  The CALICE collaboration is currently developing an engineering prototype of
an analog hadron calorimeter for a future linear collider like the ILC. One
main task of this prototype is to demonstrate the feasibility of building a
realistic detector with fully integrated front-end electronics. To reach the
required high jet energy resolution the detector is based on highly segmented
read out layers. The signals are sampled by scintillating tiles that are
individually read out by silicon photomultipliers. The readout chips are
integrated into the calorimeter layers and are optimized for minimal power
consumption. An LED system is integrated into each channel of the detector to
calibrate the photodetectors. This report presents the realization of a setup
of one layer and the performance in a testbeam environment.
