Table of Contents
About This Guide
Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Who Should Read This Manual? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Special Symbols Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
For Your Safety
Laser Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Laser Safety Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
For More Laser Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Electrical Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Power and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Liquids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Unsafe Operating Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Medical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Radioactive (Nuclear) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Explosive Atmosphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Section 1: Introduction
What Is Cobra?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 6
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 7
Computer Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 8
Cobra Laser Profile Scanner Users Guide
Section 2: Installation and Setup
System Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
Unpacking and Setting Up Cobra 2D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
Tools and Materials Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
Unpacking Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
Mounting the Video Camera and LCD Screen Assemblies . . . . . . . . . . . . . . . . . . . . . 2 - 6
Tools and Materials Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 6
Mounting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 6
Cable Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 10
Unpacking and Setting Up Cobra 3D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
Tools and Materials Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
Support Surface Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
Unpacking Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 15
Installing Scan-X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 19
Installing on Windows 98 Second Edition Systems . . . . . . . . . . . . . . . . . . . . . 2 - 19
Installing on Windows 2000 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 23
Setting the Parallel Port Address and Mode. . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 28
Enabling Scan-X 3D Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 30
Registering Scan-X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 31
Section 3: Getting Started
Powering Up Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
Screen Layout (2D Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
Screen Layout (3D Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
Accessing the Scan-X On-Line Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
How to View Help Topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 4
Help Topic Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5
Raising and Lowering the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 6
How to Perform a Scan: Scanning a Penny . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 7
Optimizing Laser Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 12
Maximum Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 12
Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 13
Cobra Laser Profile Scanner Users Guide
Section 4: Swapping Sensors
DRS Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
Swapping Sensors on Systems Equipped with the Video Camera Option . . . . . . . . . . . . . . 4 - 2
Removing the Video Camera Assembly and Sensor . . . . . . . . . . . . . . . . . . . . . 4 - 2
Mounting the Video Camera Assembly and Sensor . . . . . . . . . . . . . . . . . . 4 - 5
Swapping Sensors on Systems Not Equipped with the Video Camera Option . . . . . . . . . . . 4 - 8
Removing a Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 8
Mounting a Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 9
Section 5: Adjusting the Sensor Mounting Pad
Rotational Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
Vertical Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 4
Section 6: Troubleshooting
Appendix A: Setting the Display Properties
Reducing the Number of Displayed Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A - 2
Reducing the Hardware Acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A - 3
Appendix B: Focusing and Aligning the Camera
Focusing the Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 1
Aligning the Camera to the DRS Laser Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 3
Cobra Laser Profile Scanner Users Guide
This page was left blank intentionally.
Cobra Laser Profile Scanner Users Guide
Organization
About
This Guide
About This Guide
Welcome!
Quality Vision International (QVI) has produced this Users Guide as part of its
ongoing effort to provide users with useful, comprehensive documentation. This
manual has been developed using documentation standards and a design that
enhances readability and makes it easier to find information.
We believe this manual will assist you in the installation and operation of your
Cobra Laser Profile Scanner. If you should have and questions that are beyond
the scope of this manual, please contact your local authorized sales
representative.
The Cobra Laser Profile Scanner Users Guide contains the following sections:
About This Guide (this section), describes the organization of this manual,
outlines the documentation conventions used in this manual, and provides
information regarding customer service.
For Your Safety, provides an overview of necessary safety precautions to be
observed whenever using your Cobra.
Section 1, Introduction, provides an overview of Cobra and the Scan-X
software, describes Cobra features and functions, lists Cobra specifications, and
describes minimum computer requirements.
Section 2, Installation and Setup, provides installation instructions for your
Cobra system and the Scan-X software, includes information about how to set
up your computer, describes how to enable Scan-X 3D mode, and contains
information about registering the Scan-X software.
Section 3, Getting Started, provides information on how to power up your
Cobra system, raise and lower the sensor, perform a scan, optimize laser
settings, and use the Scan-X on-line Help.
About This Guide i
Section 4, Swapping Sensors, provides instructions on how to remove and
replace sensors.
Section 5, Adjusting the Mounting Pad, describes how to rotationally and
vertically adjust the sensor mounting pad.
Section 6, Troubleshooting, is brief guide to troubleshooting system problems.
Appendix A, Setting Display Properties, describes how to adjust the display
properties on your system for optimum performance with Scan-X.
Appendix B, Focusing and Aligning the Camera, describes how to focus and
align the video camera (if equipped) on your Cobra.
Who Should Read This Manual?
Read and familiarize yourself with this manual if you will be involved in the
installation and/or operation of your Cobra.
Related Publications
In addition to this manual, QVI may provide the following documentation
related to Cobra:
•
Cobra Certification Reference Guide (P/N 790281). This manual contains
instructions for verifying the measurement accuracy of your Cobra system.
•
Scan-X Reference Guide (P/N 790338). This manual provides an in-depth
description of the Scan-X software. It describes the user interface and
provides instructions on how to use the numerous functions available in
Scan-X.
•
AutoScan Users Guide (P/N 790336). This manual is designed for the
advanced user and describes how to use AutoScan and/or Scan-X to
automate your Cobra system. It contains a pair of tutorials and includes the
AutoScan Public Class References and Scan-X Public Interface References.
ii About This Guide
Documentation Conventions
About
This Guide
To help you locate, interpret, enter or select information easily, this manual uses
consistent visual cues and standard text formats. For example, capital letters (or
upper-case letters) may be used to call attention to certain words and to help
eliminate confusion and ambiguity. These documentation conventions are
explained in the table below.
Type Style or
Symbol
Bold or italic
Bold, sans-serif
typeface
/
Initial caps
All caps
Used for
Emphasized words
•
Commands to be typed
•
• Keys to be pressed
• Menu items to be selected
• Selections from a main
menu and submenus
• Proper nouns
• Product names
• Sections, figures
•
Acronyms
•
File names
Examples and
Explanations
Do not repeat this step
•
Select the highest magnification
•
level
Type Exit
•
• Press the Enter key
• Select Profile View in the View
menu
• Select File / Exit
• Use the Measure function
• Scan-X; Cobra
• See Section 3
•
ASCII; QVI
•
Edit INPUT.INI
About This Guide iii
Special Symbols Used in This Manual
Throughout this manual you will find special information set apart from the
body text as Warnings, Cautions, Notes, and On-line Help references. The
meaning of each is explained below.
Warns you of the possibility of personal injury due to electrical shock when
performing a task related to the subject matter of this manual. Follow all
instructions precisely to ensure your safety.
Warns you of the possibility of other personal injury when performing a
task related to the subject matter of this manual. Follow all instructions
precisely to ensure your safety.
Alerts you to the potential for damage to the components of Cobra. Special
instructions may be included for minimizing this risk.
Note: Provides additional information related to the topic being discussed.
On-line Help: Provides references to Scan-X on-line Help topics that include
additional information about the topic being discussed.
Customer Service
QVI values all its customers. Please contact your local authorized sales
representative for:
•
Customer service
•
Questions and comments
•
Information about additional training or support for your application
Please have your Cobra serial number and the Scan-X software version number
ready when you contact us.
Note: For more information regarding Scan-X, see the Scan-X Reference Guide
(P/N 790338) and/or the Scan-X On-line Help.
iv About This Guide
Laser Safety
For Your Safety
For Your Safety
For your personal safety, please review the following safety precautions. They
are provided for your protection, and to prevent damage to your Cobra. This
safety information applies to anyone who comes in contact with Cobra.
Read the laser safety information carefully and follow all safety
precautions. Not following safety precautions could result in hazardous
radiation exposure to your eyes.
Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
Cobra should never be tilted or turned over while the laser LED is lit.
Cobra Digital Range Sensors (DRS) use a laser diode as the laser source. DRS
laser energy is not dangerous to exposed skin. However, if viewed directly or
from a reflection of a specular (mirror-like) surface for a period of time longer
than the normal human aversion to bright light, the emitted light from those
sources may be harmful to the human eye.
Cobra DRS laser sensors conform to laser safety regulations set forth by the
Code of Federal Regulations 21 (CFR 21) and submitted to the Center for
Devices and Radiological Health (CDRH). DRS sensors also conform to the
IEC-825 (1993) laser safety regulations specified by the International
Electrotechnical Commission (IEC).
Cobra DRS laser sensors meet Class II requirements of the CFR 21 standard and
Class 2 requirements of the IEC-825 European standard.
For Your Safety v
Laser Safety Markings
The following laser safety labels are attached to the laser sensor, and indicate
Cobra’s compliance with CDRH and IEC-825 regulations.
Safety Label Meaning
International
Laser Symbol
IEC-825 Laser
Safety Classification
CDRH Laser
Safety Classification
Laser Aperture
Warning
For More Laser Safety Information
For more information on laser safety, contact the Laser Institute of America
(lia@laserinstitute.org) and ask for ANSI specification number Z136.1-1993.
The Laser Institute of America also offers other booklets and information on
laser safety.
vi For Your Safety
Electrical Safety
For Your Safety
Power and Grounding
The Cobra DRS control module and sensor operate at low voltages and power
levels. However, observe the following precautions regarding electrical safety.
Your Cobra is grounded through the power cord. To avoid electric shock, plug
the power cord into a properly wired receptacle with an earth ground
connection.
A protective ground connection is essential for safe operation of your
Cobra.
Power Cord
Follow these general safety rules regarding your Cobra’s power cord:
• Use only the power cord and connector supplied with your Cobra. If you
must use an extension cord, make sure it is grounded and is of the proper
type and wire gage.
• Do not operate your Cobra if the power cord is damaged.
• Position the power cord so that it will not be tripped over, pulled, or come in
contact with a hot surface.
Servicing
Cobra servicing should only be performed by qualified personnel.
Do not remove Cobra’s bottom panel to expose internal components. This is
a high voltage area that should only be accessed by an authorized service
representative. Contact your authorized service or sales representative for
assistance.
Liquids
Keep water and other liquids away from your Cobra, to reduce the risk of
spillage and electrical shock.
For Your Safety vii
Accessories
Do not use any accessory attachments other than those provided or
approved by QVI. Improper accessories can cause fire, electric shock,
and/or personal injury.
Unsafe Operating Environments
Do not operate your Cobra in the following environments, where specific
regulatory compliances are required.
Medical
Do not operate your Cobra in hospitals, clinics, or laboratories, where
sensitive patient monitoring equipment may be affected.
Radioactive (Nuclear)
Your Cobra’s electronics are not radiation-hardened. Do not operate your
machine in a radioactive environment.
Explosive Atmosphere
Do not operate your Cobra in environments where flammable gases and
vapors or explosive dust are present. These could be ignited by the heat or
sparks which may be generated by your Cobra system.
viii For Your Safety
Section 1
Introduction
What Is Cobra?
Introduction
This section includes an overview of Cobra, shows the components for each
configuration and describes their respective functions, lists specifications, and
outlines the minimum computer requirements for customers supplying their own
computer.
The Cobra 2D and Cobra 3D Laser Profile Scanners are economical,
non-contact measurement systems ideal for quickly scanning any part or surface
to produce high-resolution, two-dimensional or three-dimensional profiles.
Cobra combines laser technology, a computer-controlled moving sensor, and the
Scan-X data analysis software to produce an extremely versatile profile scanner.
Since Cobra scans by moving the sensor itself over the part; no special fixturing
is required.
Non-contact laser scanning is ideal for the non-destructive measurement of
fragile or pliable parts. Cobra is particularly useful for measuring precision cast,
machined, and stamped metal parts, toolings and dies, molded plastic
components, printed inks and paper surfaces, milled surfaces, membranes, and
coatings. It is also excellent for measuring flex circuits, epoxy dots, thick film,
and solder paste.
Introduction 1-1
Cobra 2D can be used on a benchtop, mounted in your own fixture, installed
in-line to take process measurements, or placed directly over a larger
component. Parts are positioned below the sensor and are scanned by moving
the sensor along the Y axis. This creates a profile of the part surface.
Cobra 3D extends Cobra 2D functionality through the addition of computer
driven X axis staging. Parts are positioned on the stage and are scanned by
moving the sensor along the Y axis and the part along the X axis. This creates
numerous parallel linear profiles and generates a three-dimensional image.
Cobra is available with a video camera option for real-time imaging of the part
under test, which simplifies setup and specific feature selection for improved
throughput. The video camera option is only available on Cobras equipped with
DRS-300 or DRS-500 laser sensors.
Computer to run Scan-X and operate Cobra is required. A Pentium class
computer is available if you choose not to supply your own.
Components
Figure 1-1 shows the various components of Cobra 2D. See the table that starts
on page 1-4 for information about the component functions.
Figure 1-1. Cobra 2D Components
1-2 Introduction
Figure 1-2 shows the various components of Cobra 3D. See the table that starts
Introduction
on page 1-4 for information about the component functions.
Introduction 1-3
Figure 1-2. Cobra 3D Components
If your Cobra system is equipped with the video camera option, it has the
additional components shown in Figure 1-3. See the table below for information
about component functions.
Figure 1-3. Cobra Equipped with Video Camera Option
This table describes the functions of the various Cobra components.
Component Function
•
Focus Knob Raises and lowers the sensor to focus the laser over the part
surface
•
Locking Knob Locks the Z axis slide in position
•
Sensor Mounting
Pad
•
Thumb Wheel Raises and lowers the back of the main unit to level Cobra by
•
Parallel Port Connects Cobra via parallel cable to the parallel port on the
•
Power Switch Controls power to the main unit (| = on, O = off)
1-4 Introduction
Supports the sensor on the end of the stage arm
adjusting the sensor’s angle of travel (not used on 3D systems)
associated computer, providing communication between the
computer and Cobra
Component Function
Introduction
Power Cord
•
Receptacle
System LED Indicates Cobra system power is on – illuminates when Cobra
•
Motor Cable Provides power to the X axis motor (3D systems only)
•
X Axis Stage Provides third axis of measurement (3D systems only)
•
Granite Base Provides a study work surface for optimum performance (3D
•
Sensor Takes laser-based height measurements
•
Laser Sensor Cable Provides power to the sensor, and returns sensor readings to
•
• Power LED Indicates power is available to the sensor – illuminates when
• Laser LED Illuminates to indicate laser is taking height measurements
• LCD Screen Displays a live video image of the part on a 6.8" diagonal
• Camera Assembly Includes a self-contained B&W CCD video camera and
Connects Cobra via power cord to main power source
is turned on
systems only)
Cobra
Scan-X software is active
TFT-LCD display (only applies to systems equipped with
video camera option)
on-axis optical assembly for square-on viewing, and on-axis
adjustable LED surface illumination for perfect image (only
applies to systems equipped with video camera option)
Introduction 1-5
Never connect or disconnect the laser sensor cable from the top of the sensor
while power is applied to Cobra. Doing so can seriously damage the sensor.
Specifications
This table lists the specifications for your Cobra Laser Profile Scanner.
Dimensions
Cobra 2D
Depth 42.5 cm (16.8")
Width 22.0 cm (8.6")
Height 31.5 cm (12.4")
Weight 10.5 kg (23 lbs)
Cobra 3D
Depth 61.0 cm (24.0")
Width 51.0 cm (20.0")
Height 39.0 cm (15.4")
Weight 80 kg (175 lbs)
Travel
Maximum Y axis scan length 50 mm (2.0")
Maximum X axis scan length
(only applies to Cobra 3D)
Z axis adjustment range 50 mm (2.0")
100 mm (4.0")
Power and Environment
Power requirements 100-240 VAC, 50/60 Hz, 2.0 Amps
•
Rated environment
Operating environment 15-30° C
1-6 Introduction
18-23° C ± 2° C/hr
•
30-80% humidity
(non-condensing)
•
vibration <0.002g below 15 Hz
Dimensions
Introduction
N = Distance from the laser sensor to the
target in the middle of the capture range
Figure 1-4 shows the various dimensions of the Cobra main unit.
Introduction 1-7
Figure 1-4. Cobra Dimensions
Computer Requirements
Scan-X software is compatible with Windows™ 98 Second Edition and
Windows 2000. If your purchased the Factory-supplied Computer option, do not
make any configuration changes to the computer or load any software prior to
consulting your authorized sales representative first; the system configuration
has been optimized for use with Cobra.
If you are supplying your own computer it will need to be configured (described
later), and must meet the following minimum requirements:
Pentium III, 500 Mhz processor
•
CD-ROM drive
•
VGA Card capable of 1024 x 768, 32 BIT color
•
Monitor capable of handling 1024 x 768 resolution
•
Windows 98 Second Edition or Windows 2000 operating system
•
• 256 MB RAM (Windows 98); 512 MB RAM (Windows 2000)
• Bi-directional, 1284 compliant parallel port
• Software: DirectX 8.1 or higher; Internet Explorer 6.0 or higher
1-8 Introduction
Section 2
Installation
and Setup
This section describes how to install and set up your Cobra, install the Scan-X
software, set up the parallel port address, enable the Scan-X 3D mode, and
register Scan-X.
System Certification
All Cobra systems are inspected and certified at the factory prior to shipment
using NIST-traceable step standards. The systems are certified only for the
current mounting position of the sensor mounting pad (Z slide).
In special circumstances, it may be necessary to alter the position of the Z slide
to fit a specific application if the slide cannot be moved into the desired position
using the Focus knob. For example, a tall part may require more working
clearance thereby necessitating a higher mounting position of the Z slide.
Installation and Setup
Note: If the mounting position of the sensor mounting pad (Z slide) is altered in
any way from the factory installed position, your Cobra should be re-certified to
ensure system accuracy. See Section 5, Adjusting the Sensor Mounting Pad, for
more information on raising or lowering the position of the mounting pad.
Consult your local authorized sales representative for more information on field
certification of your Cobra system.
Installation and Setup 2-1
Unpacking and Setting Up Cobra 2D
This subsection only applies to Cobra 2D. See the topic, Unpacking and Setting
Up Cobra 3D, for information on how to unpack and set up Cobra 3D.
When you receive your Cobra 2D, the shipment will consist of a box that
contains the main unit, individually wrapped laser sensor(s), and video camera
package (if applicable). The laser sensor(s) is not attached to the main unit.
Note: The shipment will include additional boxes if you also purchased the
Factory-supplied Computer option.
The procedure for unpacking Cobra 2D and mounting the laser sensor onto the
unit is outlined below.
Tools and Materials Required
To unpack and set up your Cobra 2D system, you will need the following:
• 3 mm hex key (Allen) wrench
• Utility knife
• Machinist square or other quality square tool
• Parallel cable
• Workbench (optional)
Unpacking Procedure
To unpack and set up your Cobra 2D, follow the steps below.
Note: This procedure assumes that if you are supplying your own computer,
the computer is already set up and ready to be connected to Cobra.
1. Remove the laser sensor box and the Cobra Laser Profile Scanner from the
main shipping carton.
2. Place Cobra on a sturdy work surface.
Note: For optimum performance, we recommend placing Cobra on a granite
surface plate.
2-2 Installation and Setup
3. Level Cobra to the work surface.
Installation
and Setup
Use the thumb wheel (located on the back panel) to raise or lower the back
of the unit until a machinist square (or other quality square tool) rests
squarely on the sensor mounting pad, as shown in Figure 2-1 below.
Note: You may need to re-level Cobra once the unit is operational in order to
compensate for the work surface or part.
Figure 2-1. Leveling Cobra 2D
Installation and Setup 2-3
4. Unpack the DRS laser sensor you want to mount.
If you purchased the video camera option, perform the Mounting the
-
Video Camera and LCD Screen Assemblies procedure that starts on
page 2-6.
