CyberOptics 003 WML-C40 User Manual WaferSense TM AGS User s Guide

CyberOptics Semiconductor WML-C40 WaferSense TM AGS User s Guide

User Manual

CyberOpticsSemiconductorWaferSense™AGS User’s Guide
iiGeneral InformationWaferSense Gapping Wafer and LinkChanges or modifications not expressly approved by CyberOptics Semiconductor, Inc., may void your authority to operate the WaferSense AGS.The radio contained in the WaferSense AGS meets all the applicable FCC requirements for RF Safety. While in operation, the FCC requires users and nearby persons to maintain a minimum separation distance of 20 cm (8 inches) or farther from the WaferSense AGS.The WaferSense Gapping Wafer and Link have been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and receiver.• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.• Consult the dealer or an experienced radio/TV technician for help.This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.This ISM device complies with Canadian ICES-001.Cet appareil ISM est conforme à la norme NMB-001 du Canada. CautionElectrostatic discharge (ESD) can damage the AGS. Handle the AGS in an ESD-safearea. If such an area is not available, wear an antistatic wrist strap or touch a groundedsurface before handling the AGS.
iiiWaferSense Technical SupportTechnical support is available from CyberOptics Semiconductor Monday through Friday, 8:00 A.M. to 5:00 P.M. Pacific Time.WaferSense and GapView are trademarks of CyberOptics Semiconductor, Inc.Third-party brands and names are the property of their respective owners.Copyright © 2006-2007, CyberOptics Semiconductor, Inc. All rights reserved.CyberOptics Semiconductor, Inc.13555 S.W. Millikan WayBeaverton, OR 97005P/N 920-0701-01E-mail: CSsupport@cyberoptics.comPhone: +1 503 495-2200800-366-9131 (US and Canada only)Fax: +1 503 495-2201
ivTable of ContentsGeneral Information ......................................................iiChapter 1Introduction....................................................................................1.1Chapter 2Installing Your AGS....................................................................... 2.1Installing the Software....................................................................2.1Installing the Wireless Link............................................................2.3Checking Communications Between the Link and the Wafer ......2.5Registering Your Gapping Wafer for Calibration Service..............2.6Running the GapView Application ................................................2.7Technical Support ..........................................................................2.9Chapter 3Using Your AGS............................................................................. 3.1Opening and Closing the Clean Box..............................................3.2Using the AGS Gapping Wafer Buttons and Status Lights ...........3.3Performing a Basic Gap Measurement ..........................................3.4Setting the Gap Criteria ..................................................................3.9Applying Offsets to the Gap Readings.........................................3.10Setting the Wafer Display Orientation .........................................3.12Logging Your Readings ...............................................................3.13Logging a Reading..................................................................................3.13Including User-Specified Information in the Log File .....................3.14Changing the Log File............................................................................3.15Displaying Readings from a Log File ..................................................3.15Printing the GapView Window.....................................................3.16Monitoring the Operating Temperature ......................................3.17
Table of ContentsvUsing the Rechargeable Battery...................................................3.18Monitoring the Battery Level................................................................3.18Charging the Battery ..............................................................................3.18Monitoring the Wireless Connection to the Gapping Wafer .......3.19Changing the Pairing Between the Gapping Wafer and Link .....3.20Saving Your Settings.....................................................................3.20Loading Settings from a File.................................................................3.21Chapter 4Maintaining Your AGS .................................................................. 4.1Annual Factory Calibration and Battery Replacement ..................4.2Battery Use and Disposal ...............................................................4.2Field Calibrating Your AGS............................................................4.3Chapter 5Specifications................................................................................. 5.1System Requirements .....................................................................5.1AGS Hardware................................................................................5.1Environmental ..........................................................................................5.1Power..........................................................................................................5.1Range and Accuracy.................................................................................5.1Index.....................................................................Index.1
viList of IllustrationsChapter 2Figure 2.1: The InstallShield Wizard.......................................................2.2Figure 2.2: Found New Hardware Wizard..............................................2.3Figure 2.3: Installing the Wireless Link Device......................................2.4Figure 2.4: Starting the GapView Application ........................................2.7Figure 2.5: Calibration Registration Dialog............................................2.8Figure 2.6: The About GapView Dialog..................................................2.9Figure 2.7: The About your AGS Wafer Dialog ......................................2.9Chapter 3Figure 3.1: Opening the Clean Box.........................................................3.2Figure 3.2: Gap Measurements ...............................................................3.4Figure 3.3: The GapView Application.....................................................3.5Figure 3.4: Aligning the Gapping Wafer.................................................3.6Figure 3.5: Numeric Readouts................................................................3.7Figure 3.6: Graphical Readouts...............................................................3.8Figure 3.7: Set Gap Criteria Dialog.........................................................3.9Figure 3.8: Set Gap Offsets Dialog........................................................ 3.10Figure 3.9: Applying the Gap Offset ..................................................... 3.11Figure 3.10: Wafer Orientation in GapView..........................................3.12Figure 3.11: Logging a Reading ............................................................3.14Figure 3.12: Set Station Information dialog .......................................... 3.15Figure 3.13: Temperature Monitoring Gauge.......................................3.17Figure 3.14: Battery Monitor .................................................................3.18Figure 3.15: Wireless Connection Monitor............................................ 3.19Chapter 4Figure 4.1: Wafer Calibration Status Dialog............................................4.2Figure 4.2: Field Calibrate Button and Last Calibration ........................4.3Figure 4.3: Step 1 of 3 Start Calibration Dialog.......................................4.4Figure 4.4: Step 2 of 3 Place AGS Wafer Dialog......................................4.4Figure 4.5: Step 3 of 3 Finish Calibration Dialog....................................4.5
1.1Chapter 1IntroductionThe CyberOptics Semiconductor WaferSense™ Automatic Gapping System (AGS) measures gaps that are critical to the outcome of semiconductor processes such as thin-film deposition, sputtering, and etch. It uses a capacitive sensing technique (patent pending) that consists of three sensors and responds to the proximity of a conductive electrode, such as a shower head, to return live gap measurements that display on your laptop or PC in numerical and graphical form. The GapView™ software application makes it easy to precisely adjust equipment. The large display and wireless link let you place the computer at a convenient distance from the AGS gapping wafer.AGS consists of the following components:•Gapping wafer. The gapping wafer is designed with a wafer-like form factor, so it can fit in most wafer-handling equipment. The gapping wafer package is also vacuum compatible.•GapView software. The GapView software application monitors the gapping wafer and displays gap measurements and other status information in real time. GapView runs on most personal computers that use the Microsoft Windows operating system.•Wireless link. The GapView software communicates with the gapping wafer by using a Bluetooth wireless link that attaches to a USB port on a personal computer. •Clean box. The clean box lets you store the wafer when not in use.•Battery charger and adapter cable. The battery charger and adapter cable let you recharge the gapping wafer’s battery.•Carrying case. The carrying case makes it easy to take your complete AGS system with you in the plant or on the road.The following chapter gives you instructions for installing your AGS system.
2.1Chapter 2Installing Your AGSThis chapter describes the procedures you need to perform to install your AGS and get it ready for use. For best results, perform the procedures in the order they are presented in this chapter:1. Installing the software2. Installing the wireless link on the USB port3. Checking communications between the link and the gapping wafer4. Registering your gapping wafer5. Running the GapView applicationInstalling the SoftwareTo run the WaferSense AGS software, your computer must have the following: • Windows 2000, Windows XP, or Windows Vista operating system• One free high-power USB 1.1 or USB 2.0 portTo install the WaferSense AGS software:1. Log on using an account with Administrator privileges.CautionDropping the gapping wafer or hitting it against a hard object can bend, break, or chip thehousing; damage the internal components; or knock the gapping wafer out of calibration.While it is not as fragile as an actual silicon wafer, handle the gapping wafer with care, asyou would any precision instrument. If the gapping wafer is damaged or in need ofcalibration, see Chapter 4, “Maintaining Your AGS.”
Chapter 2. Installing Your AGS2.22. Insert the WaferSense AGS Installation Disk into the CD drive.The InstallShield Wizard starts automatically, as shown in Figure 2.1. If the wizard doesn’t start automatically, use Windows Explorer to view the contents of the CD and double-click the setup.exe program. Figure 2.1: The InstallShield Wizard3. Follow the instructions provided by the wizard to install the software.4. After you complete the instructions for all of the wizard screens, click Finish. If Windows notifies you that the drivers have not passed Windows logo testing, just click Continue Anyway to complete the installation.By default, the Setup program installs the GapView application in a new program group called WaferSense AGS. Setup also installs an online copy of this user’s guide, which is available from the GapView Help menu and in the WaferSense AGS program group in the Windows Start menu.
Chapter 2. Installing Your AGS2.3Installing the Wireless LinkTo install the wireless link:1. Turn on your computer.2. Locate an unused, high-power USB port on your computer. The AGS wireless link module requires a high-power USB port, such as the built-in ports on your computer and ports on USB hubs that have power cords. Unpowered USB hubs won’t work.3. The USB cable provided with your AGS has a different plug on each end. Locate the end with the plug that matches the USB port on your computer and plug the cable into the port.4. Plug the other end of the cable into the link module. The Windows operating system recognizes the new link module hardware and displays the Found New Hardware Wizard, as shown in Figure 2.2. If the wizard your system displays doesn’t offer to check with Windows Update, skip to step 6. Figure 2.2: Found New Hardware Wizard5. Choose No, not this time and click Next.
Chapter 2. Installing Your AGS2.4The wizard offers to help you install software for the WaferSense link, as shown in Figure 2.3. Figure 2.3: Installing the Wireless Link Device6. Choose Install the software automatically and click Next.If you already installed the WaferSense AGS software (see “Installing the Software,” on page 2.1), Windows will automatically find the drivers. If not, the drivers are located in the Utilities folder on the installation CD-ROM.7. After you complete the instructions for all of the wizard screens, click Finish.The Power light on the module turns on indicating that the module is getting power from the USB port. Ignore the Pair Status and Connection Status lights for now.
