dry_run = False
do_elog = True

if get_exec_pars().source == CommandSource.ui:
    bph_ref_user = 0.0
    plt          = None
else:
    bph_ref_user = args[0]
    plt          = args[1]

rph_ref_new = rph_ref_guess + (bph_ref_guess - bph_ref_user)
phaseOffset = -rph_ref_new
bph_ref_new = rph_ref_new + phaseOffset
print "Setting phase offset:  ", phaseOffset
if not dry_run:
    caput('SINEG01-RSYS:SET-VSUM-PHASE-OFFSET-BASE', phaseOffset)
    caput('SINEG01-RSYS:CMD-LOAD-CALIB-BEAM', 1)
    
if do_elog:
        log_msg =           "RF phase reference:          %0.1f" % rph_ref_new + "deg \n"
        log_msg = log_msg + "Phase offset:                %0.1f" % phaseOffset + "deg \n"
        log_msg = log_msg + "Beam phase reference:        %0.1f" % bph_ref_new + "deg \n"
        attachments = []
        if plt is not None:
            sleep(0.1) #Give some time to plot to be finished - it is not sync  with acquisition
            file_name = os.path.abspath(get_context().setup.getContextPath() + "/SchottkyScanSetPlot.png")
            plt.saveSnapshot(file_name , "png")
            attachments = [file_name]
        elog("SchottkyScanSet", log_msg, attachments)

show_message("Success setting phase reference")