Contact Avcom to request the protocol documentation. Much of the Avcom protocol document relates to the Avcom analyzers with LCD display, but for the basic analyzer without display you only need to focus on several things to communicate with it via serial or ethernet(TCP). Get the Hardware Description from the analyzer to discover what the analyzer is and its current tuning parameters are. Get a Waveform Packet from the analyzer and interpret it for display. For Tuning the analyzer set the desired tuning parameters and send a Change Settings packet to the analyzer.