MR8990 DVM Module (for MR8740/41, MR8847A)MR8990 DVM Module Use the DVM Unit MR8990 to measure DC voltages on 2 channels High precision measurement for applications such as investigating minute voltage fluctuations in sensor output For use with the Memory HiCorder (MR8741 8740, MR8827 and MR8847A only) Unlike standard multi channel scan type loggers, these instruments can perform simultaneous sampling High accuracy of 0. 01 % and super high 1. 2 million count resolution High speed sampling at