The SG380 Series RF Signal Generators use a unique, innovative architecture (Rational Approximation Frequency Synthesis) to deliver ultra-high frequency resolution (1 Hz), excellent phase noise, and versatile modulation capabilities (AM, FM, M, pulse modulation and sweeps) at a fraction of the cost of competing designs. The standard models produce sine waves from DC to 2.025 GHz (SG382), 4.05 GHz (SG384) and 6.075 GHz (SG386).