Lexmark Monochrome Laser Administrator's Guide (1.4 MB) - Page 68
Robust XON, Serial Protocol, XON/XOFF, XON/XOFF/DTR/DSR combined handshaking
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Serial Menu (continued) Menu item Serial Protocol Robust XON * Factory default Values DTR* (hardware handshaking) DTR/DSR (hardware handshaking) XON/XOFF (software handshaking) XON/XOFF/DTR (combined handshaking) XON/XOFF/DTR/DSR (combined handshaking) The printer supports hardware handshaking, software handshaking, and combined hardware and software handshaking as indicated in the list of values for this menu item. Refer to the Technical Reference for more information about serial interface. Off* On Robust XON only applies to the serial port if Serial Protocol is set to XON/XOFF. When Robust XON is set to On, the printer sends a continuous stream of XONs to the host computer to indicate that the serial port is ready to receive more data. Using the Operator Panel and Menus 68
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