Custom pulse generator for RPC testing

We present a pulse generator able to generate pulses statistically similar to the ones produced by RPC cells. The device generates up to four arrays of fast and narrow random-like pulses. Polarity, maximum amplitudes, widths and pulse rate in each channel may be modified independently in order to simulate different RPC setups and environments. This portable and cost-effective pulse generator is a versatile instrument for testing FE-Electronics and different real detector features related with the signal propagation inside the detector. It has been developed in the framework of the ESTRELA11ESTRELA (Electrically Shielded Timing RPC Ensemble for Low Angles) is part of the upgrade of the HADES experiment at GSI with the aim of constructing an RPC-based time-of-flight wall that will cover around 8 m2 in order to cope with the high particle multiplicities expected for heavy nuclei collision systems such as Au+Au. ct of the HADES experiment at GSI.