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Window Properties (By Coef) (G Dataflow)

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Last Modified: June 25, 2019

Computes the coherent gain and equivalent noise bandwidth of a window according to the window coefficients.

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window coefficients

Window coefficients for computing the coherent gain and equivalent noise bandwidth.

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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

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eq noise bw

Equivalent noise bandwidth of the window defined by the window coefficients.

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coherent gain

Coherent gain of the window defined by the window coefficients.

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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.

Algorithm for Window Properties

The following equations define the coherent gain (CG) and equivalent noise bandwidth (ENBW) of a given window:

C G = ∑ i = 0 n − 1 w i n
E N B W = n ∑ i = 0 n − 1 w i 2 ( ∑ i = 0 n − 1 w i ) 2

where w i are the window coefficients and n is the number of coefficients.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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

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