Chapter 2. Installing Your AGS2.5Checking Communications Between the Link and the WaferTo complete the installation, verify that the gapping wafer and link can communicate as follows:1. The gapping wafer operates from an internal rechargeable battery. Before using the gapping wafer for the first time, charge it for two hours. For information on checking the charge on the battery and the procedure for recharging, see “Using the Rechargeable Battery,” on page 3.18.2. Unplug the battery charger, open the clean box (see “Opening and Closing the Clean Box,” on page 3.2), and remove the wafer from the box.3. Press the ON / OFF button to turn on the gapping wafer.The Power light on the gapping wafer turns on.4. Verify that the Pair Status lights on both the gapping wafer and link module are on. If either light is not on, your gapping wafer and link might not be paired with each other. To reset the pairing, see “Changing the Pairing Between the Gapping Wafer and Link,” on page 3.20. 5. Immediately after turning on the gapping wafer, the Connection Status lights on the gapping wafer and link will blink slowly. After a few seconds the gapping wafer and link will connect and both lights will be on and no longer blinking. If the lights continue to blink, see “Monitoring the Wireless Connection to the Gapping Wafer,” on page 3.19.6. After starting the GapView application (see “Running the GapView Application,” on page 2.7), you can verify the connection to the gapping wafer by comparing the serial number printed on the gapping wafer to the serial number shown in the About GapView dialog, which is available in the GapView application by choosing the Help > About menu item.That completes the installation of your AGS.
Chapter 2. Installing Your AGS2.6Registering Your Gapping Wafer for Calibration ServiceTo maintain optimum performance, every twelve months you should have your gapping wafer calibrated and the battery replaced. These services can be performed only at the factory.To help you keep track of the next service date so you can schedule this service when it is convenient, register your WaferSense AGS gapping wafer with the factory. When you start the GapView application (see “Running the GapView Application,” on page 2.7), it prompts you to register your gapping wafer for calibration. You can also register your gapping wafer in any of the following ways:• On the Internet: http://www.cyberopticssemi.com/ws_register.html• By phone: 800-366-9131 (US and Canada only)• By faxing the WaferSense AGS Calibration Registration to: +1 503 495-2201• By sending an e-mail message containing the information specified on the WaferSense AGS Calibration Registration to: register@cyberoptics.com.
Chapter 2. Installing Your AGS2.7Running the GapView ApplicationTo start the GapView application:1. From the Windows Start > All Programs menu, choose WaferSense AGS > GapView.The GapView application starts, as shown in Figure 2.4. Initializing communications between the gaping wafer and GapView usually takes less than one second. For information on using GapView, see “Chapter 3, Using Your AGS.” If you haven’t registered your gapping wafer, GapView also displays the Calibration Registration dialog. To complete the registration, proceed to the next step.Figure 2.4: Starting the GapView Application
Chapter 2. Installing Your AGS2.82. If GapView displays the WaferSense AGS Calibration Registration dialog, as shown in Figure 2.5, you haven’t registered your gapping wafer. Follow the instructions in the dialog to complete the registration. Figure 2.5: Calibration Registration Dialog
Chapter 2. Installing Your AGS2.9Technical SupportCyberOptics Semiconductor offers free technical support to customers. If the AGS hardware or the GapView software appear to be malfunctioning, please contact us, and we’ll be happy to assist you.When you contact us, please make sure that you have the following information available:• A detailed description of the problem you are having, including the exact text of any error messages and a list of steps to reproduce the problem.• Information about your computer, including manufacturer, CPU type, version of Windows, and memory size.• The version of the GapView application. The software version is available in the GapView application by choosing the Help > About GapView menu item.Figure 2.6: The About GapView Dialog• The serial number of your gapping wafer. The serial number of the gapping wafer is printed on a label on the side of the gapping wafer. The serial number is also available in the GapView application by choosing the Help > About your AGS Wafer menu item.Figure 2.7: The About your AGS Wafer DialogTechnical support is available Monday through Friday, 8:00 A.M. to 5:00 P.M. Pacific Time.• Voice: +1 503 495-2200
Chapter 2. Installing Your AGS2.10• Toll free: 800-366-9131 (US and Canada only)• Fax: +1 503 495-2201• E-mail: CSsupport@cyberoptics.com• Internet: www.CyberopticsSemi.com
3.1Chapter 3Using Your AGSThis chapter gives you instructions for performing the following tasks with the AGS:• Opening and closing the clean box• Using the AGS gapping wafer buttons and indicators• Performing a basic gap measurement• Setting the gap criteria for measurements• Applying offsets to the gap measurements• Setting the wafer display orientation• Logging your readings• Printing the GapView window• Monitoring the operating temperature• Using the rechargeable battery• Monitoring the connection between the gapping wafer and link module• Changing the pairing between the gapping wafer and link module.• Saving your settings
Chapter 3. Using Your AGS3.2Opening and Closing the Clean BoxThe gapping wafer comes in a plastic clean box that is used for the storing wafer when not in use and for charging the rechargeable battery in the wafer (see “Using the Rechargeable Battery,” on page 3.18). To open the case:1. Place your thumbs in the raised circles on the top of the case (see Figure 3.1).Figure 3.1: Opening the Clean Box2. Using your fingertips under the tabs, lift up on the lid of the clean box while you press down with your thumbs, as shown in Figure 3.1.To close the clean box:1. Lower the lid.2. Place both thumbs on the raised circles on the top of the case (see Figure 3.1) and press down until the case snaps shut.Press your thumbs in the circlesPull up on the tabs with your fingertips
Chapter 3. Using Your AGS3.3Using the AGS Gapping Wafer Buttons and Status LightsAGS gapping wafers have two buttons:•ON / OFF. Turns the gapping wafer on and off.•PAIR. Changes the pairing between a gapping wafer and a link (see “Changing the Pairing Between the Gapping Wafer and Link,” on page 3.20).AGS gapping wafers also have the following status lights:•Power. On while the gapping wafer is turned on.•Charging. On when the gapping wafer is being charged.•Charging Done. On when the battery has reached at least 90% of full charge.•Pair Status. On when the gapping wafer is paired with a link (see “Changing the Pairing Between the Gapping Wafer and Link,” on page 3.20). •Connection Status. On when the gapping wafer has established communication with the link. Blinks slowly while the gapping wafer is trying to establish a connection with the link.
