Verification phase ===================== We check the consistency of the data: * number of modal depreciations = number of modes selected. * number of support nodes equal to the number of components (for excitation). * number of pairs of indices selected in the excitation interspectrum = number of supports or number of excitation points. * in the case of pressure sources: number of supported nodes equal to twice the number of pairs of indices retained in the excitation interspectrum. * the presence of a mode_meca is verified in cases of excitation by a quantity of type DEPL_R. * :math:`\mathrm{fmax}\ge \mathrm{fmin}`