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首页NI Multisim用户手册:电路设计与模拟工具详解
NI Multisim用户手册:电路设计与模拟工具详解
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更新于2024-07-21
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Multisim用户手册是National Instruments电路设计套件的一部分,这套软件包是电子设计自动化(EDA)工具的重要组件。它专注于电路板设计流程中的关键步骤,包括电路图绘制(schematic capture)、模拟仿真(simulation)以及与后续步骤,如PCB布局(PCB layout),的衔接。Multisim专为工程师和设计师提供直观易用的界面,让他们能够快速创建、测试和优化电路设计。
该手册详细介绍了如何在Multisim中进行电路设计,包括元件库管理、原理图布局技巧、电路连接和网络分析。用户可以利用其丰富的组件库,包括模拟、数字、电源和信号处理元件,来构建各种复杂的电路系统。此外,Multisim还支持高级功能,如波形查看、时序分析、电源完整性检查,以及电源噪声分析,以确保设计的可靠性和性能。
在模拟阶段,用户可以设置参数,调整电压、电流、频率等,观察并分析电路的行为。这对于理解和预测真实世界中的设备工作情况至关重要。通过仿真结果,设计者可以迅速识别潜在问题,如电路稳定性、器件过载或信号传输延迟等,并作出相应的改进。
PCB布局部分则展示了如何将电路图转化为实际的印刷电路板(PCB)设计,这涉及到走线规则、封装选择、热管理系统等因素。Multisim与Cadence或其他PCB设计软件的接口,使得整个设计流程无缝对接,提高了设计效率。
手册还包含了故障排查和问题解决策略,以帮助用户解决在使用过程中可能遇到的技术难题。同时,它提供了全面的在线帮助和支持,包括视频教程、知识库和技术论坛,以确保用户始终能获取最新的技术支持和产品信息。
Multisim用户手册是一份详尽的指南,覆盖了从电路设计构思到实现的各个环节,对于任何希望在电子设计领域运用Multisim进行高效工作的专业人士来说,是不可或缺的参考资料。无论是初学者还是经验丰富的工程师,都可以从中找到所需的专业指导和实用技巧。
Contents
© National Instruments Corporation xvii NI Multisim User Manual
Measurement Probe ......................................................................................................9-37
Measurement Probe Settings ..........................................................................9-37
Dynamic Probe Settings....................................................................9-37
Static Probe Settings ........................................................................9-38
Using the Dynamic Measurement Probe ........................................................9-40
Using the Static Measurement Probe .............................................................9-41
Four-Channel Oscilloscope ...........................................................................................9-43
Four-channel Oscilloscope Settings ................................................................9-44
Viewing Four-channel Oscilloscope Results...................................................9-47
Connecting the Four-channel Oscilloscope.....................................................9-50
Frequency Counter.........................................................................................................9-50
Using the Frequency Counter..........................................................................9-51
IV Analyzer....................................................................................................................9-53
Using the IV Analyzer.....................................................................................9-54
Simulate Parameters Dialog Box .....................................................9-57
Reviewing IV Analyzer Data ..........................................................................9-61
Agilent Simulated Instruments ......................................................................................9-63
Agilent Simulated Function Generator............................................................9-63
Supported Features............................................................................9-63
Features Not Supported.....................................................................9-64
Using the Agilent Function Generator .............................................9-64
Agilent Simulated Multimeter.........................................................................9-65
Supported Features............................................................................9-65
Features Not Supported.....................................................................9-65
Using the Agilent Multimeter ...........................................................9-66
Agilent Simulated Oscilloscope ......................................................................9-66
Supported Features............................................................................9-66
Features Not Supported.....................................................................9-68
Using the Agilent Oscilloscope ........................................................9-68
Tektronix Simulated Instruments ..................................................................................9-69
Tektronix Simulated Oscilloscope .................................................................9-69
Supported Features............................................................................9-69
Features Not Supported.....................................................................9-71
Using the Tektronix Oscilloscope.....................................................9-72
Voltmeter ......................................................................................................................9-72
Using the Voltmeter ........................................................................................9-72
Ammeter .......................................................................................................................9-73
Using the Ammeter .........................................................................................9-74
Current Probe ................................................................................................................9-74
Current Probe Properties ................................................................................9-75
LabVIEW Instruments ..................................................................................................9-78
System Requirements .....................................................................................9-79
Sample LabVIEW Instruments .......................................................................9-80
Microphone ......................................................................................9-80
Speaker .............................................................................................9-81
Contents
NI Multisim User Manual xviii ni.com
Signal Analyzer ............................................................................... 9-81
Signal Generator .............................................................................. 9-82
Streaming Signal Generator ............................................................. 9-82
LabVIEW Instruments Toolbar ....................................................... 9-83
Creating a LabVIEW Instrument .................................................................... 9-83
Building a LabVIEW Instrument ................................................................... 9-86
Installing a LabVIEW Instrument................................................................... 9-86
Guidelines for Successfully Creating a LabVIEW Instrument ...................... 9-86
Chapter 10
Analyses
Introduction to Multisim Analyses ............................................................................... 10-1
Viewing the Analysis Results: Grapher ....................................................................... 10-2
Working with Pages on the Grapher ............................................................... 10-6
Working with Graphs ..................................................................................... 10-7
Grids and Legends ........................................................................... 10-7
Cursors ............................................................................................. 10-8
Cursor Pop-up Menu ....................................................................... 10-10
