SET X

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SET X

            CLIC\SET X param1 [param2 ...] [/LIMITS min1 max1 [min2 max2 ...]]

        Choose the parameters to be plotted along X-axes by command PLOT.

        Parameters valid in both TIME mode and SPECTRAL mode:
          AMPLITUDE,  PHASE,  REAL,  or  IMAGINARY:   referring  to   the  visi-
            bility   in   the  spectral window(s) or baseband(s) or IF(s), side-
            band(s),  baseline(s) (or  antenna(s))  selected  by  SET  SPW,  SET
            BBAND,  SET  IF,  SET  BANDS, SET  BASELINES or  SET  ANTENNAS  com-
            mands.   Only  correlation  scans will be plotted, not  autocorrela-
            tions.

          AUTOCORR.    :    the  autocorrelation  power  measured  in   the sub-
            band(s),  antenna(s)  selected  by  SET  SPW (or SET BB)   and   SET
            ANTENNAS commands.  Only autocorrelation scans will be plotted, (in-
            cluding calibration scans), not correlations.

        Parameters valid in SPECTRAL mode only:

          CHANNEL :  channel number in the correlator (use  ony   this   one  if
            Fourier Transform has not been made).

          VELOCITY :  normally with respect to LSR.

          I_FREQUENCY : the intermediate frequency in the data.

          SKY_FREQUENCY  : the sky frequency.  This should be the line rest fre-
            quency if the velocity is correct.

          IF1 : the frequency in the first IF frequency

          IF2 : the frequency in the second IF frequency

          IF3 : the frequency in the third IF frequency

        Parameters valid in TIME mode only:

          U_COORD, V_COORD, RADIUS, ANGLE: referring to cartesian, or polar  co-
            ordinates,  in  the (U,V) plane, of the baseline(s) selected by com-
            mand SET BASELINES.

          TIME: universal time (in hours, origin determined by  the  first  plot
            made, may be reset by PLOT /RESET).

          SCAN:  the scan number

          NUMBER:  the observation number.

          RECORD:  the record number (1 to the number of plotted points).

          HOUR_ANGLE

          DECLINATION

          RMS_PHASE:   the r.m.s.  of the  phase  of  the  average  of  the non-
            flagged  subbands  of  the continuum correlator,  in  current  phase
            units   (degrees   or  radians).   This  r.m.s.   phase  is computed
            during the data compression.

          RMS_AMPLITUDE:  the r.m.s.  of the amplitude of the  average   of  the
            non-flagged   subbands   of  the  continuum  correlator,  in current
            amplitude units  (kelvins  or  janskys).   This  r.m.s. amplitude is
            computed during the data compression.

          DELAY:   as  specified  for  specified  baseline  (differential, A1-A2
            for baseline 12), or for the specified antenna(s).

          LO_RATE:  as specified for specified baseline  (differential,  as  DE-
            LAY), or for the specified antenna(s).

          LO_PHASE:   as  used  for  specified  baseline  (differential,  as DE-
            LAY), or for the specified antenna(s).

          LO1_FREQ: LO1 frequency

          LO1_REF: LO1 ref frequency

          CABLE_PHASE:  as measured for specified baseline (differential, as DE-
            LAY), or for the specified antenna(s).

          CABLE_ALTERNATE: idem for the unused reference

          GAMME:  the current range (1 or 2) of the cable phasemeter.

          TOTAL_POWER:   the  total  power   measured   for   the   given anten-
            na(s), as measured by the connected detectors.

          TOT_SCALE: scaling factor to go from cts to K for total power

          DH_ACTP[1-8]: the total power measured in the autocorrelation (NB cor-
            relator)

          DH_ANTTP: the total power measured in the warm IF cartridge

          LAMBDA,  BETA,  or  FOCUS:  the scanning coordinates for  pointing and
            focussing  scans  (arc  seconds,  or millimeters), for the specified
            antenna,  or  the moving antenna if the given  baseline (if only one
            is moving).

          AZ_CORR: the azimuth collimation correction in arc seconds.

          EL_CORR: the elevation collimation correction in arc seconds.

          FOC_CORR: the Z focus correction in millimeters.

          T00 ...  T09 : general test parameters (in data headers)

          T10 ...  T29 : test parameters (antenna based) (in data headers)

          TREC:  receiver temperature for the given antenna(s).

          TSYS :  Equivalent system temperature for  the  given  baseline  (Geo-
            metrical   mean  of Tsys for both antennas), or for the given anten-
            na(s).

          PAMB, TAMB, HUMIDITY: measured atmospheric parameters.

          WIND_AVERAGE, WIND_DIR_AV, WIND_TOP, WIND_DIR_TOP: The wind in m/s and
            the wind direction in degrees, for 5 min. averages and maxima..

          QUALITY: The observation quality as set with commands TAG or CURSOR.

          AZIMUTH, ELEVATION: Start azimuth and elevation for each scan.

          AZ_ERR, EL_ERR: The tracking errors in arc seconds.

          AZ_PH,  EL_PH:  The azimuth and elevation for each record (as used for
            phase tracking).

