test_bg_scan_state.assertReady()
test_bg_scan_state = State.Busy
test_bg_scan_result = None

try:
    r1 = lscan(ao1, (ai1,av1,wf1), 0, 40, 100, 0.05)  
    test_bg_scan_result = "Ok"
except:
    test_bg_scan_result = str(sys.exc_info()[1])
finally:
    test_bg_scan_state = State.Ready