  The design and realization of a prototype for the Small-Size class Telescopes
of the Cherenkov Telescope Array is one of the cornerstones of the ASTRI
project. The prototype will adopt a focal plane camera based on Silicon
Photo-Multiplier sensors that coupled with a dual mirror optics configuration
represents an innovative solution for the detection of Atmospheric Cherenkov
light. These detectors can be read by the Extended Analogue Silicon
Photo-Multiplier Integrated Read Out Chip (EASIROC) equipped with 32-channels.
In this paper, we report some preliminary results on measurements aimed to
evaluate EASIROC capability of autotriggering and measurements of the trigger
time walk, jitter, DAC linearity and trigger efficiency vs the injected charge.
Moreover, the dynamic range of the ASIC is also reported.
