System and method for graphically specifying hardware timing and triggering. The protocol independent interface may include a means for receiving, at the GPS interface, the protocol aiding data received at the call processor, means for converting the received protocol aiding data to interface data that is transparent to the Geolocation Server Station protocol, and means for passing the interface data to a GPS module. A noise reduction unit on a more upstream side has a larger maximum value of the intervals. The plant estimate of the transfer function relating the actual position signal to the feedforward signal is determined off-line and stored for use by the adaptive filter in adjusting its parameters during operation. The method involves the following steps: a liquid flows through the flow channel; a characteristic depending on the flow resistance of the flow channel in the component is determined; and the flow channel is machined by means of a working method until said characteristic reaches a pre-determined nominal value. The unloading system is also adapted for entraining material that is discharged through a material outlet in the material conveying conduit and conveying such material to the discharge end of the conduit.