The model 5410C-89 provides three synchro/resolver -to-digital and three digital-to-synchro/resolver channels with wrap-around self-test and the ability to rotate within a message-based VXI compatible size "C" card. Static angles and various rotational speeds can be independently selected for each angle. Synchro or resolver format can be selected via the bus. This unit automatically senses and adjusts to any line-to-line and reference voltage by auto-ranging the input from 3.5-100V and the reference from 5-115V.