Quadra-Chek® 200
User’s Guide
Quadra-Chek® 200
User’s Guide
Metronics, Inc.
Bedford, New Hampshire, USA
Proprietary Notice
Disclaimer
Trademarks
All information set forth in this document, all rights to such information, any
and all inventions disclosed herein and any patents that might be granted by
employing the materials, methods, techniques or apparatus described herein
are the exclusive property of Metronics Incorporated, Bedford, New Hampshire.
No part of this document may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of Metronics Incorporated. The information contained herein is designed only for use with
the Quadra-Chek 200 Digital Readout. Metronics Incorporated is not responsible for any use of this information as applied to any other apparatus.
The information contained in this document is subject to change without
notice. Metronics Incorporated assumes no responsibility or liability for any
errors or inaccuracies contained herein, or for incidental or consequential
damage in connection with the furnishing, performance, or use of this guide.
Metronics Inc. shall not be liable to the purchaser of this product or third
parties for damages, losses, costs, or expenses incurred by the purchaser or
third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or failure to
strictly comply with Metronics Incorporated’s operating and maintenance
instructions.
Metronics, Quadra-Chek, Quadra-Chek 200, and QC200 are registered trademarks of Metronics Incorporated.
Safety & Maintenance
Considerations
Other product names used herein are for identification purposes only and
may be trademarks of their respective owners. Metronics Incorporated disclaims any and all rights to those marks.
General safety precautions must be followed when operating the system.
Failure to observe these precautions could result in damage to the equipment,
or injury to personnel. It is understood that safety rules within individual
companies vary. If a conflict exists between the material contained in this
guide and the rules of a company using this system, the more stringent rules
should take precedence.
Although Metronics strongly recommends that you read all parts of this guide,
it is essential for reliable and safe operation to read the first portions up to and
including Chapter 3: Operation, prior to operating the QC200.
Location & Mounting
Cleaning
Electrical
General Maintenance
The QC200 must be placed or mounted on a stable, reliable surface. If the
QC200 should fall, it could become seriously damaged and more importantly could cause injuries to the user. For mounting instructions, refer to
the Getting Started section of Chapter 3: Operation, for the mounting bolt
hole pattern.
Use only a cloth dampened with water and a mild detergent for cleaning the
exterior surfaces. Never use abrasive cleaners, and never use strong detergents or solvents. Only dampen the cloth, do not use a cleaning cloth that is
dripping wet.
Do not allow the power cord to be located such that it can be walked on or
create a tripping hazard.
WARNING
Unplug the QC200 from the electrical outlet before cleaning.
WARNING
The QC200 is equipped with a 3-wire power plug that includes
a separate ground connection. Always connect the power plug
to a 3-wire grounded outlet. The use of 2-wire power plug
adapters or any other connection accessories that remove the
third grounded connection create a safety hazard and should
not be permitted. If a 3-wire grounded outlet is not available,
ask your electrician to provide one.
Unplug the QC200 from the wall outlet and seek the assistance of a qualified
service technician if:
• The power cord is frayed or damaged or the power plug is damaged
• Liquid is spilled or splashed onto the enclosure
• The QC200 has been dropped or the exterior has been damaged
• The QC200 exhibits degraded performance or indicates a need for
service some other way
Backup Battery
Charging
The QC200 utilizes an internal battery to maintain system configuration
settings during power interruptions. A battery circuit charges this backup
battery during periods of normal operation.
When the QC200 is used on a daily basis, the backup battery will be adequately charged to maintain configuration settings during power outages.
However, over extended periods of nonuse, the battery might lose the charge
necessary to maintain configuration settings. To keep the backup battery
charged over extended periods of nonuse, apply power to the QC200 and
leave it turned on for a minimum of 2 days each month.
FCC Compliance
Statement
FCC Rule NP15R Rev. 23, June, 1989
This equipment has been tested and found to comply 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 instructions in this guide, may cause harmful interference to radio communication. 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.
Shielded cables must be used with this unit to ensure compliance with Class
A FCC limits. The connection of a nonshielded equipment interface cable to
this equipment will invalidate the FCC Certification of this device and may
cause interference levels which exceed the limits established by the FCC for
this equipment. It is the responsibility of the user to obtain and use a shielded
equipment interface cable with this device. Do not leave cables connected to
unused interfaces. Changes or modifications not expressly approved by the
manufacturer could void the user’s authority to operate the equipment.
FF
or Canadian Uor Canadian U
F
or Canadian U
FF
or Canadian Uor Canadian U
This Class “A” digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
sers:sers:
sers:
sers:sers:
Cet appareil numérique de la classe “A” respecte toutes les exigences du
Reglement sur le matériel brouilleur du Canada.
Guide Part Number: 11A10487
Printing History:
April, 2000 First Printing Revision 1.0
June, 2000 Second Printing Revision 2.0
November, 2001 Third Printing Revision 3.0
November, 2002 Fourth Printing Revision 3.1
December, 2004 Fifth Printing Revision 4.0
Software Version: 1.23
Printed in the USA
About this Guide
Who Should Read
This Guide
What This Guide
Covers
Introduction
The material in this guide is divided into eight chapters. Topics range from
basic operating instructions to programming and system configuration. Chapters 1 through 3 contain the essential information to use the QC200. Do not
operate the QC200 unless the material in these chapters is thoroughly understood.
Keep this guide in a convenient location. Refer to it any time additional
information about the use and operation of the QC200 is needed. Use the
index to locate information by subject. Additional information related to
this guide can be found on the Internet at www.metronics.com/help.html.
This guide is intended for operators, technicians, supervisors, and dealer representatives.
NOTE
System setup and configuration instructions provided in chapter
7 are intended for qualified supervisors, dealer representatives
and OEMs only. Operators should not attempt to alter the
configuration of the QC200.
Chapter 1: Overview
This chapter describes the use and application of the QC200 digital readout
and includes an annotated drawing and technical specifications.
Chapter 2: Quick-start
Use this chapter as a basic user tutorial. The quick start demonstration provides QC200 operation instructions with a minimum of details.
Chapter 3: Operation
This chapter includes detailed descriptions of controls and indicators, and
instructions for measuring, constructing, creating, and tolerancing features.
Conventions & Terms
Chapter 4: Programming
This chapter contains instructions for recording, running, and editing QC200
programs.
Chapter 5: Edge detectors
Information in this chapter provides background and reference material regarding edge detector installation and operation.
Chapter 6: Communications
Use this chapter to connect the QC200 to a printer or computer via the RS232 or parallel port.
Chapter 7: Setup
This chapter contains system configuration instructions for qualified supervisors and dealer representatives.
Chapter 8: Reference
This chapter contains additional information about quantization error, best
fit algorithms, and repeatability.
The terms Quadra-Chek 200, QC200 in this guide refer to the Quadra-Chek
200 digital readout. System refers to the QC200 and the measuring device
connected to it.
Comparator refers to any device intended to measure parts in 2 dimensions.
Crosshairs and edge detector refer to the probing method of the connected measur-
ing device. Probing refers to the process of measuring a point on a feature.
A program is simply a series of key-presses used to perform measurements and
stored by the system for later use.
Icons
Type Styles
This guide uses the following icons to highlight information:
Warning
The raised hand icon warns of a situation or condition that can lead to personal injury or death. Do not proceed until the warning is read and thoroughly understood. Warning messages are shown in bold type.
Caution
The exclamation point icon indicates a situation or condition that can lead to
equipment malfunction or damage. Do not proceed until the caution message is read and thoroughly understood. Caution messages are shown in bold
type.
Note
The note icon indicates additional or supplementary information about an
activity or concept. Notes are shown in bold type.
Warnings, cautions, and notes are shown in this typeface.
Italics indicate menu items, front panel keys, input fields, or soft keys.
Measurement Polarity
Display Resolution
in this Guide
Accuracy & Precision
System Configuration
& Setup
Instructions in this guide assume that:
• Moving crosshairs to the right causes the X axis counts to increase in a
positive direction; 1 to 2 to 3 and so on.
• Moving crosshairs up causes the Y axis counts to increase in a positive
direction; 1 to 2 to 3 and so on.
• Rotating crosshairs counterclockwise causes the Q axis counts to in
crease in a positive direction; 1 degree to 2 degrees to 3 degrees and
so on.
