1. DS5502 Fixed Mount Scanner Product Reference Guide
  2. Data Capture
  3. Illumination Control
  • DS5502 Product Reference Guide
Illumination Control

Illumination Control

The device can capture images with the illumination subsystem turned on or off, accommodating images that are close to the wavelength of illumination. For example, because the scanner uses green LED illumination, it may be desirable to shut it off when capturing an image printed in green ink.
It is recommended to turn off LED illumination and provide a minimum of 30 fcd ambient light on the document surface when taking images of documents. Even a small amount of dust or fingerprints on the scanner window can scatter the LED illumination and create glare in the image. The glare reduces the quality of document images but does not affect barcode reading.