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How to choose the cash register scanner
Release time£º2014-6-27
First, when the optional scanner, must consider the interface to match the case of the cash register
Second, Avision scanner is the use of optical coupling (CCD) principle, barcode imaging, and then decoded. Its advantages are: no shaft, no motor, long life; cheaper prices. When selecting Avision scanner, the two most important parameters are:
1), the depth of field
Since the optical coupling (CCD) imaging principle is similar to a camera, if you want to increase the depth of field, the corresponding lens to increase, so that the volume is too large Avision scanner is not easy to use operation. Excellent Avision scanner should not be close to scan the bar code label reads, and moderate size, easy and comfortable to operate.
2), the resolution
If you want to improve Avision scanner resolution imaging system must increase the photosensitive member unit pixels. Cheap Avision scanner is usually 500 pixels (pixel), reading EAN, UPC bar code and other commercial enough for the other bar code reading system will be more difficult. Avision scanner mid 1024 pixels as much, some even up to 2048 pixels high, the unit can distinguish the narrowest element of 0.1mm barcode.
