Manual No. | NFT 2100 CCD Fixed Mount Barcode |
Scanner |
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Tips for Verifying the Presence of a Bar Code
If the scanner is operated in the “trigger enabled” mode and the trigger is activated, one of three conditions may occur:
A bar code is scanned and decoded. | Decoded data is | |
transmitted | ||
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A bar code is scanned but is not decoded | No data is transmitted | |
(e.g., print quality was poor) | ||
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No bar code is present | No data is transmitted |
In some applications, when no data is transmitted, it may be important to know why. Was there a bar code present that could not be decoded, or was no bar code present at all?
This requirement is common in applications such as automated blood analysis equipment. Test tubes containing blood samples from many different people are loaded into a rack for automatic analysis. The bar code on each tube ties that sample and the results back to a specific individual. If no bar code data is transmitted it is critical to understand the reason.
Your Opticon scanner, when operated in the Trigger Enabled mode, can be programmed to transmit an error message indicating whether or not a bar code was present. See Section 33 of Appendix C of this manual for details.
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