ET3320C series two-channel function/arbitrary wave generatorS (hereinafter referred to as ET33C series) adopts direct digital frequency synthesis technology, which can output signals with high accuracy, stability and low distortion. Model: ET3320C Sine: 1Hz 20MHz Square: 1Hz 15MHz Triangle: 1Hz 15MHz Pulse: 100Hz 6MHz Arbitrary : 100Hz 6MHz Frequency Resolution: 1Hz Frequency Accuracy:20ppm Frequency Stability: 1ppm/3 hour Functional characteristic 2.4-inch 320X240 TFT LCD with clear graphic interface Chinese / English menu available Both channels are independent of each other and have phase synchronization function. Sampling rate: 200MSa/S, vertical resolution: 13 bit and storage depth: 8k 5 basic waveforms and 32 arbitrary waveforms in-built waveform storage; Support internal storage of 50 groups of user-defined edited waveforms; Pulse wave output set in edge time Internal AM, FM, PM modulation function（External AM, FM, PM modulation is optional） Internal/external ASK, FSK, PSK modulation function; Dual channel output, maximum output frequency 60M; Output of linear/logarithmic sweep and burst (pulse train) waveforms; With 100MHz high precision frequency meter and 32 bit counter; Standard USB Device interface; Optional external analog modulation interface; Equipped with multifunctional arbitrary waveform editing software.