The HSM3001A from Holzworth Instrumentation is an RF synthesizer module that operates from 100 kHz to 3 GHz. It is a microwave CW source that is architected on a non-PLL based platform. The digital-analog hybrid design provides excellent phase noise performance and spurious response, which compliments the phase coherent nature of this digital-analog hybrid signal source. The module can be controlled directly via the SPI bus using the Holzworth GUI, a preloaded lookup table, LabVIEW, MATLAB, C++, C#, etc. It has a switching speed of less than 6 µs with phase memory and an onboard precision 100 MHz OCXO. The HSM3001A is ideal for electronics design, manufacturing test and OEM systems integration applications.