Zebra DS457 User Manual

Imager Preferences 7 - 13
Fixed Gain
Parameter # 568 (SSI # F1h 38h)
This parameter only applies when Decoding or Image Capture Autoexposure is disabled. Gain is a means of
amplifying the raw image data before it is converted into 8-bit grayscale values. Increasing the fixed gain
increases brightness and contrast, but also increases noise (undesired electrical fluctuations in the image)
which makes the image less attractive and/or harder to decode.
To set the fixed gain, scan the bar code below followed by 3 bar codes from Appendix D, Numeric Bar Codes,
in the range of 1 to 100, representing the value. The default is 50.
Exposure Time
Parameter # 567 (SSI # F4h F1h 37h)
This parameter only applies when Decoding or Image Capture Autoexposure is disabled. It configures the
exposure for both Decode and Snapshot modes.
Each integer value represents 100 s worth of exposure. The default value is 100 which results in an exposure
setting of 10 ms.
To set the Exposure Time parameter, scan Fixed Exposure followed by four numeric bar codes representing
the value in the range of 1 - 1000. Insert leading zeros if necessary. For example, to set a Fixed Exposure
value of 9.9 ms, scan 0, 0, 9, 9. See Appendix D, Numeric Bar Codes for numeric bar codes.
NOTE Fixed Gain does not apply in Presentation Mode.
Fixed Gain
NOTE Exposure Time does not apply in Presentation Mode.
Exposure Time
(4 digits)

Zebra DS457 Specifications

General

Type	Fixed bar code reader
Wavelength	655 nm
Sensor type	-
Scanner type	1D/2D
Optical sensor resolution	752 pixels
Standard interfaces	USB
Connectivity technology	Wired
Input voltage	5 V
Power consumption	450 mA
Safety	ETL, VDE, CETL, EN60950, Ctick, VCCI
Certification	FCC, RoHS
Product color	Black
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	-20 - 50 °C
Cables included	USB, VGA
Harmonized System (HS) code	84716070

Weight and Dimensions

Depth	58.4 mm
Width	62 mm
Height	29.2 mm
Weight	111 g