50-GHz-bandwidth, sequential-sampling DSOs test 10-Gbps network components

摘要

Of all digital scopes, only sequential equiva-lent-time-sampling instruments offer band-widths as high as 50 GHz. This capability makes such scopes the instruments of choice in applications of rapidly growing importance—electro-optics, for example. Yet, because these scopes work only with repetitive waveforms and take just one sample during each input-signal iteration, they lack the quick response of lower bandwidth, real-time- and random-sampling instruments. This characteristic limits sequential-sampling scopes largely to applications that need extraordinary bandwidth.