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SET SUBBANDS

        CLIC\SET SUBBANDS n1 n2 ...  [/WINDOW f1 l1 f2 l2 ...]
        CLIC\SET SUBBANDS LINE|CONT
        CLIC\SET SUBBANDS ALL
        CLIC\SET SUBBANDS EACH
        CLIC\SET SUBBANDS HOR|VER
        CLIC\SET SUBBANDS Q1|Q2|Q3|Q4
        CLIC\SET SUBBANDS NBC1|NBC2

    Selects the subbands for which data will be displayed by  command  PLOT.
    Valid  codes are continuum subbands numbers (C01, C02, ...  C08) or line
    subbands numbers (L01, L02, ... L08). These are logical numbers, so  one
    should  select e.g. L01 to L04 if four correlator units were used, inde-
    pendentely from the physical units actually used. This  is  a  classical
    trap,  especially  with the old receiver system (<2007): if e.g. units 1
    to 5 were used on Receiver 1 and units 6 to 8 on Receiver 2, the  corre-
    sponding subbands will be L01 to L05 for the Receiver 1 scan, and L01 to
    L03 for the Receiver 2 scan.

    Subbands may be grouped by typing e.g. "SET SUBBANDS n1  to  n2  and  n3
    n4".  Here,  two quantities will be plotted. The first one is either the
    average of subbands n1 to n2 and n3 (in time mode), or the concatenation
    of  spectral  data from subbands n1 to n2 and n3 (in spectral mode). The
    second quantity plotted is subband n4.

    SET SUBBANDS LINE|CONT will switch all subbands to their  line/continuum
    counterpart,  e.g. L01 to L04 will be changed to C01 to C04 by SET SUBB-
    BANDS CONT. Done by SET X I_F

    A number of usefule shortenings are available:

      - SET SUBBANDS ALL will automatically select all the subbands  in  the
        first  scan of the current index, for each command accessing the da-
        ta. The subbands are concatenated (equivalent to e.g.  SET  SUBBANDS
        L01 to L06).

      -  SET SUBBANDS EACH will automatically select all the subbands in the
        first scan of the current index, for each command accessing the  da-
        ta.  The  subband are NOT concatenated (equivalent to e.g.  SET SUB-
        BANDS L01 L02 L03 L04 L05 L06).

      - SET SUBBANDS HOR|VER will automatically select (in the first scan of
        the  current index) the subbands connected to the horizontal or ver-
        tical polarization channel (if any). The subbands are concatenated.

      - SET SUBBANDS Q1|Q2|Q3|Q4 will automatically  select  (in  the  first
        scan  of  the  current index) the subbands connected to the selected
        quarter (if any). The subbands are concatenated.

      - SET SUBBANDS NBC1|NBC2 will automatically select (in the first  scan
        of the current index) the subbands connected to the selected narrow-
        band correlator input (if any). The subbands are concatenated.


        CLIC\SET SUBBANDS n1 n2 ...  /WINDOW first1 last1 first2 last2 ...

        The /WINDOW option select the first and last channels to be used for
        the  LINE subbands. There should be one couple of parameter for each
        group of subbands.

        In spectral mode, the window limits may be used to restrict the plot
        to a certain range, e.g.
            SET SUBBANDS L01 TO L02 /WINDOW 10 64

            will  avoid plotting channels 1 to 9 of each of the two subbands
        L01 and L02 (which are here combined to a single spectrum). This may
        be  useful  to flag meaningless channels at the low-frequency and at
        the high frequency ends of each spectral correlator. Note:  this  is
        now done automatically, see SET DROP command.

        In  time mode, the window limits select the data to be integrated to
        compute a single point.For example
            SET SUBBANDS L01 L02 /WINDOW 1 10 1 10 will plot data integrated
        from  the  first  ten channels of the first line subband, as a first
        quantity, and data integrated from the first 10 channels of the sec-
        ond line subband, as a second quantity.

        Note:   if  you want to use both continuum and line subbands, in the
        same plot  page, you should include dummy arguments in  the  /WINDOW
        option for the continuum spectra:
            SET  SUBBANDS  C01 to C10 L01 to L02 /WINDOW 0 0 2 64 (two argu-
        ments are needed for each resulting spectrum).


Gildas manager 2018-08-15