Chapter 3. Using Your AGS3.4Performing a Basic Gap MeasurementThe AGS gapping wafer uses three sensors that respond to the proximity of a conductive surface, such as a shower head. Using these sensors, AGS measures the gap, the distance between the bottom of the gapping wafer and the surface of the equipment above the gapping wafer, at three points (see Figure 3.2). You can use these three gap measurements to adjust the equipment so that the gapping wafer and the shower head or other surface are parallel, to within your specified tolerance. Figure 3.2: Gap MeasurementsGapView shows these gap measurements using two types of readouts (see Figure 3.3):• Graphical readouts • Numeric readouts 123Shower headGapping Wafer
Chapter 3. Using Your AGS3.5GapView updates the readings about once per second, so you see any changes in real time. Figure 3.3: The GapView ApplicationTo perform a basic gap measurement:1. Place the gapping wafer on the equipment you want to check (for instructions on removing the wafer from the clean box, see “Opening and Closing the Clean Box,” on page 3.2). Align the gapping wafer so it matches the GapView display by rotating the gapping wafer until the numbers on the gapping wafer pads are aligned as shown in Figure 3.4 on page 3.6.Numeric Readouts Graphical ReadoutsNumeric Readouts Graphical Readouts
Chapter 3. Using Your AGS3.6Figure 3.4: Aligning the Gapping WaferThe gapping wafer also has a notch on one side. When you have the gapping wafer aligned as described above, the notch will be in the 10 o’clock position as you face the gapping wafer.You can change the orientation of the gapping wafer in the GapView display. For example, if you have equipment where the wafer must be oriented with the notch in the 6 o’clock position, you could set GapView to display the wafer in that position (see “Setting the Wafer Display Orientation,” on page 3.12). Notch231231
Chapter 3. Using Your AGS3.72. Make sure the computer running the GapView application is within the range of the gapping wafer, about 30 ft (10 m).3. The numeric readouts and graphic readouts indicate the three gap measurements:•The numeric readouts (see Figure 3.5) indicate the gap measurements, to 0.0001 inch or 0.001 mm, in real time. Readings outside the working range of the gapping wafer are displayed in gray rather than black. GapView also displays the current settings for the target gap tolerances (see “Setting the Gap Criteria” on page 3.9.) and offsets (see “Applying Offsets to the Gap Readings,” on page 3.10). You can change units (mm or inch) when you set gap criteria or offsets. Figure 3.5: Numeric ReadoutsThe numeric readouts don’t change size if you change the size of the GapView window.For information on the accuracy of the readings, see “Range and Accuracy,” on page 5.1.NumericreadoutsTolerancesOffsets
Chapter 3. Using Your AGS3.8• The graphical readouts (see Figure 3.6) show the gap measurements in real time. Each circle (1, 2, and 3) shows a ruler, marked with the target gap distance in the middle of the ruler. The green band in the middle of the ruler corresponds to the tolerance for the gap measurement. You can set the target gap distance and tolerance for the three gap measurements (see “Setting the Gap Criteria,” on page 3.9).An arrowhead next to each ruler points to the current gap measurement. The color of the arrowhead indicates whether the current gap measurement is within tolerance (green), too small (blue), or too big (red). Figure 3.6: Graphical ReadoutsYou can make the graphical display larger or smaller by changing the size of the GapView window. Other controls in the window do not change size.Target gapRed arrowhead means gap is too big.Green arrowhead means gap is within tolerance.TolerancebandBlue arrowhead means gap is too small.
Chapter 3. Using Your AGS3.9Setting the Gap CriteriaYou can set the target gap distance and the tolerance for the gap measurement, which are indicated in the numeric and graphical displays (see Figure 3.5 on page 3.7 and Figure 3.6 on page 3.8). You can set individual values for each of the three gaps, or you can specify one target and tolerance value for all three measurements. You can also specify whether you want GapView to use units of inches or millimeters for gap measurements.To specify the gap criteria:1. Choose the menu item Settings > Set Gap Criteria.The Set Gap Criteria dialog is displayed, as shown in Figure 3.7.Figure 3.7: Set Gap Criteria Dialog2. In the Gap Units section, choose the units of measurement, inches or millimeters. This selection affects all values in the dialog and in the main GapView window.3. To specify the same target gap distance and tolerance for all three gap measurements, check the box for All three gaps the same. To specify the target gap distance and tolerance separately for each of the three measurements, uncheck the box. When you check the box, the dialog changes to display only one set of gap criteria.4. For the displayed gaps (All gaps or Gap 1, Gap 2, and Gap 3), fill in the target gap distance and the tolerance.5. Click OK.
