Data Translation DT3120 User manual

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DT3120
UM-18109-E
User’s Manual

Fifth Edition
September, 2002
Data Translation, Inc.
100 Locke Drive
Marlboro, MA 01752-1192
[phone]
www.datatranslation.com
Fax: [phone]
E-mail: [email protected]
Copyright © 2001, 2002 by Data Translation,
Inc.
All rights reserved.
Information furnished by Data Translation, Inc.
is believed to be accurate and reliable; however,
no responsibility is assumed by Data Translation,
Inc. for its use; nor for any infringements of
patents or other rights of third parties which
may result from its use. No license is granted by
implication or otherwise under any patent rights
of Data Translation, Inc.
Use, duplication, or disclosure by the United
States Government is subject to restrictions as set
forth in subparagraph (c)(1)(ii) of the Rights in
Technical Data and Computer software clause at
48 C.F.R, 252.227-7013, or in subparagraph (c)(2)
of the Commercial computer Software -
Registered Rights clause at 48 C.F.R., 52-227-19 as
applicable. Data Translation, Inc., 100 Locke
Drive, Marlboro, MA 01752.
Data Translationand GLOBAL LABare
registered trademarks, and Imaging OMNI
CD, DT-Open Layers, Frame Grabber SDK,
and DT Vision Foundryare trademarks of Data
Translation, Inc.
All other brand and product names are
trademarks or registered trademarks of their
respective companies.

Radio and Television Interference
This equipment has been tested and found to comply with CISPR
EN55022 Class A and EN50082-1 (CE) requirements and also with the
limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. 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 communications. Operation of this equipment in
a residential area is likely to cause harmful interference, in which case
the user will be required to correct the interference at his own
expense.
Changes or modifications to this equipment not expressly approved
by Data Translation could void your authority to operate the
equipment under Part 15 of the FCC Rules.
Note: This product was FCC-Certified under test conditions that
included use of shielded cables and connectors between system
components. It is important that you use shielded cables and
connectors to reduce the possibility of causing interference to radio,
television, and other electronic devices.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class A limits for radio
noise emissions from digital apparatus set out in the Radio
Interference Regulations of the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant les limites applicables aux appareils numériques de la class
A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le Ministère des Communications du Canada.

v
Table of Contents
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Intended Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
What You Should Learn from this Manual. . . . . . . . . . . . . . . . . . ix
Conventions Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . x
Related Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Where to Get Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Chapter 1: Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Supported Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2: Principles of Operation . . . . . . . . . . . . . . . . . . . . 5
Video Input Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Video Signal Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Videos Input Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Color Intensity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pixel Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Triggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Sync Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Video Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Active Video Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Horizontal Video Signal . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Vertical Video Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Frame (Region of Interest) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Frame Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Types of Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Scaling Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Frame Storage Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Contents
vi
Passthru Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Passthru Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Bitmap Passthru Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Continuous-Acquire Passthru Mode . . . . . . . . . . . . . . 23
Source Origin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Passthru Scaling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Overlays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Acquisition Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Chapter 3: Supported Device Driver Capabilities. . . . . . . . 29
DT3120 Device Driver Capabilities . . . . . . . . . . . . . . . . . . . . . . . . 30
Initialized Control Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Chapter 4: Programming Flowcharts. . . . . . . . . . . . . . . . . . 55
Single-Frame Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Multiple-Frame Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Passthru without Overlays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Passthru with Overlays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Chapter 5: Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 79
General Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Service and Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Telephone Technical Support. . . . . . . . . . . . . . . . . . . . . . . . . . 84
E-Mail and Fax Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
World-Wide Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
If Your Board Needs Factory Service. . . . . . . . . . . . . . . . . . . . . . . 88
Appendix A: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 89

Contents
vii
Appendix B: Modifying the Device Driver . . . . . . . . . . . . . 93
Windows 98 and Windows Me Procedures . . . . . . . . . . . . . . . . . 94
Adding a Board to the Device Driver Configuration. . . . . . 94
Modifying a Board in the Device Driver Configuration . . . 95
Uninstalling the Device Driver . . . . . . . . . . . . . . . . . . . . . . . . 96
Windows 2000 Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Adding a Board to the Device Driver Configuration. . . . . . 97
Modifying a Board in the Device Driver Configuration . . . 98
Uninstalling the Device Driver . . . . . . . . . . . . . . . . . . . . . . . . 98
Windows XP Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Adding a Board to the Device Driver Configuration. . . . . 100
Modifying a Board in the Device Driver Configuration . . 101
Uninstalling the Device Driver . . . . . . . . . . . . . . . . . . . . . . . 101
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Contents
viii

ix
About this Manual
This manual describes the features of the DT3120 frame grabber
board, and how to use the DT3120 Device Driver with the Frame
Grabber SDKto write an application program.
Intended Audience
This document is intended for engineers, scientists, technicians, or
others responsible for programming and/or using a DT3120 board to
perform machine vision and/or image analysis operations. It is
assumed that you have some familiarity with imaging principles and
that you are familiar with the operating characteristics of your video
source.
If you are writing application programs using the device driver and
the Frame Grabber SDK, it is also assumed that you are familiar with
the MicrosoftWindows98, Windows Me (Millennium Edition),
Windows 2000, or Windows XP operating system and with the
Microsoft C compiler.
What You Should Learn from this Manual
This manual provides detailed information about the features of the
DT3120 board and the DT3120 Device Driver to allow you to access
the board’s capabilities using software. It is organized as follows:
•Chapter 1, “Overview,” describes the major features of the
boards, as well as the supported software and accessories for the
boards.
•Chapter 2, “Principles of Operation,” describes all of the features
of the boards and how to use them in your application.

About this Manual
x
•Chapter 3, “Supported Device Driver Capabilities,” describes the
capabilities supported by the DT3120 Device Driver and the
initialized control values.
•Chapter 4, “Programming Flowcharts,” describes the processes
you must follow to program the DT3120 board using the
DT-Open LayersFrame Grabber SDK.
•Chapter 5, “Troubleshooting,” provides information that you can
use to resolve problems with the boards and the device driver,
should they occur.
•Appendix A, “Specifications,” lists the specifications of the
boards.
•Appendix B, “Modifying the Device Driver,” describes how to
add, modify, and remove boards from the device driver, and how
to uninstall the device driver, if necessary.
• An index complete this manual.
Conventions Used in this Manual
The following conventions are used in this manual:
• Notes provide useful information that requires special emphasis,
cautions provide information to help you avoid losing data or
damaging your equipment, and warnings provide information to
help you avoid catastrophic damage to yourself or your
equipment.
• Items that you select or type are shown in bold.
•Courier font is used to represent source code.

About this Manual
xi
Related Information
Refer to the following documents for more information on using the
DT3120 board:
•DT3120 Getting Started Manual (UM-18113), included on the
Imaging OMNI CD or GLI/2 StreamlineCD provided with
the DT3120 board, describes how to install the DT3120 software,
install a DT3120 board, connect signals to the board, install and
configure the DT3120 Device Driver, verify the board’s operation
with DT-Acquire, and view the DT3120 manuals online.
•Frame Grabber SDK User’s Manual (UM-13442) and online help,
included on the Imaging OMNI CD provided with the DT3120
board, describe the Dynamic Linkable Library (DLL) that you can
use to write image acquisition application software.
•DT-Active Open Layers User’s Manual (UM-17325), available from
Data Translation, describes DT-Active Open Layers, an ActiveX
control, which allows you to use Data Translation PCI frame
grabber boards within graphical programming environments
such as Microsoft Visual Basic® and Visual C++®.
•GLOBAL LAB Image/2 User’s Manual (UM-17790) and GLOBAL
LAB Image/2 API Manual (UM-17792),available from Data
Translation, describe how to use GLOBAL LAB® Image/2
(GLI/2) and GLI/2 Streamline to create scientific applications
using object-oriented image processing tools.
•DT Vision Foundry User’s Manual (UM-17755) and DT Vision
Foundry API Manual (UM-17757), available from Data
Translation, describe how to use DT Vision Foundryto create
machine vision applications using object-oriented image
processing tools.

