I am using Host Scopes to capture signal data of my model running on a Simulink Real-time target. My base model has a sample time of 24000Hz, but almost all blocks inside the model are running on 8000 Hz. The timing legend shows that there are in fact no blocks/signals running at 24kHz:
I have configured the Host Scope to log a signal inside a part that runs on 8000 Hz, with Decimation set to 1. However, the signal data is still sampled at 24000 Hz.
I am not surprised that Decimation = 1 means a sampling at 24000 Hz, but I am surprised that the signal data is different at each sample, while the signal is only going at 8000 Hz.
Shouldn't I need to see the same signal value very three samples? How can it sample at 24kHz in a 8kHz section?
With kind regards,