The HP Agilent 37718A is a single-box portable multi-rate BER and jitter tester up to 2.5 Gb/s (OC-48/STM-16) for development, qualification and manufacture of SONET, SDH, ATM and POS network equipment, sub-assemblies, line cards and devices. Features: ATM and POS test capability to 2.5 Gb/s.Concatenated payloads at all synchronous rates up to 2.5 Gb/s. SmartTest facility for fast test setup. Automatic detection of mixed payload signal structures. Accurate measurement of protection switching times (ring and linear networks). Jitter generation and measurement at all rates (1.5, 2, 8, 34, 45, 140, 52, 155, 622 and 2,488 Mb/s). Jitter testing to ITU-T and Telcordia recommendations. Optical Power Measurement.