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Honeywell 1900GHD-2 User Manual Page 223

Area-imaging scanner.
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H - Height of Signature Capture Area
The height of the signature capture area must be measured in inches
divided by .01. In the example, the height of the area to be captured is 3/8
inch, resulting in a value of H = .375/0.01 = 37.5.
K - Gamma Correction
Gamma measures the brightness of midtone values produced by the
image. You can brighten or darken an image using gamma correction. A
higher gamma correction yields an overall brighter image. The lower the
setting, the darker the image. The optimal setting for text images is 50K.
0K Gamma correction off (default)
50K Apply gamma correction for brightening typical document image
n K Apply gamma correction factor n ( n = 1-255)
Example of Gamma
Correction set to 0K:
Example of Gamma Correction
set to 50K:
Example of Gamma Correction
set to 255K:
R - Resolution of Signature Capture Area
The resolution is the number of pixels that the scanner outputs per each
minimum bar width. The higher the value for R, the higher the quality of the
image, but also the larger the file size. Values begin at 1000. The scanner
automatically inserts a decimal point between the first and second digit.
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