Application Overview For any high-speed communications signal, the channel and basic signal characteristics must be assessed for compliance with standards and interoperability with other devices in the system path. Viewing these signals on a wide bandwidth oscilloscope simplifies the task and frees designers to optimize their design and get products to market quicker. Agilent offers a wide range of high quality measurements within one mainframe, the 86100C Infiniium DCA-J wide bandwidth oscilloscope, which characterizes four types of signals described here.