For your convenience, the display option feature called “LEDs” allows you to select ISO/IEC test criteria yet have the LEDs display bar growth rather than ISO/ IEC pass/fail grade. Refer to "Changing the Output Options" on page
If you set the verifier to use traditional pass/fail test criteria, the color of each LEDs is always the same (first is red, second is yellow, third is green, fourth is yellow, fifth is red). After a scan, one or two of the LEDs flash to indicate the amount of growth or shrinkage. The following table correlates the LED color and the percent tolerance used.
| % of bar growth | LCD bar growth |
LED lit | tolerance used | indication |
|
|
|
Green | 0% to25% | OK! |
Green and yellow | 25% to 50% | OK! |
Yellow | 50% to 75% | |
Yellow and red | 75% to 100% | |
Red | >100% | LO!, HI! |
For example, if you scan a UPC symbol at 100% magnification and the yellow LED on the left center flashes, it indicates that the tested symbol has used approximately 2 mil (2.0 to 3.0 mil [0.002” to 0.003”]) of the total tolerance (± 4 mil [0.004”]) and that the symbol’s bars are too narrow.
If you set the verifier to use ISO/IEC methods to calculate the grade, the color of the LEDs will vary. After a scan, one of the LEDs flashes to indicate the scan grade (ISO/IEC Grade A, B, C or D). For example, if you selected ISO/IEC Grade C as passing and obtained a scan grade of A, the A LED flashes to indicate the scan grade the symbol received. In this case, the A, B and C LEDs will be green to indicate that all three grades are acceptable.
Audio Sounds
The audio signal sounds to indicate the bar code symbol’s status to a battery of tests:
•One long beep followed by one short beep indicates a passing grade.
•One long beep followed by three short beeps indicates a failing grade.
You can easily and quickly perform pass/fail testing by scanning symbols and listening for a set of triple beeps to indicate failure and then review the display for specific information.
4 - 8 | Quick Check® 600/800 Series User’s Guide |
