NI LabVIEW 8.6 Digital Filter Design Toolkit Win32ENG 数字滤波器设计工具包DFDT8.6

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NI LabVIEW 8.6 Digital Filter Design Toolkit Win32ENG 数字滤波器设计工具包DFDT8.6

LabVIEW数字滤波器设计工具包
LabVIEW数字滤波器设计工具包提供了设计、分析和实现数字滤波器所需的交互式工具。
LabVIEW数字滤波器设计工具包是一个LabVIEW附加软件，其内置的交互式设计工具可以帮助您探索经典的滤波器设计。该工具包还提供了各种算法、滤波器拓扑结构以及用于定点与浮点数字滤波器分析工具。对于定点滤波器，您可以建立量化效应的模型，优化数值表示/拓扑结构，并使用自动生成的ANSI C或LabVIEW FPGA代码，将设计部署到数字信号处理器或FPGA上。

DFDT数字滤波器工具包，从2018年版本开始提供64位版的。之前的版本，则只有32位的版本。自2022Q3版开始，LabVIEW专业版集成DFDT工具包，但是仍然有独立安装版本。从2024Q1版开始，则不再提供独立安装包，仅在LabVIEW专业版安装包中包含DFDT工具包。

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LabVIEW 8.6 Digital Filter Design Toolkit
发布日期：2008/6/27
包含版本：8.6完整版，版本号8.6.0
受支持的操作系统：
Windows 2000
Windows XP 32-bit
Windows Vista
语言：English
应用程序位数：32位
校验和：
文件大小: 53862160 字节 (51.37 MB)
修改日期: 2025-03-31 14:04
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SHA1: c73369a527c582ac575f939bf8f50e754e22b2d4
SHA256: 02284800c9228332bdc37331aa36eced9dc982aee11dd80312fe297f0dd4de20
CRC32: 6fb30f92

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LabVIEW 8.6 Digital Filter Design Toolkit Readme

June 2008

This file contains information to introduce you to the LabVIEW 8.6 Digital Filter Design Toolkit. This file also provides you with help resources you can use while working with the toolkit. The file contains the following information that you need to understand.

Overview

New Features

System Requirements

Installation Instructions

Accessing the Help

Finding Examples

Known Issues

Bug Fixes

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Overview

The Digital Filter Design Toolkit 8.6 is the upgrade version of the Digital Filter Design Toolkit 8.2.1. The Digital Filter Design Toolkit provides a collection of digital filter design tools to supplement the LabVIEW Full Development System. The Digital Filter Design Toolkit helps you design digital filters without requiring you to have advanced knowledge of digital signal processing or digital filtering techniques. With the Digital Filter Design Toolkit, you can design, analyze, and simulate floating-point and fixed-point digital filters.

Without prior knowledge about programming in LabVIEW, you can use the Digital Filter Design Express VIs to interact graphically with filter specifications to design appropriate digital filters.

The Digital Filter Design Toolkit provides VIs that you can use to design a digital finite impulse response (FIR) or infinite impulse response (IIR) filter, analyze the characteristics of the digital filter, change the implementation structure of the digital filter, and process data with the digital filter. In addition to the floating-point support, the Digital Filter Design Toolkit provides a set of VIs that you can use to create a fixed-point digital filter model, analyze the characteristics of the fixed-point digital filter, simulate the performance of the fixed-point digital filter, and generate fixed-point C code, integer LabVIEW code, or LabVIEW field-programmable gate array (FPGA) code for a specific fixed-point target.

The Digital Filter Design Toolkit includes VIs for floating-point multirate digital filter design. You can use the VIs to design a floating-point single-stage or multistage multirate filter, analyze the characteristics of the floating-point multirate filter, and process data with the floating-point multirate filter. In addition to the floating-point filter design, the toolkit also provides a set of VIs that you can use to create a fixed-point multirate filter, analyze the characteristics of the fixed-point multirate filter, simulate the behavior of the fixed-point multirate filter, and generate LabVIEW FPGA code from the fixed-point multirate filter for NI-RIO targets.

In addition to the graphical tools for digital filter design, the toolkit also provides MathScript functions that LabVIEW MathScript supports. These MathScript functions enable you to design filters in a text-based environment.

New Features and Changes

• You can perform signal processing and filtering on CompactRIO targets running the Wind River VxWorks real-time operating system (RTOS).
• You can specify the unit of measurement of the delay response in samples or seconds for the DFD Plot Group Delay VI and the DFD Plot Phase Delay VI.
• In the Digital Filter Design Toolkit 8.2.1 and earlier, the Digital Filter Design VIs are on the Addons palette. In the Digital Filter Design Toolkit 8.6, the Digital Filter Design VIs are on the Signal Processing palette.
• The online help includes tutorials on designing floating-point and fixed-point filters. You can access the tutorials by selecting Help»Search the LabVIEW Help from the pull-down menu in LabVIEW. On the Contents tab of the LabVIEW Help, choose Toolkits»Digital Filter Design Toolkit»Digital Filter Design How-To.
  

System Requirements

The computer you are using must meet the minimum system requirements to run the Digital Filter Design Toolkit:

• Windows Vista/XP/2000
• A minimum of 30 MB free of disk space
• LabVIEW 8.6 Full or Professional Development System
  

Note: If you want to use the Digital Filter Design Toolkit to generate LabVIEW FPGA code for a fixed-point digital filter, you must install the LabVIEW FPGA Module and NI-RIO software on the host computer. Ensure that you install the FPGA Module and NI-RIO software before you install the Digital Filter Design Toolkit. If you already installed the Digital Filter Design Toolkit, uninstall the Digital Filter Design Toolkit before installing the FPGA Module and NI-RIO software.

