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Good morning, I'm new in this forum. I'm writing because I'm working on a project related to the generation of two encoded signals. As you can see from the uploaded code, the encoded signal (encoded[]) is made of a fixed base (encoding[]) that is multiplied by each element in the array data[]. Therefore the encoded signal is a bit stream of 0 and 1 that I created using funcCustom. The main constraint of this projects is that the two signals must be SYNCHRONOUS. The PROBLEM is that in reality they're not as you can see from the oscilloscope image. Sometimes it happens that there is a small delay of 4µs and sometimes there isn't at all. Why does it happen? This is crucial for my application. In the code I used this kind of synchronization: dwf.FDwfAnalogOutMasterSet(hdwf, c_int(1), c_int(0)) dwf.FDwfAnalogOutConfigure(hdwf, c_int(-1), c_bool(True)) Thank you, Alessandro CDMA_customFunc.py