Precision Programmable Step Generator for Use in Automated Test Systems

摘要

A precision voltage step generator has been designed for use in automated systems to test the dynamic response of waveform recorders and other instruments. The programmable pulse parameters include transition polarity, pulse length, and repetition rate. The initial and final levels of voltage steps are each programmable within the range of + or - 1 V for a 50 ohm termination and within + or - 5 V for a high impedance load. Voltage steps within these ranges settle to within + or - 0.02% of full scale range (FSR) in less than 22 and 26 ns, respectively, for small load capacitance. The corresponding transition durations are approximately 6 and 7 ns.