Wilder Technologies, the leading supplier of electrical compliance testing fixtures for serial data communications, is the first to introduce an ISI channel set for 448 Gb/s per lane electrical interfaces.  This fixture provides a range of insertion losses to emulate short to long channels needed for 448G ecosystem pathfinding development.  Each of the individual channels feature 1.0 mm female connectors, allowing interconnect without moding with frequencies to 110 GHz.  The smooth insertion loss over frequency and excellent return loss allows the channel set to support 448G with PAM4 modulation at 224 Gbaud.