st = Stream("st1",dispatcher)
st.setFilter(get_beam_ok_channel(bunch=1) + " == 1")
c = "SARCL02-DBLM135:LOSS_SIGNAL_RAW"
st.addWaveform(c, c, 1, 2048)   

try:
    st.initialize()
    st.start()
    st.waitCacheChange(10000)    #Wait stream be running before starting scan
    mscan(st, st.getReadables()[1], -1, line_plots= [c,], keep=False, save=False)
finally:
    st.close()