Series 3400 Signal Generators are the latest additions to Keithley's growing line of instrumentation with pulse generation functions. They offer users extensive control over a wide variety of pulse parameters, including pulse amplitude, rise time, fall time, width, and duty cycle via the instrument's flexible user interface or over the GPIB and USB interfaces. This operational flexibility makes Series 3400 instruments readily adaptable to the needs of a wide range of users, including nanotechnology researchers, research and education organizations, and semiconductor and RF device design and development departments. Built-in pattern generation capabilities simplify simulating serial data patterns when testing devices to characterize their performance while operating under sub-optimal conditions.ies 3400 instruments offer users important performance advantages over some of the best-selling signal generators on the market, including clean transient response, simpler user interface, and esier integration into existing test and measurement systems. The user interface for Series 3400 generators is designed to simplify configuring complex pulses and patterns. By using intuitive parameter menu keys and context-sensitive soft menu keys, users can navigate quickly to their desired parameter controls with just a few key presses, unlike competitivegenerators, which often have many levels of confusing sub-menus and shift-key operations. An industry-standard SCPI command set makes Series 3400 instruments code-compatible with the command set of other popular generators. This compatibility simplifies migrating existing applications from older hardware to the Series 3400 by minimizing the need to rewrite existing program code,which reduces the start-up time and costs associated with replacing older instrumentation.