• To reverse the count direction of any axis, see the encoders section of
chapter7: setup.
Generally, the display resolution shown in this guide is one ten-thousandth
of an inch (0.0001in) or two microns (0.002mm). Display resolutions in
this guide are examples only. User display resolutions are likely to vary according to the specific application.
Measurement accuracy is determined by the resolution of the encoders on the
measuring device. Generally, the display resolution of the QC200 can exceed
the encoder resolution. Setting the display resolution to exceed the encoder
resolution does not increase measurement accuracy. See chapter 7: setup for
more information.
All system setup and configuration must be performed by an authorized
Metronics distributor or OEM. Setup includes calibration with the measuring device and configuration of non-linear error compensation (NLEC) if
needed.
Anytime the QC200 is connected to a different measuring device, it is necessary to perform configuration and setup again. Qualified supervisory personnel should refer to chapter 7: setup or contact their Metronics distributor
for assistance.
WARNING
Electrical shock risk: do not open the QC200 enclosure. There
are no user-serviceable components or assemblies inside.
Contact your Metronics distributor for service and maintenance.
ContentsContents
Contents
ContentsContents
1 Overview.................................................................................. 1-1
Specifications .................................................................................... 1-5
2 Quick-Start Demonstration ................................................... 2-1
Before You Begin ...............................................................................2-1
Getting Started ................................................................................... 2-1
Safety Reminders .............................................................................. 2-2
Location and mounting ............................................................ 2-2
Checking connections ............................................................. 2-2
Power cord and plug ............................................................... 2-2
Power surge suppressor ......................................................... 2-2
Liquids .................................................................................... 2-2
Configuration & System Setup................................................. 2-2
Applying power .................................................................................. 2-3
Power-up screen ..................................................................... 2-3
Adjusting LCD tilt .................................................................... 2-3
Adjusting LCD contrast............................................................ 2-4
Selecting measurement and display modes ............................ 2-4
Probing methods ..................................................................... 2-5
To select optical edge/crosshair probe .................................... 2-5
Backward/forward annotation .................................................. 2-6
Skewing the Part ................................................................................ 2-7
To skew a part ......................................................................... 2-7
Set the Datum .................................................................................... 2-10
To construct a datum ................................................................ 2-10
Measuring Lines ............................................................................... 2-14
To measure a line .................................................................... 2-14
Measuring Circles ............................................................................. 2-17
To measure a circle ................................................................. 2-17
Tolerancing ........................................................................................ 2-20
Perform a true position tolerance on a circle ............................ 2-20
Contents-1
Table of Contents
3 Operation................................................................................. 3-1
Using the QC200 ............................................................................... 3-1
Getting Started ................................................................................... 3-2
Safety Reminders .............................................................................. 3-2
Location and mounting ............................................................ 3-2
Power cord and plug ............................................................... 3-2
Power surge suppressor ......................................................... 3-2
Liquids .................................................................................... 3-2
Checking connections ............................................................. 3-2
Configuration & System Setup................................................. 3-3
Applying power .................................................................................. 3-3
Power-up screen ..................................................................... 3-3
Adjusting LCD tilt .................................................................... 3-4
Adjusting LCD contrast............................................................ 3-4
Controls & Display ............................................................................. 3-5
Mode selection keys................................................................ 3-5
Feature selection keys ............................................................ 3-7
Soft keys ................................................................................. 3-9
Command keys ....................................................................... 3-9
Arrow keys .............................................................................. 3-10
Zero axes keys ........................................................................ 3-10
Fast track keys ........................................................................ 3-11
Numeric keypad ...................................................................... 3-11
Send/print ............................................................................... 3-12
LCD on/off............................................................................... 3-12
Menu key .................................................................................3-12
Menus ................................................................................................3-13
Setup menu ............................................................................. 3-13
Program (prog) menu ............................................................. 3-13
Extra menu .............................................................................. 3-14
Clear menu ............................................................................. 3-16
Edge menu ............................................................................. 3-17
LCD screens ..................................................................................... 3-18
DRO screen ............................................................................ 3-19
Data screens........................................................................... 3-19
