I have two I2C messages 20 ms apart:
When I adjust the horizontal scale and look at them in normal trigger mode, I see both of them overlayed over each other:
(At least that is what I assume I'm seeing.)
After the second message there's silence for a second or so, so this image stays on screen until the next transmission.
If I press the RUN/STOP button, I see just one message:
Display persistence is off. Is this a bug in my Rigol DS1052E or do I have some misconception about how normal trigger mode works? If the trigger holdoff time is short enough for the second message to trigger again, shouldn't the first message be cleared from the screen before recording the second one?