A mixed signal oscilloscope (MSO) option for the R&S RTO oscilloscope provides 16 digital logic channels with a 400-MHz input frequency. Equipped with the MSO option, the RTO allows time correlation between the instrument's analog and digital sections. The option comes with hardware-based acquisition, trigger, and processing units and enables acquisition rates of over 200,000 waveforms per second. ROHDE & SCHWARZ INC., Columbia, MD. (888) 837-8772.