Description: Combined with oscilloscope, it can be used for electronic circuit test and debugging, frequency characteristic and impulse response test and measurement of audio amplifier. Because DDS has good accuracy and frequency stability, it is also very suitable for oscilloscope scanning time factor calibration. The square wave output is suitable for oscilloscope attenuator and probe pulse characteristic adjustment. Has a filter (can be opened and closed) to adapt to the sine wave and pulse wave output. It can detect a variety of waveforms, such as: sine wave, square wave, triangular wave, positive sawtooth wave, anti-sawtooth wave and so on It can be powered by a power adapter or a 3.7V lithium battery. ,DC4-9V power supply is recommended when using adapters, and 3.7V lithium batteries are recommended when using battery power. Current :180MA, voltage 5V Frequency range: sine wave 0.01Hz-500.00 kHz(with the further increase of frequency, the output amplitude will decrease), other waveforms 0.01Hz-100.00 khz(but does not limit the upper limit of adjustable frequency, if the distortion and jitter requirements are not high, the use of frequency can be further increased). 0.01 Hz. Sine-wave distortion: less than 1kHz <1%, higher than 1kHz <0.5%, output amplitude: maximum ±10V (P-P). Output impedance :50 ohms. Dc bias: Max. ±10V, with shutdown function. All Settings can be saved. There are filters that can be turned on and off, which can be well adapted to sinusoidal and pulse waveform output MODE: The mode key is used to change the output waveform. Cursor: Used to move the cursor (adjust the frequency using the +- key). RUN/STOP: runs or stops the waveform output. When the cursor does not blink, output waveform, other keys are invalid. +: Frequency +, -: frequency - DCOFFSET: indicates the DC bias switch Adjust the DC component of the signal by adjusting the yellow knob ON. Ejected to OFF, the DC component of the signal is 0. FILTER: Filter switch, when the signal is close to more than 300K sine wave, press this button, the waveform will be clean. But the amplitude of the signal will also be smaller AMP: Side keys adjust signal amplitude Package Included: 1 * Signal Generator 1 * USB Power Cable 1 * BNC Clip 1 * Double Ended BNC Cable 1*Schuman Wave Module Board