Feature: 1. SMALL AND CONVENIENT: DDS functional signal generator is compact and light weight, full featured, simple to operate and easy to carry. 2. STABLE: DDS function signal generator has high accuracy and frequency stability, suitable for oscilloscope scan time factor calibration. 3. SQUARE WAVE: DDS function generator can square wave output, suitable for oscilloscope attenuator and probe pulse characteristics adjustment, etc. 4. USE: Function signal generator together with oscilloscope can be used for electronic circuit testing and debugging, sound amplifier frequency, characteristics and impulse response testing and measurement. 5. OUTPUT WAVEFORM: DDS signal generator has sine wave, square wave, triangle wave, forward sawtooth wave, reverse sawtooth wave output waveform. Specification: Item Type: Function Signal Generator Material: ABS Frequency Range: Sine Waveform 1‑500KHz (Where The Output Amplitude is Flat Up to 200KHz, with The Further Increase in Frequency Output Amplitude Will Be Reduced), Other Waveforms 1‑50KHz (But The Upper Limit of Adjustable Frequency Does Not Limit, If The Distortion and Wobble Requirements Are Not High, The Use of Frequency can Be Further Increased) Resolution: 1Hz Output Waveform: Sine Wave, Square Wave, Triangle Wave, Forward Ramp, Reverse Ramp Sine Wave Distortion: