SET FREQUENCY

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SET FREQUENCY

              [ASTRO\]SET FREQUENCY [MainAxis SecondAxis]

        Define the main and secondary frequency frames of  the  current  session
        for  EMIR and NOEMA receiver and backend frequency coverages.  The lower
        axis of the plots is always in the main frequency frame, while the upper
        axis displays the secondary frame.  Possible frames are:
          REST,LSR,RF for the main frame and
          REST,LSR,RF,IF1,IF2,IMREST,IMLSR,IMRF,CHUNK,NULL  (i.e. nothing drawn)
        for the secondary frame.  When CHUNK is chosen, the  chunk  numbers  are
        indicated in the upper axis.

        SET  FREQUENCY  DEFAULTS  comes back to the default (main='REST', second
        axis='NULL').  Note that the main frequency frame defines not  only  the
        lower axis of the plot but also the frame in which input and output fre-
        quencies are given.

        With no arguments, SET FREQUENCY displays the current content of the ax-
        is.