Applied Systems Engineering Inc. (ASE) is a smart grid protocol technology leader and a leading manufacturer of Remote Terminal Unit (RTU)/Intelligent Electronic Device (IED) protocol test equipment for the supervisory control and data acquisition (SCADA) industry. Other products include communication protocol translators, front-end processors, substation alarm annunciators, terminal servers, modems, and source code libraries. Based in Campbell, California, ASE has developed market leading substation protocol test sets for more than 100 substation and industrial protocols, over a 30 year period. In January 2015, ASE became part of Kalkitech, a provider of Smart Grid optimization and communication solutions.