SET PHASE

        CLIC\SET PHASE [ABSOLUTE|RELATIVE] [ANTENNA|BASELINE]
        [INTERNAL|EXTERNAL] [ATMOSPHERE|NOATMOSPHERE] [FILE|NOFILE]
        [WVR|NOWVR] [TOTAL|NOTOTAL]
        [DEGREES|RADIANS] [JUMPY|CONTINUOUS]

    CLIC\SET PHASE ABSOLUTE|RELATIVE

        This command decides whether the phase calibration is applied or not
        to  the  data for plotting and writing the final UV table, in subse-
        quent PLOT and TABLE commands. ABSOLUTE means do not use  the  phase
        calibration  determined  by  the SOLVE PHASE command, RELATIVE means
        apply it.

    CLIC\SET PHASE INTERNAL|EXTERNAL

        Switch between two modes of phase calibration.

        INTERNAL is the standard mode.  In  EXTERNAL  mode  the  calibration
        curve  from  another  receiver may be used (as stored by STORE PHASE
        /RECEIVER r); on the top of this a second  order  calibration  curve
        may be determined (using SOLVE PHASE) and stored as usual. This does
        not erase any INTERNAL calibration curve previously stored.

        For example, using receiver 2:

        SET PHASE INTERNAL RELATIVE: use the  phase  curve  determined  from
        Rec. 2 only

        SET  PHASE  EXTERNAL ABSOLUTE: use the phase curve from Rec. 1 only,
        as stored with STORE PHASE /RECEIVER 1

        SET PHASE EXTERNAL RELATIVE: use the phase curve from Rec 2,  deter-
        mined  on  top  of  the phase curve Rec. 1, by using SOLVE PHASE and
        STORE PHASE with SET PHASE EXTERNAL in effect.

        SET PHASE INTERNAL  is recommended for Receiver 1,  SET PHASE EXTER-
        NAL for Receiver 2.

    CLIC\SET PHASE ANTENNA|BASELINE

        Switch  between Antenna-based and Baseline-based phase calibrations.
        This switch will be active for SOLVE PHASE (calibration curve deter-
        mination),  STORE  PHASE  (calibration curve storing operation), and
        SET PHASE RELATIVE (application).  Both baseline-based and  antenna-
        based calibration curves may be stored alongside in the data header,
        independently of each other. SET PHASE ANTENNA is recommended.

    CLIC\SET PHASE ATMOSPHERE|NOATMOSPHERE

        Force CLIC to use or not the real-time atmospheric phase correction.
        The  atmospheric  phase  correction is based on monitoring the atmo-
        sphere water vapor emission using either the total power measured by
        the  1.3  mm  receivers or the 22 GHz water vapor radiometers. It is
        applied in real-time to each dump before computing the scan-averaged
        quantities  (spectra and continuum); these are further corrected for
        the average atmospheric phase, hence leading to  phases  essentially
        not modified, but to improved amplitudes (correction of the decorre-
        lation). This phase-corrected scan-averaged dump  will  be  used  by
        CLIC after SET PHASE ATM has been issued.

        The  phase  correction  will NOT be used if it has been declared in-
        valid for a given scan, using the command STORE  CORRECTION,  except
        if SET PHASE NOFILE is in effect. See these commands.

        Note  that the continuum 1 sec dumps are not corrected in real-time,
        and are therefore not affected by the  SET  PHASE  ATM  command.  To
        avoid any confusion, SET PHASE ATM forces SET AVER SCAN.

    CLIC\SET PHASE FILE|NOFILE

        Turn ON of OFF the effect of the STORE CORRECTION command.

        If SET PHASE ATMOSPHERE FILE, the information on the validity of the
        phase correction declared by STORE CORRECTION will be used, and  the
        phase  correction will thsu be done only on scans validated by STORE
        CORRECTION.

        If SET PHASE ATMOSPHERE NOFILE, this information will  be  bypassed,
        and the phase correction will be done for all scans.

    CLIC\SET PHASE WVR|NOWVR

        Switch  ON or OFF the off-line atmospheric phase correction based on
        the WVR data. All data (individual as well as  scan-averaged  dumps)
        are  affected.  It  is necessary to have run the WVR command before.
        SET PHASE WVR forces SET PHASE NOTOTAL.

    CLIC\SET PHASE TOTAL|NOTOTAL

        Switch ON or OFF the off-line atmospheric phase correction based  on
        the  1.3  mm total power monitoring. All data (individual as well as
        scan-averaged dumps) are affected. It is necessary to have  run  the
        MONITOR command before. SET PHASE TOTAL forces SET PHASE NOWVR.

    CLIC\SET PHASE DEGREE|RADIANS

        Select the unit in which the phases are plotted.

    CLIC\SET PHASE JUMPY|CONTINUOUS n

        Selects  the  way phases are determined.  With argument JUMPY no at-
        tempt is made to suppress 2pi jumps:  the  determination  is  always
        [-pi,pi].  With argument "CONTINUOUS n", the phase jumps are limited
        to +/- pi, that is the phase is always chosen in the  range  [previ-
        ous-pi,previous+pi],  n being the number of points averaged together
        to estimate the 'previous' phase (default is 1, higher values are to
        be used in noisy cases).