The I-30xx scanner interface boards will work in PCI Bus machines.

Installing an I-30xx board is a four-step procedure:

• physically installing the board in your computer;
• connecting the scanner to your computer;
• installing the software drivers;
• testing the completed installation;

In this document, bi-tonal or black and white scanning refer to standard scan mode where each picture element (or pixel) generates one bit of information. This is to discriminate from gray level scanning where each pixel generates one byte (8 bits) of data.
The purpose of this manual is to guide you into the installation process using Dunord supplied scan utilities. Installation procedures for software packages are either included with the installation procedure of the package, or in the README.TXT file that can be found in the main directory of the driver diskette.

Important note!
The content of this document is subject to change without notice.
Dunord makes no representation or warranties with respect to the contents of this document and disclaims any implied warranties of merchantability or fitness for any particular purpose. The risk as to the quality and performance of the Dunord products described in this document lies with the user. Dunord makes not warranty, explicit or implicit, that the interface will meet your requirements.

Dunord's PCI bus Scanner Interface boards will allow you to connect various type of scanners to your PC. Dunord publishes regularly a list of board models with supported scanners.
PCI bus models will work with scanners that operate in single side or duplex mode, scanning images in bi-tonal, gray-level or combined representations (TwinStream™). The Scanner Interface model number will give you information as to the board capabilities. All Dunord's PCI bus Scanner Interface models are numbered in the following way:

I-30DBR-S

Memory requirements vary from one scanner model to the other and are explained in detail in the next chapter.
Once your board has been installed and is operational with Dunord's supplied utilities, follow any specific instructions about loading the Windows driver that may be given in the installation section of the application that will run the scanner.

Dunord's I-30xx family of scanner interface boards rely on the computer onto which they are installed to store the scanned image and to enhance and compress it. This means that the machine must have enough memory to store a single uncompressed image for single side scanners, two for duplex scanners, and two or four in the case of TwinStream models. It also means that the faster the processor, the more throughput can be obtained from the application.

Minimal system requirements are as follows:

• MS-DOS 6.0 and Windows 3.1, or Windows 95.
• A 486 or faster CPU with PCI bus.
• A scanner compatible with the interface model.
• The extended memory manager (xms) must be installed in CONFIG.SYS (DEVICE=HIMEM.SYS)
• Enough memory to store the scanned image(s). The exact amount depends on scanner and interface models, document size and resolution.

The amount of memory required to store the scanned image(s) depends on scanner and interface models, on resolution, document size and whether you are scanning in bi-tonal, gray or both. Dunord driver will ask Windows for fixed memory to store the scanned image. If your computer does not have enough RAM, swapping will occur, or Windows will return an error stating that there is not enough memory available. In both cases you will need to increase the RAM on your computer.
The following examples show image size for various combination of scanner and interface models, resolution, document size and type of image (bi-tonal, gray or TwinStream). Remember that these figures are for the image alone, and that you must add memory requirements for Windows and your application.

The following rule of thumb can be used to determine the memory size of your machine:

• use a machine with 16 megabytes of RAM for scanning in black & white;
• use a machine with 24 or 32 megabytes of RAM for scanning in gray or TwinStream at resolution 300 dpi or less with normal size documents;
• use a machine with a larger memory for scanning in gray or TwinStream at high resolution or with large document size.

4.1 Package contents and physical installation   

When you open the box you should find the following items :

• One interface card.
• One cable
• Driver diskette
• Registration card
• This User's Guide

If you have ordered a duplex TwinStream model (I-3029-x), you will have a second box containing :

• One interface card (secondary)
• One secondary cable

The following table identifies the cable(s) that come with each model. Verify that the cable(s) supplied with your board correspond to the cable model(s) listed in the table. You will find the cable model on one of the connectors.

Dunord supplies a comprehensive set of Windows drivers for imaging applications. This set contains :

• Dunord Windows driver;
• ISIS driver;
• TWAIN driver;
• TMS driver.

The ISIS, TWAIN and TMS drivers are industry standard and interface with Dunord's basic Windows driver. ISIS and TWAIN are included on the driver floppy shipped with the I-30xx Scanner Interface board, while the T MS driver can be obtained from TMS itself.
The procedure to install these drivers is application dependent. Consult the README.TXT file supplied on the driver diskette, or your application installation manual for specific instructions.

