TG1006 10MHz DDS frequency generation to provide greater accuracy and stability, DDS (direct digital synthesis) is a technique for generating waveforms digitally using a phase accumulator, a look-up table and a DAC. High spectral purity, low phase noise and excellent frequency agility. Sweep is fully phase continuous 0.1Hz to 10MHz. linear or logarithmic, single or continuous. FSK provides phase coherent switching between two selected frequencies at a rate defined by the trigger source. AM Amplitude modulation from 0 to 100% either internal 400Hz source or an external source (DC to 20kHz). The generator has non-volatile storage for up to 10 frequency settings. External 120MHz Reciprocal counting measurement frequency counter.