1.Improved waveform SN ratio: To improve the quality of the waveform, this module has a 70 MHz lowpass filter, which leads to a better signaltonoise ratio. 2.Amplitude setting with pin access: the module provides easy access to the pin (PIN that generates the DA reference. This allows for convenient adjustment of the output waveform amplitude to specific application requirements. 3.Flexible rectangular wave switchon cycle: By adjusting the variable resistance, the reference input voltage of the comparator can be changed, which allows different duty cycles of the rectangular wave output. 4.Stable and precise oscillator: The AD9850 module uses an active oscillator at 125 MHz, while the AD9851 module uses an active oscillator at 30 MHz. This ensures stable and accurate frequency generation. 5.SpecificationFrequency range for AD9850: 040MHz. Output: 2 sine waves and 2 square waves. Harmonic distortion can increase above 2030MHz. Square wave frequency: 01MHz. Improved waveform SN ratio with a 70MHz lowpass filter. Allows you to choose between parallel and serial data input. Duty cycle of the rectangular wave can be adjusted via the variable resistance. Modules have stable 125MHz and 30MHz active oscillators. Size: 4.5 x 2.6 cm.