User manual AVISION AV261C

[. . . ] If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: * Reorient or relocate the receiving antenna. * Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. * Consult the dealer or an experienced radio/TV technician for help. FCC CAUTION: To assure continued compliance, (example- use only shielded interface cables when connecting to computer or peripheral devices). Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. [. . . ] "Use" Position Figure 2-1 Unlocking the Scanner 2-2 2. 3 Connecting the Cable Connect the power cable and signal cable as shown below. 1. PC Parallel Port Figure 2-2 AV261C scanner cable connection 2-3 2. 4 Document Placement As shown in Figure 2-3, place the document on the glass with the text facing away from you. 1. Document Figure 2. 3 Document Placement 2-4 3. Scanner Driver Installation To run at optimum speed, the AV261C color image scanner is recommended to have the following minimum requirements: * IBM compatible PC 386/486, Pentium or later; * Microsoft Windows 3. 1, Windows 95, Windows NT; * One printer port available (enhanced parallel port recommended); * 20 Megabytes of available hard disk space for installation; * 8 Megabytes of RAM (16 Megabytes or higher recommended); * A video graphics array (VGA) monitor; * A Microsoft Windows-compatible pointing device (e. g. , mouse); * A CD ROM drive. 3. 1 to-Installation Program Installation procedures of AV261C Scanner driver with Avision Auto-installation Program are as follows: 1. From the File Menu, choose RUN, type d:\driver\AV261C. exe (d represents the letter for your current CD ROM drive). Press the Start button, choose RUN, type d:\driver\AV261C. exe (d: the CD ROM drive in use), and then click O. K. Follow the on-screen instructions to complete the installation. Fig. 3. 2 3-2 3. 2 Uninstall the Scanner You can uninstall the scanner by selecting Start. . . . Programs. . . . Avision Scanner AV261C and double clicking on the Uninstall command from the Avision Scanner AV261C. 3-3 4. Scanner Operation & Document Printing Scanning Images (TWAIN) 1. 7. Open your application and choose Select Source from the File menu. If the Select Source menu options are not available from the File menu, see the user guide of your application to learn how the TWAIN link is used. A dialog box appears containing the different TWAIN sources that you can choose from to bring an image into your application. When you have used the dialog box to select a different source, you will need to select AV261C as the source again before you can reuse the AV261C scanner. Click on the Preview or Scan button to get the image. 4-1 AV261C TWAIN user interface: 4-2 4. 1 Image Type AV261C provides five image types as explained in below: Line art Error Diffusion Scanning Source Halftone Gray Color Scanning Source Two scanning sources are provided- flatbed as well as transparency. Line art Line art presents the image in black and white only and there are no intermediate shades of gray in between. Halftone In addition to the black and white display, Halftone can present a somehow gray shade of image by using different size of dots. Error Diffusion While taking up but a minimum storage space, error diffusion gives good image texture and excellent image details. Gray (4096 levels gray scale) Gray presents a 4096 shades of gray in an image. 4-3 Color The 36 bits True Color presents 68. 7 billion colors and gives much more tonal range and details in a color image. 4-4 4. 2 Scanning Parameters & Image Control Resolution: The number of dpi (dots per inch) that AV261C uses for a scan. Yet up to a certain level, the resolution will not be visually increased but the disk space will be increased. Brightness: Adjusts the lightness or darkness of an image. Contrast: Adjusts the range between the darkest and the lightest shades in the image. The higher the contrast, the bigger the different gray scales. 4-5 Auto Level Auto Area Descreen Color Match Reset Invert Advance_Settings Quality Mode Speed Mode Set Gamma Pixel/Inch/CM Image Information Auto Level: Optimizes the scanned image. Auto Area: Descreen: Automatically sets the whole document as the scan area, no matter what its size. [. . . ] 5-1 6. Troubleshooting If you have any operational problem, please check the following troubleshooting hints. 6. 1 Questions and Answers Question: Why the scanned image always comes out to be too dark?Answer: 1) Modify the Gamma setting to 1. 8 for your monitor and, when printing, set Gamma to 2. 2 for your printer. 2) Use the Brightness setting of the TWAIN user interface to get a brighter image. Question: The scanning speed of my scanner is much slower than that of those installed at other computers. [. . . ]