?The display interface adopts 2.4-inch TFT color LCD, which makes the operation more intuitive and convenient ?The instrument USES direct digital frequency synthesizer (DDS) technology to provide stable, accurate, pure and low-distortion signals ?Surface mount technology can improve anti - interference and service life. Rich keyboard shortcuts and graphical user interface simplify each operation, easy to operate ?The instrument USES A 14-bit high D/A conversion chip (5Vpp output quantization error less than 1mV), A sampling rate of 250MSa/s, and A vertical resolution of 14bit ?100% Guarantee: High quality product, we promise to do everything possible to satisfy all customers. However, if you are not 100% satisfied with our service or our products, simply contact us. We are always at the side of our customers to support and continuously seek new ways to improve