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       COMMAND

       aaaalllliiiiggggnnnn,,,, ddddiiiiggggiiiittttiiiizzzzeeeerrrr ooooppppttttiiiiccccaaaallll aaaalllliiiiggggnnnnmmmmeeeennnntttt ttttoooooooollll

       USAGE

       aaaalllliiiiggggnnnn

       DESCRIPTION

       The aaaalllliiiiggggnnnn command is used for checking and adjusting the
       alignment of 4020 Revision A/B (vidicon) and BK model
       digitizers.  It has no practical use with the newer 4020
       Revision C (ccd) type digitizers.

       The alignment procedure is detailed in the Setup and
       Alignment Guide.  Only the software considerations will be
       discussed here.

       The command continuously displays the hardware sssstttteeeepppp values
       being sent to the host computer.  Only the values for
       certain programmed latitudes are displayed.

       To terminate the display, type the usual interrupt key for
       your host.  On HP systems this is the SSSSttttoooopppp key, other Unix
       hosts use the CCCCoooonnnnttttrrrroooollll----CCCC key for interrupt.

































