Giovanni Gallavotti, Fabio Perroni An experimental test of the local fluctuation theorem in chains of weakly interacting Anosov systems (48K, LaTeX2e) ABSTRACT. An experimental test of a large fluctuation theorem is performed on a chain of coupled ``cat maps''. Our interest is focused on the behavior of a subsystem of this chain. A local entropy creation rate is defined and we show that the local fluctuation theorem derived in [G1] is experimentally observable already for small subsystems.