Test and measurement (T&M) were feted as the unsung heroes of 5G at Mobile World Congress 2022, responsible for the rapid roll-out of infrastructure in some markets while also underpinning pivotal aspects such as virtualization and ultra-low latency. T&M is especially critical for Open RAN since this involves interoperability between different vendors at the radio as well as core level, on top of meeting objectives for performance and robustness. This requires being able to test rigorously against much tighter specifications for timing, synchronization and signal integrity, including being able to verify the measurement processes themselves. At least MWC 2022 showed that the key vendors have not been idle over the pandemic, with Germany’s Rohde & Schwarz and California-based Keysight Technologies,…