Evaluating test results
After the bar code has been placed under the scan head (when using the Static Bar Code Evaluation method) or the bar code document has been fed into the transport (when using the Dynamic Bar Code Evaluation method), the following message will be displayed:
Bar Code Type=
Please wait…
After approximately 30 seconds of processing time, the results of the bar code evaluation will be displayed or a message indicating the bar code was not read will be displayed.
If the display indicates the bar code was not read, it could be for one of the following reasons:
∙The type of bar code placed under the scan head was not the type indicated in the status display.
Action: Verify the type of bar code placed under the scan head.
∙The bar code was not positioned properly under the scan head.
Action: Verify the position of the bar code placed under the scan head.
∙The bar code quality is poor.
Action: Perform required maintenance.
If the bar code evaluation results are displayed, the following information will help you evaluate these results.
Grade= | W/N= | :1 | Contrast= % |
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NEW= | MOD= | % | DEF= % | RMIN= % |
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Grade — indicates the overall grade of the bar code evaluation. This grade is based upon the field values that appear in the remainder of the display. The fields which appear in the remainder of the display are either dimensional or reflectance fields.
Each of the reflectance field values are converted to a letter grade (where A is the highest and F is the lowest). The lowest letter grade assigned to any one of the reflectance fields is the overall grade assigned to the bar code.
Dimensional Fields (Pass or Fail)
W/N — the average ratio of wide element widths to narrow element widths within a bar code. The ratio is calculated for both bars and spaces; the smallest of the two ratios is displayed.
New — the measure of the smallest
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