C2R Colibri 5 30-001, User Manual

Page: 96 / 168

Colibri serie 5 : User’s guide
© 2000-2008 C2R Technologie, Sarl. All rights reserved.
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Rev. C

1G
No gain (default)

2G
Medium gain

4G
Heavy gain

8G
Maximum gain
Example of Gain at 1G: Example of Gain at 4G: Example of Gain at 8G:
D - Delta for Acceptance : This sets the allowable range for the white value setting (see W -
Target White Value). Delta is only available when using Photo Style. (Default = 25

nD Range: 0 - 255
L - LED State: Determines if the LEDs should be on or off, and when. Ambient illumination (0L)
is preferred for taking pictures of color documents, such as ID cards, especially when the imager
is in a stand. LED illumination (1L) is preferred when the imager is handheld. LED State is not
available when using Decoding Style.

0L LEDs off (default)

1L LEDs on
T - Wait for Trigger: Waits for a hardware trigger pull before taking the image.

0T Takes image immediately (default)

1T Waits for a trigger pull, then takes the image
U - Update Tries: The maximum number of frames the imager should take to reach the Delta for
Acceptance. Update Tries is only available when using Photo Style. (Default = 6)

nU Range: 0 – 10
W - Target White Value: Sets the target for the median grayscale value in the captured image.
For capturing close-up images of high contrast documents, a lower setting, such as 75, is
recommended. Higher settings result in longer exposure times and brighter images, but if the
setting is too high, the image may be overexposed. Target White Value is only available when
using Photo Style. (Default = 125)

nW Range: 0 - 255
Example of White
Value at 75W:
Example of White
Value at 125W:
Example of White
Value at 200W:
% - Target Set Point Percentage: Sets the target point for the light and dark values in the
captured image. 1 indicates that more pixels at the light end of a range should be used, and 99
indicates that more pixels at the dark end should be used. We do not recommend altering this
setting from the default. To alter grayscale values, Target White Value should be used. (Default =
50)

n% Range: 1 - 99