TheAgilent HP 4972Ais a refurbished LAN Protocol Analyzer that captures and displays frames integral to communication between network systems and devices. Other Info:TheAgilent HP 4972Acan be used for ETHERNET, IEEE, 802.3, and StarLAN local area networks （with appropriate interface）. Statistical measurements provide information on fundamental parameters that instantly characterize network performance. Messages can also be transmitted in order to test system responses or simulate heavily loaded network conditions. Also can simultaneous transmit and receive.