Zoom and Restore............................................................................. 10-11
Title .................................................................................................. 10-11
Axes .................................................................................................. 10-12
Traces ............................................................................................... 10-13
Merging Traces ................................................................................ 10-14
Select Pages dialog box ................................................................... 10-14
Graph Pop-up Menu ........................................................................ 10-15
Viewing Charts .............................................................................................. 10-15
Cut, Copy and Paste ....................................................................................... 10-16
Opening Files .................................................................................................. 10-17
Saving Files..................................................................................................... 10-17
Print and Print Preview .................................................................................. 10-19
Adding Traces from the Latest Simulation Results ....................................... 10-20
Working with Analyses ................................................................................................. 10-21
General Instructions ....................................................................................... 10-22
Analysis Parameters Tab ................................................................................ 10-22
Output Tab ..................................................................................................... 10-23
Choosing How to Handle Output Variables .................................... 10-23
Filtering the Variable Lists .............................................................. 10-24
Adding Parameters to the Variable List .......................................... 10-24
Selecting Variables to Save ............................................................. 10-25
Adding Analysis Expressions ........................................................................ 10-26
Analysis Options Tab ..................................................................................... 10-28
Summary Tab ................................................................................................. 10-29
Incomplete Analyses ....................................................................................... 10-29
Contents
© National Instruments Corporation xix NI Multisim User Manual
DC Operating Point Analysis .......................................................................................10-30
Setting up and Running DC Operating Point Analysis ...................................10-30
Setting DC Operating Point Analysis Parameters ............................10-30
Sample Circuit.................................................................................................10-31
Troubleshooting DC Operating Point Analysis Failures.................................10-32
Circuit Failure Example ....................................................................10-33
Trouble-shooting Techniques ...........................................................10-34
AC Analysis...................................................................................................................10-35
Setting AC Analysis Frequency Parameters ...................................................10-36
Transient Analysis ........................................................................................................10-37
Setting Transient Analysis Parameters ...........................................................10-38
Troubleshooting Transient Analysis Failures .................................................10-40
Fourier Analysis.............................................................................................................10-40
Setting Fourier Analysis Parameters ...............................................................10-41
Noise Analysis ..............................................................................................................10-44
Setting Noise Analysis Parameters..................................................................10-45
Noise Analysis Example..................................................................................10-48
Distortion Analysis ........................................................................................................10-50
Multisim Approach..........................................................................................10-51
Preparing the Circuit for Distortion Analysis .................................................10-51
Understanding the Distortion Analysis Options .............................................10-52
Distortion Analysis for Harmonic Distortion .................................................10-53
Distortion Analysis for Intermodulation Distortion .......................................10-55
DC Sweep Analysis ......................................................................................................10-57
Setting DC Sweep Analysis Parameters..........................................................10-57
DC Sweep Analysis Examples ........................................................................10-59
DC and AC Sensitivity Analyses ..................................................................................10-62
Sensitivity Analysis Parameters ......................................................................10-62
Setting Up and Running Sensitivity Analysis ................................................10-64
Parameter Sweep Analysis.............................................................................................10-67
Setting Parameter Sweep Analysis Parameters ..............................................10-67
Parameter Sweep Analysis – Example ...........................................................10-70
Temperature Sweep Analysis ........................................................................................10-74
Setting Temperature Sweep Analysis Parameters ..........................................10-75
Transfer Function Analysis............................................................................................10-76
Setting Transfer Function Analysis Parameters .............................................10-77
Examples of Transfer Function Analysis .......................................................10-79
Worst Case Analysis .....................................................................................................10-82
Setting Tolerance Parameters..........................................................................10-83
Setting Worst Case Analysis Parameters ........................................................10-84
Worst Case Analysis Example ........................................................................10-85
Pole Zero Analysis ........................................................................................................10-87
Multisim Approach..........................................................................................10-90
Setting Pole Zero Analysis Parameters ...........................................................10-91
