Standards-Based Grading

Standards-Based Grading (SBG) is a feature key add-on that you can activate for the DM475V. SBG uses verification algorithms to produce well-defined, consistent results from the image of a code captured by a barcode reader in a real-world setup. SBG is the closest way to achieve verification results without having to conform to specific lighting angles, distances, or every International Organization for Standardization (ISO) standard parameter.

The DM475V with ISO-compliant lighting meets the ISO or industry application guidelines. However, not all applications are able to use ISO-compliant verification due to mounting restrictions or barcode placement. By removing the lighting attachment component, SBG allows you to create a custom lighting setup for specific application needs. You can also use the liquid lens, expanding the field of view and depth of focus capabilities.

Note: SBG is a solution to produce reliable barcode verification results in situations where ISO/IEC compliance is not required, but SBG cannot provide true verification results.

SBG is ideal to use when existing barcode quality software, such as Process Control Metrics (PCM), is not reliable enough, and ISO compliance is not required or possible. With SBG, the reader can be calibrated to unify the cameras measurement of reflectivity levels and all ISO quality parameters are reported.

The following table compares PCM, SBG, and ISO-compliant verification, with the verifier as the baseline:

Capability Reader PCM SBG Verification
Reads Codes
Validates Data
Code Quality Feedback
ISO Parameter Grades Some
Calibrated
Advanced Code Diagnostics
Uses ISO Standard Decode Algorithm
Fixed Angle Lighting
Fully ISO Compliant

PCM uses proprietary algorithms to provide simple code quality feedback. Unlike SBG, PCM does not have a calibration process, does not follow the ISO grading algorithm requirements, or report every quality parameter. While PCM results can provide a good idea of code quality, the results can also vary significantly between setups and hardware used.

SBG works within space constraints where the distance and angle between a reader and a code are inconsistent with the standard verifier setup.

With SBG, you can access the same robust software algorithms and user interface as Verification but without the lighting and fixed focal distance restrictions. Standardization makes Verification results from verifier to verifier more consistent but limits the type and placement of barcodes that can be verified. Use SBG to get the reliability of ISO-compliant verification without the limitations.