Zebex Z-5112, Руководство пользователя

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2D Image Scan Engine
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ANUAL
Mounting
In this section, we will introduce ways to mount the scan engine into your design.
At the back of scan engine, there are two screw holes reserved for mounting, the scan
engine can be fixed in any position and any angle without any degradation in
performance. And to ensure the scanner reaches its best performance, the following
points need to be followed when mounting the scanner:
To avoid direct sunlight or any other bright light source illuminating.
When placing the barcode label, one must be careful not to over tilt, skew and/or pitch
the barcode.
To avoid putting the scanner in specula reflection position, the CMOS sensor will not
sense the reading of any barcodes if the LED light reflects straight back.
The barcode must be placed within the effective depth of field (D.O.F.) area, the
effective reading distance for the barcode from the scanner. Its theory is like a camera, if
the object is placed within the focal range, and the image appears clearly. But if the
object is outside the focal range, the image then is blurred. And different quality and
density of barcodes could affect its D.O.F; usually a lower piece or high density of
barcode, its depth of field is shorter. It is suggested to avoid using depth of field
extremes range, barcode is easily moved away from the reading range.
For best placing position, please refer to the Decode Depth of Field drawing.
Thermal Considerations
Electronic components in the Z ‐ 5112 will generate heat during the course of their
operation. Operating the Z ‐ 5112 in continuous mode for an extended period may cause
temperatures to rise on APU and decoder chip. Overheating can degrade image quality
and affect scanning performance. Given that, the following precautions should be taken
into consideration when integrating the Z ‐ 5112.
1. Reserve sufficient space for good air circulation in the design.
2. Avoid wrapping the Z ‐ 5112 with thermal insulation materials such as rubber.
3.
Increase the thermal strategy to reduce the scanning engine continuous operating
temperature.