Check the listing for details. DDS Function Signal Generator Module 1HZ-500KHz Sine +Square Wave. Condition: New. Listed at 20.19 USD. DDS Function Signal Generator Module 1HZ-500KHz Sine +Square WaveDescription: Pattern Name: 1HZ-500KHZ Used for alignment of audio equipment and up into the lower radio frequencies at the lower end of the Am band or Amateur bands Features: Small size, complete functions, simple operation, easy to carry. It can be powered by adapter or lithium battery. The good accuracy and frequency stability of DDS are suitable for oscilloscope scanning time factor calibration. Square wave output, suitable for oscilloscope attenuator and probe pulse characteristic adjustment. Together with the oscilloscope, it can be used for electronic circuit test and debugging, frequency characteristics and impulse response test and measurement of audio amplifiers. Technical index: 1. Frequency range: sine wave 1Hz-500kHz (where the output amplitude is flat to 200 kHz, the output amplitude will decrease as the frequency is further increased), other waveforms 1Hz-50kHz (but the upper limit of the adjustable frequency is not limited, if The requirements for distortion and shaking are not high, and the frequency of use can be further increased). 2. Resolution: 1Hz. 3. Output waveform: sine wave, square wave, triangle wave, forward sawtooth wave, reverse sawtooth wave, electrocardiogram, noise wave. 4. Sine wave distortion: