Omron MicroHAWK V320-F User Manual page 280

E-3-2 Exposure
Definition:
Serial Cmd:
Default:
Options:
• 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.
• Note: This table shows guidelines for exposure settings based on various line speeds. The settings shown depend
on the reader's optical configuration and on symbol element size.
Exposure
100,000 – 4,000
4,000 – 1,250
1,250 – 700
700 – 500
500 – 400
Disabled
When disabled, exposure is fixed and is not part of the calibration process.
Enabled
When enabled, exposure 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 exposure setting. If a
symbol is not decoded the process will result in a fail condition. Exposure is enabled by default.
Quick Calibrate
Quick Calibrate uses the automatic exposure control feature of the image sensor to adjust the
exposure 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 exposure value
within a few image frames.
MicroHAWK V320-F / V330-F / V420-F / V430-F Barcode Reader User Manual
Unless the application is static, exposure should be configured based on
the application's line speed. The table below is a general guideline for
exposure configurations at various line speeds.
<K529,gain,exposure,focus position,symbol type,WOI framing,WOI margin,
line scan height,processing>
Quick Calibrate
0 = Disabled
1 = Enabled (Decode Required)
2 = Quick Calibrate
Line Speed
Static
5" / sec
10" / sec
15" / sec
20" / sec
Appendices
E
E-5