Lexmark X422 X422 MFP User's Reference - Page 205
Network/USB - Standard Network, Standard Network
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Using the MFP control panel and menus Standard Network Network/USB - Standard Network Menu item PCL SmartSwitch PS SmartSwitch NPA Mode Network Buffer Purpose Values and descriptions To configure the MFP so it On* automatically switches to PCL emulation when a print job received through the network port requires it, regardless of the default printer emulation. Off MFP examines data on the network interface and selects PCL emulation if the data indicates that is the required printer emulation. MFP does not examine the incoming data. The MFP uses PostScript emulation to process the job if PS SmartSwitch is On, or uses the default printer emulation specified in the Setup Menu if PS SmartSwitch is Off. To configure the MFP so it On* automatically switches to PostScript emulation when a print job received through the network port requires it, regardless of the default printer emulation. Off MFP examines data on the network interface connection and selects PostScript emulation if the data indicates that is the required printer emulation. MFP does not examine the incoming data. The MFP uses PCL emulation to process the job if PCL SmartSwitch is On, or uses the default printer emulation specified in the Setup Menu if PCL SmartSwitch is Off. To specify whether the MFP performs the special processing required for bidirectional communication, following the conventions defined in the Network Printing Alliance (NPA) Protocol. On Off Auto* MFP performs NPA processing. If data is not in NPA format, it is rejected as bad data. MFP does not perform NPA processing. MFP examines the data to determine the format and then processes it appropriately. To configure the size of the network input buffer. Auto* MFP automatically calculates the Network Buffer size (recommended setting). 3K to maximum size allowed User specifies the Network Buffer size. The maximum size depends on the amount of memory in your MFP and the size of the other link buffers. To maximize the range for the Network Buffer size, disable or reduce the size of the USB buffer. Menus 205