ETS-Lindgren's HI-1710A Microwave Oven Survey Meter combines proven and reliable diode sensing technology with digital processing techniques to accurately measure microwave oven radiation. The RS232 interface allows easy adapting of the unit to computerized data acquisition in laboratory studies and semi-automatic production test systems. Digital Peak-Hold and Push Button Zeroing aid in improving testing productivity and reducing errors. Digital filters, selected from the front panel, provide the Fast or Slow responses familiar to analog survey instrument users. Built in self-test sequences test meter performance at turn-on and each time the meter is zeroed. Diagnostic functions accessed from the front panel give quick indications of meter status.