Appendices
E-4
MicroHAWK V320-F / V330-F / V420-F / V430-F Barcode Reader User Manual
E-3 Calibration Options
This command specifies the operation of the calibration feature. The default configuration performs
calibration on gain and symbol type. The calibration process optimizes the gain setting for the
configured exposure.
•Note: If you choose to calibrate the reader by sending a <@CAL> command, a decode is also required for the
calibration process to be completed successfully.
When disabled, gain is fixed and is not part of the calibration process.
When enabled, gain is calibrated to provide the best image quality and performance for the symbol
present in the field of view. Calibration requires that a decodable symbol be placed in the field of view,
as feedback from the symbol decoding process is used to select the best gain setting. If a symbol is not
decoded the process will result in a fail condition. Gain is enabled by default.
Quick Calibrate uses the automatic gain control (AGC) feature of the image sensor to adjust the gain
value such that the current image falls into a desirable region of the image sensor’s sensitivity range,
ensuring optimal image luminance. The image sensor converges on the optimal gain value within a few
image frames.
E-3-1 Gain
Definition: When enabled, gain is calibrated to provide the best available image
quality and performance.
When disabled, gain is fixed and is not part of the calibration process.
Serial Cmd:
<
K529,gain
,exposure,focus position,symbol type,WOI framing,WOI margin,
line scan height,processing>
Default: Quick Calibrate
Options: 0 = Disabled
1 = Enabled (Decode Required)
2 = Quick Calibrate
Disabled
Enabled
Quick Calibrate
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