Hand Held Products 2020, 4620 system manual Aimer Mode, Centering

Aimer Mode

This feature allows you to lower peak current during scanning by alternating the aimer and illumination LEDs. When the Interlaced bar code is scanned, the aimer and illumination LEDs are not allowed to be on at the same time. While this does limit peak current during scanning, the imager performance may be slower. When the Concurrent bar code is scanned, the aimer and illumination LEDs are allowed to light at the same time. Select Off if you don’t want to use either aimer mode.

Off

* Concurrent

Interlaced

Centering

Use Centering to narrow the imager’s field of view to make sure the imager reads only those bar codes intended by the user. For instance, if multiple codes are placed closely together, centering will insure that only the desired codes are read. (Centering can be used in conjunction with Aimer Delay, page 4-10, for the most error-free operation in applications where multiple codes are spaced closely together. Using the Aimer Delay and Centering features, the imager can emulate the operation of older systems, such as linear laser bar code imagers.)

In the example below, the gray area is the full imager field of view and the white area is the centering window. Bar Code 1 will not be read, while Bar Code 2 will be.

Bar Code 1

Bar Code 2

IMAGETEAM™ 2020/4620 System Manual 4 - 11