Calibration Options - Omron MicroHAWK Integration Manual

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.
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,symbol type,WOI framing,WOI margin,line scan
height,processing>
Default: Enabled (Decode Required)
Options: 0 = Disabled
1 = Enabled (Decode Required)
2 = Quick Calibrate
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.
Disabled
When disabled, gain is fixed and is not part of the calibration process.
Enabled
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
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.
MicroHAWK Engine Integration Guide
Calibration
5-3