Installation Instructions

Prior to installing the toolkit, verify that the computer meets the following conditions:

• Verify that you installed a compatible version of LabVIEW.
• Verify that the Digital Filter Design Toolkit 8.2.1 or earlier is not installed on the computer.
• Verify that no earlier versions of the Digital Filter Design Toolkit 8.6, including alpha and beta releases, are installed on the computer.
  

You can install all of your LabVIEW products—including LabVIEW and the Digital Filter Design Toolkit—using the LabVIEW 8.6 Platform DVDs. Refer to the LabVIEW DVD Installation Instructions or the LabVIEW Release Notes, which are available in your LabVIEW box, for more information about the LabVIEW Platform DVDs.

Complete the following steps to install the Digital Filter Design Toolkit 8.6 for Windows from the LabVIEW 8.6 Digital Filter Design Toolkit installation CD.

Note  Some virus detection programs interfere with the installer. Disable any automatic virus detection programs before you install. After installation, check your computer for viruses and enable any virus detection programs you disabled.

• Log on as an administrator or as a user with administrator privileges.
• Insert the LabVIEW 8.6 Digital Filter Design Toolkit installation CD and follow the instructions that appear on the screen.
• Activate your LabVIEW products using the NI License Manager.
  

Version 8.2.1 for LabVIEW 7.x or 8.x

You must install the LabVIEW Digital Filter Design Toolkit 8.2.1 to work with LabVIEW versions 7.1 through 8.5.

Caution  Do not install the Digital Filter Design Toolkit 8.2.1 under LabVIEW 8.6.

Complete the following steps to install the Digital Filter Design Toolkit 8.2.1

Note  Some virus detection programs interfere with the installer. Disable any automatic virus detection programs before you install. After installation, check your computer for viruses and enable any virus detection programs you disabled.

• Log on as an administrator or as a user with administrator privileges.
• Insert the LabVIEW 8.6 Digital Filter Design Toolkit installation CD and browse to the LabVIEW_7.1-8.5 directory.
• Double-click setup.exe and follow the instructions that appear on the screen.
  

Uninstallation Instructions

Complete the following steps to uninstall the Digital Filter Design Toolkit.

• Open the Add or Remove Programs dialog box from the Control Panel.
• Select National Instruments Software and click the Change button.
• Under NI Products, select NI LabVIEW Digital Filter Design Toolkit and click the Remove button.
  

Accessing the Help

Refer to the LabVIEW Help, accessible by selecting Help»Search the LabVIEW Help from the pull-down menu in LabVIEW, for information about using the Digital Filter Design Toolkit. On the Contents tab of the LabVIEW Help, choose Toolkits»Digital Filter Design Toolkit. This book contains:

• Concepts—An overview of how to use the Digital Filter Design Toolkit.
• How-To—A step-by-step tutorial on designing floating-point and fixed-point filters using the Digital Filter Design Toolkit.
• VIs—Detailed information about the Digital Filter Design VIs.
• MathScript Functions—Detailed information about the Digital Filter Design MathScript classes of functions and commands that LabVIEW MathScript supports.
  

Finding Examples

LabVIEW examples for the Digital Filter Design Toolkit are located in the labview\examples\Digital Filter Design folder. You can modify an example VI to fit an application, or you can copy and paste from one or more examples into a VI that you create.

You also can find example VIs using the NI Example Finder. Select Help»Find Examples to launch the NI Example Finder. You also can click the arrow on the Open button on the LabVIEW dialog box and select Examples from the shortcut menu to launch the NI Example Finder.

Use the Browse or Search page of the NI Example Finder to find an example VI. In the Browse page, the Digital Filter Design Toolkit examples are located in the Toolkits and Modules»Digital Filter Design folder.

Known Issues

The following items are known issues in the Digital Filter Design Toolkit 8.6.

• The Filter Analysis VIs might take a long time to analyze a filter with a high order.
• The DFD Remez Design VI might take a long time to design an FIR filter with a high order.
• The DFD Least Pth Norm Design VI might take a long time to complete designs that have iterative algorithms.
• The Digital Filter Design Toolkit 8.6 does not allow zero-valued zeroes in the Pole-Zero Placement Express VI. If you specify a zero-valued zero, the Express VI forces the zero-valued zero to a non-zero-valued zero.
• When you design a fixed-point filter, you must configure the quantizers. Each quantizer contains a signed? Boolean that specifies whether to treat the input number as a signed number. The Digital Filter Design Toolkit 8.6 supports signed numbers only.
• The characteristics of a filter might change if numeric errors occur during the conversion between the filter coefficients of different filter structures. When you convert the structure of a filter, the filter with the new structure might be completely different from the original filter. If you encounter this situation, try using a different structure.
• You might need to compile the Digital Filter Design example VIs that demonstrate how to use generated LabVIEW FPGA code in LabVIEW projects.
• The Digital Filter Design Toolkit 8.6 does not generate FPGA code if R series support is not installed for the NI-RIO driver.
  

Bug Fixes

The following items are the IDs and titles of a subset of issues fixed in the LabVIEW 8.6 Digital Filter Design Toolkit. If you have a CAR ID, you can search this list to validate that the issue has been fixed. This is not an exhaustive list of issues fixed in the current version of the Digital Filter Design Toolkit.

Bug Id	Fixed Issue
52219	DFD Get Zero-Pole-Gain.vi does not return correct gain.
88324	During the uninstallation process, you cannot retrieve the uninstalled components by clicking the Cancel button. To repair the Digital Filter Design Toolkit, you can run the setup.exe program from the installation CD.

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Copyright

© 2008 National Instruments Corporation. All rights reserved.

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.

Trademarks

National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks.

Other product and company names mentioned herein are trademarks or trade names of their respective companies.

Patents

For patents covering the National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or ni.com/patents.