Chapter 3. Using Your AGS3.10Applying Offsets to the Gap ReadingsBy default, GapView displays the actual measurements from the gapping wafer’s sensors. If you use other instruments to measure or set gaps, the measurements of those instruments might not agree with those of the AGS because of differences in technology or calibration. If you want the AGS readings to agree, you can use the offsets feature of GapView to add an adjustment to the displayed measurements. You do this by having the AGS measure the gap and then telling GapView what you want the displayed readings to be. GapView calculates the difference between the actual AGS measurements and your specified values and applies these offsets to the displayed readings.To apply an offset to the gap readings displayed in GapView:1. Choose the menu item Settings > Set Gap Offsets.The Set Gap Offsets dialog is displayed, as shown in Figure 3.7. The current gap readings are shown in the Reading box for each gap. Figure 3.8: Set Gap Offsets Dialog2. In the Gap Units section, choose the units of measurement, inches or millimeters. This selection affects all values in the dialog and in the main GapView window.3. In the Adjust to box for each gap, fill in the value you want GapView to display for the current gap being measured. GapView calculates the difference between the adjusted setting and the current reading and displays this offset.4. After setting all gap offsets, click OK.
Chapter 3. Using Your AGS3.115. In the GapView main window, in the Gap reading offset controls, choose Offset by to apply the offsets. Figure 3.9: Applying the Gap OffsetTo stop GapView from applying the gap offsets, in the Gap reading offset controls, choose None.Choose Offset by to apply the offsets
Chapter 3. Using Your AGS3.12Setting the Wafer Display OrientationChecking and adjusting equipment is easier if you can place the gapping wafer in the equipment in the same orientation as it is shown in the GapView display. By default, the wafer is displayed in GapView with the notch in the 10 0’clock position, as shown on the left in Figure 3.10. Figure 3.10: Wafer Orientation in GapViewIf you have a piece of equipment that requires the wafer to be in a different orientation, you can tell GapView to rotate the displayed wafer to any of six positions: 2, 4, 6, 8, 10, or 12 o’clock. For example, the wafer display on the right in Figure 3.10 is shown with the notch at the 6 o’clock position. The sensor pads have also rotated so that pad 1 is now at the bottom. To change the orientation of the wafer in the GapView display:• Choose the desired orientation from the menu item Settings > Set Display Orientation. > Notch at X o’clock. Notch231231Notch
Chapter 3. Using Your AGS3.13Logging Your ReadingsGapView can keep a record of your activities as you use the gapping wafer to check the gap of various pieces of equipment. GapView keeps the record in a log file. You can specify the log file path (see “Changing the Log File,” on page 3.15). The log file contains the following information for each entry:•Date and Time. The date and time of the log file entry.•Gap units. Measurement units for gap measurements: inches or millimeters (see “Setting the Gap Criteria,” on page 3.9).•Gap and In Range. Measurements for Gap 1, Gap 2, and Gap 3. Following the three measurements, the next three entries indicate whether the corresponding gap measurements were within tolerance (“good”), too big (“too high”), or too small (“too low”).•Target and Tolerance. The user-specified target values for each gap, followed by the user-specified tolerance for each gap measurement (see “Setting the Gap Criteria,” on page 3.9).•Offsets. Whether or not to apply the user-specified offsets when displaying gap measurements followed by the three offset values (see “Applying Offsets to the Gap Readings,” on page 3.10).•Temperature. The current operating temperature of the gapping wafer in °C (see “Monitoring the Operating Temperature,” on page 3.17).•Battery. The percentage of time remaining before the battery must be recharged (see “Using the Rechargeable Battery,” on page 3.18).•Serial Number. The serial number of the gapping wafer.•Operator, Tool, Station, and Comment. Text fields you can use to record your own information with each log entry (see “Including User-Specified Information in the Log File,” on page 3.14). The remainder of this section tells you how to:• Log a reading• Include information in a log entry for operator, tool, station, and comment• Specify a different location or file name for the log file• Display a past reading from a log fileLogging a ReadingGapView posts entries to the log file on your command.To post an entry to the log file:• In the main GapView window, click Log a Reading (see Figure 3.11 on page 3.14).
Chapter 3. Using Your AGS3.14GapView immediately writes a log entry each time you click the button.Figure 3.11: Logging a ReadingIncluding User-Specified Information in the Log FileOperator, Tool, Station, and Comment are text fields you can use to record your own information with each log entry. You can fill in any text information you want in these fields.To include user-specified information for logging:1. Choose the Settings > Set Station Information menu item.Log a Reading button
Chapter 3. Using Your AGS3.15The Set Station Information dialog is displayed, as shown in Figure 3.12. Figure 3.12: Set Station Information dialog2. Type your text into the Operator, Tool, Station, and Comment text fields.3. You can leave the Set Station Information dialog open while using GapView. Doing so makes it easy to change the Comment or other fields each time you log a reading, or as needed. If you want to close the dialog, click OK.You can change or delete this information at any time for future log entries. To quickly clear all of the fields, click Clear All.Changing the Log FileBy default, GapView writes log entries to the file My Documents\AGS Files\AGS Readings.csv. If you prefer, you can specify a different log file.To change the log file: 1. Choose the File > Select Log File menu item.2. In the AGS Log File dialog, specify the folder and file name for the log file, and click Save.Displaying Readings from a Log FileLog files are saved in a comma-separated-values (CSV) text format. The file is read-only to avoid accidental data corruption. Files in CSV text format are easy to import into spreadsheet and word processing programs.
