[en] Two isolated pulsars, the Crab and PSR B0540-69, were observed during the Science Verification Phase with the NFIs on board BeppoSAX. Here we present results from these two observations. In particular, we determine the spectral variations of the phase component P2, P1 and Ip of the Crab light curve using the P1/P2 and Ip/P2 ratio. We also give a brief summary of the spectral and temporal analysis. Moreover, we present the light curve of PSR B0540-69 in different energy bands and, using the best period derived from the BeppoSAX observation together with the previous ones, determine the rotational parameters of the pulsar and the relative breaking index