PSpice A/D官方16.6版使用指南

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《PSpice A/D官方使用手册》是一份详尽的技术指南，适用于PSPICE仿真软件的高级用户。该手册适用于产品版本16.6，发布于2012年10月，并在2014年1月进行了更新。版权归属于Cadence Design Systems, Inc., 一家总部位于美国加州圣何塞的公司，享有该软件技术的独家许可和版权。手册中还包括Apache Software Foundation、Sun Microsystems、Free Software Foundation等机构的部分许可内容，这些公司在算法、编程语言和技术上为PSPICE A/D提供了支持。 PSPICE A/D是一个强大的电子电路仿真工具，它允许工程师进行模拟分析，包括电压、电流、功率和频率响应等。该手册详细介绍了如何设置模拟电路，使用各种元件模型（如电阻、电容、晶体管等），以及如何配置信号发生器、示波器和数字/模拟转换器(D/A)模块。A/D部分着重于模拟数字信号的处理，包括采样、量化和编码过程，这对于理解和设计信号处理系统至关重要。此外，手册还涵盖了基本的仿真流程，如创建电路图、设置参数、运行仿真、分析结果和调试技巧。它可能包含了误差分析、噪声建模、采样频率选择、量化级数设定等相关知识，这些都是数字信号处理中不可或缺的部分。对于那些希望深入了解PSPICE A/D的用户，这份官方文档不仅提供了深入的技术细节，而且包含了最佳实践和常见问题解答，以便于用户解决实际工作中的问题。无论是初学者还是经验丰富的工程师，都可以从中获益匪浅，提升他们的电路仿真能力和数字信号处理能力。请注意，由于部分内容涉及具体的许可证信息和个体贡献者，例如UMFPACK的版权归属，手册可能也包含了关于数值线性代数库和算法的详细信息。这些部分对于理解软件的内部工作原理和优化性能也是关键。《PSpice A/D官方使用手册》是一本综合性的参考书籍，是学习和掌握PSPICE A/D软件及其在电子工程领域应用的必备资料。

PSpice Reference Guide

Before you begin

October 2012 16 Product Version 16.6

TAN(x) tan(x)

x in radians

TANH(x)

hyperbolic tangent

of x

x in radians

TABLE

(x,x

2,...

)

Result is the y value corresponding to x, when

all of the x

points are plotted and

connected by straight lines. If x is greater than

the max x

, then the value is the y

associated

with the largest x

. If x is less than the smallest

, then the value is the y

associated with the

smallest x

zero(expression

)

The expression is evaluated and the result is

ignored. Function returns the value 0.

Example:

EE15 12 0 VALUE=+

{ZERO(BREAK(time+10e-6))}

one(expression)

The expression is evaluated and the result is

ignored. Function returns the value 1.

ceil(arg)

Returns an integer value.

The argument for this function should be a

numeric value or an expression that evaluates

to a numeric value. If arg is an integer, the

return value is equal to the argument value. If

arg is a non-integer value, the return value is

the nearest integer greater than the argument

value.

Example:

ceil(PI)=4

ceil(5)=5

ceil(5.4)=6

Function

Meaning Comments

PSpice Reference Guide

Before you begin

October 2012 19 Product Version 16.6

each run. It can also be used to automatically create hardcopy output at the end of very long

(such as overnight) simulation runs.

Creating and editing command files

You can create your own command file using a text editor (such as Notepad). In PSpice and

Stimulus Editor, you can choose Log Commands from the File menu (see Log files on

page 20 for an example) to record a list of transactions in a log file, then choose Run

Commands from the File menu to run the logged file.

Note: After you activate cursors (from the Tools menu, choose Cursor), any mouse or

keyboard movements that you make for moving the cursor will not be recorded in the

command file.

If you choose to create a command file using a text editor, note that the commands in the

command file are the same as those available from the keyboard with these differences:

■ The name of the command or its first capitalized letter can be used.

■ Any line that begins with an * is a comment.

■ Blank lines are ignored, therefore, they can be added to improve the readability of the

command file.

■ The commands @CR, @UP, @DWN, @LEFT, @RIGHT, and @ESC are used to

represent the <Enter>, <↑ >, <↓>, <←>, <→>, and <Esc> keys, respectively.

■ The command PAUSE causes PSpice, the Model Editor, or Stimulus Editor to wait until

any key on the keyboard is pressed. In the case of PSpice, this can be useful to examine

a waveform before the command file draws the next one.

The commands are one to a line in the file, but comment and blank lines can be used to make

the file easier to read.

Assuming that a waveform data file has been created by simulating the circuit example.dsn,

you can manually create a command file (using a text editor) called example.cmd which

contains the commands listed below. This set of commands draws a waveform, allows you to

look at it, and then exits PSpice.

* Display trace v(out2) and wait

Trace Add

v(out2)

Pause

* Exit Probe environment

File Exit

See Simulation command line specification format on page 23 and Specifying simulation

command line options on page 25 for specifying command files on the simulation command

PSpice Reference Guide

Before you begin

October 2012 20 Product Version 16.6

line. See Simulation command line specification format on page 23 and Specifying simulation

command line options on page 25 for details on specifying the /C or -c option for PSpice.

Note: The Search Commands feature is a Cursor option for positioning the cursor at a

particular point. You can learn more about Search Commands by consulting PSpice Help.

Log files

Instead of creating command files by hand, using a text editor, you can generate them

automatically by creating a log file while running PSpice, the Model Editor, or Stimulus Editor.

While executing the particular package, all of the commands given are saved in the log file.

The format of the log file is correct for use as a command file.

To create a file in PSpice or Stimulus Editor, from the File menu, choose Log Commands and

enter a log file name. This turns logging on. Any action taken after starting Log Commands

is logged in the named file and can be run in another session by choosing Run Commands.

Note: Some comands might not be added to the log file.

You can also create a log file for PSpice, Stimulus Editor, or the Model Editor by using the /l

or -l option at the command line. For example:

PSPICE /L EXAMPLE.LOG

Of course, you can use a name for the log file that is more recognizable, such as acplots.cmd

(to PSpice and Stimulus Editor, the file name is any valid file name for your computer).

Note: You can use either (/) or (-) as separators, and file names can be in upper or lower

case.

Editing log files

After PSpice, the Model Editor, or Stimulus Editor is finished, the log file is available for editing

to customize it for use as a command file. You can edit the following items:

■ Add blank lines and comments to improve readability (perhaps a title and short

discussion of what the file does).

■ Add the Pause command for viewing waveforms before proceeding.

■ Remove the Exit command from the end of the file, so that PSpice, the Model Editor, and

Stimulus Editor do not automatically exit when the end of the command file is reached.

You can add or delete other commands from the file or even change the file name to be more

recognizable. It is possible to build onto log files, either by using your text editor to combine

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