About this Manual
xii
Additionally, it may be helpful to read other material to gain a better
understanding of image processing concepts, algorithms, and their
applications. Data Translation's Technical Support Department
recommends the following resources for understanding image
processing concepts, processing, and coding:
Baxes, Gregory A. Digital Image Processing, Principles &
Applications. New York: John Wiley & Sons, 1994.
Introduction to image processing and hardware/software
basics.
Benson, K. Blair, and Donald G. Fink. HDTV Advanced TV for the
1990's. New York: McGraw-Hill, 1990. Details high-definition
television concepts.
Castleman, K. R. Digital Image Processing. Englewood Cliffs, NJ:
Prentice-Hall, 1987. Explains major image processing
concepts and mathematical concepts involved in digital
image manipulation.
Cunningham, John E. Cable TV. 2nd ed. Indianapolis: Howard W.
Sams & Company, Inc., 1987. Provides the basics of cable
television.
Foley, J. D., and A. Van Dam. Fundamentals of Interactive Computer
Graphics. Addison-Wesley: Reading, MA, 1984. Provides
information on geometric functions.
Friedhoff, Richard M., and William Benzon. The Second Computer
Revolution, Visualization. New York: Harry N. Abrams, Inc.,
1989. Covers the history of image processing technology.
Gonzalez, Rafael C., and Paul Wintz. Digital Image Processing.
Menlo Park, CA: Addison-Wesley, 1987. Explains major
image processing concepts and mathematical concepts
involved in digital image manipulation, including FFT
processing, filtering operations, geometric functions,
histograms, and linear equalization.

About this Manual
xiii
Held, Gilbert. Data Compression Techniques and Applications:
Hardware and Software Considerations. 3rd ed. Somerset, NJ:
John Wiley & Sons, Inc., 1991. Covers various techniques
currently used for data compression; includes programming
examples.
Holzmann, Gerard J. Beyond Photography - The Digital Darkroom.
Englewood Cliffs, NJ: Prentice-Hall, 1988. Introduces and
explains image editing; includes programming examples.
Ingram, Dave. Video Electronics Technology. Blue Ridge Summit,
PA: Tab Books, Inc., 1984. Explains the basic electronics used
in video devices.
Kiver, M. S. Color Television Fundamentals. New York:
McGraw-Hill, 1977. Covers television and video basics.
Lindley, Craig. Practical Image Processing in C. Somerset, NJ: John
Wiley & Sons, Inc., 1991. Explains basic image processing
techniques using C, provides many programming examples,
covers TIFF and PICT file formats, and describes how to map
images into VGA memory space.
Luther, Arch C. Digital Video in the PC Environment. New York:
McGraw-Hill, 1991. Explains Digital Video Interactive (DVI)
technology.
National Semiconductor Corporation. Linear Applications
Handbook. Santa Clara, CA: National Semiconductor
Corporation, 1986. Explains broadcasting standards and
major circuit components of frame grabber boards.
Pratt, William K. Digital Image Processing. Somerset, NJ: John
Wiley & Sons, Inc., 1991. Detailed text on image processing,
including morphological processing, feature extraction,
image segmentation, and shape analysis.