          PARAL_ANGLE: Parallactic angle (angle between the  vertical  direction
            and the meridian plane)

          WATER:  Water content of atmosphere (as set by the programmer, or mea-
            sured with given antenna).

          ATM_EMISSION: From the output of the atmospheric monitor (normally the
            1.3mm  receiver).  This is the measured radiation temperature of the
            atmosphere, in Kelvins of Rayleigh-Jeans equivalent  radiation  tem-
            perature.

          ATM_POWER: This is the output of the atmospheric monitor (normally the
            1.3mm receiver). It is the actual counts that appear on the monitors
            during observations.

          ATM_REFERENCE:  The  atmospheric  emission used as a reference for the
            phase correction. This is computed by the command MONITOR. The phase
            correction will be proportional to the difference between the output
            of the atmospheric monitor and this reference value.

          ATM_PHASE: The computed atmospheric phase correction.

          ATM_UNCORRPH: The phase  uncorrected from atmosphere.

          ATM_CORRPH: The phase  corrected from atmosphere.

          ATM_VALIDITY: 0 or 1 whether the phase correction  has  been  declared
            valid or not.

          CAL_PHASE: The phase instrumental calibration curve.

          CAL_AMPLI: The amplitude instrumental calibration curve.

          AIR_MASS: The number of air masses (1/sin(elev))

          GROUND_EMIS:  The  ground  emission in K (calibrated total power, with
            sky emission subtracted).

          EMISSION:  The total power detected in emission in K (ground + sky)

          TDEWAR1, TDEWAR2, TDEWAR3: The temperatures in the 3-stage cryogenera-
            tors.

          TCABIN,  TCHOP,  TCOLD: The temperatures of the receiver cabin, of the
            ambient load, and the equivalent temperature of the cold load.

          WVRTAMB, WVRTPEL: The temperature of the  water vapor radiometer (WVR)
            ambient load and peltier cooler.

          WVRTCAL1,  WVRTCAL2,  WVRTCAL3 : The channel gains for the 3 frequency
            bands.

          WVRREF1, WVRREF2, WVRREF3 : The average counts on  reference  observa-
            tion

          WVRAVER1,  WVRAVER2, WVRAVER3 : The average counts on current observa-
            tion

          WVRAMB1, WVRAMB2, WVRAMB3 : The average counts on  last  ambient  mea-
            surement

          WVRTREC1, WVRTREC2, WVRTREC3 : The receiver temperatures

          WVRFEFF1, WVRFEFF2, WVRFEFF3 : The coupling factors to sky

          WVRMODE : The calibration mode

          WVRH2O, WVRPATH : The precipitable water vapor and corresponding path-
            length

          WVRTSYS1, WVRTSYS2, WVRTSYS3 : The system temperatures

          WVRDPATH1, WVRDPATH1, WVRDPATH3 : The Kelvin to water vapor pathlength
            (model)

          WVRFPATH1, WVRFPATH2, WVRFPATH3 : The Kelvin to water vapor pathlength
            (empirical)

          WVRLIQ1, WVRLIQ2, WVRLIQ3 : The Kelvin to liquid water emission

          WVRDCLOUD1, WVRDCLOUD2, WVRDCLOUD3 : The Kelvin to liquid water  path-
            length (model)

          WVRTATM : The temperature of atmosphere

          WVRQUAL : The  quality code

          DH_WVR1, DH_WVR2, DH_WVR3 : counts of each WVR channel

          DH_WVRSTAT :  status word

          WVR_PHA_M : The WVR phase value (model)

          WVR_PHA_E : The WVR phase value (empirical)

          WVR_PHA_C : The WVR phase value due to Cloud (Model)

          tatm_s,  tatm_i  : The temperature of the atmosphere in the signal and
            image band

          REFC1, REFC2, REFC2: refraction coefficients.

          REFRACTION: refraction correction.

          ATTENUATION: attenuation in the warm IF cartridge

          LILEVL[01\-12]: tweak level (LSB for DSB correlator)

          LILEVU[01\-12]: tweak level (USB for DSB correlator)

          TIM[01\-04]: timing parameters

          LASER_LEVEL : optical power in the fiber optic Rx

          HIQ_ATTEN[1-2]: high-Q cable attenuation

          WIDEX_TEMP[1-4]: WIDEX unit temperatures

          INCLIX, INCLIY: station inclination (/X,/Y)

          INCLI_TEMP: inclinometer temperature

        The available parameters are the same as with the SET  Y  command.   De-
        fault is SET X TIME.

        The  /LIMITS  option  is used to specify fixed limits, e.g.: "SET X TIME
        /LIMITS t1 t2" where t1 and t2 are the time limits to be  used  in  this
        example.   The  codes "*" and "=" may be used. "*" means that the limits
        are automatically adjusted to the data,  separately  in  each  box;  "="
        means that common limits to all boxes are computed.

        For  time-like  plots,  the defaults are "/LIMITS * * ".  For frequency-
        like plots, the defaults are "/LIMITS = =".