User manual AVISION AV25

[. . . ] 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. However, there is no guarantee that interference will not occur in a particular installation. 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. * Increase the separation between the equipment and receiver. [. . . ] For Windows 3. 1 or Windows 3. 11 (See Figure 3-1, 3-2) 3. From the File Menu, choose RUN, type d:\driver\av25\setup. exe, and then click O. K. 3-1 For Windows 95 3. Press the Start button, choose RUN, type d:\driver\av25\setup. exe, and then click O. K. Follow the instructions on the screen to complete the installation (usually just clicking O. K. will complete the installation). Fig. 3. 2 3-2 3-2 Uninstall the Scanner You can uninstall the scanner by double-clicking on the Uninstall icon stored in the AV25 Driver group. . . . 3-3 Chapter 4 Scanner Operation There are two types of application software interface to use with the AV25 scanner. TWAIN is the most popular interface among image-editing application software, while ISIS is most popular among archiving application software (OCR). Scanning Images from within an Application (TWAIN) 1. 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 you can choose for bringing an image into your application. You need to select AV25 for just once except when you have used the dialog box to select a different source. In that case, you will need to select AV25 as the source again before you can reuse the scanner. Do calibration: Place a sheet of A4-size white paper in the scanner and press the Calibration button to calibrate "whiteness" for the scanner. 4-1 6. 8. Place the image to be scanned face down on the scanner. Avision TWAIN user interface will pop up on the screen. Click on the Prescan or Scan button to get the image. Avision TWAIN user interface: 4-2 4-1 Image Type As shown below, you can select the mode you want to use with your document or image. Just click on the corresponding button. Line art Error Diffusion Halftone Gray Scale Line art Line art includes only black and white areas. There are no intermediate shades of gray in between. Error Diffusion While taking up but a minimum storage space, error diffusion gives good image texture and excellent image details. Halftone Halftone simulates different shades of gray by varying the threshold value of a matrix. Gray (256 levels gray scale) Scanner recognizes each point in the image as a shade of gray (continuous tone). [. . . ] You can find the latest driver and documents in Avision BBS. The communication setting is: 2400-19200 BPS, 8N1S. You will be asked to enter your first name, last name and password at all times. For first-time user, you will be requested of your full name and password. [. . . ]