SDK module decription

Hi is there any documentation that describes each module in the SDK? I'm using the SDKtool but am looking for any documentation/reference manual that describes each module.

I'm specifically interested in the modules related to PV systems & layouts.

Hello,
For documentation of the SDK modules, you should refer to the SAM user interface and its help system, and the technical documentation of the models available on the Performance Model Documentation page of this website.
For the pvsamv1 module, you can refer to the PV technical reference manual available from that page.
Best regards,

Paul.