M#s Menu

M#s | Select Menu

The commands in this menu are used to select and un-select M#s.

Most Data Block window commands operate on all (or selected) M#s.

• A selected M# is displayed with a green background in the graphics area, and its Select button is depressed in the M#s spreadsheet.

• Right click on the graphics area or M#s spreadsheet to execute these commands from the drop down menu.

Data Block Showing Four Selected M#s.

Select | Select By...

When this command executed, a dialog box will open containing a drop down list of options for selecting M#s.

• Choose a method from the Select By drop down list

• Choose items from the selection list below it

• Hold down the Shift or Ctrl key to make multiple selections

• Click on Select to select the M#s

Select M#s By Dialog box.

Start and Skip M#s

Opens another dialog box wherein you can enter a Starting M# M# is an abbreviation for Measurement Number. Each measurement function in a Data Block or Acquisition window has a unique M#. Also, each shape component in a Shape Table window has a unique M#. Each M# in the connected Animation Source must be Assigned to a DOF of the structure model in order to display shapes from the Source in animation. Each un-measured DOF on the model is animated by creating an M# Interpolation using nearby Measured and Fixed DOFs. and a Skip M#s (number of M#s to skip over) for selecting M#s.

• The default values are Starting M# = 1, and Skip M#s = 0.

By Units

Selects M#s by their Engineering Units.

• Engineering Units are listed in the Units column in the M#s spreadsheet.

By DOF

Selects M#s by their DOF;

DOF = Roving DOF : Reference DOF [Measurement Set]

• Single channel M#s have only a Roving DOF.

• Cross channel M#s have Roving & Reference DOFs.

• Measurement Set numbers are used when data is acquired in multiple measurement sets.

• DOFs are displayed in the DOFs column in the M#s spreadsheet

By Roving DOF

Selects M#s by their Roving DOF;

DOF = Roving DOF : Reference DOF

By Reference DOF

Selects M#s by their Reference DOF;

DOF = Roving DOF : Reference DOF

By Point

Selects M#s by their Roving DOF Point number;

DOF = Roving (Point Number & Direction) : Reference DOF.

By Direction

Selects M#s by their Roving direction;

DOF = Roving (Point Number & Direction) : Reference DOF.

By Rectangular Matrix DOFs

Selects M#s that form a rectangular matrix of rows & columns based on their DOFs.

• Roving DOFs correspond to rows of the rectangular matrix.

• Reference DOFs correspond to columns of the rectangular matrix.

By Measurement Type

Selects M#s by their Measurement Type.

• Measurement Types are listed in the Measurement Type column in the M#s spreadsheet.

By Measurement Set

Selects M#s by their Measurement Set number;

DOF = Roving DOF : Reference DOF [Measurement Set]

By Data Type

Selects M#s by their Data Type.

• Data Types are listed in the Data Type column in the M#s spreadsheet.

By Label

Selects M#s by their text Label.

• Labels are listed in the Label column in the M#s spreadsheet.

By Input Output

Selects M#s by their Input Output property

• Input Output is listed in the Input Output column in the M#s spreadsheet.

By Source Name

Selects M#s by their Source name.

• Source names are listed in the Source Name column in the M#s spreadsheet.

By Date/Time

Selects M#s by their Date/Time.

• Date/Times are listed in the Date/Time column in the M#s spreadsheet.

By Z Axis

Selects M#s by their Z-Axis text label.

• The Z Axis labels are listed in the Z-Axis column in the M#s spreadsheet.

Select | Select All

Selects all M#s.

Select | Invert Selection

Inverts the M# selection.

• All selected M#s are un-selected, and all un-selected M#s are selected.  

Select | Select None

Un-selects all M#s.

M#s | Sort Menu

The commands is this menu are used to sort (or re-order) the measurements in a Data Block.

• Each measurement has a unique M#, which is its row in the M#s spreadsheet

M#s are important in a Data Block because the M# Links in a connected structure model use M#s to measurement data to animate.

Sort | Sort By...

When executed, a dialog box will open containing a list of options to sort by,

• Choose a sorting option from the Sort By drop down list

• Choose items from the Select From list, or check Select All to choose all items in the Select From list

• Use Ascending, Descending, and the Remove button to obtain the desired Sort Using list

• Click on Sort to sort the M#s

Sort M#s By Dialog box.

By Units

Sorts M#s by their Engineering Units.

• Engineering Units are listed in the Units column in the M#s spreadsheet.

By DOF

Sorts M#s by their DOF;

DOF = Roving DOF : Reference DOF [Measurement Set]

• Single channel measurements have only a Roving DOF.

• Cross channel measurements have  Roving & Reference DOFs.

