File talk:RS232-UART Oscilloscope Screenshot.png

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The bottom half of this image is unnecessary[edit]

The bottom half of this image provides no value, there is no indication of the voltage levels between high and low, it looks like it was output through a logic analyzer not a true oscilloscope and is scaled very poorly. CombatWombat42 (talk) 22:43, 24 June 2013 (UTC)[reply]

Look up what a UART does and it might become clearer. It's not just voltage shifted, it's not even just cleaned by a Schmitt trigger (which would remove the ringing), the timing has also been cleaned up. This is no longer an analogue signal that has been cleaned up, it's now a regenerated signal: the analogue signal is converted to a digital word (not just serial digital levels, a data word) and this word is then used to regenerate a serial analogue signal. Andy Dingley (talk) 22:57, 24 June 2013 (UTC)[reply]
That doesn't really respond to any of my statements about this image. CombatWombat42 (talk) 15:16, 25 June 2013 (UTC)[reply]
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