Filter Analysis Express VI

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Owning Palette: Filter Analysis VIs

Installed With: Digital Filter Design Toolkit

Analyzes the specified characteristics of a filter.

Place on the block diagram

Find on the Functions palette

Dialog Box Options

Parameter	Description
Show impulse response	Plots the impulse response if you place a checkmark in the checkbox.
Show step response	Plots the step response if you place a checkmark in the checkbox.
Show pole-zero plot	Plots the poles and zeroes if you place a checkmark in the checkbox.
Show magnitude response	Plots the magnitude response if you place a checkmark in the checkbox.
Show phase response	Plots the phase delay response if you place a checkmark in the checkbox.
Show group delay	Plots the group delay response if you place a checkmark in the checkbox.
Magnitude	Contains the following options: Linear—Displays the magnitude response using a linear scale. dB—Displays the magnitude response in decibels.
Phase	Contains the following options: Unwrap phase—Specifies whether this Express VI wraps or unwraps the phase. If you place a checkmark in the checkbox, this Express VI unwraps the phase and does not restrict the phase to [0, 2π]. Unit in degree—Specifies whether to display the phase in degrees or radians. If you place a checkmark in the checkbox, this Express VI displays the phase in degrees.

Parameter	Description
filter in	Specifies the input filter.
error in (no error)	Describes error conditions that occur before this VI or function runs.

Parameter	Description
magnitude	Returns the magnitude response plot.
phase	Returns the phase response plot.
group delay	Returns the group delay response plot.
Z Plane	Returns the pole-zero response plot.
impulse	Returns the impulse response plot.
step	Returns the step response plot.
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.

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