SRS damping

The damping assumptions are not clear in this module.  I assume the input spectrum is created with the assumption of a Q=10 or 5% of critical as is standard in the industry.  Twenty modes are included in this assembly model under test and unlike random, modal damping is not an option in the analysis set-up.  What is the default for the model response? 

Thanks for your assistance. 

SolidworksSimulation