The 65CS4 is a multichannel, Embedded Grade single slot VXI Instrument Board. It incorporates up to four Synchro/Resolver Measurement channels and up to four Instrument Grade Synchro/Resolver Simulation channels, or up to eight Embedded Grade Synchro/Resolver Simulation channels that can be used independently and/or simultaneously. The internal modular DSP design of the card utilizes a motherboard that may be populated with up to two daughter cards. Each daughter card, instrument grade or embedded grade, may each be populated with S/D, D/S or REF modules, depending on the grade type.