The Keithley 4220-PGU (Pulse Generator Unit) is an expansion unit for the 4200A-SCS Parameter Analyzer designed specifically for ultra-fast pulse applications. With the ability to generate precise pulses with high speed and accuracy, the 4220-PGU is ideal for characterizing semiconductor devices and materials. The unit supports various pulse widths and amplitudes, enabling detailed analysis of dynamic and transient phenomena in electronic components.