6.6.4 Gain Calibration
Gain is the adjustment for total light or whiteness, as perceived by the cameras, compensating for variations within a camera. With the unit closed and imaging lights on (for at least 10 minutes), the signal level coming from the camera is considered as indicating uniform total brightness or white.
1.Enter clean, uniformly white, paper in the scanner, covering the entire scan window, if you have not yet done so.
2.Activate “Normalize Gain” from the Diagnostic Test’s Camera Calibration submenu. See section 5.1.14.4 for details.
3.Press “Return” for all the prompts.