User manual AVISION AV3200C

[. . . ] AV3200C ADF/Flatbed Desktop Color Scanner User's Manual ( D/N: 250-0358-0 Rev. 2. 0 ) FCC Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communication. [. . . ] iii). Left Guide Figure 2-6 Loading Multiple Document 2-10 2. 7 CONNECTING THE CABLE i). Turning the Power Off Depress the side marked "O" to turn the power off. Connect the power cable and SCSI signal cable as shown in Figure 2-7. Turning the Power On Depress the side marked "I" to turn the power on. SCSI Termination If not, please check The AV3200Ccomes complete with a built in SCSI terminator. If the scanner is the last device in a SCSI chain the terminator should be switched on. If the scanner is not the last device the terminator should be off. Flatbed--use this setting if you are using the flatbed to scan one page at a time. Duplex/One-page--use this setting if you are using the automatic document feeder (ADF) to scan a doublepage document at a time. Duplex /Multi-page--use this setting if you are using the automatic document feeder (ADF) to scan batches of double-page documents at a time. 4-1 4. 2 DETERMINING YOUR RESOLUTION A good control of the resolution results a satisfactory detail of an image that scans. The resolution is measured by dots per inch(dpi). Normally, the greater the dpi number, the higher the resolution and the image file size. Be aware that the greater resolution takes more time, memory and disk space, therefore, up to a certain degree of dpi, the resolution will not visually be improved, on the contrary, it makes your files more unmanageable. Resolution: 50 dpi Resolution: 100 dpi 4-2 Tips: 1. For your information, an A4 size color image scanned at 300 dpi at True Color mode consumes approximately 25 MB of disk space. A higher resolution (usually means over 600 dpi) is recommended only when you need to scan a small area at True Color mode. 2. You can also refer to the following table to choose a proper resolution while applying your image to other application. Image Scanner Settings Type Application LineArt File, Fax, E-mail Your Document View, Copy, Edit Your True Color Color Picture LineArt OCR* Your Document Resolution (dpi) 200 100 300 *OCR: Stands for Optical Character Recognition, the process to convert an image to a text format. 4-3 4. 3 SELECTING A PROPER IMAGE TYPE Select image type through the mode from the scanner user interface for your own purpose. Each image type is described as follows: Line art(Black and White) LineArt presents the image in black and white only and there are no intermediate shades of gray in between. That means each pixel of the image is 100% black or 100% white. LineArt is the best choice of image type if you want to scan text, pen or ink drawing. Since only 1-bit of black or white information is required for each pixel*, the disk space required for saving lineArt image is only about 1/24 of that required to save 24-bit true color images. Lineart Image *Pixel: A combination of two words: picture and element, a pixel is a single dot on a computer display or in a digital image. 4-4 Halftone In addition to the black and white display, Halftone simulates gray scale by using different size of dots. Particularly when you view the image at a certain distance, it looks very closely like a gray image yet it consumes the least disk space. Halftone is the picture that we usually see in newspapers or magazines. Since Halftone is one type of black and white image, the disk space required to save a halftone image is 1/24 of that required to save a 24bit true color image. Halftone Image 4-5 8-Bit Gray A single-channel image consists of at least 256 shades of gray. [. . . ] b) Remove the multi-fed sheets of paper. d) Flatten the corners and edges; loosen the paper before reloading it in the paper guide. e) Check the feeding roller condition and do the cleaning if necessary. 6-2 Question: Answer: Paper becomes skewed in the scanner. a) Check the feeding roller condition; do the cleaning if necessary. [. . . ]