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The Azbil Robust A/D Multiplexer Card (ARMUX) is an input card used in the common card fi le. The ARMUX can be used in both primary and reserve controllers of the Basic (CB), Extended (EC) and Multifunction (MC) controllers. The original analog input cards used in these controllers have well known design and component availability issues. The new ARMUX is a redesigned version of the original A/D Mux card based on the latest technology. With the replacement of older, limited-life technology by today’s state of the art technologies, users of these products can be assured of long-term support and a more robust control system. The ARMUX provides sixteen input circuits that are equivalent to the original design (8 PV / 8 RV) and is compatible with other board types used within these controllers (see note concerning UCIO).