The Model 865 Series RF / Microwave Signal Generator offers our highest performance level with ultra-low noise signals from 100kHz to 40GHz (settable to 42 GHz). The compact design introduces new power options allowing a broad dynamic range to meet a wide range of applications. The 865 also leverages a faster power and frequency switching capability to expand your ability to test receivers, components, antennas, and other devices. The front panel touchscreen allows full operation of the instrument while a simple GUI is also included for remote operation. You can connect by USB, LAN or GPIB to control your instrument. RF signal performance across a broad frequency range, with accurate output power control, is now affordable and available in a small enclosure. If your group or department is looking for a replacement for the N8221A, this is exactly what you need and what you've been looking for. The Model 865 is currently the only device that will meet and exceed the technical capabilities of the N8221A.