If you did not purchase the video camera option, continue with Step 5
-
of this procedure.
5. Mount the laser sensor onto the sensor mounting pad. Use the two
positioning pins to align the sensor correctly over the mounting holes, see
Figure 2-2 below.
Note: Mount the sensor so that the laser sensor connector is on the left side of
the sensor as shown in Figure 2-2.
6. Insert the three mounting screws into the mounting holes, and tighten firmly
with a 3 mm hex key (Allen) wrench.
Figure 2-2. Installing the Sensor
Never connect or disconnect the laser sensor cable from the top of the sensor
while power is applied to Cobra. Doing so can seriously damage the sensor.
7. Connect the laser sensor cable to the top of the sensor as shown in
Figure 2-3 on the following page.
2-4 Installation and Setup
8. If you purchased the Factory-supplied Computer option, unpack and set up
Installation
and Setup
the computer and components at this time.
9. Connect a parallel cable from the PARALLEL PORT on the Cobra back
panel (see Figure 2-3) to the parallel port on the associated computer.
10. Plug the female end of the supplied Cobra power cord into the power cord
receptacle on the back panel of Cobra (see Figure 2-3) and connect the male
end into a properly configured outlet.
11. If you did not purchase the Factory-supplied Computer option, install the
Scan-X software onto the associated computer (described later in this
section). It is pre-installed on computers purchased from the factory.
This completes the procedure for unpacking and setting up Cobra 2D.
Figure 2-3. Connecting the Cables
Installation and Setup 2-5
Mounting the Video Camera and LCD Screen Assemblies
This subsection only applies to Cobra 2D systems equipped with the video
camera option. The procedure outlined below assumes that Steps 1 through 4 of
the Mounting and Setting Up Cobra 2D procedure have already been completed.
If they have not, they must be completed before starting this procedure.
Note: The video camera option can only be used with the DRS-300 and
DRS-500 lasers; it cannot be used with the DRS-2000 or DRS-8000 lasers.
Tools and Materials Required
To mount the video camera and LCD screen assemblies onto your Cobra you
will need the following:
2 mm hex key (Allen) wrench
•
• 3 mm hex key (Allen) wrench
• 5/32" hex key (Allen) wrench
• Small flat-head screwdriver
Mounting Procedure
To mount the video camera and LCD screen assemblies, follow the steps below.
1. Unpack the video camera
accessory package. The
package includes the camera
and LCD screen assemblies,
three partially-threaded
screws, and the
interconnecting cables.
2. Use a 2 mm hex key (Allen)
wrench to remove the four
screws securing the camera
cover to the camera
assembly (see Figure 2-4).
Figure 2-4. Removing the Camera Cover
2-6 Installation and Setup
3. Use a 3 mm hex key (Allen) wrench to remove the two screws shown in
Installation
and Setup
Figure 2-5, which partially frees the camera from its mounting plate. Set the
screws aside; you will need them later.
The camera is still attached to the mounting plate via the LED power wires (red
and black). These two wires are very delicate. Therefore, keep the camera as
close as possible to the mounting plate to avoid damaging either wire.
Figure 2-5. Freeing the Camera from the Mounting Plate
4. Place the DRS-300 or DRS-500 laser sensor on a flat surface, label side up.
Then set the camera mounting plate and attached camera on the front of the
sensor. Use the two locator pins on the back of the camera mounting plate
to correctly position it on the sensor.
Note: The video camera option can only be used with the DRS-300 and
DRS-500 lasers; it cannot be used with the DRS-2000 or DRS-8000 lasers.
Installation and Setup 2-7
5. Carefully swing the camera assembly to the right (or left) to reveal the
lower screw hole in the camera mounting plate. Then insert one of the three
partially-threaded screws into the hole and push it through the camera
mounting plate and sensor.
The camera is still attached to the mounting plate via the LED power wires (red
and black). These two wires are fairly delicate. Therefore, keep the camera close
to the mounting plate to avoid damaging either of these two wire
6. With your left (or right) hand, carefully pick up the camera mounting plate
and laser sensor, and then position and hold them on the sensor mounting
pad. Use the two positioning pins on the sensor mounting pad to align the
sensor and camera mounting plate over the mounting holes in the mounting
pad. When positioning the components, make sure that the camera
mounting plate remains aligned on the sensor.
7. With your free hand, use a 3 mm hex key (Allen) wrench to tighten the
partially-threaded screw you inserted into the lower mounting hole (Step 5)
and secure the camera mounting plate and sensor to the sensor mounting
pad.
Use Figure 2-6 for reference.
Figure 2-6. Attaching the Camera Mounting Plate and Sensor
2-8 Installation and Setup
8. Use a 3 mm hex key (Allen) wrench and the two screws removed in Step 3
Installation
and Setup
to resecure the camera to the camera mounting plate (see Figure 2-).
Figure 2-7. Securing the Camera to the Mounting Plate
9. Insert the other two partially-threaded screws into the upper two screw
holes in the camera mounting plate and sensor. Then use a 3 mm hex key
(Allen) wrench to tighten the screws firmly (see Figure 2-8).
Figure 2-8. Tightening the Upper Two Screws
Installation and Setup 2-9
10. Reinstall the camera
cover (using the screws
removed in Step 2).
11. Screw the LCD screen
assembly onto the Cobra
handle. Use a 5/32" hex
key (Allen) wrench to
tighten the mounting
screw (see Figure 2-9).
12. Follow the procedure
described next to make
the necessary cable
connections.
Cable Connections
After mounting the camera and LCD screen assemblies, follow the steps below
to make the necessary cable connections.
1. Locate the Camera and LED Power cable, and then connect J2008 to the
LED CTRL port on the Cobra back panel (see Figure 2-10). Use a small
flat-head screwdriver to tighten the two screw-locks (one on each side of the
connector) firmly.
Figure 2-9. Installing the LCD Screen Assembly
Figure 2-10. Connecting J2008 to the Back Panel
2-10 Installation and Setup
2. Connect J12 to Camera Power and J6 to LED Power on top of the
Installation
and Setup
camera (see Figure 2-11).
Figure 2-11. Connecting the Camera and LED Power Cable
3. Locate the LCD Screen Power cable. Connect the male end to the Cobra
back panel (see Figure 2-12, Part A) and connect the female end to the back
of the LCD screen (see Figure 2-12, Part B).
Figure 2-12. Connecting the LCD Screen Power Cable
Installation and Setup 2-11
4. Locate the Video Signal cable. Connect the female end to the top of the
camera (see Figure 2-13, Part A) and connect the male end to the back of
the LCD screen (see Figure 2-13, Part B).
Figure 2-13. Connecting the Video Signal Cable
Never connect or disconnect the laser sensor cable from the top of the sensor
while power is applied to Cobra. Doing so can seriously damage the sensor.
5. Connect the laser sensor cable to the top of the sensor as shown in
Figure 2-14 on the following page.
6. Use approximately eight cable tie-wraps to route and secure the cables to
Cobra as shown in Figure 2-14 on the following page.
2-12 Installation and Setup
7. If you purchased the Factory-supplied Computer option, unpack and set up
Installation
and Setup
the computer and components at this time.
8. Connect a parallel cable from the PARALLEL PORT on the Cobra back
panel (see Figure 2-14) to the parallel port on the associated computer.
9. Plug the female end of the supplied Cobra power cord into the power cord
receptacle on the back panel of Cobra (see Figure 2-14) and connect the
male end into a properly configured outlet.
Figure 2-14. Cobra with Video Camera Option, Fully Assembled
10. If you did not purchase the Factory-supplied Computer option, install the
Scan-X software onto the associated computer (described later in this
section). It is pre-installed on computers purchased from the factory.
Note: Before using your Cobra, you may need to focus and align the camera, as
described in Appendix B.
This completes the procedure for mounting the video camera and LCD screen
assemblies on your Cobra 2D.
Installation and Setup 2-13
Unpacking and Setting Up Cobra 3D
This subsection only applies to Cobra 3D. See the topic, Unpacking and Setting
Up Cobra 2D, for information on how to unpack and set up Cobra 2D.
When you receive your Cobra 3D, the shipment will consist of a bounded pallet
containing the Cobra 3D and any optional accessories. Your Cobra 3D will be
fully assembled, so all you need to do is unpack it, set it on a stable support
surface, and connect it to the associated computer.
Tools and Materials Required
To unpack and set up your Cobra 3D system, you will need the following:
Fork lift or pallet jack
•
• Power or manual hoist capable of lifting 80 kg (175 lbs)
• Pair of diagonal cutters
• Parallel cable
• Heavy-duty desk, workbench, table, or other surface (see minimum
requirements below)
Support Surface Requirements
Cobra 3D can be set up and used on any flat, stable surface. Place Cobra 3D on
a heavy-duty desk, workbench, table, or other surface to increase the accuracy
and repeatability of your measurements.
The support surface should:
•
Not vibrate or shift when you lean on it, or move the stage
•
Be able to safely support the full system and parts being scanned - a weight
capacity of 90 kg (200 lbs) is recommended
•
Have a work area of at least 110 x 110 cm (42 x 42")
2-14 Installation and Setup
Unpacking Procedure
Installation
and Setup
Note: Before unpacking Cobra 3D, be sure to review the Support Surface
Requirements topic for information about setting Cobra 3D on a stable working
surface.
To unpack and set up Cobra 3D, follow the steps below.
Note: This procedure assumes that if you are supplying your own computer, the
computer is already set up and ready to be connected to Cobra.
1. Use a fork lift or pallet jack to move the pallet containing Cobra 3D and
accessories to the installation site.
The metal bands that bind the shipment are under considerable tension and
may recoil unpredictably when cut.
2. Use a pair of diagonal cutters to cut and remove the two metal bands that
bind the shipment (see Figure 2-15).
