The SRS synthesis and control package provides the means to 
control the measured SRS of the DUT to match a target SRS, the 
Required Response Spectrum (RRS). The necessary drive time 
history is synthesized from damped-sine or sine-beat wavelets. 
Damped Sine Parameters include frequency, amplitude, critical 
damping factor, and delay. Waveforms may be automatically 
synthesized from a user-specified SRS reference profile.