On Tue, Aug 29, 2023 at 03:56 PM, David Markovitch wrote:
Besides having higher voltages, a USB to RS232 signal will be inverted compared with a RS232 TTL signal.
Not to mention that TRUE RS232 levels swing + and - at those higher voltages.? So your 6V RS232 logic is very likely switching between +6V and -6V.
There is a good explanation here:??of?
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Rob KB8RCO