Figure 2-15. Removing the Packing Material
3. Remove the shrink wrap and heavy plastic from around the system boxes.
Installation and Setup 2-15
4. Remove all the boxes, except the Cobra 3D shipping carton, from the pallet
and set them aside.
The Cobra 3D shipping carton is the largest box on the pallet and is
-
bound by plastic bands (see Figure 2-16).
Note: Figure 2-16 illustrates the typical packing arrangement for international
orders. For orders shipped within North America, the boxes are usually stacked
on top of each other and shipped on a smaller pallet.
The plastic bands that bind the Cobra 3D shipping carton are under
considerable tension and may recoil unpredictably when cut.
5. Use a pair of diagonal cutters to cut and remove the two plastic bands that
bind the Cobra shipping carton (see Figure 2-16).
6. Remove the top cap from the shipping carton (see Figure 2-16).
7. Remove the top insert and shipping foam from inside the shipping carton.
8. Lift the carton sleeve straight up to remove it from inside the bottom cap
(see Figure 2-16).
Figure 2-16. Unpacking Cobra 3D
2-16 Installation and Setup
9. Verify that both lifting straps are securely wrapped around the granite base.
Installation
and Setup
Then align the ends (loops) of the lifting straps and place them over the
hook of a power or manual hoist, as shown in Figure 2-17.
To avoid personal injury, lift the system with a power or manual hoist. If a
power or manual hoist is unavailable, use at least two people capable of
lifting at least 80 kg (175 lbs) to lift the system manually. Have each person
firmly grasp the granite base and lift straight up. When lifting, flex your
knees, not your back, to avoid back injury. Avoid pinching your fingers
between the granite and work bench when lowering Cobra.
Do not attempt to lift Cobra by the handle on the main unit. This could seriously
damage the unit.
10. Position two people next to Cobra — one on either side. Then slowly lift
Cobra with the hoist and place it on a sturdy bench capable of bearing its
weight.
11. Remove the lifting straps and plastic wrapped around the Cobra main unit.
Note: Do not discard the lifting straps. You will need them to relocate Cobra
3D after initial installation.
Figure 2-17. Lifting Cobra 3D
Installation and Setup 2-17
12. If you purchased the Factory-supplied Computer option, unpack and set up
the computer and components at this time.
13. Connect a parallel cable from the PARALLEL PORT on the Cobra back
panel (see Figure 2-18) to the parallel port on the associated computer.
14. Plug the female end of the supplied Cobra power cord into the power cord
receptacle on the Cobra back panel (see Figure 2-18) and connect the male
end into a properly configured outlet.
15. If necessary, plug the Motor cable into the AUX AXIS port on the Cobra
back panel (see Figure 2-18).
Figure 2-18. Cobra 3D Back Panel
16. If you did not purchase the Factory-supplied Computer option, install the
Scan-X software onto the associated computer (described later in this
section). It is pre-installed on computers purchased from the factory.
This completes the Cobra 3D installation procedure.
2-18 Installation and Setup
Installing Scan-X
Installation
and Setup
Installing on Windows 98 Second Edition Systems
This subsection describes how to install the Scan-X software on Windows 98
Second Edition and Windows 2000 systems. If you purchased the
Factory-supplied Computer option, you can skip this section because Scan-X
was installed on your computer at the factory.
Note: Before installing Scan-X, make sure your computer meets the minimum
requirements outlined in Section 1 of this manual.
The Scan-X installation procedure for Windows 98 Second Edition systems is
described next and is followed by the installation procedure for Windows 2000
systems.
To install the Scan-X software on a Windows 98 Second Edition system, follow
the steps below.
1. Turn on your computer and bring up the Windows desktop.
Note: We strongly recommend closing all Windows programs before installing
Scan-X. This ensures that the software installs properly.
2. Insert the Scan-X installation CD-ROM into your system CD drive.
3. Click on Start. Then highlight and select Run.
The Run dialog box is displayed.
4. Type d: (or the letter of your CD drive)\Disk1\Setup.exe in the command
line or click on the Browse button to locate the correct file. Then click on
the OK button.
Installation and Setup 2-19
The system loads the InstallShield Wizard and displays the Welcome to the
InstallShield Wizard for Scan-X dialog box.
5. Read the dialog box message. Then click on the Next button to continue.
The system displays the Choose Destination Location dialog box.
6. If you agree with the recommended Destination Folder shown at the
bottom of the dialog box, click on the Next button to continue.
If you want a different destination, click on the Browse button and select
another folder. Then click on the Next button to continue.
2-20 Installation and Setup
The system displays the Select Program Folder dialog box.
Installation
and Setup
7. If you agree with the recommended Program Folder shown in the
command line, click on the Next button to continue.
If you want a different folder, type a new folder name or select a folder in
the Existing Folders list. Then click on the Next button to continue.
The system displays the Start Copying Files dialog box.
8. The system prompts you to verify the current settings.
To review or change settings, click on the Back button.
If the settings are correct, click on the Next button to begin copying files.
Installation and Setup 2-21
The system starts copying files from the CD-ROM, and displays the
InstallShield Wizard Complete dialog box when finished.
9. Click on the Finish button to complete the Scan-X installation program.
Scan-X automatically places an icon on the desktop of your computer.
Note: We recommend restarting your computer at this time to ensure that
Scan-X installs properly.
Important: Before you can use your Cobra system, you must set up the parallel
port address (described on page 2-28). For Cobra 3D systems, you must also
enable the Scan-X 3D mode (described on page 2-30).
2-22 Installation and Setup
Installing on Windows 2000 Systems
Installation
and Setup
To install the Scan-X software on a Windows 2000 system, follow the steps
below.
1. Turn on your computer and bring up the Windows desktop.
Note: We strongly recommend closing all Windows programs before installing
Scan-X. This ensures that the software installs properly.
2. Insert the Scan-X installation CD-ROM into your system CD drive.
3. Click on Start. Then highlight and select Run.
The Run dialog box is displayed.
4. Type d: (or the letter of your CD drive) \Disk1\Setup.exe in the
command line or click on the Browse button to locate the correct file.
Then click on the OK button.
-
If the system displays the following dialog box, click on OK and
continue with Step 5 of this procedure.
Installation and Setup 2-23
If the system loads the InstallShield Wizard and displays the Welcome
-
to the InstallShield Wizard for Scan-X dialog box, continue with Step 9
of this procedure.
5. Click on Start. Then highlight and select Run.
The Run dialog box is displayed.
6. Type c:\ZCSetup.exe in the command line and click on OK.
2-24 Installation and Setup
The system displays the following dialog box.
Installation
and Setup
7. Select the Load Driver On Boot check box and click on Install.
8. Reboot your computer and go back to Step 1 of this procedure.
9. Read the dialog box message. Then click on the Next button.
The system displays the Choose Destination Location dialog box.
10. If you agree with the recommended Destination Folder shown at the
bottom of the dialog box, click on the Next button to continue.
If you want a different destination, click on the Browse button and select a
different folder. Then click on the Next button to continue.
Installation and Setup 2-25
The system displays the Select Program Folder dialog box.
11. If you agree with the recommended Program Folder shown in the
command line, click on the Next button to continue.
If you want a different folder, type a new folder name or select a folder
from the Existing Folders list. Then click on the Next button to continue.
The system displays the Start Copying Files dialog box.
12. The system prompts you to verify the current settings.
To review or change settings, click on the Back button.
If the settings are correct, click on the Next button to begin copying files.
2-26 Installation and Setup
The system starts copying files from the CD-ROM, and displays the
Installation
and Setup
InstallShield Wizard Complete dialog box when finished.
13. Click on the Finish button to complete the Scan-X installation program.
Scan-X automatically places an icon on the desktop of your computer.
Note: We recommend restarting your computer at this time to ensure that
Scan-X installs properly.
Important: Before you can use your Cobra system, you must set up the parallel
port address (described on page 2-28). For Cobra 3D systems, you must also
enable the Scan-X 3D mode (described on page 2-30).
Installation and Setup 2-27
Setting the Parallel Port Address and Mode
In order for Scan-X to communicate with Cobra, the parallel port address and
mode need to be set properly. In the event that these settings are incorrect, the
following error message will be displayed when you launch Scan-X.
Note: If your Cobra came with a factory-supplied computer, you can skip this
section (the parallel port on your system was set at the factory).
The parallel port mode needs to be set to ‘Bi-directional’ mode. For on-board
parallel ports, this is done by entering the computer system’s BIOS upon boot
up and changing the configuration setting from 'Standard' to ‘Bi-directional’,
which is also commonly referred to as ‘ECP+EPP’. Consult your Management
Information System Administrator for assistance in setting the parallel port
mode.
2-28 Installation and Setup
The parallel port address setting needs to match the physical port to which the
Installation
and Setup
parallel cable is connected. This is done by editing the Scan-X Configuration
Settings file, SCANX.INI, located in the following default folder:
C:\Program Files\Scan-X\Config
Assign the port address to the appropriate parallel port being used by typing in
either the port number (e.g., 1, 2, 3, 4) or the port address (e.g., &H378). Save
the file by selecting File / Save before exiting.
Installation and Setup 2-29
Enabling Scan-X 3D Mode
This subsection only applies to users who are using Scan-X on a Cobra 3D
system that was purchased without the Factory-supplied Computer option. If
your Cobra 3D system was purchased with the Factory-supplied Computer
option, you can skip this section because Scan-X 3D mode was enabled at the
factory.
To enable Scan-X 3D mode, follow the steps below.
1. Open the SCANX.INI file located in the following default directory:
C:\Program Files\Scan-X\Config
2. Enter a 2 in the Stages field, see below.
3. Save the file by selecting File / Save before exiting.
2-30 Installation and Setup
Registering Scan-X
Installation
and Setup
When you initially start Scan-X, the software displays the Machine Registration
dialog box, which prompts you to register the software. You can register Scan-X
now or later.
