DDS Signal Generator Module Development Board 0-70MHz AD9851 2 Sine Wave and 2 Square Wave The module can output sine wave and square wave, 2 sine wave and 2 square wave output._x000D_ AD9851: 0-70MHz_x000D_ After the frequency is 20-30MHz, the harmonic becomes larger and larger, and the waveform will become more and more unclean._x000D_ Square wave: 0-1MHz_x000D_ Uses a 70MHz low-pass filter to make the waveform's SN ratio better_x000D_ _x000D_ 10-bit DAC, 32-bit frequency control word_x000D_ The comparator's reference input voltage is generated by a variable resistor. Adjusting this resistor can get different duty cycle square waves._x000D_ Note: In the case of outputting a sine wave, connect to the IO port of the square wave output and directly adjust_x000D_ The blue potentiometer can output a square wave._x000D_ AD9851 module uses 30MHZ active crystal_x000D_ Colour:As Shown_x000D_ Material:PCB_x000D_ _x000D_ Package Contents:_x000D_ 1 x Signal Generator Module_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_