def create_device(url, parent=None):
    """Create a device form a definition string(see URLDevice)

    Args:                 
        url(str or list of string): the device definition string (or list of strings)
        parent(bool, optional): parent device

    Returns:
        The created device (or list of devices)
    """
    return ch.psi.pshell.core.UrlDevice.create(url, parent)


devices = create_device(["ca://SINDI02-DBLM025:LOSS_SIGNAL_RAW?monitored=true&op=sum" ])  #SINDI02-DBLM025:LOSS_SIGNAL_RAW
try:
    mscan([], devices , 10, -1, save=False)  #ar is ony updated on read
    #tscan( devices , 5, 0.1)
finally:
    devices[0].parent.close()