To register Scan-X now, follow the steps below.
1. Insert the supplied Options disk into the floppy drive.
2. Enter the serial number of your Cobra (for example, CB1105) in the Serial
Note: The serial number is located on top of the unit.
Number box.
3 Click on the Register button.
To register Scan-X later, simply click on the Demo button to run Scan-X as a
demonstration copy, and register at a later time.
Note: Scan-X comes with a 60 day trial period. After the trial period expires,
you need to register Scan-X in order to continue using the software.
When you are ready to register Scan-X, follow the steps below.
1. In Scan-X, select Register Software in the Help menu.
The Machine Registration dialog box is displayed (see above).
2. Insert the supplied Options disk into the floppy drive.
3. Enter the serial number of your Cobra (for example, CB1105) in the Serial
Number box.
Note: The serial number is located on top of the unit.
4. Click on the Register button.
Installation and Setup 2-31
This page was left blank intentionally.
2-32 Installation and Setup
Section 3
Getting Started
This section describes how to power up and shut down your Cobra system,
access the Scan-X software and its on-line Help, raise and lower the sensor,
perform a scan, and optimize laser settings.
Powering Up Your System
After unpacking your Cobra and installing the Scan-X software on the
associated computer (if applicable), you are ready to power up your Cobra
system.
To do so, follow the steps below.
1. Turn on the computer and monitor.
2. Turn on your Cobra. The power switch is located in the upper-right corner
on the Cobra back panel as shown in Figure 3-1.
Getting Started
Figure 3-1. Power Switch Location
3. Access Scan-X by using one of the following methods:
-
Double click on the Scan-X icon, located on the Windows desktop
-
Left click on the Scan-X icon, and then right click and select Open
from the pop-up menu
-
Click on the Start button, and then select Programs Scan-X
Scan-X
Your Cobra system is powered up and ready to use.
Note: You can perform a normal system shutdown by exiting Scan-X and
Windows, turning off the computer and monitor, and then turning off Cobra.
Getting Started 3-1
Screen Layout (2D Mode)
The Scan-X screen in 2D mode is divided into the areas and windows displayed
below.
3-2 Getting Started
Screen Layout (3D Mode)
Getting Started
The Scan-X screen in 3D mode is divided into the areas and windows displayed
below.
Accessing the Scan-X On-Line Help
The on-line Help topics describe the software functions, explain how to use the
software, and provide information for specific dialog boxes and fields. To access
the Scan-X on-line Help, select Scan-X Help in the Help menu or press F1 on
the keyboard.
You can use the Contents list or Index list to find the topics you want to view.
(See How to View Help Topics on the following page for more information.)
In addition to the on-line Help topics, you can also view examples of
measurements that can be made using Scan-X. Specific parts were measured to
create the various profiles and rasters. These illustrations should be used as a
guide when making your own measurements. To access the measurement
examples, select Measurement Examples in the Help menu.
On-line Help: See the topics, 2D Measurements and 3D Measurements, for
more information.
Getting Started 3-3
How to View Help Topics
To view a topic from the Contents list, follow
the steps below.
1. Access the Scan-X on-line Help, as
described on the previous page.
2. Click on the Contents tab.
3. Double-click on the desired topic book.
Repeat for other books until you see the
desired book, e.g., Windows.
The topic book opens, and a list of
sub-topics is displayed.
4. Double-click on the topic you want to
view, e.g., Sensor Settings Window, or
highlight the topic and click on the
Display button.
- The selected topic is then displayed
as shown on the following page.
To view a topic from the Index list, follow
the steps below.
1. Access the Scan-X on-line Help, as
described on the previous page.
2. Click on the Index tab.
3. Type the text that you are searching for,
e.g., sensor settings.
-
The software displays the topics that
match the text.
4. Double-click on the topic you wish to
view, e.g., Sensor Settings Window, or
highlight the topic and click on the
Display button.
-
The selected topic is then displayed
as shown on the following page.
Note: You can also scroll through the Index list until you find the desired topic.
3-4 Getting Started
Help Topic Window
Getting Started
When you are viewing a single Help topic, the window is divided into the
following two parts:
The top portion, or banner, contains the topic title and navigation buttons.
•
The bottom portion contains the Help text. If it does not fit into one
•
window, use the scroll bar on the right to view the rest of the text. You can
jump to any topic that is shown in green simply by clicking on the link.
If you wish to view a Help topic and use the software at the same time (for
example, when you wish to follow a step-by-step procedure), select Keep Help
on Top
window by dragging the corners, and place where you want by dragging from
the title bar while holding the left mouse button.
On Top in the Options menu, and then change the size of the Help
Getting Started 3-5
Raising and Lowering the Sensor
The sensor mounting pad (Z axis slide) on your Cobra includes the following
two components:
The knurled Focus Knob is located on the right side of the sensor mounting
•
pad, as shown in Figure 3-1, and is used to raise or lower the sensor to focus
the sensor on the surface of a part. Twist the Focus knob clockwise to raise
the sensor and counter-clockwise to lower it (make sure the Locking knob is
not tightened).
The Locking Knob is located on the left side of the sensor mounting pad,
•
as shown in Figure 3-1, and is used to lock the Z axis slide in position when
the sensor is at the optimal position. We recommend that you tighten the
Locking knob before performing a scan.
Note: When you tighten the Locking knob, the sensor cannot be raised or
lowered.
On-line Help: See the topic, How to Focus the Sensor, for more information on
focusing the sensor.
Figure 3-1. Focus Knob and Locking Knob
3-6 Getting Started
How to Perform a Scan: Scanning a Penny
Getting Started
This sub-section includes a tutorial on how to create a profile by scanning a
penny. This tutorial is intended to familiarize you with the basic functions of
Scan-X and help you become familiar with the Cobra motion controls.
In this tutorial you will:
Position a penny, focus the laser sensor, and set scan controls
•
Scan a penny to create a profile
•
Collect height and length measurement results
•
Save the measurement results from the laser scan
•
View the measurement results from the laser scan
•
This tutorial is also documented in the Scan-X on-line help. To access this
procedure follow the steps below.
1. Access Scan-X, as described earlier.
2. In the Help menu, select Scan-X Help.
3. Click on the Contents tab.
4. Double-click on the book, Scan-X Coach: How to Scan a Penny.
5. Double-click on the topic, Introduction to Scan-X Coach.
-
Follow the instructions in the Coach to complete the exercise.
Getting Started 3-7
To create a profile by scanning a penny, follow the steps below.
1. Click on the Laser Home icon and then click on Yes in response to the
prompt.
2. If necessary, click on the Laser Locator button to turn on the Laser
Locator. When turned on, the sensor emits a high intensity laser signal onto
the part and makes it easier to see the laser spot.
3. Position a penny under the sensor so that:
The Lincoln Memorial side of the penny is up.
-
A small red laser spot is displayed on the surface of the penny, near the
-
end of the Lincoln Memorial that is closest to the Cobra system.
4. Click the Laser Locator button to turn off the Laser Locator. This
activates the Laser Focus bar.
-
The Laser Focus bar is located on the left side of the Profile View,
below the Laser Locator button.
Note: The Laser Locator needs to be turned off before attempting to focus the
laser onto the part.
5. Twist the Focus knob to raise or lower the sensor to an approximate focus
distance above the penny.
6. Slowly twist the Focus knob to move the sensor in relation to the surface of
the penny, and observe the Laser Focus bar.
-
The sensor is focused when the Laser Focus bar is green with a red
horizontal bar in the middle of the Laser Focus bar.
On-line Help: See the topic, How to Focus the Sensor, for more information on
focusing the sensor.
3-8 Getting Started
7. Click on the MM icon or select Millimeters in the Units menu.
Getting Started
8. Check the X and Y boxes in the Motion Control window to specify the XY
axes (Cobra 3D only).
9. Click on the Start button in the Motion Control window to identify the
current sensor position as the starting point of the scan.
The value in the start position field(s) should be 0.
-
10. Enter a value of 13 in the end position field (Y end position field for a 3D
scan), as shown below. For a 3D scan, also enter a value of 5 in the X end
position field.
11. Enter a value of 0.05 in the Step box, see below. For a 3D scan, enter a
value of 0.50 in the Step box for both the X and Y axes.
12. Click on the Measure New Profile icon to start the laser scan.
-
The profile is displayed as data is collected (see below).
-
The first column in the Lincoln Memorial is displayed as a “bump” in
the profile. When the scan is complete, all 12 columns are displayed as
“bumps” with some flat areas next to each column (see below).
Getting Started 3-9
13. Click on the Differential icon or select Differential in the Cursors
menu.
14. In the Output window, select Height (Avg) in the first measurement
drop-down box.
15. Click and drag the primary cursor boundaries, so that the cursor includes
the top of a column, as shown below.
16. Click and drag the reference cursor boundaries, so that the cursor includes a
flat area next to the column, as shown below.
The height of the column in the primary cursor is displayed in the
-
Output window next to Height (Avg), and should be between 0.06 and
0.09 mm.
17. In the Output window, check the box next to the Height (Avg).
-
The software automatically lists the height results in the Report View
window.
3-10 Getting Started
18. In the Output window, select Length in the second measurement
Getting Started
drop-down box.
19. Click and drag the primary cursor boundaries to the start of the first column
and the end of the last column in the profile, as shown below.
The position of the reference cursor does not have an effect on this
-
measurement.
The length of the Lincoln Memorial is displayed in the Output window,
-
next to Length, and should be approximately 12.0 mm.
20. In the Output window, check the box next to Length.
The software automatically lists the length results in the Report View
-
window.
21. Click on the Save icon or select Save in the File menu.
-
The Save File dialog box is displayed.
22. Select .sc6 in the Save as Type list.
23. Select the folder where you want to save the file.
24. Enter a filename (for example, Penny_scan).
25. Click on Save.
26. Click on the Report View tab to display the Report View window.
-
The results of the height and length measurements are listed.
-
If a printer is connected to the system, click on the Print button to
output the measurement results to the printer
27. If you performed a 3D scan, click on the Raster tab to display the Raster
View window.
-
The Raster View is composed of multiple profiles, which provide a
top-view, three-dimensional map of the part or feature.
You have successfully completed this tutorial.
Getting Started 3-11
Optimizing Laser Settings
When using your Cobra, you may find it necessary to adjust the Maximum
Exposure and/or Threshold settings to obtain optimal scan results. These two
settings can be manipulated in the Sensor Settings window, which is accessed by
clicking on the Sensor Settings tab.
Maximum Exposure
This value is the maximum amount of time used to measure each point. Use this
control to set the maximum exposure time needed to obtain a valid height
reading. The acceptable values for this setting are from 0.000002 to 0.065535
seconds. The default value is 0.005, which provides acceptable results for most
surfaces.
Note: In most cases, a valid reading can be obtained well within the default
maximum exposure setting.
The Maximum Exposure setting has a significant impact on scan velocity and
time. As you increase the exposure time, the scan velocity decreases, which
increases the time needed to complete the scan. Conversely, when you decrease
the exposure time, the scan velocity increases, and the total scan time decreases.
3-12 Getting Started
Threshold
Getting Started
Set the maximum exposure value based on the reflectivity of the part surface.
For highly reflective part surfaces and/or specular sensors, use shorter
•
maximum exposure values.
For less reflective part surfaces and/or diffuse sensors, use longer maximum
•
exposure values.
If you scan a variety of surfaces, longer maximum exposure settings work
•
best, but may increase the total scan time.
Note: If data is missing as you scan (data drop outs), increase the maximum
exposure. If not, try decreasing the maximum exposure to increase your scan
speed when the length of time for a scan is an issue.
This control sets the laser threshold. The threshold value is represented by a red
line in the Sensor Settings window. Data below the bar is eliminated from the
evaluation and data above the bar is included.
The sensor spot height calculation algorithm disregards pixels with light
intensity below the threshold value. Use the threshold value to eliminate the
effects of unwanted signals, such as secondary reflections.
The threshold value can be set to any integer value between 10 and 255; the
default is 50. Typically, you should set the threshold as low as possible without
including secondary spots above the threshold bar in the Sensor Settings
window. Settings that are too low can produce unreliable data.
Note: The default threshold value (50) works well for most applications and
usually does not need to be adjusted.
Getting Started 3-13
This page was left blank intentionally.
3-14 Getting Started
Section 4
Swapping Sensors
DRS Models
Swapping Sensors
One unique feature of Cobra is that you can quickly and easily replace one
sensor model with another to accommodate your specific application. This
section provides information on the different DRS models available and how to
swap one sensor for another.
Note: The procedure for swapping laser sensors varies, depending on the
configuration of your Cobra. The procedure for changing sensors on Cobra
systems equipped with the video camera option starts on the following page and
the procedure for changing sensors on Cobra systems not equipped with the
video camera option starts on page 4-8. Be sure to follow the procedure that
applies to your system.
There are four different sensor models available for use with Cobra. This table
lists each model and its specifications.
Sensor
Model
DRS-300 Specular 300 µm 1.0 µm 0.125 µm 7-12 µm 17 mm
DRS-500 Specular 500 µm 1.0 µm 0.125 µm 16-23 µm 17 mm
DRS-2000 Diffuse 2000 µm 10 µm 1.0 µm 32-48 µm 31.5 mm
DRS-8000 Diffuse 8000 µm 40 µm 4.0 µm 60-85 µm 50 mm
Swapping Sensors 4-1
Type
Capture
Range
* Standoff is the distance in Z from the lowest point on the sensor to the
middle of the capture range.
Z Accuracy
(within capture
range)
Dynamic
Resolution
Spot
Size Standoff*
Swapping Sensors on Systems Equipped
with the Video Camera Option
This subsection only applies to Cobra systems equipped with the video camera
option, and describes how to remove the video camera assembly and sensor so
that you can swap sensors.
Note: The video camera option can only be used with DRS-300 and DRS-500
lasers; it cannot be used with the DRS-2000 or DRS-8000 lasers.
Removing the Video Camera Assembly and Sensor
To remove the video camera assembly and sensor, follow the steps below. You
will need 2 mm and 3 mm hex key (Allen) wrenches.
1. Power down your Cobra.
Never connect or disconnect the laser sensor cable from the sensor while power
is applied to Cobra. Doing so could seriously damage the sensor.
2. Disconnect the laser sensor cable from the top of the sensor.
3. Use a 2 mm hex key (Allen) wrench to remove the four screws securing the
camera cover to the video camera assembly (see Figure 2-4 on page 2-6).
4-2 Swapping Sensors
4. Use a 3 mm hex key (Allen) wrench to remove the two screws securing the
Swapping Sensors
video camera to the camera mounting plate (see Figure 4-1).
The camera is still attached to the mounting plate via the LED power wires (red
and black). These two wires are fairly delicate. Therefore, keep the camera close
to the mounting plate to avoid damaging either of these two wire.
Figure 4-1. Removing the Camera Mounting Screws
Swapping Sensors 4-3
5. Carefully swing the video camera to the right (or left) to reveal the lower
sensor mounting screw. Then use a 3 mm hex key (Allen) wrench to remove
the screw. See Figure 4-2.
Figure 4-2. Removing the Lower Mounting Screw
6. Hold the camera assembly, mounting plate, and sensor as you remove the
other two sensor mounting screws (see Figure 4-3). Use a 3 mm hex key
(Allen) wrench.
Figure 4-3. Removing the Upper Two Mounting Screws
4-4 Swapping Sensors
7. Remove the camera assembly, camera mounting plate, and sensor, and set
Swapping Sensors
down gently.
8. When ready, reinstall the video camera assembly, mounting plate, and
replacement sensor, as described in the next subsection.
Note: The video camera option can only be used with the DRS-300 and
DRS-500 lasers; it cannot be used with the DRS-2000 or DRS-8000 lasers.
This completes the procedure for removing the video camera assembly and
sensor.
Mounting the Video Camera Assembly and Sensor
To mounting the video camera assembly and replacement sensor, follow the
steps below. You will need 2 mm and 3 mm hex key (Allen) wrenches.
1. Place the DRS-300 or DRS-500 laser sensor on a flat surface, label side up.
Then set the camera mounting plate and attached camera on the front of the
sensor. Use the two locator pins on the back of the camera mounting plate
to correctly position it on the sensor.
Note: The video camera option can only be used with the DRS-300 and
DRS-500 lasers; it cannot be used with the DRS-2000 or DRS-8000 lasers.
2. Refer to Figure 4-4 on the following page and perform the following steps:
a. Carefully swing the camera assembly to the right (or left) to reveal the
lower screw hole in the camera mounting plate. Then insert one of the
three partially-threaded screws into the hole and push it through the
camera mounting plate and sensor.
The camera is still attached to the mounting plate via the LED power wires (red
and black). These two wires are fairly delicate. Therefore, keep the camera close
to the mounting plate to avoid damaging either of these two wire
b. With your left (or right) hand, carefully pick up the camera mounting
plate and laser sensor, and then position and hold them on the sensor
mounting pad. Use the two positioning pins on the sensor mounting
pad to align the sensor and camera mounting plate over the mounting
holes in the mounting pad. When positioning the components, make
sure that the camera mounting plate remains aligned on the sensor.
c. With your free hand, use a 3 mm hex key (Allen) wrench to tighten the
partially-threaded screw you inserted into the lower mounting hole
(Step 2a) and secure the camera mounting plate and sensor to the
sensor mounting pad.
Swapping Sensors 4-5
Figure 4-4. Installing the Camera Mounting Plate and Sensor
3. Use a 3 mm hex key (Allen) wrench and the two screws removed in Step 4
of the previous procedure to resecure the camera to the camera mounting
plate (see Figure 4-5).
Figure 4-5. Securing the Camera to the Mounting Plate
4-6 Swapping Sensors
4. Insert the other two partially-threaded screws into the upper two screw
Swapping Sensors
holes in the camera mounting plate and sensor. Then use a 3 mm hex key
(Allen) wrench to tighten the screws firmly (see Figure 4-6).
Figure 4-6. Installing the Upper Two Screws
Never connect or disconnect the laser sensor cable from the sensor while power
is applied to Cobra. Doing so could seriously damage the sensor.
5. Connect the laser sensor cable to the top of the sensor.
6. Check the camera focus and alignment, as described in Appendix B.
This completes the procedure for mounting the video camera assembly and
replacement sensor.
Swapping Sensors 4-7
Swapping Sensors on Systems
with the Video Camera Option
This subsection only applies to Cobra systems not equipped with the video
camera option, and describes how to remove and replace sensors.
Removing a Sensor
To remove the sensor currently installed on your Cobra system, follow the steps
below. You will need a 3 mm hex key (Allen) wrench.
1. Power down your Cobra system.
Never connect or disconnect the laser sensor cable from the sensor while power
is applied to Cobra. Doing so could seriously damage the sensor.
2. Disconnect the laser sensor cable from the top of the sensor, see Figure 4-7.
Hold onto the sensor as you remove the three sensor mounting screws. If the
sensor is not supported, it can fall off the sensor mounting pad and be damaged.
3. Hold the sensor with one hand and remove the three M4 socket-head cap
mounting screws with your free hand. Use a 3 mm hex key (Allen) wrench.
Not
Equipped
Figure 4-7. Removing the Laser Sensor
4-8 Swapping Sensors
4. Remove the sensor from the sensor mounting pad, by pulling it away from
Swapping Sensors
the Cobra.
5. When you are ready, install the replacement sensor, as described in the next
procedure.
