Avision AVA3 400 - Manual (Page 30)

Scanner Operation
4-3
PC Users
1. Open your application and choose Select Source from the
File menu. If the Select Source command is not available
from the File menu, see the user guide of your application
to learn how the TWAIN link is used.
2. A dialog box appears containing the different TWAIN
sources for you to choose from to bring an image into your
application.