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Menu item Description
NPA Mode
On
Off
Auto
Sets the printer to perform the special processing required for bidirectional
communication following the conventions defined by the NPA protocol
Notes:
• Auto is the factory default setting.
• When the On setting is used, the printer performs NPA processing. If the data
is not in NPA format, it is rejected as bad data.
• When the Off setting is used, the printer does not perform NPA processing.
• When the Auto setting is used, the printer examines data, determines the
format, and then processes it appropriately.
• Changing this setting from the control panel and then exiting the menus
causes the printer to restart. The menu selection is updated.
Serial Buffer
Disabled
Auto
3k to <maximum size allowed>
Sets the size of the serial input buffer
Notes:
• Auto is the factory default setting.
• The Disabled setting 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 1k 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 control panel and then exiting the menus
causes the printer to restart. The menu selection is updated.
Job Buffering
Off
On
Auto
Temporarily stores jobs on the printer hard disk before printing
Notes:
• Off is the factory default setting.
• The Off setting does not buffer print jobs to the hard disk.
• The On setting buffers jobs on the printer hard disk.
• The Auto setting buffers print jobs only if the printer is busy processing data
from another input port.
• Changing this setting from the control panel and then exiting the menus
causes the printer to restart. The menu selection is updated.
Serial Protocol
DTR
DTR/DSR
XON/XOFF
XON/XOFF/DTR
XONXOFF/DTRDSR
Selects the hardware and software handshaking settings for the serial port
Notes:
• DTR is the factory default setting.
• DTR/DSR is a hardware handshaking setting.
• XON/XOFF is a software handshaking setting.
• XON/XOFF/DTR and XON/XOFF/DTR/DSR are combined hardware and
software handshaking settings.
Understanding printer menus 101