self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
# determine the daughterboard subdevice we're using
self.subdev[0] = usrp.selected_subdev(self.u, options.rx_subdev_spec)
self.subdev[1] = self.subdev[0]
self.cardtype = self.subdev[0].dbid()
else:
self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
# determine the daughterboard subdevice we're using
self.subdev[0] = usrp.selected_subdev(self.u, options.rx_subdev_spec)
self.subdev[1] = self.subdev[0]
self.cardtype = self.subdev[0].dbid()
else: