Honeywell 4820 User Manual

8 - 4
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
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
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 (1P).
(Default = 25)
n
D Range: 0 - 255
U - Update Tries
This sets the maximum number of frames the imager should take to reach the
D - Delta for Acceptance. Update Tries is only available when using Photo
Style (1P).
(Default = 6)
n
U Range: 0 - 10
Example of Gain at
1G:
Example of Gain at
4G:
Example of Gain at
8G:
Example of White
Value at 75W:
Example of
White Value at
125W:
Example of
White Value at
200W:

Honeywell 4820 Specifications

General

Wavelength	617 nm
Optical sensor resolution	752 pixels
Bluetooth	Yes
Standard interfaces	USB
Battery type	Lithium Ion
Input voltage	3.7 V
Certification	FCC Part 15, RSS-210, CE, GS, NOM-NYCE, COFETEL, C-Tick
Product color	Black, Grey
Storage temperature (T-T)	-40 - 60 °C
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	0 - 95 %

Weight and Dimensions

Weight	255 g