open_valve()

'''set_pol_cplus(offset = None)
set_file('Mn_hyst_plus')
hyst_cont(field_x, 6.8, -6.8, 2.0, [637.8, 637.0])'''


set_pol_cminus(offset = None)
set_file('Mn_hyst_minus')
hyst_cont(field_x, -6.8, 6.8, 2.0, [637.8, 637.0])

'''set_pol_cminus(offset = None)
set_file('Mn_hyst_minus')
hyst_cont(field_x, 6.8, -6.8, 2.0, [639.7, 637.0])


set_pol_cplus(offset = None)
set_file('Mn_hyst_plus')
hyst_cont(field_x, -6.8, 6.8, 2.0, [639.7, 637.0])'''

close_valve()