SDS2-3VA Digital Readout Display And High Precision Linear Glass Ruler From The 1um/5umKA Series An overview of the SINO SDS2-3VA 3-axis DRO digital readout system is as follows: The graphics function is easier to utilize with these features. This is the first facility in China to use a DRO system, equipped with a 16- and 32-bit calculator. Additionally, it has one of the highest input frequencies in the world—up to 5 MHZ with A/B. The SINO SDS2