Voltcraft-DDS-3005-USB (Universal Serial Bus)-DDS-Function-Generator-Module-Voltcraft-91028C1-p-The-Voltcraft-DDS-3005-function-generator-uses-direct-digital-synthesis-DDS-to-generate-arbitrary-waveforms-up-to-5-MHz-defined-by-a-connected-PC-via-USB (Universal Serial Bus)-In-addition-to-the-freely-definable-arbitrary-functions-standard-signals-such-as-sine-square-triangle-saw-tooth-TTL-noise-trapezium-&-exponential-are-available-as-well-as-AM-&-FM-The-generator-has-two-frequency-counter-inputs-one-from-DC-to-25 M Hz-with