Graphic screens ...................................................................... 3-20
Contents-2
Quadra-Chek® QC200
Features ............................................................................................ 3-23
Features list ............................................................................ 3-23
Probing Features ............................................................................... 3-23
Probing Technique .................................................................. 3-24
To select optical edge/ crosshair probe ................................... 3-24
To toggle between auto edge and manual edge detection ........ 3-25
Backward/forward annotation .................................................. 3-26
To select backward/forward annotation .................................... 3-26
To increase the required number of points (forward annotation) 3-29
Skewing the part ..................................................................... 3-30
To skew a part ......................................................................... 3-30
Datum ..................................................................................... 3-32
To construct a datum ................................................................ 3-32
Measuring Features ........................................................................... 3-37
Measuring points ..................................................................... 3-38
To measure a point .................................................................. 3-38
Measuring lines ....................................................................... 3-39
To measure a line .................................................................... 3-39
Measuring circles .................................................................... 3-41
To measure a circle ................................................................. 3-41
Measuring distances ............................................................... 3-44
To construct a distance between two circles ............................3-44
Measuring angles .................................................................... 3-46
To measure an angle ............................................................... 3-46
Using Measure Magic ........................................................................ 3-50
To measure a circle using measure magic ............................... 3-51
To measure a series of features
using measure magic and auto repeat .......... 3-54
Changing feature types............................................................ 3-59
To change a feature type ......................................................... 3-59
Creating Features .............................................................................. 3-61
To create a point ...................................................................... 3-61
To create a line ........................................................................ 3-63
To create a circle ............................................................... 3-65
To create a distance .......................................................... 3-67
To create an angle ............................................................. 3-69
Contents-3
Table of Contents
Constructing Features .................................................................. 3-73
Point Constructions ...................................................................... 3-78
Line Constructions ....................................................................... 3-79
Circle Constructions ..................................................................... 3-80
Distance Constructions ................................................................ 3-81
Angle Constructions ..................................................................... 3-81
Deleting Features ........................................................................ 3-82
Deleting a Skew........................................................................... 3-86
Tolerancing .................................................................................. 3-90
Point Tolerances .......................................................................... 3-91
Line Tolerances ............................................................................ 3-94
Circle Tolerances ......................................................................... 3-102
Distance Tolerances..................................................................... 3-115
Angle Tolerances ......................................................................... 3-119
To create a skew ............................................................... 3-71
Using the recall soft key ..................................................... 3-74
To construct a distance from a point and circle ................... 3-74
Constructing a skew .......................................................... 3-76
To construct a skew from two circles .................................. 3-76
To delete individual features .............................................. 3-82
To delete all features from the features list .......................... 3-84
To delete a skew ............................................................... 3-86
To delete all features, datums, and skews .......................... 3-88
To perform a true position tolerance on a point ................... 3-91
To perform a bi-directional tolerance on a line .................... 3-94
To perform a perpendicularity tolerance on a line ............... 3-97
To perform a form tolerance on a line ................................. 3-100
To perform a true position tolerance on a circle .................. 3-102
To perform a MMC tolerance on a circle ............................ 3-106
To perform a concentricity tolerance on a circle .................. 3-110
About the runout tolerance ................................................. 3-112
To perform a runout tolerance on a circle ............................ 3-112
To perform a width tolerance on a distance ........................ 3-115
To perform an angle tolerance ........................................... 3-119
Contents-4
Quadra-Chek® QC200
4 Programming ...................................................................... 4-1
Sample Program ......................................................................... 4-2
To create the sample program ........................................... 4-2
Running a program ............................................................ 4-12
To run a program ............................................................... 4-12
Editing Programs ......................................................................... 4-15
To display program steps .................................................. 4-15
Viewing compressed steps ............................................... 4-17
To expand a compressed program step ............................ 4-17
Program properties step ................................................... 4-18
To edit program properties step ......................................... 4-19
System settings step ......................................................... 4-20
To edit the system settings step ......................................... 4-21
To edit a feature measurement step ................................... 4-23
Inserting new steps ............................................................ 4-24
To insert a new step in a program ...................................... 4-24
To delete a program step ................................................... 4-27
Copying programs ....................................................................... 4-28
Deleting programs ....................................................................... 4-31
5 Edge Detectors ................................................................... 5-1
Manual edge detection ...................................................... 5-1
Auto edge detection .......................................................... 5-1
To toggle between auto edge and manual edge detection .. 5-1
Connections ................................................................................. 5-3
Connecting fiber-optic cables ............................................ 5-4
Connecting the screen sensor cable to the comparator ...... 5-4
Connecting the reference cable ......................................... 5-5
Checking the sensor light levels ......................................... 5-6
To check sensor cable light levels ...................................... 5-6
Troubleshooting ........................................................................... 5-8
Light Levels ................................................................................. 5-8
Screen level too high ......................................................... 5-8
Screen level too low .......................................................... 5-8
Reference level too high .................................................... 5-8
Contents-5
Table of Contents
Reference level too low...................................................... 5-8
Edge Detector ............................................................................. 5-9
Calibration ................................................................................... 5-9
Teach ................................................................................ 5-9
To perform a teach calibration ........................................... 5-9
Distance calibration (d. cal) ............................................... 5-12
To perform a distance calibration ....................................... 5-12
Cross calibration (x cal) ..................................................... 5-16
To perform cross calibration .............................................. 5-16
6 Communications ................................................................6-1
Connections ................................................................................. 6-1
To connect to a PC using the RS-232 cable ....................... 6-1
Using HyperTerminal .................................................................... 6-2
To connect to a computer using HyperTerminal .................. 6-2
To send data from the QC200 to HyperTerminal ................. 6-11
Using WinWedge® ...................................................................... 6-12
To connect to a computer using WinWedge® .................... 6-12
To send data to WinWedge®............................................. 6-19
Ascii codes ....................................................................... 6-20
Printer connections............................................................ 6-22
To connect to a parallel printer ........................................... 6-22
To connect to a serial printer .............................................. 6-24
Keyboard Commands .................................................................. 6-27
7 Setup .................................................................................... 7-1
Before You Begin ......................................................................... 7-1
Supervisor password ........................................................ 7-1
To enter the supervisor password ...................................... 7-2
Setup Screens ............................................................................. 7-4
About ................................................................................ 7-4
Display .............................................................................. 7-5
Encoders .......................................................................... 7-7
To calibrate the Q axis ....................................................... 7-11
To check Q axis calibration ................................................ 7-14
Contents-6
Quadra-Chek® QC200
To calibrate a filar axis ....................................................... 7-15
To check filar axis calibration ............................................. 7-18
Hot Keys ........................................................................... 7-19
To assign a hot key function ............................................... 7-20
Print .................................................................................. 7-24
Form characters (form chars) ............................................ 7-29
Ports ................................................................................. 7-29
Measure ............................................................................ 7-34
Sounds ............................................................................. 7-38
Supervisor......................................................................... 7-42
Squareness....................................................................... 7-43
LEC, SLEC, NLEC ........................................................... 7-44
Scale factor ....................................................................... 7-45
Miscellaneous (misc) ......................................................... 7-47
Clock ................................................................................ 7-50
Error Correction ........................................................................... 7-52
Linear error correction (LEC)............................................. 7-55
To setup linear error correction .......................................... 7-57
Segmented linear error correction (SLEC) ........................ 7-61
To setup SLEC .................................................................. 7-63
Non-linear error correction (NLEC) .................................... 7-75
To setup NLEC .................................................................. 7-76
8 Reference ............................................................................ 8-1
Repeatability ................................................................................ 8-3
Best Fit Algorithms ....................................................................... 8-4
LSBF (lines and circles) .................................................... 8-4
ISO (lines and circles)........................................................ 8-4
Inner (circles only) ............................................................. 8-4
Outer (circles only) ............................................................ 8-4
Index
Contents-7
Table of Contents
Contents-8
Chapter 1
Overview
Metronics is the world’s premiere developer of metrology software and digital
readouts for measuring and inspecting 2D and 3D geometric components. The
Quadra-Chek 200® is an advanced digital readout system for 2, 3 and 4 axis
measurement systems.
Use the QC200® to inspect manufactured parts that demand very high levels
of precision and accuracy. Connect the QC200® to optical comparators,
toolmaker’s microscopes, or video measurement systems as part of in-line production activities or final quality inspection.
