Symbol Ratio Mode
Symbol Ratio Mode is useful for determining how much quality and data security validation will be applied when decoding a Code 39, Codabar, or Interleaved 2 of 5 symbol.
Tight ratios will only decode a high-quality symbol.
Standard ratios will decode most symbols.
Aggressive ratios will not validate the entire symbol before decoding. The ratios are "loosened" to read poor-quality symbols. This setting is not recommended unless users understand the potential ramifications: character substitution rate may increase dramatically when Symbol Ratio Mode is set to Aggressive.