## The Amplitude Calibrator is too weak for Pointings

In this case, only the cross-correlations are used. Don't forget to apply the SOLVE FLUX command only on a short time interval where the weather conditions: HO vapor contents and phase noise are quite similar.

       - Select the RF bandpass done usually after a FOCUS and a POINTING
       - Select the adjacent Phase Calibrator(s)- it should follow a POINTING

            CLIC\SET RF ON FREQ
            CLIC\SET PHASE RELATIVE
            CLIC\SET BAND DSB
            CLIC\SET SUB L01 TO L06
            CLIC\SET SOURCE Phase_Calib RF_Calib
            CLIC\SET FLUX RF_Calib xx.x     !see flux reports
            CLIC\SET PROC CORR
            CLIC\FIND /SCAN x y     !After a pointing on RF_Calib
            CLIC\FIND APPEND /SCAN v w      !After a pointing on Phase_Calib
            CLIC\SOLVE FLUX

When the flux density of the amplitude calibrator is known, update the CLIC calibration procedure (described in the “Calibration Cookbook”) as follows:

            CLIC\SET SOURCE Phase_Calib RF_CAlib
            CLIC\SET PROC POINT CORR
            CLIC\SET FLUX Phase_Calib xx.x
            CLIC\SET FLUX RF_Calib yy.y
            CLIC\FIND
            CLIC\STORE FLUX (On all cross-correlations)

Now you can proceed to the standard Amplitude Calibration using cross-correlations on the Amplitude Calibrator (see “Calibration Cookbook”).