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SET SUBBANDS
CLIC\SET SUBBANDS n1 n2 ... [/WINDOW f1 l1 f2 l2 ...]
CLIC\SET SUBBANDS ALL
CLIC\SET SUBBANDS EACH
CLIC\SET SUBBANDS LINE|CONT
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: if e.g. units 1 to 5 were used on Receiver 1 and units 6 to 8 on
Receiver 2, the corresponding subbands will be L01 to L05 for the Re-
ceiver 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 ALL will automatically select all the subbands in the first
scan of the current index, for each command accessing the data. The sub-
band 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 data.
The subband are NOT concatenated (equivalent to e.g. SET SUBBANDS L01
L02 L03 L04 L05 L06).
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
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
2011-09-07