On the LTspice noise simulation set up table, I inputted the "Input" = V(Vout). It gave me error message (^^^^^^^). How do I fix it? See the screenshot below. Thanks.

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On the LTspice noise simulation set up table, I inputted the "Input" = V(Vout). It gave me error message (^^^^^^^). How do I fix it? See the screenshot below. Thanks.

Hi Rockwell ,
You have not uploaded your files, so I just have to guess.
From the errors, it appears Vout node is not a node, but just a floating illegal directive. With your schematic open, press "N", type "Vout" for the net name, click OK and attach the node of the net name to a wire. You may want to do the same for Vin.
I don't see a .noise directive, but from the error, it looks like you have an extra closed parenthesis symbol. V(Vout)). This may be a result of the above problem.
mike