This completes the procedure for removing the laser sensor.
Mounting a Sensor
To mount a sensor onto your Cobra system, follow the steps below. You will
need a 3 mm hex key (Allen) wrench.
1. Power down your Cobra system.
2. Mount the laser sensor onto the sensor mounting pad. Use the two
positioning pins to align the sensor correctly over the mounting holes, see
Figure 4-8 below.
Note: Mount the sensor so that the laser sensor connector is on the left side of
the sensor as shown in Figure 4-8.
Figure 4-8. Mounting a Sensor
Swapping Sensors 4-9
3. Insert the three mounting screws into the mounting holes, and tighten with a
3 mm hex key (Allen) wrench
Never connect or disconnect the laser sensor cable from the sensor while power
is applied to Cobra. Doing so could seriously damage the sensor.
4. Connect the sensor cable to the top of the sensor, see Figure 4-8 on the
previous page.
This completes the procedure for mounting a sensor.
4-10 Swapping Sensors
Section 5
Adjusting the Sensor
Mounting Pad
Adjusting the
Sensor Mounting Pad
This section describes how to adjust the rotational and vertical mounting
position of the sensor mounting pad (Z slide). It may be necessary to adjust the
rotational mounting position of the mounting pad in the event of a certification
failure and any time the vertical position of the mounting pad is altered. The
vertical position of the mounting pad may need to be altered to fit a specific
application in the event that the slide cannot be moved into the desired position
using the Focus knob.
Note: If the mounting position of the sensor mounting pad (Z slide) is altered in
any way from the factory installed position, your Cobra should be re-certified to
ensure system accuracy. See the topic, System Certification, in Section 2 for
more information. Consult your local authorized sales representative for more
information on field certification of your Cobra system.
Rotational Alignment
The rotational alignment procedure aligns the sensor mounting pad so it is
square to the working surface. Before performing this procedure, contact your
local authorized sales representative to determine whether or not alignment is
necessary. This procedure requires that Cobra is installed and level.
Note: The sensor mounting pad was pre-aligned and your system was certified
at the factory (see the topic, System Certification, in Section 2 for more
information). The following procedure will disrupt the alignment and void the
certification of your Cobra system.
To rotationally align the sensor mounting pad follow the steps below.
1. Remove the DRS laser sensor, as described in Section 4.
2. Loosen the Locking knob (see Figure 5-1).
Adjusting the Sensor Mounting Pad 5-1
3. Twist the Focus knob to raise or lower the sensor mounting pad along the Z
axis slide so that the two M4 socket-head cap screws used to secure the
mounting pad to the system are visible through the access holes in the
mounting pad (see Figure 5-1).
Figure 5-1. Sensor Mounting Pad Screws
4. Place a machinist square or other quality square tool on the work surface,
parallel to the X axis, and observe whether or not both of the positioning
pins on the sensor mounting pad make contact with the square tool, as
shown in Figure 5-2 on the following page.
-
If both pins touch the square tool, go to Step 9.
-
If either of the two pins do not touch the square tool, go to Step 5.
5-2 Adjusting the Sensor Mounting Pad
Adjusting the Sensor
Mounting Pad
Figure 5-2. Rotational Alignment
5. Use a 3 mm hex key (Allen) wrench to loosen (do not remove) the two M4
socket-head cap screws used to secure the sensor mounting pad to the Cobra
main unit (see Figure 5-1 on the previous page).
6. Gently rotate the sensor mounting pad until both positioning pins make
contact with the square tool.
7. Firmly retighten the two screws loosened in Step 5.
8. Verify that both positioning pins still make contact with the square tool after
tightening the sensor mounting pad screws.
-
If both pins touch the square tool, go to Step 9.
-
If either of the two pins do not touch the square tool, go back to Step 5.
9. Reinstall the laser sensor, as described in Section 4.
This completes the procedure for rotationally aligning the sensor mounting pad.
Adjusting the Sensor Mounting Pad 5-3
Vertical Adjustment
In order to satisfy specific application requirements, you may find it necessary
to adjust the vertical position of the sensor mounting pad. You can move the
sensor mounting pad 25.4 mm (1.0") with this procedure.
To adjust the vertical position of the sensor mounting pad, follow the steps
below.
Note: The sensor mounting pad was pre-aligned and your system was certified
at the factory (see the topic, System Certification in Section 2 for more
information). The following procedure will disrupt the alignment and void the
certification of your Cobra system.
1. Remove the DRS laser sensor, as described in Section 4.
2. Loosen the Locking knob (see Figure 5-3).
3. Twist the Focus knob to raise or lower the sensor mounting pad along the Z
4. Use a 3 mm hex key (Allen) wrench to remove the two M4 socket-head cap
axis slide so that the two M4 socket-head cap screws used to secure the
mounting pad to the system are visible through the access holes in the
mounting pad (see Figure 5-3).
screws used to secure the sensor mounting pad to the Cobra main unit (see
Figure 5-3).
Figure 5-3. Sensor Mounting Pad Screws
5-4 Adjusting the Sensor Mounting Pad
5. Raise or lower the sensor mounting pad to the desired position.
Adjusting the Sensor
Mounting Pad
6. Verify that at least one pair of access holes in the sensor mounting pad is
aligned with a pair of mounting screw holes in the Y axis arm on Cobra.
Adjust the position of the mounting pad if necessary.
Figure 5-4. Aligning the Sensor Mounting Pad
7. Screw the two M4 socket-head cap screws removed in Step 4 into the sensor
mounting pad access holes, and tighten. Use a 3 mm hex key (Allen)
wrench)
8. Perform Steps 4 through 8 of the Rotational Alignment procedure described
previously in this section to verify the rotational alignment of the sensor
mounting pad.
9. Reinstall the DRS laser sensor, as described in Section 4.
This completes the procedure for adjusting the vertical position of the sensor
mounting pad.
Adjusting the Sensor Mounting Pad 5-5
This page was left blank intentionally.
5-6 Adjusting the Sensor Mounting Pad
Section 6
Troubleshooting
Troubleshooting
This section provides information that will help you troubleshoot and resolve
system problems. If the solutions do not resolve your system problem(s), contact
your local authorized sales representative for further assistance.
Note: Refer to the Scan-X Reference Guide (P/N 790338) for troubleshooting
information related to the Scan-X software.
Problem Possible Cause Possible Solution
Cobra does not powerupMain power is off Turn on the main power
Scan-X does not detect
Cobra
Cobra power cord is
not connected to
Cobra
Cobra power cord is
not connected to the
main power source
Faulty wall outlet Use different wall outlet
Faulty Cobra power
cord
Parallel port is not set
to 'bi-directional'
Parallel port
designation is not set
Plug Cobra power cord into the
power cord receptacle on the Cobra
back panel
Connect the Cobra power cord to the
main power source
Repair current wall outlet
Reset circuit breaker
Make sure system is plugged into an
outlet that meets the system power
requirements
Swap suspected faulty power cord
for known good one; replace if
necessary
Set the parallel port to 'bi-directional'
Specify the parallel port being used
by Cobra, as described in Section 2
Troubleshooting 6-1
Faulty parallel cable Swap suspected faulty cable for
know good one; replace if necessary
Problem Possible Cause Possible Solution
Computer monitor does
not turn on
Computer monitor turns
on, but the screen is
blank
LCD screen does not
turn on when Cobra is
powered up
LCD screen turns on, but
screen is blank
Main power is off Turn on the main power
Monitor is not
connected to the main
power source
Faulty monitor Swap suspected faulty monitor for
Monitor is not
connected to the
computer
Faulty monitor Check if monitor works correctly on
LCD Screen Power
cable is disconnected
Faulty LCD screen Swap suspected faulty LCD screen
LCD screen is not
connected to camera
Connect monitor to the main power
source
known good one; replace monitor if
necessary
Connect the monitor to the computer
another system; replace if necessary
Verify that the LCD Screen Power
cable is connected to the back of
Cobra and the top of the camera (see
Figure 2-12)
for known good one; replace LCD
screen if necessary
Verify that Video Signal cable is
connected to the top of the camera
and back of the LCD screen (see
Figure 2-13)
Faulty LCD screen Swap suspected faulty LCD screen
for known good one; replace LCD
screen if necessary
Keyboard is not
functional
Faulty connection
between keyboard and
computer
Faulty keyboard Swap known good keyboard for
Check connection between keyboard
and computer
suspected faulty one; replace if
necessary
6-2 Troubleshooting
Problem Possible Cause Possible Solution
Troubleshooting
Sensor gives
inaccurate data
Unable to obtain
readings
Sensor does not turn
on and/or the laser
indicator does not light
Inappropriate step size Adjust the step size
Dirty lenses Check lenses for dirt; clean if
necessary
Inaccurate sensor
model and serial
numbers
Loose laser sensor
cable connection
Dirty sensor lenses Check lenses for dirt; clean if
Faulty sensor Swap suspected faulty sensor for
Loose laser sensor
cable connection
Computer power is off Power up computer
Cobra power is off Power up Cobra
Check the model and serial number
in the Sensor Information box (in the
Sensor Settings window) to see if
they match the sensor on your
system; adjust if necessary
Tighten connection
necessary
known good one; replace if
necessary
Tighten connection
Sensor will not collect
data
Sensor arm will not
move
Troubleshooting 6-3
Sensor is not focused Focus sensor
Loose laser sensor
cable connection.
Arm has reached its
end of travel limit
Cobra power is off Power up Cobra
Tighten connection
Move the arm in the opposite
direction
This page was left blank intentionally.
6-4 Troubleshooting
Appendix A
Setting the
Display Properties
This appendix describes how to adjust the display settings on your system in
order to view laser scans in “real-time.”
When you perform a laser scan in Scan-X, the data points are plotted in the
Profile View as the sensor moves over the part and takes height measurements.
