Twinax SCS Menu Use the Twinax SCS Menu to define how the printer handles SCS data over
the twinax interface. The following table describes the settings you can change
from the Twinax SCS Menu. An asterisk (*) next to a value in the table
indicates the factory default. The Twinax SCS Menu appears only if you have
the twinax network interface card installed. Notes:
1.   To select a new value, press the Enter key when the value is displayed in       the message display area. An asterisk (*) appears next to the value in the
      message display area, indicating that it is now active.
2.   Values set in print jobs (either by the print application or the printer       driver) override Twinax SCS Menu values set at the printer.
3.   For more information about configuring the twinax interface, see       Twinax/Coax Configuration Guide.
4.   If you are unfamiliar with using the operator panel to work with menus,       please read “Using the Operator Panel Keys” on page 22 and “Navigating
      Menus” on page 23 before continuing.
5.   Coax and twinax SCS data streams cannot print to trays that are configured for custom paper sizes. If the requested tray is configured for a
custom paper size, the printer attempts to print from the default tray
(SOURCE in the Paper Menu). If the default tray is configured for a
custom paper size, an operator panel message prompts the user to load
Letter or A4 paper in the default tray in order to print the job. To
determine what type of paper a tray is configured for, see the TRAY1SIZ,
TRAY2SIZ, TRAY3SIZ, AUXSIZE, or ENVSIZE items in the Paper Menu. If
an item is set to CUSTOM, CUSTENV, or SIZE1-SIZ10, it is configured for
a custom paper size. 114    Infoprint 21: User’s Guide