Chapter 3. Using Your AGS3.16Printing the GapView WindowYou can print an image of the GapView window to have a graphical record of the session. To print an image of the GapView window:1. Choose File > Print.2. In the Print dialog, click OK.You can also select a printer other than the default and change the printer setup, or see a preview of what GapView will print:• To select a different printer, change the paper selection or print orientation, or set printer properties, choose the File > Print Setup menu item. • To see a preview of what GapView will print, choose the File > Print Preview menu item.
Chapter 3. Using Your AGS3.17Monitoring the Operating TemperatureThe operating range for the gapping wafer to achieve the specified accuracy for gap readings is 20 °C - 80 °C. The Temperature monitor in the AGS wafer status area of the GapView window (see Figure 3.13) shows the current operating temperature of the gapping wafer with a numeric readout and a bar graphic. Figure 3.13: Temperature Monitoring GaugeThe thermometer indicates the upper and lower limits of the operating temperature range. The bar changes color as an additional indication of where the current temperature is relative to the accurate operating range:•Blue. Less than 20 °C; the gapping wafer is operating below the range where it produces accurate readings.•Green. 20 °C to 80 °C; the gapping wafer is operating in its normal temperature range, where it produces readings meeting the specified accuracy.•Orange. Greater than 80 °C to 85 °C; the gapping wafer is operating above the range where it produces the most accurate readings, but not so hot that the gapping wafer will be damaged.•Red. Greater than 85 °C; the gapping wafer is operating at a temperature so high that it might be damaged.High>80-85 °C Too High>85 °CLow< 20 °C OK20-80 °C
Chapter 3. Using Your AGS3.18Using the Rechargeable BatteryThe gapping wafer operates from an internal rechargeable battery. From a full charge, the battery provides about 4 hours of continuous use. Before using your gapping wafer for the first time, charge it for two hours.The battery can be recharged about 500 times before the charge life starts to degrade significantly. The battery is not user replaceable. For information on replacing the battery, see “Annual Factory Calibration and Battery Replacement,” on page 4.2.Monitoring the Battery LevelGapView receives frequent updates from the gapping wafer on the state of the gapping wafer’s battery. The Battery indicator in the AGS wafer status area of the GapView window shows the approximate percentage of operating time remaining before you must charge the battery. Figure 3.14: Battery MonitorCharging the BatteryYou can charge the gapping wafer while it is in the clean box or outside the clean box. To charge the gapping wafer’s battery:1. Use only the battery charger supplied with your gapping wafer. Using a different battery charger might damage your gapping wafer or create a safety hazard.2. Plug the charger adapter cable into the socket labeled CHARGER in the gapping wafer.3. If you want to place the gapping wafer into the clean box, leave the lid open or close it loosely. The adapter cable or clean box can be damaged if you close the lid tightly while charging the gapping wafer. (For instructions on how to open and close the clean box, see “Opening and Closing the Clean Box,” on page 3.2.)4. Plug the battery charger into a 100 VAC or 240 VAC supply, and plug the other end into the charger adapter cable.The Charging light is on while the gapping wafer is charging.
Chapter 3. Using Your AGS3.195. Charge the gapping wafer until the Charging Done light turns on or until you need to use the gapping wafer (you don’t need to wait until the gapping wafer is fully charged). Before using the gapping wafer, remove the charger adapter cable.Fully charging the battery takes about two hours. Charging for one hour charges the battery to about 80% of its capacity. You can leave the gapping wafer plugged in when not in use; the battery won’t overcharge. Monitoring the Wireless Connection to the Gapping WaferThe GapView application communicates with the gapping wafer by using a Bluetooth wireless link. The wireless link has a range of about 30 ft (10 m). The Connection indicator in the AGS wafer status area of the GapView window shows the quality of the wireless connection between the gapping wafer and the link module. The connection quality is indicated by the color of the bar and the wording below the bar (see Figure 3.15):•Green - Connected. The connection between the link and gapping wafer is good. With a good connection, the gapping wafer is sending readings to the link module at the maximum rate (about one reading per second). •Yellow - Poor connection. There is some interference or other problem with the signal that is preventing the link and gapping wafer from communicating at their maximum rate. When the indicator is yellow, the readings are still accurate but aren’t being updated as frequently. •Red - No connection. Indicates that there is no connection between the gapping wafer and link module. The values in the display do not update when the indicator is red. Figure 3.15: Wireless Connection MonitorThe Bluetooth wireless link technology used in the AGS is a low-power technology that operates in the 2.4 GHz radio frequency band. This unlicensed band is also used by many other
Chapter 3. Using Your AGS3.20types of devices, such as cordless phones and microwave ovens. Another 2.4 GHz device operating in close proximity could interfere with the AGS system. When this happens, separating the devices by at least 6 ft (2 m) usually solves the problem.Other factors can also affect the wireless link, such as the distance between the gapping wafer and link and obstacles between the gapping wafer and link that block the signal. If GapView indicates that the connection isn’t good, try moving the link module a few feet closer to the gapping wafer.Changing the Pairing Between the Gapping Wafer and LinkEach gapping wafer is paired with a specific link module at the factory and will operate only with its paired link module. You can change this pairing so that you can use your gapping wafer with a different AGS link module, or vice versa. Link modules for different CyberOptics WaferSense products, such as Auto Leveling Sensors (ALS), are not interchangeable.To pair a gapping wafer and link module:1. If you are changing the pairing of a gapping wafer that is already paired with a link module, first unplug the currently paired link module. You can’t pair a gapping wafer with a new link module while the currently paired link module is powered on.2. Make sure the Power lights are illuminated on both the gapping wafer and link module you want to pair.3. On the gapping wafer, press and hold the PAIR button until the Pair Status and Connection Status lights start to blink rapidly (about four times per second).4. On the link module, press and hold the PAIR button until the Pair Status and Connection Status lights start to blink rapidly (about four times per second).The Pair Status and Connection Status lights will continue to blink until the gapping wafer and link have established a new pairing, after which the lights will be on and no longer blinking.Saving Your SettingsEach time you exit the GapView application, it saves your current settings for the log file, target gaps and tolerances, gap offsets, wafer display orientation, and gap units in the Windows registry. The next time you start GapView, it restores those saved settings. You can also tell GapView to save your settings to a file you specify, and you can have GapView read those settings back at any time. This lets you have several different configurations for GapView and be able to switch between them easily, without having to reenter the settings.
