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pulse duration [ms] specifies the duration in milliseconds of the shock.
The default value is -1. The vibration during the duration of the shock is the initial vibration. The vibration after that is the residual vibration. If pulse duration [ms] is less than 0, this VI sets pulse duration [ms] equal to the total measurement time, and the residual duration is 0.
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maximum value type specifies the type of peak levels to compute.
| Maximax (default) |
| Initial positive |
Initial negative
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Initial absolute
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Residual positive
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Residual negative
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Residual absolute
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scaled signal [EU] specifies the scaled signal expressed in the selected engineering units. To obtain a properly scaled signal, you can use the SVL Scale Voltage to EU VI or define a virtual channel in National Instruments Measurement & Automation Explorer (MAX).
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frequency range specifies the frequencies at which to perform the shock response analysis.
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low frequency [Hz] specifies the lowest frequency of the shock response spectrum.
low frequency [Hz] must be greater than zero and less than high frequency [Hz].
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high frequency [Hz] specifies the highest frequency of the shock response spectrum.
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frequencies / octave specifies the number of frequencies to use per octave.
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model specifies what type of shock response spectrum is desired.
The default value is absolute acceleration.
Absolute acceleration (default)
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Relative displacement
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critical damping factor is the ratio of damping to critical damping. Usually, it is annotated as zeta. It is equal to 1/2Q, where Q is the resonant gain. The default value is 0.05, which equates to a resonant gain of 10.
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error in describes error conditions that occur before this VI or function runs.
The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use exception control to treat what is normally an error as no error or to treat a warning as an error. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
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status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
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code is the error or warning code. The default is 0.
If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
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source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
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preprocessing settings contains the settings for the preprocessing of scaled signal [EU].
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lowpass filter On ? specifies whether or not to apply a lowpass filter to the scaled signal [EU] before computing the shock response spectrum.
The default is FALSE.
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lowpass cutoff frequency [Hz] specifies the cutoff frequency of the lowpass filter used in preprocessing when lowpass filter On ? is set to TRUE.
|
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remove DC ? Specifies whether the DC component is removed from scaled signal [EU] before computing the shock response spectrum. The default is FALSE.
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displacement units specifies the base length units in shock spectra.
no change
|
m (default)
|
mm
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microns
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in
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mils
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shock spectrum returns the shock response spectrum of the structure.
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natural frequencies [Hz] contains the natural frequencies of the shock response spectra.
|
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maximum values contains the peak response values at natural frequencies [Hz].
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unit label returns the selected engineering units.
|
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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.
Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
|
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code is the error or warning code.
If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.
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pulse duration [ms] specifies the duration in milliseconds of the shock.
The default value is -1. The vibration during the duration of the shock is the initial vibration. The vibration after that is the residual vibration. If pulse duration [ms] is less than 0, this VI sets pulse duration [ms] equal to the total measurement time, and the residual duration is 0.
|
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maximum value types specifies the type of peak levels to compute for each channel.
Maximax (default)
|
Initial positive
|
Initial negative
|
Initial absolute
|
Residual positive
|
Residual negative
|
Residual absolute
|
|
|
scaled signal [EU] specifies the scaled signal expressed in the selected engineering units. To obtain a properly scaled signal, you can use the SVL Scale Voltage to EU VI or define a virtual channel in National Instruments Measurement & Automation Explorer (MAX).
|
|
frequency range specifies the frequencies at which to perform the shock response analysis.
|
low frequency [Hz] specifies the lowest frequency of the shock response spectrum.
low frequency [Hz] must be greater than zero and less than high frequency [Hz].
|
|
high frequency [Hz] specifies the highest frequency of the shock response spectrum.
|
|
frequencies / octave specifies the number of frequencies to use per octave.
|
|
|
model specifies what type of shock response spectrum is desired.
The default value is absolute acceleration.
Absolute acceleration (default)
|
Relative displacement
|
|
|
critical damping factor is the ratio of damping to critical damping. Usually, it is annotated as zeta. It is equal to 1/2Q, where Q is the resonant gain. The default value is 0.05, which equates to a resonant gain of 10.
|
|
error in describes error conditions that occur before this VI or function runs.
The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use exception control to treat what is normally an error as no error or to treat a warning as an error. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
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status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
|
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code is the error or warning code. The default is 0.
If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
|
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source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
|
|
|
preprocessing settings contains the settings for the preprocessing of scaled signal [EU].
|
lowpass filter On ? specifies whether or not to apply a lowpass filter to the scaled signal [EU] before computing the shock response spectrum.
The default is FALSE.
|
|
lowpass cutoff frequency [Hz] specifies the cutoff frequency of the lowpass filter used in preprocessing when lowpass filter On ? is set to TRUE.
|
|
remove DC ? Specifies whether the DC component is removed from scaled signal [EU] before computing the shock response spectrum. The default is FALSE.
|
|
|
displacement units specifies the base length units in shock spectra.
no change
|
m (default)
|
mm
|
microns
|
in
|
mils
|
|
 |
shock spectra returns the shock response spectra of the structure.
|
shock spectrum returns the shock response spectrum of the structure.
|
natural frequencies [Hz] contains the natural frequencies of the shock response spectra.
|
|
maximum values contains the peak response values at natural frequencies [Hz].
|
|
|
|
unit label returns the selected engineering units.
|
|
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.
Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
|
|
code is the error or warning code.
If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
|
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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.
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