The PrmanSignalVisualizer is a debugging node lets you inspect the affect of pattern outputs on materials in your scene.  The node isolates a selected pattern output and visualizes it as a constant color on the objects where the material is assigned.  It can also be used to isolate a vstruct output from PxrLayer or PxrLayerMixer. 

Parameters

Mode

: PrmanSignalVisualizer has two modes - select port and signal input.  The signal input mode is not available for materials created with NetworkMaterialCreate in Katana 3.2+.

Material Location 

Location: The scenegraph location of the material that you wish to inspect

Keep Displacement

: When enabled, this will keep the displacement on the object where the material is visualized.  When disabled, the object will render without dsplacement.

"Select Port" mode-only parameters

Set from Scenegraph Selection 

Selection: With a material selected in the Scene Graph, press this button to populate the Material Location, Shading Node, and Output Port parameters.  These

Shading Node

: The name of the selected pattern. This will be automatically filled when you select an output port in the window that pops up when the Set from Scenegraph Selection button is pressed 

Output Port 

Port: The name of the selected output. This will be automatically filled when you select an output port in the window that pops up when the Set from Scenegraph Selection button is pressed 

Clear Node and Port 

Port: This button will reset the read-only node and port parameters

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