The invention relates to a method for the qualitative and quantitative analysis of samples by optical emission spectroscopy with laser excitation, using a database created on single-element aqueous solutions all having the same pure element concentration, this database containing, for each element, the wavelengths of the emission lines and their respective intensities. Next, said communication parameters are determined on the basis of said guide information, and determined communication parameters are communicated under said connection. The hierarchical interface display module is configured to display an interrelation between a plurality of interface objects and a plurality of groups each including a plurality of signal, power and ground lines.