• Measurement Set numbers are used when data is acquired in multiple measurement sets.

• DOFs are displayed in the DOFs column in the M#s spreadsheet.

By Roving DOF

Sorts M#s by their Roving DOF;

DOF = Roving DOF : Reference DOF

By Reference DOF

Sorts M#s by their Reference DOF;

DOF = Roving DOF : Reference DOF

By Point Number

Sorts M#s by their Roving DOF Point number;

DOF = Roving (Point Number & Direction) : Reference DOF.

By Direction

Sorts M#s by their Roving direction; of measurement

DOF = Roving (Point Number & Direction) : Reference DOF.

By Rectangular Matrix DOFs

Sorts M#s that form a rectangular matrix of rows & columns based on their DOFs.

• Roving DOFs correspond to rows of the rectangular matrix.

• Reference DOFs correspond to columns of the rectangular matrix.

By Measurement Type

Sorts M#s by their Measurement Type.

• Measurement Types are listed in the Measurement Type column in the M#s spreadsheet.

By Measurement Set

Sorts M#s by their Measurement Set number;

DOF = Roving DOF : Reference DOF [Measurement Set]

By Data Type

Sorts M#s by their Data Type.

• Data Types are listed in the Data Type column in the M#s spreadsheet.

By Label

Sorts M#s by their text Label.

• Labels are listed in the Label column in the M#s spreadsheet.

By Input Output

Sorts M#s by their Input Output property.

• Input Output is listed in the Input Output column in the M#s spreadsheet.

By Source Name

Sorts M#s by their Source name.

• Source names are listed in the Source Name column in the M#s spreadsheet.

By Date/Time

Sorts M#s by their Date/Time.

• Date/times are listed in the Date/Time column in the M#s spreadsheet.

By Z Axis

Sorts M#s by their Z-Axis text label.

• The Z Axis labels are listed in the Z-Axis column in the M#s spreadsheet.

Sort | Manual Sort

Enables manual sorting of measurements by selecting them in a desired order.  When this command is executed, a dialog box is opened with instructions for selecting M#s.  

Dialog Prior to a Manual Sort of M#s.

• Hold down the Ctrl key and click on each graph in the desired order

• Or depress the Select M# buttons in the desired order, in the first column in the M#s spreadsheet

After all of the M#s have been selected,

• Execute this command again to sort the measurements in the order in which they were selected

• All un-selected M#s will follow the selected M#s in the new sorted order in the M#s spreadsheet

M#s | Move Selected Up

The selected M#s are moved upward in the M#s spreadsheet with each execution of this command. This command can be used to manually sort the order of the M#s so that the properties of measurements of interest are listed higher in the M#s spreadsheet.

M#s | Move selected Down

The selected M#s are moved downward in the M#s spreadsheet with each execution of this command. This command can be used to manually sort the order of the M#s so that the properties of measurements of interest are listed lower in the M#s spreadsheet.

\M#s | Real

Displays real measurement data or the Real Part of complex data.

Data Block Window Showing Real Part of an FRF.

M#s | Imaginary

Displays the Imaginary Part of complex measurement data.

Data Block Window Showing Imaginary Part of an FRF.

M#s | Magnitude

Displays the magnitude of the measurement data.

Real & Imaginary Parts on the Complex Plane.

Data Block Window Showing Log Magnitude of an FRF.

Linear, Log or dB

Magnitudes can be displayed in Linear, Log or dB (decibels) format.  When Log or dB is chosen, you can also choose the number of decades to display.

• Linear, Log, dB & decades choices are made in the Format | Vertical Axis dialog box.

• Right click in the graphics area, or double click on the vertical axis labels area to open the Format | Vertical Axis dialog box.

dB Units for Linear versus Power Quantities

• For Linear (RMS) quantities (FRFs, Fourier Spectra, etc.),

Magnitude (dB) = 20 Log 10( Magnitude )

• For Power (MS) quantities (Auto Spectra, PSD’s, etc.),

Magnitude (dB) = 10 Log 10( Magnitude )

M#s | Phase

Displays the Phase of complex measurement data, with values between +180 & -180 degrees.

Data Block Window Showing Phase of an FRF.

M#s | CoQuad (Real & Imaginary)

Displays the measurements in CoQuad (Real & Imaginary) format.

• The Real part is also called the Coincident waveform.

• The Imaginary part is called the Quadrature waveform.

CoQuad Display.

M#s | Bode (Magnitude & Phase)

Displays the measurements in Bode (Magnitude & Phase) format.

Bode Plot.

M#s | Nyquist (Real versus Imaginary)

Displays the Real part on the horizontal axis and the Imaginary part on the vertical axis of each measurement.

Nyquist Plot of an FRF.