1-1
Chapter 1 Overview
Save time and increase productivity with the QC200. Enter points using crosshairs
or optical edge detection. Use Measure Magic® to interpret point data and
determine feature geometry automatically. Compensate for imperfect part alignment using the skew function. Define hot keys to perform common tasks at the
press of a button. Automate repetitive inspections using the programming
capability.
The user interface retains many functions and features familiar to users of the
Quadra-Chek 2000® and other Metronics products. In addition, more information is given to the operator via the graphic LCD display. Data is clearly presented on one screen, eliminating the need to page or scroll for information.
The compact ergonomic design allows the QC200 to mount on a wide variety of
equipment. Use the tilt front panel to adjust the display to your viewing requirements. Rubber feet on the bottom prevent slipping when the system is not
permanently bolted to a surface. Bolt holes on the mounting stand match the
pattern on the QC2000 for ease of retrofitting.
Above all, the QC200 simplifies complex inspection tasks. Essentially there are
only three things to measure: points, lines, and circles. Angles and distances are
really just relationships between points, lines, and circles. Points, lines, and circles
are referred to as features while angles and distances are called relationships. Plan
inspections by identifying features on the part.
1-2
Quadra-Chek® QC200
Use the front panel keys to perform standard inspection tasks. Select measurement functions, change operation and display modes, enter numeric data, zero
axes, turn the LCD display on/off, or send data to a printer or computer with the
press of a button. The illustration below shows the location of the various panel
keys.
Soft keys execute measurement-specific functions. Depending on the current
task, various soft key options are displayed on the bottom of the LCD screen.
Press the soft key beneath the displayed option to execute the desired function.
Fast track keys are located above the LCD. By default, the left fast track key is the
same as the enter key and the right is the same as the finish key. Users can save time
by programming the fast track keys to perform common tasks. Most front panel
keys can be programmed in the same way. Since the fast track keys are fairly large,
users can find them by touch without looking at the QC200.
1-3
Chapter 1 Overview
All front panel keys (except fast track keys) provide tactile sensory feedback.
Additionally, supervisors can configure keys to provide audio feedback. The
QC200 is equipped with a speaker and external speaker jack. Adjust speaker
volume to suit the operating environment or plug a headset into the speaker jack.
Transmit measurement data to a computer over the RS-232 port connection, or
to a printer over the parallel or RS-232 port.
1-4
An optional foot switch and remote keypad are available for feature-point and
numeric data entry. Use these devices when the QC200 is mounted out of the
operator’s reach.
Specifications
Quadra-Chek® QC200
Input Voltage Range: 85 VAC to 264 VAC. 1.0 Amp maximum
(Auto switchable)
Fuse: 1.6 Amp 250V Slow Blow 5X20mm
Input Frequency: 43Hz to 63Hz
CAUTION
For continued protection against fire, use replacement fuse with
the specified voltage and current ratings only.
Environmental Conditions
Temperature: 0°C to 45°C (32°F TO 113°F)
non-condensing
Humidity: 90%rh
Altitude: 2000 meters
Installation Category: II
Dimensions
Enclosure (WxHxD): 11.5” X 7.5” X 2.75”
Base (WxHxD): 10” X 2” X 7.8”
Enclosure weight: 3.5 lbs.
Base weight: 7 lbs.
LCD
Size/color: 5.7” black and white
Display digit size: 0.5”
Resolution: 0.000004” or 0.0001mm
ENC tests: EN61326:1998
EMC for electrical equipment for measurement, con
trol and laboratory use
EN61010
Safety requirements for electrical equipment for mea
surement, control and laboratory use
WARNING
Electrical shock risk: do not remove cover or open the enclosure.
There are no user-serviceable parts inside. Contact your
Metronics distributor for service.
1-5
Chapter 1 Overview
1-6
Before You Begin
Chapter 2
Quick-Start Demonstration
Use this chapter to learn the basic operation of the Quadra-Chek 200. The
demonstrations in this chapter help experienced operators start using the QC200
immediately. Less experienced operators may need to read chapter 3: operation to
understand some of the material in this chapter. Perform the indicated steps on
your QC200 while reading this material for best results. Demonstrations in this
chapter show crosshair measurement on an optical comparator. Apply these
concepts to the use of optical edge detection as well.
