LabWindows/CVI Signal Processing Toolkit, Version 7.0.2

Readme File

This file contains installation and programming considerations and changes that are too recent to be included in the LabWindows/CVI Signal Processing Toolkit Help.

Contents

Related Documentation
Minimum System Requirements
Installing LabWindows/CVI
Activating LabWindows/CVI
After Installation
Upgrading from Previous Versions
New Features and Changes
Distributing Applications

Related Documentation

• LabWindows/CVI Signal Processing Toolkit User Manual—Refer to the user manual for information about the Signal Processing Toolkit, the different types of signal processing analyses you can perform with the Toolkit, the theoretical basis for each type of analysis, and the analysis examples provided with the Signal Processing Toolkit. Select Start»Programs»National Instruments»Signal Processing Toolkit for CVI»CVI SPT User Manual to open the Signal Processing Toolkit User Manual.
• LabWindows/CVI Signal Processing Toolkit Help—Refer to the help file for descriptions of the functions included in the LabWindows/CVI Signal Processing Toolkit. These functions are grouped according to the type of analysis they perform. Analysis types include Joint Time–Frequency Analysis, Super–Resolution Spectral Analysis, and Wavelet Analysis. This help file also includes a section that describes the Digital Filter Design utilities used for filtering applications. Select Start»Programs»National Instruments»Signal Processing Toolkit for CVI»CVI SPT Help to access the LabWindows/CVI Signal Processing Toolkit Help.

Minimum System Requirements

The LabWindows/CVI Signal Processing Toolkit requires the following minimum system configuration:

• LabWindows/CVI 8.0 or later
• Microsoft operating systems:
  • Windows 7 (32-bit and 64-bit)
    
    Note: National Instruments is committed to maintaining compatibility with Microsoft Windows technology changes. While most NI products work with Windows 7, NI has become aware of some compatibility issues regarding Windows 7. To learn more about Windows 7 and NI products, refer to the National Instruments Web site at ni.com/info and enter the Info Code windows7.
    
  • Windows Vista (32-bit and 64-bit)
  • Windows XP (32-bit)
  • Windows 2000 Service Pack 3 or later
• 80 MB free disk space

Installing the LabWindows/CVI Signal Processing Toolkit

Complete the following steps to install this toolkit:

1. Log on as an administrator or as a user with administrator privileges, as necessary.
2. Insert the LabWindows/CVI Signal Processing Toolkit media into the disk drive. If the media does not run automatically, open Windows Explorer, right-click the disk drive icon, and select AutoPlay.
   
   Note:  You also can install the LabWindows/CVI Signal Processing Toolkit from the LabWindows/CVI Platform DVD.
3. On installation startup, the National Instruments LabWindows/CVI Signal Processing Toolkit screen appears. Click Install NI LabWindows/CVI Signal Processing Toolkit.
4. In the User Information panel, enter your name and organization and the serial number found on your Certificate of Ownership card. LabWindows/CVI uses this serial number when you run the NI Activation Wizard.
5. Continue to follow the instructions on the screen.

Activating the LabWindows/CVI Signal Processing Toolkit

The first time you launch LabWindows/CVI after installing the LabWindows/CVI Signal Processing Toolkit, you are prompted to activate the toolkit. Complete the following steps to activate the LabWindows/CVI Signal Processing Toolkit.

1. Select the Automatically activate through a secure Internet connection option and click Next. Your computer must be connected to the Internet for this option to work. If you do not have Internet access on your computer, refer to the LabWindows/CVI Release Notes.
2. The Serial Number option is populated with the number you entered during installation. Click Next.
3. Fill in the necessary information and click Next.
4. Check the option if you would like to receive a confirmation email of your activation and click Next.
5. After a brief moment, you should receive a message indicating whether the LabWindows/CVI Signal Processing Toolkit has been activated or not. Enter or verify your serial number. Click Next.
6. Continue to follow the instructions on the screen.
7. When you successfully activate, click Finish. LabWindows/CVI displays a window indicating when this license expires.

For more information about activation, refer to the LabWindows/CVI Release Notes.

Note  To activate the LabVIEW Advanced Signal Processing Toolkit and the LabVIEW Digital Filter Design Toolkit, you can request the installation media, which includes the serial number, from the National Instruments Web site.

After Installation

You can find example programs in the following location:

• LabWindows/CVI 8.1.1 and Earlier—Examples are located in \Program Files\National Instruments\CVIx.x\Signal Processing\samples.
• LabWindows/CVI 8.5 and Later—On Windows 7/Vista, examples are located in \Users\Public\Documents\National Instruments\CVI\Samples\Signal Processing. On Windows 2000/XP, example programs are located in \Documents and Settings\All Users\Documents\National Instruments\CVI\Samples\Signal Processing.

