRCUIT BOARD

FOXBORO 863DP-M2D2SS INTELLIGENT TRANSMITTER

FOXBORO 870PH-70XA ELECTRONIC TRANSMITTER

FOXBORO 863DP-M2D2CC INTELLIGENT TRANSMITTER

SQUARE D TW120-D 6715 TAB WELD PLATE RESISTOR

HEAVY DUTY CRANE MILL DC CONTACTOR

SQUARE D MXDO-3 DC CONTACTOR 600V

SQUARE D MXDO-1 DC CONTACTOR 600V

TODD T-164-2415R POWER SUPPLY

ABB ASEA 2668 ISY-AK 180-134/1

FOXBORO DM400TR-0B

ADEPT XY-HRS ACTUATOR

UNITED CONTROLS 55 SERIES BRISKHEAT TEMPERATURE CONTROL

2 P&H HARNISCHFEGER 79U16D2 OFF POSTITION BIAS MODULE

BENTLY NEVADA 3300/03-02-00 SYSTEM MONITOR

GE Fanuc IC660EBS100H Analog AC Electrical Module

NUM Memoire 256/768 201716 Memory Board