Additional Spreadsheet Columns

If the VES-3600 Advanced Signal Processing option is authorized by your ME'scope license, the following commands are enabled in the Data Block and Shape Table windows
Check Help | About to verify authorization of this option.

The following additional columns are enabled in the M#s spreadsheets in Data Blocks, Acquisition windows, and Shape Tables.

Data Block & Acquisition M#s Spreadsheet Columns

Shape Table M#s Spreadsheet Columns

Extra Data Block M#s Spreadsheet Column With Signal Processing Option.

Linear Power Column

Converts all (or selected) M#s between Linear & Power engineering units (EU & EU^2).

Input Output Column

Defines an measurement either as an Input, an Output, or Both an Input and an Output to a test structure. A Cross channel measurement such as an FRF , is calculated between two DOFs of a structure and is designated as Cross in the Input Output column of the M#s spreadsheet.

IMPORTANT:  Input, Output, Cross, and Both designations are used by the Transform | Spectra, Transform | MIMO and Transform | ODS FRFs commands.

Peak RMS Pk-Pk Column

Scales all (or selected)  M#s using the following scale factors.

Amplitude Scaling Choice

Trace Is Multiplied By

Peak

1.0

Pk-Pk

2.0

RMS

0.707

FFT Column

Defines the FFT (or DFT spectrum) of each M# as either One Sided or Two Sided.

Window Column

Describes the type of time domain window applied to all (or selected) M#s.

Window Value Column

Contains the window value corresponding to the window listed in the Window column.

Window Correction Column

Used together with the Window and Window Value columns to correct the effects of time domain windowed from calculated spectra.

Windowing Examples

The figure below contains the spectra of 3 sine wave (narrow band) signals, and three random (wide band) signals.

Notice that all of the magnitudes of the Sine Wave spectra (on the left side) are the same, even though each has been windowed with a different time domain window.  Notice also that all of the magnitudes of the Random spectra (on the right side) are approximately the same, even though each has been windowed with a different time domain window.

Narrow Band and Wide Band Spectra Amplitude Corrected for Windowing.

The figure below shows that the Power in all of the Sine Wave spectra is the same, since they have been Narrow Band corrected.  Likewise, the Power in all of the Random spectra is the same, since they have been Wide Band corrected.

Narrow Band and Wide Band Spectra Power Corrected for Windowing.

Z-Axis Column

This column is used to enter a Z-Axis text label for all (or selected) M#s.

Selecting M#s for animation