Avision AV620CS User Manual

User’s Manual

AV620CS PLUS

Color Image Scanner

Doc. No.250-0221-E Rev. 1.0

Avision Inc.

Trademarks

Microsoft is a U.S. registered trademark of Microsoft Corporation.
Windows and MS-DOS are trademarks of Microsoft Corporation.
IBM, PC, AT, XT are registered trademarks of International Business

Machines Corp.
Other brands and product names herein are trademarks or registered

trademarks of their respective holders.

Copyright

All rights reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated
into any language or computer language, in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, manual,
or otherwise, without the prior written permission of Avision Inc.

Material scanned by this product may be protected by governmental
laws and other regulations, such as copyright laws, the customer is
solely responsible for complying with all such laws and regulations.

Warranty

The information contained in this document is subject to change
without notice.

Avision makes no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of fitness for a
particular purpose.

Avision shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the
furnishing, performance, or use of this material.

ii

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. 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.

− 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 shield interface cables when connecting to computer or
peripheral devices). Any changes or modifications not expressly
approved by the manufacture of this device could void the user's
authority to operate the equipment. This device complies with Part
15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including
interference that may cause undesired operation.

Responsible Party:

Telephone No.:

iii

AVISION LABS INC.
6815 Mowry Ave. Newark CA 94560,

USA

[phone]

EC Declaration of Conformity

Manufacturer's Name: Avision Inc.
Manufacturer's Address: No. 20 Creation Rd. 1,

Science- Based Industrial Park,

Hsinchu 300, Taiwan, R.O.C.

declare that the product
Model Number : AV620CS Plus

conforms to the following Product Specifications:
Emission: EN 50081-1 (1992)

EN 55022 (Class B) (1994)
(Conducted/Radiated)
EN 61000-3-2 (Hormonics)(1995)
EN 61000-3-3(Flicker) (1995)

Immunity: EN50082-1 (1997)
IEC 1000-4-2 (ESD) (1995)
IEC 1000-4-3 (RS) (1995)
IEC 1000-4-4 (EFT/Burst) (1995)
IEC 1000-4-5 (SURGE) (1995)

Date: December 1997

iv

TABLE OF CONTENTS

1.INTRODUCTION...................................................... 1-1

2.SCANNER INSTALLATION..................................... 2-1

2.1 PRECAUTIONS................................................................2-1

2.2 UNLOCKING YOUR SCANNER........................................2-2

2.3 SETTING SCSI ID.............................................................2-3

2.4 SETTING SCSI TERMINATOR.........................................2-3

2.5CONNECTING THE CABLES............................................2-5

2.6 INSTALLING THE SCSI CARD.........................................2-7

2.6.1 PC USERS................................................................2-7

2.6.2 MAC USER...............................................................2-8

2.7 PLACING YOUR ORIGINAL .............................................2-9

3.SCANNER DRIVER INSTALLATION...................... 3-1

3.1 MAC USERS.....................................................................3-1

3.2 PC USERS........................................................................3-4

3.2.1 BEFORE INSTALLING THE SCANNER DRIVER......3-4

3.2.2 WINDOWS 3.1 OR WINDOWS 3.1X........................3-5

3.2.3 WINDOWS 95...........................................................3-5

3.2.4 WINDOWS 98/ 95 OSR2 ..........................................3-6

3.2.5 WINDOWS NT4.0.....................................................3-7

3.2.6 UNINSTALL THE SCANNER DRIVER......................3-8

4.SCANNER OPERATION.......................................... 4-1

4.1 STARTING YOUR FIRST SCAN FROM WITHIN A TWAIN

OR A PLUG-IN APPLICATION ...............................................4-1

4.2 USING AVISION SCANNER DRIVER USER INTERFACE4-5

4.2.1 CHOOSING YOUR SCANNING SOURCE................4-5

4.2.2 DETERMINING YOUR RESOLUTION......................4-6

4.2.3 SELECTING A PROPER IMAGE TYPE....................4-8

v

4.2.4 ENHANCING YOUR IMAGE................................... 4-13

4.2.4.................................................................................4-13

4.2.5 VIEWING THE IMAGE TOOL................................. 4-24

4.2.6 OTHER TOOLS ......................................................4-25

4.2.7 STARTING FINAL SCAN........................................ 4-26

4.3 USING BUNDLED APPLICATION SOFTWARE..............4-27

4.3.1 INSTALLING THE APPLICATION SOFTWARE......4-27

4.3.2 VIEWING THE ONLINE MANUAL...........................4-28

5.CARE AND MAINTENANCE ................................... 5-1

5.1 CLEANING THE GLASS...................................................5-1

6.TROUBLESHOOTING............................................. 6-1

6.1 FREQUENTLY ASKED QUESTIONS ...............................6-1

6.2TECHNICAL SERVICE ......................................................6-4

7.SPECIFICATIONS ................................................... 7-1

7.1 MODEL: AV620CS PLUS.................................................7-1

INDEX .............................................................................a

vi

1. INTRODUCTION

Congratulations on your purchase of the Avision color image scanner.
Avision is one of the leading companies to make high quality color
image scanners.

To ensure the optimal performance of the scanner, please take a
few minutes to read through this manual before you install and
operate the new scanner. The manual contains valuable
information on how to unpack, install, operate, and maintain the
scanner properly.

AV620CS Plus 1-1

Figure 1-1 in below shows how the scanner is packed. Please
check if all items are included. If there is any item missing or
damaged, please contact your nearest dealer immediately for
replacement.

1

4

1.Scanner

2.CD, Manual,
Registration card

3.Power adapter

4.Scanner cable

2

3

Figure 1-1 Package contents

Note: When you unpack the scanner, retain the packing
material and shipping box in case you may transport the
scanner in the future.

1-2 AV620CS Plus

2. SCANNER INSTALLATION

2.1 PRECAUTIONS

v Keep the scanner out of direct sunlight. Direct exposure to

the sun or excessive heat may cause damage to the unit.

v Do not install the scanner in a humid or dusty place.
v Be sure to use the proper AC power source.
v Place the scanner securely on an even, flat surface. Tilted or

uneven surfaces may cause mechanical problems.

v Keep the shipping box and the material in case you may need

to ship the scanner again.

AV620CS Plus 2-1

2.2 UNLOCKING YOUR SCANNER

To protect the scanning unit from damage during
transportation, a lock switch is designed under the scanner
to keep the scanning unit from moving.To unlock the
scanner, please first place the scanner as Fig. 2-1 and
locate the lock switch at the corner and then move the lock
switch to the “Unlock” position as shown in below.

lock

unlock

Figure 2-1 Unlocking the Scanner

Note: Likewise, if next time you need to transport the scanner, be

sure to move the lock switch to the “Lock” position. Otherwise,
there may be some damage to the scanning unit during
transportation and the manufacturer is therefore not responsible
for this.

2-2 AV620CS Plus

2.3 SETTING SCSI ID

When you have several devices on a SCSI chain, you may have to
adjust the SCSI ID selector setting at the back of the scanner(See
Figure 2-2). This setting assigns a specific "device ID" to the
scanner. If the ID number is duplicate with an existing SCSI device
on the SCSI chain, please select a new ID#.

Note: The factory setting for the scanner is ID# 6. Usually, ID# 0 is
assigned to an internal hard disk drive, and ID# 7, to SCSI adapter or
host. ID# 8 and #9 are not in use.

2.4 SETTING SCSI TERMINATOR

The scanner is equipped with a built-in terminator switch on the rear
side of the scanner(See also Figure 2-2). Move the switch to the
“on” position to enable the SCSI termination or to the “off” position
to disable the SCSI termination. The SCSI termination ensures the
electrical signal flow through the SCSI chain properly.

As a result, if the scanner is the only or final device connected to
your computer, you should enable your SCSI chain to terminate at
the scanner by moving the terminator switch to the “on” position. If
your scanner is linked between the host computer and other SCSI
devices, then the SCSI chain should terminate at the final SCSI
device. In the case, disable your SCSI termination on the scanner
by moving the terminator switch to “off” position.)

AV620CS Plus 2-3

SCSI device terminator and SCSI ID selector

ID 0 1 2 3 4 5 6
SW1 ON OFF ON OFF ON OFF ON
SW2 ON ON OFF OFF ON ON OFF
SW3 ON ON ON ON OFF OFF OFF

SW4(Terminator) ON/OFF

Figure 2-2 Adjust the SCSI ID setting

2-4 AV620CS Plus

2.5 CONNECTING THE CABLES

Be sure the scanner power is switched off.

Connect the power cable and signal cable as shown in Figure 2-3
(single-device configuration) or Figure 2-4 (SCSI chain
configuration).

2

1

5

6

3

1. 25-Pin SCSI connector

2. 25-Pin SCSI connector

3. 25-Pin SCSI cable(supplied)

4. Power cable

5. Host computer

6. SCSI port(to SCSI host adapter)

Figure 2-3 Cable connection (single-device configuration)

AV620CS Plus 2-5

1

8

9

3

5
6

1. Last SCSI device

2. Scanner(SCSI device A)

3. 25-Pin SCSI connector

4. 25-Pin SCSI connector

5. SCSI cable

6. SCSI cable(supplied)

7. Power cable

8. Host computer

9. SCSI port(to SCSI host adapter)

Figure 2-4 Cable connection (SCSI chain configuration)

Caution: Be sure to use the power adapter that comes with the
scanner.The use of different power supply rather than the one
provided with the scanner should cause damage to the scanner and
void the warranty.

2-6 AV620CS Plus

2.6 INSTALLING THE SCSI CARD

2.6.1 PC USERS

2.6.1.1 ADAPTEC AVA-1505AE SCSI CARD

Hardware Installation

1. Turn both your scanner and computer off.

2. Plug the SCSI card in an available slot of your computer.

3. Plug one end of the supplied SCSI cable to the SCSI port at
the back of your computer and the other end to the SCSI port
at the back of your scanner.

4. Turn on your scanner.

5. When the scanner is ready, turn on your computer.

Software Installation

Windows 3.1

If your scanner comes with an Adaptec AVA-1505Ae SCSI card,
then the installation of the SCSI card driver will be complete during
the installation of the scanner driver.

Caution: Before you connect or disconnect the SCSI cable, be sure
to turn both your computer and scanner off. Otherwise, unexpected
damage may cause the scanner malfunction and void the warranty.

AV620CS Plus 2-7

Windows 95

Windows 95 has embedded driver support for Adaptec AVA-1505Ae
SCSI card. When you start Windows 95, the host adapter is
detected and the appropriate driver is automatically installed.

Windows NT

1. Press Start>Setting>Control Panel. And choose “SCSI

Adapter” from the Control Panel menu. The “SCSI Adapter”
dialog box is displayed. Choose Driver.

2. Choose “Add” and “Select manufacturer and SCSI adapter”.

3. Select “Adaptec” as the manufacturer and “AIC-6X60 ISA

Single Chip SCSI Controller” as the adapter and then
Confirm.

4. Follow the on-screen instruction to complete the installation.

5. Restart your Windows NT.

2.6.1.2 OTHER SCSI CARDS

If you purchase your SCSI card separately from the scanner, then
please follow the installation instruction provided by your SCSI card
supplier.

2.6.2 MAC USER

The Mac system already has SCSI controller built in. Connect the
system, therefore, set a different SCSI ID for each SCSI device.

2-8 AV620CS Plus

2.7 PLACING YOUR ORIGINAL

2

Open the document cover and then place your original face down
on the document glass as shown in Fig. 2-5.

Make sure the top of your original is near the document alignment
mark.

3

1. Document cover

2. Document alignment
mark

3. Your original

4. Document glass

1

4

Figure 2-5 Placing the original

AV620CS Plus 2-9

3. SCANNER DRIVER
INSTALLATION

3.1 MAC USERS

The AV620CS Plus scanner must have the following minimum
requirements to run at rated speed as recommended:

• MAC II series; Quadra series, Perfoma series; Power

Macintosh series, PowerBook series or later(excluding
iMac);

• At least 20M bytes of free hard disk space;

• A minimum of 16M bytes of system memory required,

32M bytes or higher recommended;

• Mac compatible display card and monitor with at least

256 colors; thousands colors or million colors display
card recommended;

• System 7 or later;

• A floppy disk drive.

The installation procedures of Avision scanner driver are as follows:

1. Close all the applications including the anti-virus program.

2. Install on your computer the image-editing or scanner-related

application you want to use with the scanner, such as
OmniPage, PhotoShop, etc.

3. Insert “Avision Driver Kit” disk into your floppy disk drive.

The Avision Driver Kit X.x.x dialog box as Fig. 3-1 will
appear. Read "Read Me First" for some valuable information
which you should note.

4. Double click on the “AV Kit X.x.x Installer” icon. AV Kit X.x.x

Installer dialog box will appear as Fig. 3-2.

5. Click Easy Install icon and drag it to the system icon in the

right side. A "Select a folder for plug-in" dialog box as Fig. 3­3 will appear. Select your application folder and select the
"Choose plug-ins" button. The installation will then be

AV620CS Plus 3-1

completed.

6. Choose Restart to proceed your next step.

7. If you want to use other Optical Character Recognition

(OCR)applications such as OmniPage, Xerox TextBridge,
Type Reader, etc., you have to setup the ISIS driver to
access the scanner. The ISIS driver is a file named “Avision
Scan.” To setup, select “Chooser” command from the

“Apple” menu. A dialog box as Figure 3-4 will appear
on the screen. Select the “Avision Scan” icon, ignore the
“Scanner Model” list and the “Set SCSI ID” button, The list of
scanner model will be displayed. Click on the "Set SCSI ID"
button. The "Scanner ID" window as Fig. 3-5 will appear.
Choose "Detect". The current Scanner ID number will be
verified and highlighted. Press OK button. You can then
start your application to use the scanner, or refer to your
application manual for more details.

Figure 3-1 Avision Driver Kit

Figure 3-2 AV Kit X.x.x Installer

Figure 3-3 Select a folder

for plug-in

3-2 AV620CS Plus

Figure 3-4 Chooser

Figure 3-5 Scanner ID

Note: You can find the latest driver in our homepage located at
the World Wide Web(WWW) with the web site:
http://www.avision.com

AV620CS Plus 3-3

3.2 PC USERS

To run the color image scanner at optimum speed, the following
minimum requirements are recommended:

v IBM compatible PC 486, Pentium or later;
v Microsoft Windows 3.1, Windows 95/98, or Windows NT4.0;
v One SCSI card installed one your computer;
v 20M bytes of available hard disk space for installation;
v 16M bytes of RAM (32M bytes or higher recommended);
v A video graphics array (VGA) monitor;
v A Microsoft Windows-compatible pointing device (e.g.,

the mouse);

v A CD-ROM drive.

3.2.1 BEFORE INSTALLING THE SCANNER DRIVER

Before installing the scanner driver, please make sure the following
steps have been performed to ensure a successful installation.

1. Turn off your computer.

2. Connect your scanner correctly to your computer. (Refer to

Chapter 2 Scanner Installation).

3. Turn on your scanner. The READY LED will be flashing to

perform the scanner self-test.

4. Turn on your computer when the READY LED is steadily on.

After the above steps have been proceeded, please follow the steps
below to install the scanner driver on your computer:

1. Start Windows 3.1, Windows 95/98, OSR2 or Windows NT.

2. Insert Avision PaperCom Supreme CD to your CD-ROM

drive.

3-4 AV620CS Plus

3.2.2 WINDOWS 3.1 OR WINDOWS 3.1X

3. From the File Menu, choose RUN. Type “d:\setup.exe” (“d:” the

CD-ROM drive letter in use). Choose “OK”.

4. Follow the on-screen instruction to complete the installation.

3.2.3 WINDOWS 95

3. An “Add new hardware wizard” dialog appears. Choose “Next”.

4. Choose “Other” and then browse your current CD-ROM drive.

5. Select the “Driver” and “Win95” folder then follow the on-

screen instruction to complete the installation.

6. Choose “Finish” at the end of the screen.

7. An installation menu will be automatically displayed. If the

installation menu has not been automatically displayed on your
screen, please press the “Start” button and choose RUN, type
“d:\setup.exe” (“d:” the CD-ROM drive letter in use).
Choose “OK”.

8. Choose “Scanner Driver” and follow the on-screen instruction to

complete the installation.

9. Follow the on-screen instruction to complete the installation.

AV620CS Plus 3-5

3.2.4 WINDOWS 98/ 95 OSR2

3. An “Add new hardware wizard” dialog appears. Choose “Next”.

4. Follow the screen to choose “Search the best driver for your

device” and then choose “Next”.

5. Choose “CD-ROM” and then the “Driver” and “Win98” folder.

6. Follow the on-screen instruction to complete the installation.

7. Choose “Finish” at the end of the screen.

8. An installation menu will be automatically displayed. If the

installation menu has not been automatically displayed on your
screen, please press the “Start” button and choose RUN, type
“d:\setup.exe” (“d:” the CD-ROM drive letter in use).
Choose “OK”.

9. Choose “Scanner Driver” and follow the on-screen instruction to

complete the installation.

10. Follow the on-screen instruction to complete the installation.

3-6 AV620CS Plus

3.2.5 WINDOWS NT4.0

3. Press the Start button and choose RUN. Type “d:\setup.exe”

(“d:” the CD-ROM drive letter in use). Choose “OK”.

4. Follow the subsequent instruction on the screen to complete

the instruction. (Normally just press OK and the installation will
be completed.)

AV620CS Plus 3-7

3.2.6 UNINSTALL THE SCANNER DRIVER

You can uninstall the scanner driver by selecting
Start>Programs>Avision Scanner> Uninstall Driver. And then, follow
the on-screen instruction to uninstall the driver.

3-8 AV620CS Plus

4. SCANNER OPERATION

AV620CS Plus allows you to operate the scanner from within a
TWAIN or plug-in software application. As the scanner driver is not
a stand-alone software, it has to be started from within a TWAIN*-
compliant software application and then the scanner driver is able
to scan and load the image to your computer. The command to
start the scanner driver may vary due to different software
applications. To check the correct command, please refer to the
user manual of your software application.

4.1 STARTING YOUR FIRST SCAN FROM WITHIN A

TWAIN OR A PLUG-IN APPLICATION

MAC Users

1. Start your application(For example, Adobe PhotoShop,
Ulead ImagePals, MGI PhotoSuite and so on.) From File
menu, choose Import command .

2. Select MrScan X.x.x from the submenu of Import.

AV620CS Plus 4-1

3. The Mac Plug-in user interface will pop up on the screen.

4. Place the document upside down on the document glass
with the text facing away from you.

5. Click the Preview or Scan button to preview or scan your
document or image.

Figure 4-1 Mac Plug-in user interface

*TWAIN: Stands for Technology Without An Interesting Name, an
industry-standard protocol which exchanges information between
the application and image acquisition device such as scanners.

4-2 AV620CS Plus

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.

AV620CS Plus 4-3

Select MrScan-Expert as the source.

3. You need to select MrScan-Expert for just once except
when you need to use the dialog box to select a different
source. In that case, you will need to select MrScan-Expert
as the source again before you can reuse the scanner.

4. Place the document upside down on the document board
with the text facing away from you.

5. From the File menu, choose Acquire.

6. Avision TWAIN user interface as Figure 4-2 will pop up on
the screen. Click Preview or Scan button to scan the
document.

Figure 4-2 PC TWAIN user interface

4-4 AV620CS Plus

4.2 USING AVISION SCANNER DRIVER USER

INTERFACE

4.2.1 CHOOSING YOUR SCANNING SOURCE

Two scanning sources are provided - flatbed as well as
transparency. However, if you have not installed the transparency
kit, please leave the source to the flatbed option.

Figure 4-3 Scanning Source

AV620CS Plus 4-5

4.2.2 DETERMINING YOUR RESOLUTION

A good control of the resolution results in 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, and on the contrary,
it makes your files more unmanageable.

Figure 4-5 Resolution Control

Resolution: 50 dpi

4-6 AV620CS Plus

Resolution: 100 dpi

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.

Scanner Settings
Application

File, Fax, E-mail Your Document LineArt 200
View, Copy, Edit Your Color Picture True Color 100

OCR* Your Document

*OCR: Stands for Optical Character Recognition, the process to convert

an image to a text format.

Image Type Resolution

(dpi)

LineArt 300

AV620CS Plus 4-7

4.2.3 SELECTING A PROPER IMAGE TYPE

Select image type through the mode from the scanner user
interface for your own purpose. Please see Figure 4-4 as shown in

below:

Figure 4-4 Image Type

4-8 AV620CS Plus

Each image type is described as follows:

Line art

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.

Figure 4-5 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.

AV620CS Plus 4-9

Halftone

In addition to the black and white display, Halftone simulates
grayscale 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 24-bit true color image.

Figure 4-6 Halftone Image

4-10 AV620CS Plus

Gray (4096 levels gray scale/Internally)

Usually, a single-channel image consists of at least 8-bit or 256
levels of shades of gray in an image. However, AV620CS Plus
with 12 bits produces a Gray image with 4096 shades of gray
between pure black and pure white. Gray is the best choice of
image if you wish to scan a black and white photograph. With
12 bits of color information per pixel, the disk space required to
save a gray image is eight times more than lineArt and 1/3 of
that required to save a 24-bit true color image.

Figure 4-7 Halftone Image

256 Colors

The 256 colors image provides 256 levels of color hues. The
disk space required to save an image in 256 colors is 1/3 of
that required to save a 24-bit true color image.

Figure 4-8 Halftone Image

AV620CS Plus 4-11

True Color

A 36-bit Color image consists of three 12-bit color channels.
The red, green, and blue channels are mixed together to create
a combination of more than 6.8billion(236) colors which give a
more true-to-life quality to the image. True Color is the best
choice if you want to scan a color photo.

Figure 4-9 Halftone Image

4-12 AV620CS Plus

4.2.4 ENHANCING YOUR IMAGE

Brightness

Contrast

Gamma

Highlight

Shadow

Hue

Intensity

Saturation

Brightness: Adjusts the lightness or darkness of an image. The

higher the value, the brighter the image.

Decrease your Brightness Normal Increase your Brightness

AV620CS Plus 4-13

Contrast: Adjusts the range between the darkest and the

lightest shades in the image. The higher the
contrast, the bigger the different gray scales.

Decrease your Contrast Normal Increase your Contrast

Gamma: Adjusts the midtone of the image without losing

details of the lightest and the darkest areas.

Gamma Value: 1.0 Gamma Value: 1.4 Gamma Value: 2.0

4-14 AV620CS Plus

Highlight/Shadow:

Highlight refers to the lightest point in a scanned
image while shadow refers to the darkest point.
Using Highlight and Shadow tool together allows you
to extend the range of color and reveal more details
in a gray or color image.

Highlight: 255/Shadow: 0(Normal) Highlight: 210/Shadow:10

Highlight: 200/Shadow:0 Highlight: 255/Shadow: 50

AV620CS Plus 4-15

Hue: Adjust the hue up to 360§ by clicking your desired

color on the Color wheel or clicking the up or down
arrow button. (Note the level of intensity for the
color will be changed simultaneously when the hue
adjustment is made).

The Color Wheel

Intensity: Adjust the color strength by clicking the Up or

Down arrow button.

Saturation: Adjust the saturation level for the color by clicking

the Up or Down arrow button. The level of
saturation decides if the color is pale or rich.

4-16 AV620CS Plus

Speed Mode

Advance Settings

Color Matching

Advance Settings: (PC)

Click the button and a dialog box in below will be
displayed. This dialog allows you to remove one of
the R(Red), G(Green), or B(Blue) color channel
while scanning. For example, if your image
contains red color text or red color background,
choose the R(Red) channel then any text or
background in red color will be removed. Yet this
function supports only black & white and gray
image. Therefore, be sure to choose any black &
white or gray image type while applying this
function.

Auto Crop

Invert Image

Quality Mode

Tip: An increase of brightness after removing one
of the color channel makes your image clearer.

AV620CS Plus 4-17

Your original with blue color background After click the B(Blue) channel

Your original with red watermark(Do Not
Copy)

After click the R(Red) channel
[The red watermark(Do Not Copy) has

been removed]

4-18 AV620CS Plus

Invert Image: The invert command reverses the brightness and

the color in the image. For color images, each
pixel will be changed into its complementary color
at the command of Invert.

Original After Invert

AV620CS Plus 4-19

Color Matching:

Adjusts the color quality of the image so that it
comes close to that of the original. This function
uses default parameters to adjust the image.

Before Color Matching After Color Matching

Quality/Speed Mode:

Choose Speed Mode if you need to speed up your
scanning task. Choose Quality Mode if you need a
better quality of your scanning result.

4-20 AV620CS Plus

Auto Level: (Mac)

Automatically adjusts the highlight and shadow areas
of the scanned image to give it an optimal effect.

Before Auto Level After Auto Level

Auto Crop: Automatically sets the whole document as the scan

area, no matter what its size.

Before Auto Crop After Auto Crop

AV620CS Plus 4-21

Sharpen: Sharpens the scanned image. Look for more

selections under this item.

Original Extra Heavy

4-22 AV620CS Plus

Descreen: Eliminates the moire patterns* commonly found in

printed matter.

Before Descreen After Descreen

*Moire pattern: An undesirable pattern in a color

printing resulting from incorrect screen angle of
overprinting halftone.

AV620CS Plus 4-23

4.2.5 VIEWING THE IMAGE TOOL

Quick Zoom

Select Scan Area

Zoom

Move Image

Quick Zoom: Provide frequently used magnification ratios (1x,

2x, 4x, 8x, or view the whole image) to perform a
quick enlargement of your preview image.

Select Scan Area:

Select your desired scan area. (Click the button

and place your cursor at the preview area. The cursor

turns a cross sign. Hold your left mouse button
to create your scan area. Release the left mouse
button when the area has been successfully
selected.)

Zoom: Click and place your cursor on the preview area.

The cursor will turn a zoom sign to enlarge or
reduce(press the Alt key) your preview image.

Move Image: Click and place your cursor anywhere on the

preview area. The cursor now turns a hand sign to
allow you to move the preview image to view a
specific portion clearly. (This function is only
available after the preview image has been
enlarged.)

4-24 AV620CS Plus

4.2.6 OTHER TOOLS

Rescale your Image
Lock Image Width & Height
Quick Choice Scan

Unit

Scale: Enlarge or reduce your image in a pre-set proportion

(from 50% to 800%).

Width: Display current image width.
Height: Display current image height.
Unit: A reminder of the measuring system in use. By

clicking on the abbreviation you can change the
measuring system.

Lock Image Width & Height:

Fix your output width and height despite of the scan
size you have selected. Note the scale value will be
changed automatically when you applying this function
and resizing your selected area at the same time.

Quick Choice Scan Size:

Provide frequently used scan size option including
Business Card, 5”x 3”, 6”x 4”, Letter, Legal, B5, A5,
A4, A3, or your current scan area to perform an
immediate selection of your scan size.

AV620CS Plus 4-25

4.2.7 STARTING FINAL SCAN

Preview: Previews your image to allocate the area to be scanned.
Scan: Scans the area with the parameters you have set .
Exit: Cancels the current job.

As shown in the figure below, in the Preview window, you can define
the area to be scanned by dragging the cursor auxiliary lines with
the mouse.

Cursor turns
arrow to resize
the scan area

The preview
Window

4-26 AV620CS Plus

4.3 USING BUNDLED APPLICATION SOFTWARE

In addition to the scanner driver, the software CD contains a variety
of application software to make the best of the scanner. For
example, Xerox TextBridge Classic (the OCR* software), MGI
PhotoSuite(the image editing and personal photo application), or
PaperCom(the office document management application).

4.3.1 INSTALLING THE APPLICATION SOFTWARE

To install the bounded software application, choose “Install
Application” in the installation menu and follow the on-screen
instruction to install the software application respectively.

*OCR: Stands for Optical Character Recognition, the process to
convert an image to a text format.

AV620CS Plus 4-27

4.3.2 VIEWING THE ONLINE MANUAL

To learn how to use the application software, please review the on­line manual by choosing the “Manual” folder in the CD or the “View
Manual” tab in the installation menu as shown in below.

4-28 AV620CS Plus

5. CARE AND MAINTENANCE

5.1 CLEANING THE GLASS

The procedures

Soak a cotton swab with some isopropyl alcohol. (95%)

Open the document cover as shown in Figure 5-1. Wipe the
document glass by moving the swab from side to side.
Close the document cover. Your scanner is now ready for
use.

1

1. Document glass

Figure 5-3 The cleaning area

AV620CS Plus 5-1

6. TROUBLESHOOTING

The scanner will automatically perform a simple self-test each time
it is turned on. This will help to spot major system errors in the
scanner itself.

When the test is initiated, the READY LED is flashing. When the test
is completed, the READY LED is steadily on.

If you have problems with the operation of your scanner, please
check the following troubleshooting hints.

6.1 FREQUENTLY ASKED QUESTIONS

Question: The LED indicates that the scanner is ready, but the

scanner does not respond to the command from the

host computer.

Answer: Please check your SCSI ID# and SCSI terminator (See

Chapter 2 Scanner Installation) and make sure that the
power cable and SCSI card or SCSI cable have all been
correctly and firmly connected(See also Chapter 2).
Then, try the Scan command again, if there is no
response, please reboot the host computer as well as
reset the scanner by turning it off and then on again.

AV620CS Plus 6-1

Question: When the scanner is powered on, it makes noises

and won’t stand ready.

Answer: There are two possibilities:

1) You might fail to push the scanner shipping lock to
its “use” position. If this is the case, pull the scanner
status switch to its “use” position first.

2) The scanner is not placed on an even, flat desktop

surface. This may cause the scanner to
malfunction.

Question: The scanner is powered on, but the lamp does not

light up.

