AWG - update time?

Hi, I plan to operate a Laser whose output power is controlled by a PWM signal between 5kHz-100kHz. Besides continuous operation at a fixed PWM signal I want to implement a feedback loop to stabilize the output power. Hence, I need to continuously update the PWM signal applied to the Laser. I thought of using the arbitrary waveform generator to generate the pwm signal. My question is the following: If I operate the AnalogDiscovery2 and set a new arbitrary waveform/PWM signal, do you kn

By the_desperate_one, July 23, 2019
3 replies

Hi @the_desperate_one As previously mentioned there is not guaranteed latency. In this simple example the AWG duty is adjusted 100 times which takes on my machine 100-500ms. One adjustment usually takes 1-10ms, depending on USB and available system resource. You would probably want to make some measurement, like with Scope and based on this to adjust the output. This will take additional time.