On 11/29/2023 7:47 AM, Andy Durbin wrote:
The MAX3232 terminates the input with 5k which is almost identical to the
KAT500 transmitter source impedance.
The impedance that must be matched to preserve waveshape is that of the
transmission line. The RS232 protocol does not do that. Most other
protocols do. Zo of practical cables is in the range of 50-100 ohms.
73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