Upgrading from Previous Versions

You might encounter the following compatibility issues when you upgrade from previous versions of the toolkit to 7.0.2.

Functions Name Changes

The following function names changed in version 7.0 of the toolkit.

If your applications developed with version 6.0 use the functions listed in table above, National Instruments recommends that you use the corresponding version 7.0.x functions.

First and Second Derivative Extension Methods Replaced by Periodic and Spline

Periodic and spline replace first derivative and second derivative as choices for the extension parameter in the JTFA and wavelet analysis functions. The first derivative and second derivative extension methods are still supported in Signal Processing Toolkit 7.0. However, the first derivative and second derivative extension methods are obsolete and not documented in version 7.0. The first derivative and second derivative extension methods might not be supported in the next release of the Signal Processing Toolkit.

num of freq bins Parameter of the SptRealSTFTSpectrogram Function

In version 6.0, the winInfo->N parameter of the SptRealSTFTSpectrogram function specified the column size of the output spectrogram. The column size of the output spectrogram equaled winInfo->N. In Signal Processing Toolkit 7.0, the winInfo->N parameter of the SptRealSTFTSpectrogram specifies the number of frequency bins to observe the input signal in the joint time-frequency domain in terms of a normalized frequency range of the time-frequency representation from DC to 1.0. In version 7.0, the column size of the output spectrogram equals (winInfo->N)/2.

If you used the functions listed previously in applications developed with version 6.0 of the toolkit, you might need to change the size of the memory allocation for the 2D outputs. Refer to the LabWindows/CVI Signal Processing Toolkit Help for information about individual functions.

Memory Allocation for 2D Outputs

The equations used to compute the row size of the 2D output of the following functions changed in version 7.0 of the toolkit:

• SptRealSTFTSpectrogram
• SptCxSTFTSpectrogram
• SptRealSTFT
• SptCxSTFT
• SptRealFastGaborSpectrogram
• SptCxFastGaborSpectrogram

If you used the functions listed previously in applications developed with version 6.0 of the toolkit, you might need to change the size of the memory allocation for the 2D outputs. Refer to the LabWindows/CVI Signal Processing Toolkit Help for information about individual functions.

SptRealSTFTSpectrogram, SptCxSTFTSpectrogram, SptRealSTFT, and SptCxSTFT

In version 6.0, the row size of the 2D output of the SptRealSTFTSpectrogram, SptCxSTFTSpectrogram, SptRealSTFT, and SptCxSTFT functions was computed using the following equation.

row size = floor(len/winInfo->dM).

In Signal Processing Toolkit 7.0, the row size of the 2D output of the SptRealSTFTSpectrogram, SptCxSTFTSpectrogram, SptRealSTFT, and SptCxSTFT functions is computed using the following equation.

row size = floor(len/winInfo->dM) + 1.

SptRealFastGaborSpectrogram and SptCxFastGaborSpectrogram

In version 6.0, the row sizes of the SptRealFastGaborSpectrogram and SptCxFastGaborSpectrogram functions were computed using the following equation.

row size = floor(floor(len/analysisWinInfo->dM) × analysisWinInfo->dM/timeInterval).

In Signal Processing Toolkit 7.0, the row sizes of the SptRealFastGaborSpectrogram and SptCxFastGaborSpectrogram functions are computed using the following equation.

row size = floor(floor(len/analysisWinInfo->dM + 1) × analysisWinInfo->dM/timeInterval).

Error Codes

Signal Processing Toolkit 7.0 contains a new set of error codes. Refer to the LabWindows/CVI Signal Processing Toolkit Help for information about the error codes.

New Features and Changes in the LabWindows/CVI Signal Processing Toolkit 7.0.x

• The Off-line JTFA application in the NI SPT Start-Up Kit can load and analyze a complex signal that is saved as a two-column spreadsheet file.
• The Off-line JTFA application in the NI SPT Start-Up Kit can magnify the time-frequency plot and print or save the plot as JPEG file.

Distributing Applications Developed with the Signal Processing Toolkit

You need to install the following components on the target machine to distribute LabWindows/CVI applications developed with the Signal Processing Toolkit:

• LabWindows/CVI Run-Time Engine
• SPT Run-Time Engine—The installer and merge modules for the SPT Run-Time Engine are located in the Run-Time folder on the Signal Processing Toolkit 7.0.2 installation CD. Note: If the Signal Processing Toolkit 7.0.2 is installed on the target machine, you do not have to install the toolkit Run-Time Engine.

Copyright

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Patents

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