Q: Can the 4 output channels of the AD9959 module be set to different frequency outputs?
A: Yes, the frequency, amplitude, and phase of the 4 output channels of the AD9959 module can be adjusted independently.

Q: What is the main frequency of the module? Can the output amplitude be adjusted?

A: The main frequency of the module is determined by the input clock and the program. The module can input the clock externally. The onboard default clock is 25MHz, and the program controls the frequency multiplier to be 20 times, that is, the default main frequency is 500MHz. The main frequency can be changed by modifying the input clock and the frequency multiplier. The input clock must be between 20MHz-30MHz. The output amplitude can be controlled by modifying the 10-bit amplitude register. You need to modify the program yourself.

Q: Can the module realize frequency sweeping? Can it generate square wave signals?

A: The module can realize frequency sweeping, and the code provided by our store can support frequency sweeping. If you need square waves, you can use our high-speed comparator to convert them into square waves. AD9959 can only output sine wave signals. The frequency, amplitude and phase of the four channels are independent and adjustable.

Q: Why is the phase difference between channels not the preset value each time after setting? It is different every time?
A: This is caused by the order of writing registers. You should write the frequency register first, then the amplitude register, and finally the phase register. In this way, the value of the phase register is the preset value.

Q: How to adjust the amplitude and phase?
A: The main control board equipped in our store can adjust the frequency, amplitude and phase. Press and hold the middle key to switch to the adjustment interface and the frequency sweep interface.