Certain elements in the scan dump performed at system failure have become so large that a header field which indicates the size of the element is itself too small. A dichroic prism is formed in the shape of a quadrangular prism as a whole by joining four rectangular prisms together. The body element may be configured to allow illumination generated by the illumination source to propagate within and illuminate at least a portion of an outer surface of the body element. Work requests directed to the table are accepted based on the initial throughput constraint. The computer packetizes the shape, velocity, acceleration, and pressure data with a time stamp and an IP address or phone number, encrypts the packet and sends it to a host computer for authentication. The cleaning sheet cleans the connecting end face of the ferrule.