Lexmark C950 manual Understanding printer menus 121, Serial Buffer, Robust XON

Understanding printer menus		121
	Menu item	Description
	Serial Buffer	Sets the size of the serial input buffer
	Auto	Notes:
	3KB to [maximum size allowed]
		• Auto is the factory default setting.
	Disabled
		• Disabled turns off job buffering. Any jobs already buffered on the disk are
		printed before normal processing is resumed.
		• The serial buffer size setting can be changed in 1‑KB increments.
		• The maximum size allowed depends on the amount of memory in the printer,
		the size of the other link buffers, and whether Resource Save is set to On or
		Off.
		• To increase the maximum size range for the Serial Buffer, disable or reduce
		the size of the parallel, serial, and network buffers.
		• Changing this setting from the printer control panel and then exiting the
		menus causes the printer to restart. The menu selection is then updated.
	Job Buffering	Temporarily stores print jobs on the printer hard disk before printing
	Off	Notes:
	On
		• Off is the factory default setting. The printer does not buffer print jobs on the
	Auto
		printer hard disk.
		• On buffers print jobs on the printer hard disk.
		• Auto buffers print jobs only if the printer is busy processing data from another
		input port.
		• Changing this setting from the printer control panel and then exiting the
		menus causes the printer to restart. The menu selection is then updated.
	Protocol	Selects the hardware and software handshaking settings for the serial port
	DTR	Notes:
	DTR/DSR
		• DTR is the factory default setting.
	XON/XOFF
		• DTR/DSR is a hardware handshaking setting.
	XON/XOFF/DTR
	XONXOFF/DTRDSR	• XON/XOFF is a software handshaking setting.
		• XON/XOFF/DTR and XON/XOFF/DTR/DSR are combined hardware and
		software handshaking settings.
	Robust XON	Determines whether the printer communicates availability to the computer
	Off	Notes:
	On
		• Off is the factory default setting.
		• This menu item applies only to the serial port if Serial Protocol is set to
		XON/XOFF.