5.1 Installing Dunord's basic Windows drivers   

Dunord's Windows driver require eight files that must be copied from the diskette supplied with the board to the hard disk:

• CTL3DV2.DLL
• DUNDLG.DLL
• DUNDLG.HLP
• DUNKERN.DLL
• DUNORD.DLL
• DUNORD.INI
• PCIKERN.DLL
• VSCAND.386 or VSCAND.VXD

The INI file should go in your \WINDOWS directory. All other files should be put in your \WINDOWS\SYSTEM directory.
You must also modify file SYSTEM.INI located in your \WINDOWS directory. Use a text editor or SYSEDIT to add one of the following lines in the [386enh] section of this file.

• device=vscand.386 for Windows 3.1
• or
• device=vscand.vxd for Windows 95

You will need to restart Windows for this change to take effect.
The DUNORD.INI file contains parameters required by DUNORD.DLL to identify the physical environment into which the Dunord board and software must operate on a specific machine.
The DUNORD.INI file shipped with the Dunord board contains the default values for some of the parameters and factory set values for others (they describe board model).

FILE DUNORD.INI

• [Environment]
• ...
• [PCI]
• PCI=1
• [I-2000]
• ...
• Additional parameters may be found in this file. They are either used by application developers or put there by applications. The ones used by application developers are described in the DUNORD.DLL documentation.
  Parameters in the [PCI] section are factory set and should not be modified unless specifically requested by a Dunord technician.
  Before starting your application, you must update DUNORD.INI if required.

5.2 Windows 3.1 considerations

Smartdrive

The default values for Smartdrive use 2 megabytes of memory. On machines having a limited amount of memory, it might be preferable to decrease the buffer size to 512, or even 384 Kbytes. This is done by modifying the Smartdrive line of the AUTOEXEC.BAT file to:

   <path>SMARTDRV.EXE 512 512

Use 384 instead of 512 if you want a smaller buffer. There will be a slight decrease in performance in disk operations.

EMM386

If you do not explicitly define parameters for EMM386 in your CONFIG.SYS, Windows will load it with its own default value. To make sure that no problem is encountered with extended memory, add the following line (or modify the existing one) to:

   DEVICE=<path>EMM386.EXE noems

Enhanced mode

Make sure that Windows is operating in Enhanced mode. You can verify this in the 386 Enhanced utility of the Control Panel.

Once you have installed the interface hardware and driver, you are ready to test scanner operation. The best way to do this is with the Dunord supplied utility S2F.
Install S2F according to the procedure described in the S2F User's Guide, and scan some documents with it. You should be able to see the scanned image on your screen. S2F has the capacity to read in simplex, duplex, bi-tonal, gray scale and TwinStream mode.
Running S2F will let you detect and correct error conditions with your installation. Some of the most common problems are:

• You try to start S2F and the computer displays a message stating that it can't communicate with scanner.

• When you hit Scan, you can see the paper moving or hear the scanner head, but no image is displayed on your screen, or only a partial image is displayed.

• You try to start S2F but you get a message indicating that CTL3D.DLL is missing.

• If you have other problems with S2F, consult chapter 8, What to do in case of difficulties.

Dunord maintains on its Web site a complete set of up-to-date drivers and documentation in electronic format.

Our Web site is:   http:\\www.dunord.com

The following table lists some problems with their most probable causes and solutions. Consult the README.TXT file supplied on the driver diskette for problem information related to specific hardware or software.

Important note for all Bell+Howell scanner interfaces If you obtain a bad or distorted image with a Bell+Howell scanner, it can sometimes be corrected by changing dip switch settings in the scanner.

Bell+Howell scanners with an Ace circuit have one or two sets of dip switches. You must verify the position of one of the switches, and set it properly to ensure proper operation of the interface. If the switch is of the rocking type, the raised part must be the one closest to you. If it is of the sliding type, the button must be pushed away from you.

On a 6338A duplex scanner, there are two of those switches. They are located in a holes set between each pair of connectors on the back panel of the scanner (between the 25 pins and the 37 pins connectors). When you are looking directly into the hole, the switch of interest is the one on the extreme right.

On a 3338A single side scanner, there is no external hole. You must remove the cover to expose the Ace circuit. Looking from the front of the scanner, the dip switches are on the left side of the scanner. The switch of interest is the one closest to the front of the scanner.