Datalogic Scanning 4410 - Manual (Page 36)

Scanning Bar Codes
34 Falcon
®
4400 Series with Windows
®
CE
Orientation
Rotational orientation does not affect the imager module's ability to read bar
codes. For example, the imager can read a bar code when the aimer beam is
parallel to the lines of the bar code. What is important is the location of the
aimer in relation to the center of the bar code. The aiming beam should be
centered over the bar code, but it can be positioned in any direction for a good
read.
Figure 22. Aiming Beam Positioning
The aiming beam is smaller when the imager is closer to the code and larger
when it is farther away. Symbologies with smaller bars or elements (mil size)
should be read closer to the unit. Symbologies with larger bars or elements
(mil size) should be read farther from the unit. To scan a label, hold the imager
at an appropriate distance from the target, pull the trigger, and center the aim-
ing beam on the symbol.
Scanning Illumination
Another feature that can be enabled for 2D scanning is an array of illumina-
tion LEDs. These LEDs provide illumination in dark environments and can
improve scanning performance under certain lighting conditions. By default,
the illumination LEDs are turned on. Illumination LEDs can be disabled
using the PDT parameters. See the PRG for complete information on pro-
gramming the LEDs.
Linear bar codes 2D Matrix symbol