## Coding an analog variable for constant percentage error |

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Aeronautics and Space analog input variable analog variable analytically and graphically binary code binary system parameters bits required Cliff Goddard Space CODING AN ANALOG CONSTANT PERCENTAGE ERROR D-2257 National Aeronautics designed to cover digital converter discrete outputs required discrete values distinct outputs duces an uncertainty ERROR by Rodger error for system error Q Figure 11 finite number given dynamic range Goddard Space Flight input range input variable produced intervals needed loga logarithmic quantization scheme logarithmic system logR NASA NASA TN NASA TECHNICAL NOTE necessarily some uncertainty number of bits number of discrete number of distinct number of intervals number of quantization OTS price possible error presented both analytically produced the discrete Relationships are derived relationships are presented scale percentage error sequence of discrete Space Administration Space Flight Center system is designed Systems are treated TECHNICAL NOTE D-2257 TN D-2257 National treated which code VARIABLE FOR CONSTANT width