AIRIX is a linear induction accelerator that will be used for flash X-ray radiography. It will deliver a 20 MeV, 3.5 kA, 60 ns electron beam. This accelerator is now under installation at PEM. The injector, that produces a 3.5 kA, 4 MeV, 60 ns electron beam and 16 induction cells powered by 8 high voltage generators (250 kV per cell) are already operational. At this point, the AIRIX LIA has the same dimension than the PIVAIR prototype installed at CESTA. This paper relates the electron beam characterization that we have made to compare the two accelerators. Those experiments consist first, on beam imaging to validate beam transport code at three points on the beam line. In a second time we measure the energy of the beam with the time-resolved spectrometer to control the acceleration of the beam and to precisely tune the chronometry of the machine. Finally, we measure the emittance of the beam with the Pepper-pot method to compare the value before and after acceleration. We will present also the accelerator update and the experiments we plan to do when the 64 induction cells and the 32 HV generators will be installed.