The HP Agilent ESG Family of RF Digital and Analog Signal Generators is well-suited for general purpose R&D benchtop use, general purpose test needs, and more. The applications it is suited for vary from model to model. The ESG Family has many useful features, including: different spectral purity performance levels, analog and digital or only analog models, a frequency range from 250 kHz to 1, 2, 3, or 4 GHz, great absolute level preciseness and dependability, and these models are light and easy to transport. There are also many optional personalities for certain applications, which further enhances the power, features, and performance of the RF Digital/Analog Signal Generator.