The MTS/T-BERD 5800-100G is the industry's smallest dual-port, multi-protocol 100G handheld network tester, Viavi says, and the one tool that network technicians and engineers need to install, turn-up, and maintain their networks. It is the first field tester that can characterize fiber with a single instrument, and the first that can test bit error rate on any line rate up to 100G, the company adds. The MTS/T-BERD 5800-100G tester supports both legacy and emerging technologies in metro/core, mobile backhaul, and business services installations.