Contents
NI Multisim User Manual xx ni.com
Running Pole Zero Analysis .......................................................................... 10-92
Monte Carlo Analysis ................................................................................................... 10-93
Uniform Distribution....................................................................................... 10-94
Gaussian Distribution...................................................................................... 10-94
Setting Up and Running Monte Carlo Analysis ............................................. 10-96
Entering a Component Tolerance .................................................... 10-96
Specifying Monte Carlo Analysis Parameters ................................. 10-97
Monte Carlo Analysis Example ...................................................................... 10-99
Setting up the Sample Monte Carlo Analysis .................................. 10-100
Simulation Results............................................................................ 10-104
Trace Width Analysis ................................................................................................... 10-107
Multisim Approach ......................................................................................... 10-109
Sample Trace Width Analysis......................................................................... 10-111
RF Analyses................................................................................................................... 10-112
Nested Sweep Analyses ................................................................................................ 10-113
Batched Analyses ......................................................................................................... 10-113
User Defined Analyses ................................................................................................. 10-115
Creating and Simulating a SPICE Netlist ...................................................... 10-115
Importing the SPICE netlist into Multisim .................................................... 10-116
Plotting Two Nodes Using the Tran Statement ............................................. 10-117
Custom Analysis Options Dialog Box .......................................................................... 10-117
Global Tab ...................................................................................................... 10-118
DC Tab ........................................................................................................... 10-120
Transient Tab ................................................................................................. 10-122
Device Tab ..................................................................................................... 10-124
Advanced Tab ................................................................................................ 10-125
Chapter 11
Postprocessor
Introduction to the Postprocessor .................................................................................. 11-1
Using the Postprocessor ................................................................................................ 11-2
Basic Steps ..................................................................................................... 11-2
Using the Default Analysis............................................................... 11-7
Creating Multiple Traces ................................................................. 11-8
Working with Pages, Traces, Graphs and Charts .......................................... 11-8
Postprocessor Variables................................................................................................. 11-9
Available Postprocessor Functions ............................................................................... 11-9
Contents
© National Instruments Corporation xxi NI Multisim User Manual
Chapter 12
Reports
Bill of Materials .............................................................................................................12-1
Using the BOM Report....................................................................................12-3
Component Detail Report ..............................................................................................12-5
Using the Component Detail Report ..............................................................12-5
Netlist Report.................................................................................................................12-6
Using the Netlist Report ..................................................................................12-6
Schematic Statistics Report ...........................................................................................12-7
Using the Schematic Statistics Report.............................................................12-8
Spare Gates Report ........................................................................................................12-9
Using the Spare Gates Report..........................................................................12-9
Model Data Report ........................................................................................................12-10
Using the Model Data Report..........................................................................12-10
Cross Reference Report .................................................................................................12-11
Using the Cross Reference Report ..................................................................12-11
Variants Filter Dialog Box ............................................................................................12-12
Chapter 13
Transfer/Communication
Introduction to Transfer/Communication .....................................................................13-1
Exporting to PCB layout ...............................................................................................13-1
Transferring from Multisim to Ultiboard for PCB Layout..............................13-2
Transfering to Other PCB Layout Packages ..................................................13-3
Forward Annotation.......................................................................................................13-4
Back Annotation ............................................................................................................13-5
Exporting Simulation Results .......................................................................................13-5
Exporting to MathCAD ...................................................................................13-5
Exporting to Excel...........................................................................................13-6
Saving to a Measurement File .........................................................................13-7
Exporting a Netlist .........................................................................................................13-8
Importing Files with Other Formats .............................................................................13-8
Opening an Electronics Workbench 5 File .....................................................13-9
Opening an Ulticap File ..................................................................................13-9
Importing a SPICE or Cadence
®
PSpice
®
Netlist ...........................................13-10
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