Honeywell HH490 User Manual

148 HH490 User Guide
Example:
Exposure at 7874E with fluorescent
lighting:
Exposure at 100E with fluorescent lighting:
G - Gain
Gain is used in Manual Style only (2P). Like a volume control, the gain modifier
boosts the signal and multiplies the pixel value. As you increase the gain, the
noise in an image is also amplified.
1G No gain
(default)
2G Medium gain
4G Heavy gain
8G Maximum gain
Example:
Gain at 1G: Gain at 4G: Gain at 8G:
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 (1P).
(Default = 125)
n
W Range: 0 - 255

Honeywell HH490 Specifications

General

Duplex scanning	No
Maximum scan size	- mm
Optical scanning resolution	1280 x 800 DPI
Scanner type	Handheld scanner
Product color	White
Quantity per pack	1 pc(s)
Sensor type	-
Barcode reader	Yes
Daily duty cycle (max)	- pages
Storage temperature (T-T)	-40 - 60 °C
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	0 - 95 %
Power supply type	DC
Optional connectivity	Serial (RS-232)

Weight and Dimensions

Depth	72.5 mm
Width	125 mm
Height	154 mm
Weight	130 g