I. Main Technical Parameters: 1. Output Waveforms: Sine wave, square wave, triangle wave, forward sawtooth wave, reverse sawtooth wave, ECG wave, exponential rise, exponential fall, Lorentz pulse, Gauss pulse, Sinc pulse, half-wave, full-wave, Schumann wave, noise wave — 15 waveforms total. 2. Power Supply: DC 4–9 V; DC 5 V recommended when using an adapter; 3.7 V lithium battery recommended for battery operation. 3. Current Consumption: 180 mA at 5 V. 4. Frequency Range: - Sine wave: 0.01 Hz – 500.00 kHz (output amplitude decreases beyond this range); - Other waveforms: 0.01 Hz – 100.00 kHz (upper frequency limit is not strictly capped; higher frequencies may be used with acceptable distortion and jitter tolerance). 5. Frequency Resolution: 0.01 Hz. 6. Sine Wave Distortion: <1% below 1 kHz; <0.5% above 1 kHz. 7. Output Amplitude: Up to 10 V peak-to-peak (Vpp). 8. Output Impedance: 50 Ω. 9. DC Offset: Up to ±10 V, with shutdown function. 10. Parameter Storage: All settings can be saved. 11. Filters: On/off selectable, optimized for sine and pulse waveform output. II. Features: Compact size (125 × 80 × 26.5 mm), full functionality, simple operation, portable design. Supports power via AC adapter or 3.7 V lithium battery. When used with an oscilloscope, suitable for electronic circuit testing and debugging, frequency response analysis, impulse response measurement, and audio amplifier characterization. High accuracy and frequency stability of DDS technology make it ideal for oscilloscope timebase calibration. Square wave output supports oscilloscope attenuator and probe pulse response adjustment. Note: Slight variations may occur between production batches. Color: Black Material: Plastic Package Contents: 1 × FG-200 DDS Signal Generator Note: Only the items listed are included. Accessories shown in images are for illustration only.