User's Manual

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146 700 Series Color Mobile Computer User’s Manual
2D Imager Overview
The 700 Color optional integrated 2D Imager captures 640x480
256-grayscale images at 20 frames per second. The imager features can be
categorized into data collection features and image acquisition features as
follows:
Data Collection Features
The imager includes a decode engine capable of decoding 2D matrix
symbologies such as Data Matrix as well as the traditional 1D and stacked
symbologies (see the table on the next page for supported symbologies). The
application programming interfaces used to collect bar code data and con-
figure the imager are the same as those used for the laser scanner. This in-
cludes the keyboard wedge as well as the ADC COM interfaces and in-
cludes functionality such as data editing and data filtering. In addition, the
imager has the following configuration features (see “IS9CConfig3 Func-
tions” starting on page 216 for configuration details):
S Aimer LED:
A small, rectangular-aiming LED is displayed periodically during the
image capture and decoding process. The initial duration (after scan but-
tons are pressed) of the aimer LED can be configured. This helps to select
the specific bar code to be scanned with multiple bar codes in the
image.
S Scaled Illumination LED:
When the ambient light is not sufficient to decode the bar code, the red
illumination LEDs will be turned on to brighten the image. The inten-
sity of the illumination LEDs is scaled to brighten the image just
enough for decode. The reduces power consumption and the effect of
specular reflection.
S Window size and position:
The default window size (640x480) can be reduced in size and posi-
tioned. This is useful in applications where multiple bar codes may be
present in the image and the specific bar code must be selected to be
read. For example, the window can be sized and positioned around the
aimer LED. The entire bar code must reside in the configured window
for a good decode.
Omni-directional scanning is a feature that does not require configuration.
1D and s tacked symbologies as well as 2D matrix symbologies can be
scanned with the 700 Series Computer in any orientation. Thus, time is
not needed to orient the 700 horizontal as with laser scanners.