Waveform signal disappears on zoom with sample frequency is 10 kHz

[mliberty1]

Joulescope model

JS220

UI version

1.1.10

What OS are you seeing the problem on?

Windows 11

What happened?

When I zoom all the way in, the signal disappears:

This does not happen at 1 MHz sampling frequency.

What was expected?

The Waveform widget should limit the zoom level and prevent the signal from disappearing.

How to reproduce?

1. Configure sample frequency 10 kHz
2. Pause sample streaming
3. Use the scroll wheel to zoom in on the Waveform widget.

[mliberty1]

on_action_x_zoom clamps the minimum to time64.MICROSECOND. While this is appropriate for the full 1 MHz sample rate, it is not correct for 10 kHz. The Waveform widget should adjust this minimum value based on the source signals. Neither self._signals nor self._signals_data give any indication of the underlying sample rate. Both the streaming sample source and the JLS Source must be modified to provide this information to the Waveform widget, which then needs to adjust the minimum x view appropriately.