Protocol analyzers for T1 lines, TCP/IP connections, and RS232, RS422 and RS485 communications are also available. Telephone testers are network test equipment for telephone lines and ...
He developed his own hardware and packet format using the RS-485 protocol.
The HP4952A Protocol Analyzer actually looks a lot like an old computer, even if it was never meant for general-purpose use. The heart of the machine is a Zilog Z80 CPU, though, so it shares a lot ...
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