Answer: The lamp is probably out of order. Contact your local

dealer or distributor to replace the lamp. For your
information, the average life time of the lamp is about
15,000 hours and the operating temperature for the
scanner is between 10°C(50°F) and 40°C(104°F).

Question: To get image from the scanner is no problem. But

when scanning, the scanner or the system will often

crash.

Answer: 1) Please check if the cable is firmly seated.

2) Please note only two SCSI terminators can be
connected to your SCSI daisy chain. One is at the end
of the SCSI device, the other already in your host
adapter. (Please see Section 2-4 for more details.)

6-2 AV620CS Plus

Question: While scanning, the scanner often makes noises,

or it scans back and forth.

Answer: Usually this means the memory of your computer is not

enough or the speed of your CPU too slow. Please try
to increase your memory to at least 32M or replace your
CPU with Pentium or later.

Question: Why is it that the scanned image always comes out

to be too dark?
Answer: 1) Modify the Gamma setting to1.8~2.2 for your
monitor and, when printing, set the Gamma setting to 2.2

for your printer.

2) Adjust the Brightness setting from the TWAIN

user interface to get a brighter image.

Question: The scanner works well except for the line art image.

The lines in the image seem to be much thicker than
the original one.

Answer: Increase the Brightness or adjust the Threshold setting

to improve line art image.

AV620CS Plus 6-3

6.2 TECHNICAL SERVICE

Technical support for Avision scanner is provided at Avision
Technical Assistance Center (ATAC). Before contact with ATAC,
please prepare the following information.

v Scanner serial & revision number (located on the bottom

of the scanner)

v Hardware configuration (e.g., your host CPU type, RAM size,

free disk space, display card, interface card, etc.)

v The name and version of your software application
v The version of your scanner driver.

Please contact us at:

US and Canada Area: Avision Labs., Inc.

Address: 6815 Mowry Ave. Newark CA 94560, USA
Telephone number: [phone]
Fax number: [phone]
Web Site: http://www.avision.com
E-mail: [e-mail]

Other Area: Avision Inc.

Address: No.20, Creation Road I, Science-Based

Industrial Park, Hsinchu, Taiwan, R.O.C.
Telephone number: [phone]
Fax number: [phone]
Web Site: http://www.avision.com
Email: [e-mail]

6-4 AV620CS Plus

7. SPECIFICATIONS

All specifications are subject to change without notice.

7.1 MODEL: AV620CS PLUS

Scanner Type Flatbed
Scanning Mode 36-bit color/Internal(24-bit

output)
12-bit Gray scale/Internal(8­bit/output)
Line Art / Halftone

Error Diffusion (single bit)
Optical Resolution 600 * 1200 dpi
Maximum Resolution 19200 dpi
Light Source Cold cathode fluorescent

lamp
Maximum Scanning Size 8.5” x 11.7”

Interface SCSI-2
Power Requirement 100 to 240 Vac, 50 to

60 Hz

Power Consumption 12 watts
Operational Humidity 20% to 80% RH
Operational Temperature 10°C to 35°C
Storage Temperature -20 to 60°C

Dimension 414 x 82 x 306 mm (WxDxH)

Weight 3.9 kgs

AV620CS Plus 7-1

INDEX

2

256 colors · 4-11

A

Advance Settings · 4-17
alignment mark · 2-9

Auto Crop · 4-21
Auto Level · 4-21

B

Brightness · 4-13

C

Color Matching · 4-20
Color Wheel · 4-16
Contrast · 4-14

D

H

Halftone · 4-10
Highlight · 4-15
hue · 4-16

I

Image Control · 4-13
Image Type · 4-7

LineArt, Halftone, Gray, 256

Colors, True Colors · 4-9

Intensity · 4-16
Invert · 4-19

L

LineArt · 4-9
lock switch · 2-2

M

moire patterns · 4-23

Descreen · 4-23

O

G

Gamma · 4-14
Gray · 4-11

AV620CS Plus a

OCR · 4-7, 4-27

P

Preview · 4-4

Q

Scan · 4-4
SCSI chain · 2-3
SCSI ID · 2-3
SCSI termination · 2-3
Select Source · 4-3

Shadow · 4-15
Sharpen · 4-22

Speed Mode · 4-20

Quality Mode · 4-20

R

resolution · 4-6, 4-7

S

Saturation · 4-16
Scaling · 4-25

T

transparency kit · 4-5
True Color · 4-12

U

Unit · 4-25

b AV620CS Plus