piclist 2000\11\01\121515a >
Thread: RS232 voltage levels (was PIC SBC requirement)
face BY : Dan Michaels email (remove spam text)

Ling SM wrote:
>>> The two
>> boards were working OK for last 2 years, but now on some sets the
>> boards would not talk to each other.  Power off and on would not
>> recover the link, BUT unplugging and replugging the ribbon RS232
>> would.
>> Any ideas what is happening?

What does your oscilloscope say?

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See also: www.piclist.com/techref/microchip/ios.htm?key=rs232
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Subject (change) RS232 voltage levels (was PIC SBC requirement)

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