Shareware, $69.95
... serial ports (with optional monitor/control cables and rs232/rs485/rs422/TTL converters), no more expensive hardware protocol analyzer is required. ... and monitoring in Hexadecimal, Decimal, Octal, Binary and ASCII formats. It also allows you to change / monitor RS-232's line states: RTS, DTR, CTS, DSR, DCD, and RI. All data and signal flows ...
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