Home Support NI Product Manuals LabVIEW NXG 2.0 Manual

Table Of Contents

Filter Conversion (G Dataflow)

Download Manual | Offline Viewer Required
Version:
Last Modified: December 18, 2017

Converts a filter from the IIR cascade form to direct form.

connector_pane_image
datatype_icon

filter in

The input IIR cascade filter.

datatype_icon

filter structure

Structure of the input filter.

This input can only be IIR Cascade 2nd Order or IIR Cascade 4th Order.

Name Value Description
IIR Cascade 2nd Order 0 Uses IIR second-order filter stages.
IIR Cascade 4th Order 1 Uses IIR fourth-order filter stages.
IIR Direct 2 Uses the direct-form IIR filter.
FIR 3 Uses the FIR filter.

Default: IIR Cascade 2nd Order

datatype_icon

forward coefficients

Forward coefficients of the filter.

datatype_icon

reverse coefficients

Reverse coefficients of the filter.

datatype_icon

sampling frequency

Sampling frequency in Hz.

This input must be greater than 0.

datatype_icon

error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

datatype_icon

filter out

The output IIR direct filter.

datatype_icon

filter structure

Structure of the output filter.

This output always returns IIR Direct.

Name Value Description
IIR Cascade 2nd Order 0 Uses IIR second-order filter stages.
IIR Cascade 4th Order 1 Uses IIR fourth-order filter stages.
IIR Direct 2 Uses the direct-form IIR filter.
FIR 3 Uses the FIR filter.
datatype_icon

forward coefficients

The direct-form, forward coefficients.

datatype_icon

reverse coefficients

The direct-form, reverse coefficients.

datatype_icon

sampling frequency

The sampling frequency in Hz.

datatype_icon

error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: This product does not support FPGA devices

Web Server: Not supported in VIs that run in a web application

Recently Viewed Topics