Specifications

By tuning, your DataMan 300 series reader automatically selects the best
settings for the given reading situation, based on parameters of illumination,
camera and decoder properties, and focal distance. Use this feature to create
an optimum setting to read your 1-D or 2-D codes.
You can use any of the following methods to tune your reader:
• Press the Tune button at least for 3
seconds on your reader. The rst press
starts the tuning, and the second
press cancels the tuning, if it is still
ongoing.
• Turn on tuning in the
Setup Tool.
• Start tuning by sending a DMCC, for more information, see the
Command Reference, available through the Windows Start menu.
• Use Input line 1 for tuning. Go to the
Setup Tool’s System Settings pane and
check Tune. You can also use the In1
button on the toolbar.
You can dene a stack of lters to be applied to each image acquired
by your DataMan 300 series reader. You can select the following lters
on the Setup Tool’s Image Filtering pane (under Light and Imager
Settings):
• Equalize
This lter redistributes the brightness values of the pixels in the image.
As a result, the range of brightness levels are more evenly represented.
Use this lter if you have too dark or too bright images.
• Stretch
This lter linearly scales up or stretches the greyscale values in the
input image to the full 256-step greyscale. The result is an output image
with increased contrast.
• Low Pass
Using this lter results in output images where edges are smoothed or
blurred.
• Dilate
This lter increases bright features and shrinks dark features. The result
is an output image with larger areas of bright pixels. Use this lter to
remove dark specks.
• Erode
This lter shrinks bright features and increases dark features. The result
is an output image with larger areas of dark pixels. Use this lter to
remove light specks.
• Open
This lter performs an erosion followed by a dilation to lter out bright
features that are smaller than the size of the processing neighborhood.
The result is an output image with slightly decreased overall brightness.
48 DataMan 300 Quick Reference Guide DataMan 300 Quick Reference Guide 49
DataMan 300 Series Tuning
DataMan 300 Series Image Filtering