1. Reference problem

Several signal readings are to be carried out:

• reading a non-centered accelerogram (maximum amplitudes \(>0\) and \(<0\) different) expressed in \(g\) (\(9.81{\mathrm{m.s}}^{-2}\)) and looking for the maximum amplitude,

• calculation of oscillator spectra for reduced damping \(\xi =0.01\) (\(1\text{\%}\)) with calculation options:

• pseudo-absolute acceleration and regain the high frequency training acceleration (\(f\ge 100\mathrm{Hz}\)),

• relative displacement,

• reading a centered accelerogram (LBEW: Long Beach East West earthquake) and looking for the maximum amplitude,

• calculation of the oscillator spectrum in absolute pseudo-acceleration,

• reading an oscillator spectrum in free format.