DFD FXP NStage MRate Simulation VI
Owning Palette: Multirate Fixed-Point Tools VIs
Installed With: Digital Filter Design Toolkit
Simulates the filtering process of a fixed-point multistage multirate filter continuously. Wire data to the signal in input to determine the polymorphic instance to use or manually select the instance.
Use the pull-down menu to select an instance of this VI.
 Place on the block diagram | Find on the Functions palette |
DFD FXP NStage MRate Simulation (DBL)
 | input range specifies the maximum absolute value of the input signal that the fixed-point integer can represent. For example, the input ranges both are 10 for DAQ devices with ranges of [0, 10V] and [–10, 10V]. The default is 1. | ||||||
 | init? specifies how you want to initialize the internal states. The default is TRUE, which specifies that this VI initializes the internal states to zero. If init? is FALSE, this VI initializes the internal states from the final states of the previous call to the current VI instance. To process a large data sequence, split the sequence into smaller blocks, set init? to TRUE for the first block, and set init? to FALSE for the remaining blocks. | ||||||
 | signal in specifies the input signal you want to process. The input word length value you set on the DVD FXP NStage MRate Modeling VI determines the range of signal in. The range equals [–2^(input word length–1), 2^(input word length–1)–1]. For example, if you specify 16 as the input word length value, the corresponding range is [–32768, 32767]. | ||||||
 | multirate filters specifies the input multistage multirate filters. | ||||||
 | 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 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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 | DBL signal out returns the output floating-point signal after postprocessing. | ||||||
 | integer signal out returns the output fixed-point integer signal, which is the same as the output signal from a fixed-point target. | ||||||
 | 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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DFD FXP NStage MRate Simulation (I32)
| input range specifies the maximum absolute value of the input signal that the fixed-point integer can represent. For example, the input ranges both are 10 for DAQ devices with ranges of [0, 10V] and [–10, 10V]. The default is 1. | ||||||
| init? specifies how you want to initialize the internal states. The default is TRUE, which specifies that this VI initializes the internal states to zero. If init? is FALSE, this VI initializes the internal states from the final states of the previous call to the current VI instance. To process a large data sequence, split the sequence into smaller blocks, set init? to TRUE for the first block, and set init? to FALSE for the remaining blocks. | ||||||
| signal in specifies the input signal you want to process. The input word length value you set on the DVD FXP NStage MRate Modeling VI determines the range of signal in. The range equals [–2^(input word length–1), 2^(input word length–1)–1]. For example, if you specify 16 as the input word length value, the corresponding range is [–32768, 32767]. | ||||||
| multirate filters specifies the input multistage multirate filters. | ||||||
| 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 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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| DBL signal out returns the output floating-point signal after postprocessing. | ||||||
| integer signal out returns the output fixed-point integer signal, which is the same as the output signal from a fixed-point target. | ||||||
| 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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DFD FXP NStage MRate Simulation (I16)
| input range specifies the maximum absolute value of the input signal that the fixed-point integer can represent. For example, the input ranges both are 10 for DAQ devices with ranges of [0, 10V] and [–10, 10V]. The default is 1. | ||||||
| init? specifies how you want to initialize the internal states. The default is TRUE, which specifies that this VI initializes the internal states to zero. If init? is FALSE, this VI initializes the internal states from the final states of the previous call to the current VI instance. To process a large data sequence, split the sequence into smaller blocks, set init? to TRUE for the first block, and set init? to FALSE for the remaining blocks. | ||||||
| signal in specifies the input signal you want to process. The input word length value you set on the DVD FXP NStage MRate Modeling VI determines the range of signal in. The range equals [–2^(input word length–1), 2^(input word length–1)–1]. For example, if you specify 16 as the input word length value, the corresponding range is [–32768, 32767]. | ||||||
| multirate filters specifies the input multistage multirate filters. | ||||||
| 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 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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| DBL signal out returns the output floating-point signal after postprocessing. | ||||||
| integer signal out returns the output fixed-point integer signal, which is the same as the output signal from a fixed-point target. | ||||||
| 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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Example
Refer to the Fixed-Point Multistage Multirate Filter Modeling and Simulation VI in the labview\examples\Digital Filter Design\Fixed-Point Filters\Multirate directory for an example of using the DFD FXP NStage MRate Simulation VI.
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