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CLIC\SET GIBBS number
Give the number of channels to be masked on each side of the central
frequency, for the correlator subbands which are obtained by juxtaposi-
tion of both sidebands of a common local oscillator. Due to the Gibbs
effect, a few channels are corrupted by a contribution of the image
sideband of the first local oscillator, which may contain signal if the
source has continuum emission. This is the case for the 320 MHz bands
at the Plateau de Bure correlator, as well as the 160 and 80 MHz bands
in some modes.
The GIBBS number is used by further PLOT and TABLE commands. The default
is 0, which is relevant for line sources with no continuum emission.