Chapter 3. Using Your AGS3.21To save your settings in a file you specify:1. Choose the File > Save Settings As menu item.2. In the AGS Settings File dialog, specify the directory and file name and click Save.GapView saves your settings, and the file you specified becomes the current settings file.To save your settings in the current settings file:• Choose the File > Save Settings menu item.Each time you start GapView, the application automatically reads in the most recent settings from the Windows registry, including the last settings file you specified, if any. Loading Settings from a FileTo load settings from a file:1. Choose the File > Open Settings menu item.2. In the AGS Settings File dialog, specify the directory and file name and click Open.GapView reads the settings from the specified file and applies the settings. These settings are also written to the Windows registry and will be loaded the next time you start the GapView application.
4.1Chapter 4Maintaining Your AGSPeriodic calibration and battery replacement is the only regular maintenance your AGS requires:•Annual Calibration and Battery Replacement. Once a year, you should have your gapping wafer calibrated and the internal rechargeable battery replaced by returning the gapping wafer to the CyberOptics Semiconductor factory.•Field Calibration. In addition to the annual factory calibration, you should calibrate your wafer using the field calibration procedure described in this chapter. Field calibration is not a substitute for the annual factory calibration.•Cleaning the Gapping Wafer. If cleaning is required, wipe the outside of the gapping wafer with IPA (isopropyl alcohol). If the gapping wafer is used in a clean environment, follow proper procedures for cleaning devices for this environment. WarningThe edges of the AGS gapping wafer are thin. It may be possible to sustain an injury fromthese edges if the gapping wafer is not handled with proper care.WarningProtection afforded by compliance to EN61010-1 (2001) may be impaired if theequipment is not used as specified.WarningDo not immerse the gapping wafer or the link module in liquid. Do not spill liquids onthe gapping wafer or on the link module.
Chapter 4. Maintaining Your AGS4.2Annual Factory Calibration and Battery ReplacementEvery twelve months, you should return your gapping wafer to the CyberOptics Semiconductor factory, where we will calibrate the gapping wafer and replace the internal rechargeable battery. You can find the date when the gapping wafer was last calibrated at the factory by choosing the Help > About your AGS Wafer menu item in the GapView application. The date when the gapping wafer is due for its next calibration is shown on a label affixed on the side of the raised center part of the gapping wafer.When the date for calibration approaches, the GapView application will occasionally notify you by displaying the Wafer Calibration Status dialog, as shown in Figure 4.1. Figure 4.1: Wafer Calibration Status DialogIf you drop the gapping wafer or suspect that it is no longer in calibration, contact CyberOptics Semiconductor technical support (see “Technical Support,” on page 2.9).Battery Use and DisposalYour AGS gapping wafer contains a lithium-polymer battery. To avoid damage to the gapping wafer, use the supplied charger only. Do not charge the gapping wafer at temperatures outside the specified range (0 °C to 45 °C). Do not incinerate or dispose of the gapping wafer into fire. Do not immerse the gapping wafer when cleaning or spill liquids on the gapping wafer.For proper battery disposal, please return the gapping wafer to CyberOptics Semiconductor, Inc.:CyberOptics Semiconductor, Inc.13555 S.W. Millikan WayBeaverton, OR 97005or contact customer support (see “Technical Support,” on page 2.9).
