Mark Elo is a senior technical manager at Tektronix. He began his career as a design engineer in Hewlett-Packard's Microwave Division in 1990 and has since held various senior management positions at Agilent Technologies, Anritsu, Gigatronics and Keithley Instruments in R&D, Marketing and Business Development. He has more than 25 years of test and measurement experience in microwave instrumentation.