SK200-UM-251 - Graphtec

9. ADJUSTMENTS USING THE SOFTWARE(5) (6): Y OffsetSensors 1, 3, and 5 are attached 24.5 mm behind sensors 2 and 4 in the direction of the feed.For this reason, there is always a 24.5 mm difference in the level of the scanned image.Thus, 24.5 mm/0.0423 mm (1 pixel) = 579 (approx.) appears in these boxes.In practice, values slightly greater or smaller than the above number will appear due to variations in sensorposition and feed.Keep in mind that with larger values, sensor 1, 3 and 5 images will move farther up. Basically, the physical positions of sensors remain unchanged, and sensors are mountedwith high accuracy. Therefore, if you find that a Y offset is significantly different from "579",you may conclude that feed accuracy requires adjustment.Conversely, if you know that the feed accuracy is correct, you may conclude that the sensorphysical position is incorrect.You can use the correction value "579" to adjust the feed so that there is no misalignment inthe Y direction. This makes it possible to determine the feed, although this is not completelyaccurate. You may use this technique for users who do not demand high accuracy.(7) (9) (11): Starting LineThe distances (numbers of pixels) from the document sensor to each of the image sensors in the direction ofdocument feed are displayed in these boxes.Subtracting value (9) from values (7) and (11) produces values (5) and (6), respectively.If you change values (5) and (6) and press the "Check" button, values (9) and (11) will be calculated andchanged automatically.(8) (10) (12): Starting BitThe image sensors themselves scan areas narrower than the area that can be physically scanned in order toprovide a correction range.The numbers in these boxes represent the numbers of dots from the positions at which the sensors can starttheir scan to those where the sensors actually start the scan.SK200-UM-251-9370 9-17