Chapter 4. Maintaining Your AGS4.3Field Calibrating Your AGSOver time, AGS gap measurements can drift. In addition to the annual factory calibration, you might want to calibrate your AGS system periodically. GapView includes a field calibration feature to make it easy to calibrate the AGS system. For this calibration, you’ll also need a calibration fixture, which is available from CyberOptics. For information on the CyberOptics fixture, contact Technical Support.To field calibrate your AGS:1. In GapView, the last time the AGS was field calibrated is shown to the right of the Field Calibrate button (see Figure 4.2). Click Field Calibrate to start the calibration wizard. Figure 4.2: Field Calibrate Button and Last CalibrationDate of last field calibrationField Calibrate button
Chapter 4. Maintaining Your AGS4.4The Calibration wizard is displayed showing the Step 1 of 3 Start Calibration dialog, as shown in Figure 4.3.Figure 4.3: Step 1 of 3 Start Calibration DialogThis dialog displays the current calibration values. Clicking Reset to Factory Defaults the last factory calibration setting.2. Click Next to continue with the calibration procedure.The wizard now displays the Step 2 of 3 Place AGS Wafer dialog, as shown in Figure 4.4. Figure 4.4: Step 2 of 3 Place AGS Wafer Dialog
Chapter 4. Maintaining Your AGS4.53. Follow the instructions in Step 2 of the wizard to place the gapping wafer in the calibration fixture. In the Gap box, enter the gap distance for the fixture, which is shown on the fixture.4. When you have completed Step 2, click Next.After a few seconds, the wizard displays the Step 3 of 3 Finish Calibration dialog, as shown in Figure 4.5. Figure 4.5: Step 3 of 3 Finish Calibration DialogThis dialog shows the current calibration values (the values from the last factory or field calibration) and the new values that were just determined in this calibration. At this point, the new values have not been saved to the gapping wafer.5. Click Save to save the new calibration values.6. That completes the field calibration.
5.1Chapter 5SpecificationsSystem RequirementsTo run the WaferSense AGS software and link, your computer must have:• Windows 2000, Windows XP, or Windows Vista operating system• One free high-power USB 1.1 or USB 2.0 portAGS HardwareEnvironmentalOperating pressure range: 760 to less than 10-6 Torr.Storage temperature range: -20 °C to 45 °C.Charging temperature range: 0 °C to 45 °C.Operating temperature range: 20 °C to 80 °C.PowerBattery charger requires 100 - 240 VAC at 47 - 63 Hz input.Battery usage on a full charge: approximately 4 hours.Typical battery recharge cycles: approximately 500.Range and AccuracyRange: 0.35" to 0.79" (9 mm to 20 mm).Parallelism accuracy: ±0.025 mm (0.001") with gap of 15 mm (0.6").Gap accuracy: ±0.25 mm (0.01") with gap of 15 mm (0.6").
Index.1IndexAAbout GapView dialog 2.9accuracy of measurements 4.2, 4.3, 5.1adjusting readings 3.10AGSinstalling 2.1see also gapping waferspecifications 5.1system components 1.1Bbattery 3.18care and disposal 4.2recharging 3.18replacement 4.1, 4.2specifications 5.1Bluetooth wireless link 1.1, 3.19buttons on gapping wafer 3.3Ccalibrationdate of last 2.9, 4.3factory 4.2field 4.3fixture 4.3case, see clean boxCharging Done status light 3.3Charging status light 3.3clean boxopening and closing 3.2recharging the battery 3.18cleaning the gapping wafer 4.1Comment, including in log file 3.14components, AGS 1.1Connection Status light 3.3Ddisplaying log entries 3.15Eelectrostatic discharge iiESD iiFfactory calibration 4.2FCC standards iifield calibration 4.3fixture, calibration 4.3Ggap measurement 3.4gap offsets 3.10gap readouts 3.7gapping waferbattery replacement 4.1buttons 3.3, 3.20calibration 4.2changing pairing with link module 3.20cleaning 4.1field calibration 4.3maintenance 4.1monitoring the connection 3.19recharging the battery 3.18registering 2.6serial number 2.9status lights 2.5, 3.3, 3.20
IndexIndex.2GapViewmain window 3.5software installation 2.1starting the application 2.7version 2.9Hhardware specifications 5.1Iinch units 3.9, 3.10installationAGS 2.1link module 2.3software 2.1system requirements 2.1Llink modulechanging pairing with gapping wafer 3.20installation 2.3monitoring the connection 3.19PAIR button 3.20status lights 2.4, 2.5, 3.20USB port 2.1Log a Reading button 3.13log file 3.15logging readings 3.13Comment 3.14displaying log entries 3.15log file 3.15Operator 3.14Station 3.14Tool 3.14user-specified information 3.14Mmaintaining the gapping wafer 4.1measurement offsets 3.10measurement range and accuracy 5.1millimeter units 3.9, 3.10monitoring the wireless connection 3.19Nnotch location 3.12Ooffsets 3.10ON / OFF button 2.5, 3.3operating temperaturemonitoring 3.17specifications 5.1Operator, including in log file 3.14orientation of wafer 3.12PPAIR button 3.3, 3.20Pair Status light 3.3pairing of gapping wafer and link module, changing 3.20Power status light 3.3preferences, see settingspressure range 5.1printing 3.16Rradio interference iirange of measurements 5.1reading offsets 3.10rechargeable batteryrecharging 3.18rechargeable battery, see batteryregistering your gapping wafer 2.6rotating the wafer display 3.12
IndexIndex.3Ssaving settings 3.20serial number, gapping wafer 2.9settingsgap criteria 3.9gap offsets 3.10log file 3.15saving 3.20wafer display orientation 3.12software installation 2.1software version 2.9specifications 5.1starting GapView 2.7Station, including in log file 3.14status lightsgapping wafer 2.5, 3.3, 3.20link module 2.4, 2.5, 3.20support 2.9Ttechnical support 2.9temperaturemonitoring 3.17specifications 5.1Tool, including in log file 3.14Uunits, mm or inches 3.9, 3.10USB port 2.1, 2.3Vversion of software 2.9WWindows operating system 2.1wireless link, see link modulewireless technology 3.19

Navigation menu