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Compare Mode
In Compare Mode, the imager attempts to compare the data in two symbols in the field of view. The compare function sets Number of Symbols to 2 at the start of the read cycle to force the image system to capture and process two symbols. At the end of the read cycle, Number of Symbols is re-set to 1. This causes the imager to format the output as if only one symbol was processed. If the data in both symbols is identical, only one data string is sent to the host. If the data in both symbols is not identical (or if there is only one symbol in the field of view, or if there are no symbols in the field of view), the read cycle will result in a No Read.
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