In other words, as the sensor moves across the part, the profile of the surface
appears in the Profile View at the same rate the sensor is moving. This is
referred to as seeing the scan in “real-time.”
On-line Help: See the topic, How to Scan a Part.
If you perform a laser scan, and are unable to see the scan in “real-time,” you
may need to reduce one of the following display properties:
• Number of displayed colors
• Hardware Acceleration
Note: You only need to adjust the display properties if you are unable to see a
laser scan in “real-time.” Do not make any adjustments if the data is displayed in
the Profile View at the same rate the sensor is moving.
Setting the Display Properties
Note: Try reducing the number of displayed colors first. If you still cannot see
the scan in “real-time,” try reducing the hardware acceleration setting.
Setting the Display Properties A-1
Reducing the Number of Displayed Colors
To reduce the number of displayed colors, follow the steps below.
1. Close all programs. The Windows desktop should now be displayed.
2. Right-click on the Windows desktop and select Properties in the pop-up
menu to display the Display Properties window.
Note: Alternately, you can select Settings / Control Panel in the Windows Start
menu and then double-click on Display in the Control Panel window to display
the Display Properties window.
3. Click on the Settings tab. Something similar to the following is displayed.
4. In the Colors drop-down box, select 256 Colors.
5. Click on OK.
6. Restart your computer.
7. Access Scan-X and perform a laser scan.
On-line Help: See the topic How to Scan a Part for more information.
Note: If you are still unable to see the scan in “real-time,” try reducing the
hardware acceleration setting, as well (described on the following page).
A-2 Setting the Display Properties
Reducing the Hardware Acceleration
Setting the
Display Properties
To reduce the hardware acceleration setting, follow the steps below.
1. Select Settings / Control Panel in the Windows Start menu.
2. Highlight and select Display.
3. Click on the Settings tab. The Display Properties window is displayed
(see image on the previous page).
4. Click on the Advanced button.
5. Click on the Performance tab (Windows 98 Second Edition) or the
Troubleshooting tab (Windows 2000).
6. Reduce the hardware acceleration by moving the Hardware acceleration
slider to the left, one setting.
7. Click on OK.
8. Restart your computer.
9. Access Scan-X and perform a laser scan.
On-line Help: See the topic, How to Scan a Part, for more information.
If you are still unable to see the scan in “real-time” repeat the above procedure
until one of the following conditions is met:
• You are able to see the laser scan in “real-time”
• You moved the Hardware acceleration slider all the way to the left, as
shown here
Note: If you have reduced the number of displayed colors and the hardware
acceleration, but still are unable to see the scan in “real-time,” contact your local
authorized sales representative for further assistance.
Setting the Display Properties A-3
This page was left blank intentionally.
A-4 Setting the Display Properties
Appendix B
Focusing & Aligning
the Camera
This appendix only applies to Cobra systems equipped with the video camera
option, and describes how to focus and align the camera.
Focusing the Camera
To focus the camera, follow the steps below. You will need a 2 mm hex key
(Allen) wrench.
1. Power up your Cobra system and access Scan-X.
2. Use the Focus Indicator in Scan-X to focus the sensor over the surface of a
part. Observe the image of the part on the LCD screen.
Focusing and
Aligning the Camera
On-line Help: See the topic, How to Focus the Sensor, for more information.
-
If the image is sharp and in focus, stop here. You do not need to
perform the rest of this procedure.
-
If the image is not sharp and not in focus, continue with Step 3 of this
procedure.
3. Use the Locking knob to lock the Z axis slide and sensor in position, as
described in Section 3.
4. Use a 2 mm hex key (Allen) wrench to remove the four screws securing the
camera cover to the camera assembly (see Figure 2-4 on page 2-6).
Focusing and Aligning the Camera B-1
5. Turn the camera collar in a counter-clockwise direction, and loosen it
completely (see Figure B-1). The camera is now free to move up and down.
Figure B-1. Focusing the Camera
6. Manually, adjust the vertical position of the camera until the image on the
LCD screen is sharp and in focus. Then, without moving the camera,
retighten the camera collar firmly.
Important: After tightening the camera collar, verify that the image on the
LCD screen is still in focus. If it is not, repeat Steps 5 and 6 until the image
remains in focus.
7. Reinstall the camera cover.
This completes the procedure for focusing the video camera on your Cobra
system.
B-2 Focusing and Aligning the Camera
Aligning the Camera to the DRS Laser Sensor
Focusing & Aligning
the Camera
To align the video camera on your Cobra system to the DRS laser sensor, follow
the steps below. You will need a 2 mm hex key (Allen) wrench.
1. Power up your Cobra system and access Scan-X.
2. Focus the sensor over the surface of a part, and observe the laser spot on the
LCD display.
On-line Help: See the topic, How to Focus the Sensor, for more information.
If the laser spot appears centered in the LCD display, stop here. You do
-
not need to perform the rest of this procedure.
If the laser spot does not appear centered in the LCD display, continue
-
with Step 3 of this procedure.
3. Use a 2 mm hex key (Allen) wrench to remove the four screws securing the
camera cover to the camera assembly (see Figure 2-4 on page 2-6).
4. Align the camera by moving it slightly, as described below, while observing
the position of the laser spot on the LCD screen. Continue adjusting the
horizontal and/or vertical adjustment screws until the laser spot appears
centered in the display. Use a 2 mm hex key (Allen) to adjust the screws.
-
To move the laser spot to the right, tighten the horizontal adjustment
screw (see Figure B-2 on the following page)
-
To move the laser spot to the left, loosen the horizontal adjustment
screw (see Figure B-2 on the following page)
-
To move the laser spot up, loosen the vertical adjustment screw (see
Figure B-2 on the following page)
-
To move the laser spot down, tighten the vertical adjustment screw (see
Figure B-2 on the following page)
Focusing and Aligning the Camera B-3
Figure B-2. Camera Alignment Screws
5. Reinstall the camera cover.
This completes the procedure for aligning the video camera on your Cobra
system to the DRS laser sensor.
B-4 Focusing and Aligning the Camera
Index
Index
A
Accessing Scan-X on-line help, 3-3
Adjusting the mounting pad, 5-1
Alignment
Camera, B-3
Rotational, 5-1
C
Camera
Alignment, B-3
Focusing, B-1
Camera assembly, 1-5
Certification, 2-1
Cobra, description of, 1-1
Components, 1-2
Cobra 2D, 1-2
Cobra 3D, 1-3
Cobra with video camera, 1-4
Computer requirements, 1-8
DRS models, 4-1
DRS-2000, 4-1
DRS-300, 4-1
DRS-500, 4-1
DRS-8000, 4-1
E
Electrical safety, vii
Enabling Scan-X 3D mode, 2-30
Explosive atmosphere, viii
F
Focus knob, 1-4, 3-6
Focusing the camera, B-1
H
Help topic window, 3-5
D
Dimensions, 1-6, 1-7
Display properties, A-1
Reducing the hardware acceleration, A-3
Reducing the number of colors, A-2
Document
Conventions, iii
Organization, i
Index i
How to
Optimize laser settings, 3-12
Perform a scan, 3-7
Raise and lower the sensor, 3-6
View help topics, 3-4
I
O
Installation
Cobra 2D, 2-2
Cobra 3D, 2-14
Scan-X, 2-19
Windows 2000, 2-23
Windows 98, 2-19
Sensor, 2-2
Video camera and LCD assemblies, 2-6
Installation and setup, 2-1
Installing a sensor, 4-9
Installing the video camera, 4-5
Intended audience, ii
L
Laser
Safety, v
Safety markings, vi
Laser LED, 1-5
Laser sensor cable, 1-5
LCD screen, 1-5
Locking knob, 1-4, 3-6
Lowering the sensor, 3-6
M
Maximum exposure, 3-12
Medical, viii
More laser safety information, vi
Mounting pad, 1-4, 5-1
N
OGP Customer Service, iv
Operating environment, 1-6
Optimizing laser settings, 3-12
Organization, i
P
Parallel port, 1-4
Setting the address and mode, 2-28
Power
cord receptacle, 1-5
LED, 1-5
switch, 1-4
Power cord receptacle, 1-5
Power requirements, 1-6
Power switch, 1-4
R
Radioactive, viii
Raising the sensor, 3-6
Rated environment, 1-6
Reducing the hardware acceleration, A-3
Reducing the number of displayed colors, A-2
Registering Scan-X, 2-31
Registration, 2-31
Related publications, ii
Removing a sensor, 4-8
Removing the video camera, 4-2
Requirements
Computer, 1-8
Workbench, for Cobra 3D, 2-14
Rotational alignment, 5-1
Nuclear, viii
ii Index
S
Index
T
Safety
Accessories, viii
Electrical, vii
Laser, v
Liquids, vii
Power and grounding, vii
Power cord, vii
Servicing, vii
Unsafe operating environments, viii
Safety markings, laser, vi
Scan-X
Enabling 3D mode, 2-30
Icon, 3-1
Installation, 2-19
Windows 2000, 2-23
Windows 98, 2-19
On-line help, 3-3
Registration, 2-31
Screen layout (2D mode), 3-2
Screen layout (3D mode), 3-3
Tutorial, 3-7
Screen layout
2D mode, 3-2
3D mode, 3-3
Setting the parallel port address and mode, 2-28
Settings, 3-12
Maximum exposure, 3-12
Threshold, 3-13
Special symbols, iv
Specifications, 1-6
Suitable surface, 2-14
System, power up, 3-1
System certification, 2-1
Threshold, 3-13
Thumb wheel, 1-4
Troubleshooting, 6-1
V
Vertical adjustment, 5-4
W
Windows
2000, 2-23
98 Second Edition, 2-19
X
X axis scan length, 1-6
Y
Y axis scan length, 1-6
Z
Z axis adjustment range, 1-6
Index iii
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Caution
This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in
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