Test 9: Oscilloscope View This test contains a Software Oscilloscope that allows you to check and adjust the CCD-Cameras. The following functions can be selected from the Test Program Menu. ● Uncorrected or Corrected Light Profile. ● Red, Green, or Blue Color Channel. ● Special Detail Views for Light Profile, Scan Width, and Vertical Positioning. ● Forward / Reverse controls for the Camera Motor. ● Save screen images. ● Print screen images. The content of the Detail Views is marked on the upper overview window by red vertical lines. The continuous lines refer to the left Detail View and the dashed lines to the right Detail View. Test 11:
Stitching and Vertical Alignment This test is also included in the Scanner Maintenance Software. This test performs Automatic Vertical Alignment and Horizontal Stitching. Once the test has been started: ● Insert Calibration Sheet. ● Select Vertical Alignment to align the cameras. ● Select Horizontal Stitching to stitch the cameras. The screen image can be saved or printed. This test allows manual setting of the Stitch Values. The Stitch Values are stored in the Flash Memory on the Driver Board. The Vertical Alignment may be adjusted manually by controlling the Camera Motor from the control field ' dddd>>' .
The two buttons marked ' ' >' are used to start the motor and to determine the direction of rotation. When started, the motor runs for dddd mili-seconds as entered into the control field. Test 12: Adjustment of Y-Axis Scaling This test allows you to adjust the Y-Axis Scaling. The scaling (dpi) in the mechanical scan direction (Y-Axis) depends on the speed of the stepper motor relative to the scanline Exposure Time. The default motor speed can be changed ± 1%, either from Test 12 or by using the ‘ Scanner Setup/Correction factor … ’ option of SW copying. The correction factor is stored in the Flash Memory on the Driver Board. Test 20:
Noise Test The purpose of this test is to detect and locate the possible cause (dust, dirt, scratches,..) of vertical lines running from top to bottom of the scanned image. When the test is executed, it scans the White Calibration Area of the Calibration Sheet and displays, for each color channel, the graytone values of each separate pixel averaged over the scanned band. The displayed image of the Calibration Sheet will be superimposed by low level noise caused by the CCD chip, and larger spikes most likely caused by dust, dirt, scratches, or similar defects on the Glass Plate. In rare cases, larger spikes may be caused by dust, dirt, or pixel faults on the CCD chip.
ENWW Using the Service Tools from the Touchscreen 5