Lexmark C770 User Manual page 45

Menu selection Purpose
Serial Buffer Configures the size of the serial
input buffer.
Note: Changing the Serial
Buffer menu item automatically
resets the printer.
Job Buffering Temporarily stores jobs on the
printer hard disk before printing.
Serial Protocol Selects the hardware and
software handshaking values for
the serial interface.
Robust XON Determines whether the printer
communicates availability to the
computer.
This menu item only applies to
the serial port if Serial Protocol
is set to XON/XOFF.
Using printer menus
Values
Disabled
Auto*
3K to maximum
size allowed
Off*
On
Auto
DTR*
DTR/DSR
XON/XOFF
XON/XOFF/DTR
XONXOFF/DTRDSR
Off*
On
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Disables job buffering. Any jobs
already buffered on the disk are
printed before normal processing of
incoming jobs resumes.
Printer automatically calculates the
Serial Buffer size (recommended
setting).
User specifies the Serial Buffer size.
The maximum size 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 maximize the range for the
Serial Buffer size, disable or reduce
the size of the parallel and USB
buffers.
Does not buffer print jobs to the hard
disk.
Buffers print jobs to the hard disk.
Buffers print jobs only if the printer is
busy processing data from another
input port.
Hardware handshaking.
Hardware handshaking.
Software handshaking.
Combined hardware and software
handshaking.
Combined hardware and software
handshaking.
Printer waits to receive data from the
computer.
Printer sends a continuous stream of
XONs to the host computer to indicate
that the serial port is ready to receive
more data.