Barcode Scanner Basic Parameter Concept

- Jan 10, 2019-

Barcode scanners are devices with very complex parameter settings. These key parameters are also factors that users must consider when choosing to use a bar code scanner, such as resolution, scan speed, scan width and speed. Today, let's take a look at the key parameters of these bar code scanners.

For bar code scanners, the resolution is the correct detection of the width of the narrowest stripe that is read. When selecting a device, the higher the resolution of the device, the better. Instead, select the bar code scanner with the corresponding resolution based on the bar code density used in the specific application. In use, if the resolution of the selected device is too high, the influence of stains, deinking, etc. on the bar code symbol on the scanning system will be more serious.

Scanning depth of field refers to the difference between the farthest distance that the scanning head allows to leave the surface of the barcode and the closest point to which the scanner can approach the surface of the barcode, ensuring reliable reading, which is the effective working range of the barcode scanner. Some bar code scanner scanning equipment does not give a scanning depth of field indicator in the technical index, but gives a scanning distance, that is, the shortest distance that the scanning head allows to leave the surface of the barcode.

The scan width index refers to the physical length value of the bar code information that the scanned beam can read over a given scan distance. The scanning speed is the scanning frequency of the scanning beam on the scanning track per unit time.

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