About this Manual
xiv
Reid, Christopher E. and Thomas B. Passin. Signal Processing in C.
Somerset, NJ: John Wiley & Sons, Inc.
Rimmer, Steve. Bit-Mapped Graphics. Blue Ridge Summit, PA: Tab
Books, Inc., 1990. Details digital image file formats and image
manipulation after digitizing.
Rimmer, Steve. Graphical User Interface Programming. Blue Ridge
Summit, PA: Tab Books, Inc., 1992. Covers various techniques
currently used for GUI programming; gives insight into how
Microsoft Windows was written/implemented along with
the design aspects related to windows programming;
includes programming examples.
Rosenfeld, Azriel, and Avinash C. Kak. Digital Picture Processing.
New York: Academic Press, Inc., 1990. Describes image
processing techniques and concepts.
Russ, John C. Computer-Assisted Microscopy, The Measurement
and Analysis of Images. New York: Plenum Press.
Serra, J. Image Analysis and Mathematical Morphology. London:
Academic Press, Ltd., 1982. Provides information on
morphological processing.
Smith, C. Cecil. Mastering Television Technology. Richardson, TX:
Newman Smith Publishing Company, Inc., 1988. Describes
current video technology and concepts.
Tektronix, Inc. Television Measurements - NTSC Systems.
Beaverton, OR: Tektronix, Inc., 1989. Covers test equipment
and broadcasting standards.
Ulichney, Robert. Digital Halftoning. Cambridge, MA: The MIT
Press, 1987. Describes image manipulation, creation, and
analysis in the digital environment.

About this Manual
xv
Watkinson, John. The Art of Digital Video. Stoneham, MA: Focal
Press, 1990. Provides an in-depth description of digital video
fundamentals.
Where to Get Help
Should you run into problems installing or using a DT3120 board, the
Data Translation Technical Support Department is available to
provide technical assistance. Refer to Chapter 5 for more information.
If you are outside the United States or Canada,call your local
distributor, whose number is listed in your Data Translation product
handbook.

About this Manual
xvi

1
1
Overview
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Supported Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 1
2
Features
The DT3120 is a low-cost, color frame grabber board for the PCI bus.
This board is suitable for both color image analysis and machine
vision applications.
Each DT3120 board digitizes the image, then either stores the
digitized data to the host computer’s system memory or transfers the
digitized data to the computer’s display controller to display images
in real-time. The board transfers image data to the host computer
using PCI burst transfers.
Key features of the DT3120 board are summarized as follows:
• Operates as PCI bus masters on half-size board.
• Supports the scatter/gather memory capability using the PCI
interface chip.
• Supports one monochrome or composite video input, which uses
the NTSC/RS-170 or PAL/CCIR video format, or one S-video
signal, which uses the Y/C video format.
• Accepts a software or external trigger.
• Acquires single or multiple fields and/or frames synchronously
or asynchronously.
• Stores images in either 32-bit RGB, 16-bit RGB, 15-bit RGB, 16-bit
YUYV422, or 8-bit monochrome format.
• Supports programmable region-of-interest (ROI).
• Provides real-time, interpolated scaling to any size.
• Provides programmable control of the color settings of the board,
including brightness, contrast, saturation, and hue.
• Supports overlays.

Overview
3
1
1
1
1
1
1
1
1
1
Supported Software
The following software is available for use with a DT3120 board:
•DT3120 Device Driver −This software, which is
operating-system specific, is provided on the Imaging OMNI CD,
which is shipped with the board. You must install this device
driver to use a DT3120 board with any of the supported software
packages or utilities. Refer to the DT3120 Getting Started Manual
(UM-18113) for information on installing the device driver.
•DT-Acquire −This software is provided on the Imaging OMNI
CD, which is shipped with the board. This utility allows you to
verify the operation of your board during startup. Refer to the
DT3120 Getting Started Manual for information on installing and
using this utility.
•GLI/2 Streamline −This package is shipped with the board if
you purchased the SCI-PAKpackage. This package allows you
to create scientific applications using object-oriented image
processing tools.
•32-Bit Frame Grabber SDK −Use this software package,
provided on the Imaging OMNI CD, if you want to develop your
own application software for the DT3120 board using the
Microsoft C compiler in Windows 98, Windows Me, Windows
2000, or Windows XP.
•DT-Active Open Layers −Order this optional software package
if you want to use the DT-Active Open Layers ActiveX control to
access the capabilities of the DT3120 board using Microsoft
Visual Basic or Visual C++.
•GLOBAL LAB Image/2 −Order this optional software package if
you want to develop scientific applications using object-oriented
image processing tools.
•DT Vision Foundry −Order this optional software package if
you want to develop machine vision applications using
object-oriented image processing tools.