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I need to use a logic analyzer on RS232, modbus etc. Often the bus is more than 5.0VDC. Is there an inexpensive solution to this? Do I just put a resistor in series with my probe?
Because he didn't know they differed. If he'd known what NE666 has been able to tell him, he probably wouldn't have needed to ask at all. Learning is not just accumulating new facts, it's understanding what it is necessary to know.