For programming, developing and testing of ASi-5 and ASi-3 nodes Bihl+Wiedemann has developed the ASi-5/ASi-3 Function and EMC Test Master BWU4017. The device has an ASi-5 master and an ASi-3 master as well as an Ethernet interface and is compatible with all ASi generations. It can be operated as a tool for programming ASi ICs, as a tool for performing functional and EMC tests or as a standard ASi -5 or ASi-3 master.