Lexmark 1200 - Manual (Page 58)

44 Chapter 2: Changing printer settings
Serial Buffer Disabled
Auto*
3K to maximum size allowed
You can configure the size of the serial input buffer to meet the requirements of your system.
If the limited size of the input buffer is preventing you from continuing work in your application
each time you send a job to the printer, you may want to increase the buffer size.
The maximum size depends on the amount of memory in your printer, the size of the other link
buffers, and whether the Resource Save setting is On or Off. To maximize the range for the
Serial Buffer size, you can disable or reduce the size of the parallel, network, infrared,
LocalTalk, fax, or other serial buffer. Choose the Auto setting to let the printer automatically
calculate a buffer size proportional to the total amount of available printer memory. In most
cases, Auto is the recommended setting.
See page 67 for a listing of the default buffer sizes for all the interface ports.
Note: Changing the Serial Buffer setting automatically resets the printer.
Job Buffering Off*
On
If you have an optional disk installed in your printer, you can choose to have jobs that are sent
to the serial port spool to the disk. Spooling jobs to disk may decrease the time required for
the printer to accept data from an application, and therefore free the application faster for
other work. Since disk memory provides permanent storage, job buffering to disk also
prevents the loss of print job data if the printer loses power.
The Job Buffering menu item is not displayed if the formatted hard disk is defective, is Read/
Write or Write protected, or if Job Buffer Size is set to Disabled in the Setup Menu.
See page 68 for more information about job buffering.
Note: Changing the Job Buffering setting automatically resets the printer.
RS-232/RS-422 RS-232*
RS-422
Choose the serial communication configuration for your printer. If RS-422 is selected, Serial
Protocol is automatically set to XON/XOFF.
RS-422 Polarity Normal*
Reverse
If you select RS-422 for the serial communication configuration, you can then select Normal
or Reverse polarity.
Serial Menu (continued)
Menu item Values
*Factory default