Microscan MS-Q Imager Manual do Utilizador descarregar pdf (Página 127)

Advanced Operations

Symbol Readability Index

The Readability Index provides a measurement of a specific symbol’s readability. It is

specific to the MS-Q Imager and should not be confused with a verification quality

measurement.

The Readability Index is a blend of information obtained from the internal operations

of the decoding algorithm relating to contrast, symbology construct, error detection,

forward error correction (if applicable), and other symbology-specific characteristics.

The Index is a score on a scale of 1 (very poor) to 100 (very readable). Due to the

effects of motion, skew, reflection, focus, and ambient light, the Readability Index on

the same symbol may vary somewhat from read to read. However, a poor contrast or

damaged symbol will score lower than a high contrast undamaged symbol. The Index

can be used as a quick check on the reliability of label generation or marking systems.

When used in conjunction with a stand and constant ambient light, the Index provides a

symbol quality-assurance tool and check-point for feedback to an overall symbol or

marking quality control system.

The Readability Index is enabled by first reading an XML rule into the permanent

Imager memory.

Symbol Readability Index Rule

The Imager will store the rule and reset, but will not output the Readability Index until the

Enable Readability Index Output

symbol is read. Once read, each time a data symbol

is read, the index will be output, followed by a comma, followed by the decoded data.

Enable/Disable Readability Index Output

When enabled, the Imager will continue to output the Readability Index upon every

read until disabled, either by reset or by reading Disable Readability Index Output.

This feature available for Basic Mode only.

Enable Symbol Readability Index Rule

Enable Readability Index Output Disable Readability Index Output

(Microscan)

Readability Index Output:

100 (Symbol Quality), Microscan (Symbol Data)

Example:

With Readability Index Rule

enabled, decoded symbol data

output will be accompanied by

the 0-100 readability rating.

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Microscan MS-Q Imager Manual do Utilizador Página 127