The OBDT board: A prototype for the Phase 2 Drift Tubes on-detector electronics

We present here the design and performance of the OBDT board, which is the new prototype built to substitute the CMS DT muon on-detector electronics. The OBDT is responsible of the time digitization of the DT signals, allowing further tracking and triggering of the barrel muons. It is also in charge of the slow control tasks of the DT chamber systems. A prototype of this board has been produced and is being tested both in the laboratory and also in test stands with real DT chambers. The full functionality in real conditions is being evaluated, showing very satisfactorily results.