Techniques for providing ADM functionality to an optical ring are provided. A pipe handling system and method may include or employ the pipe handling device. In the substrate supporting table for the plasma processing apparatus, a cylindrical inner tube, the bellows, an outer tube and a cover member are sequentially disposed concentrically from the inner side, and a drive member to be driven by means of a drive mechanism is attached to the rear surface of the placing table through an opening and the inside of the inner tube. The upper unit assembly includes a top sub and a ball body. The flow control module includes a rotation cover covering the upper portion of the upper housing, a flow control plate pivotally disposed betwee the water division seat and the lower housing. The method further includes determining a crosstalk signal that is generated in one or more of the channels by at least one of communication of the received ultrasound signals along the channels or vibration of one or more of the transducer elements.