ABSTRACT
Mainly single A/D converters with a multiplexer for several analogue input variables are used in practical applications. The purpose of the multiplexer is to apply the input variables to the converter in turn for sampling. Whatever the method, the output of an A/D converter is digital signals in the form of words of corresponding length and the point at which digital processing starts. Verification is the operation of checking whether the digital form of the input variable contains an error. Error correction must be based on the redundancy of data in relation to the minimum amount of essential information. The formation of “forbidden zones” as a method of verification involves the establishment of codes when estimating the transmission errors of the individual signal Bits. A much more effective but complicated code is called the “same index code”. It relies on the fact that the same number of ones must exist in every word.