In this chapter users will learn to:
• Set up the QC200 for measuring
• Skew a part
• Datum a part
• Construct a point
• Measure a line and circle
• Perform a tolerance
Getting Started
See chapter 3: operation for complete operating principles and step-by-step dem-
onstrations.
Illustrations in this chapter show a 2 axis (XY) system with factory default settings.
Read and understand all safety and operating instructions before operating the
QC200. To complete the tasks described in this chapter, users must understand
the inspection process, the measuring device used, and the controls, indicators,
and information presented on the QC200 display.
NOTE
Operators are required to understand part fixturing and probing
techniques that apply to the measuring device connected to the
QC200.
2-1
Chapter 2 Quick-Start Demonstration
Safety Reminders
Location and mountingLocation and mounting
Location and mounting
Location and mountingLocation and mounting
Mount the QC200 on a stable surface. If it falls, serious damage or injury can
result.
Checking connections
Perform routine inspections on all connections to the digital readout system.
Keep connections clean and tight. Locate cables away from moving objects. Do
not create tripping hazards with the power cords and connection cables.
Use shielded cables to connect to the parallel and serial (RS-232) output ports.
Make certain cables are properly terminated and firmly connected on both ends.
CAUTION
Never connect the power cable to the QC200 with the power
switch in the ON position. Optical edge detector cables may be
connected or disconnected without placing the switch in the
OFF position.
Power cord and plug
Make sure the power cord is not located where it can be walked on or create a
tripping hazard. Connect the 3-wire power plug to a 3-wire grounded outlet
only. Do not attempt to adapt or remove the 3rd ground wire to fit the plug in
2-wire electrical outlet. Modifying or overriding these features creates a safety
hazard and should not be permitted.
2-2
Power surge suppressor
Use a high-quality power surge suppressor to limit the amplitude of potentially
damaging power line transients caused by electrical machinery or lightning. The
surge suppressor found on inexpensive power strips is insufficient to protect the
QC200 from damage.
Liquids
Do not spill or splash liquids on the QC200 enclosure.
Configuration & System Setup
Only qualified supervisors and dealer representatives should perform system
configuration and setup. Operators should not attempt to alter the configuration of the QC200.
Applying power
Quadra-Chek® QC200
Move the power switch located on the back of the QC200 to the ON position.
The system initializes and displays the power-up screen.
Power-up screenPower-up screen
Power-up screen
Power-up screenPower-up screen
The power-up screen is displayed each time the QC200 is turned on. Press any
key to display the DRO screen.
The DRO screen shows the current position of the encoders on each axis.
NOTE
Some encoders require the user to move each axis across a
reference mark before the QC200 displays the DRO screen.
Adjusting LCD tilt
Adjust the tilt angle of the QC200 for comfortable viewing. If the tilt angle
cannot be adjusted, loosen the two Allen screws at the base of the enclosure and
tilt the QC200 to the desired angle. Retighten the Allen screws so the enclosure
is held firmly but can be adjusted again without loosening.
2-3
Chapter 2 Quick-Start Demonstration
Adjusting LCD contrast
Adjust the LCD contrast for optimum viewing of the DRO screen. Press the
decimal point key to decrease contrast or the +/- key to increase contrast.
Selecting measurement and display modes
Use the mode selection keys located above the numeric keypad to choose measurement units, datums, and display coordinates. These parameters are user
defined and depend on the application performed.
mm/inch
Use the mm/inch mode selection key to toggle the display units between millimeters and inches. The current unit of measure is displayed in the upper right
corner of the screen.
Datum
2-4
Use the datum mode selection key to toggle between datum 1 and datum 2.
Datum 2 is a temporary datum that is useful for performing incremental measurements. The current datum number is displayed in the upper right corner of
the screen.
Polar/Cartesian
Use the polar/cartesian mode selection key to toggle the display between polar
and cartesian display coordinates. Select the appropriate display coordinates for
your application. See chapter 3: operation for a complete discussion of polar and
cartesian display coordinates.
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