Lexmark C520 Reference Manual page 37

Menu item Purpose
PS SmartSwitch Configures the printer so it
automatically switches to PostScript
emulation when a print job received
through the parallel port requires it,
regardless of the default printer
language.
NPA Mode Specifies whether the printer
performs the special processing
required for bidirectional
communication, following the
conventions defined in the Network
Printing Alliance (NPA) Protocol.
Note: Changing this menu item
automatically resets the printer.
Parallel Buffer Configures the size of the parallel
input buffer.
Note: Changing this menu item
automatically resets the printer.
Job Buffering Temporarily stores jobs on the
printer hard disk before printing.
Note: Changing this menu item
automatically resets the printer.
Advanced Status Enables bidirectional
communication through the parallel
port.
Protocol Specifies the parallel interface
protocol.
Using printer menus
Values
*On
Off
On
Off
*Auto
Disabled
*Auto
3K to maximum
size allowed
(1K increments)
*Off
On
Auto
Off
*On
Standard
*Fastbytes
Menu Groups
37
Printer examines data on the parallel
interface and selects PostScript
emulation if the data indicates that is
the required printer language.
Printer does not examine the incoming
data. The printer uses PCL emulation
to process the job if PCL SmartSwitch
is On, or uses the default printer
language specified in the Setup Menu
if PCL SmartSwitch is Off.
Printer performs NPA processing. If
data is not in NPA format, it is rejected
as bad data.
Printer does not perform NPA
processing.
Printer examines data, determines the
format, and then processes it
appropriately.
Disables job buffering. Any jobs
already buffered on the disk are
printed before normal processing of
incoming jobs resumes.
Printer automatically calculates the
Parallel Buffer size (recommended
setting).
The user specifies the Parallel 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
Parallel Buffer size, disable or reduce
the size of the serial 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.
Disables parallel port negotiation.
Enables bidirectional communication
through the parallel interface.
May resolve some parallel interface
problems.
Provides compatibility with most
existing parallel interface
implementations (recommended
setting).