* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download C/V
History of electric power transmission wikipedia , lookup
Ground loop (electricity) wikipedia , lookup
Current source wikipedia , lookup
Distributed control system wikipedia , lookup
Electrical substation wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Control theory wikipedia , lookup
Resilient control systems wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Power electronics wikipedia , lookup
Schmitt trigger wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Alternating current wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Surge protector wikipedia , lookup
Distribution management system wikipedia , lookup
Buck converter wikipedia , lookup
Voltage regulator wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Control system wikipedia , lookup
Stray voltage wikipedia , lookup
Voltage optimisation wikipedia , lookup
Table of Contents TABLE OF CONTENTS .................................................................................................. I TABLE OF FIGURES....................................................................................................III A - DISCUSSION...............................................................................................................1 a.1 - C/V Profile ..................................................................................................................3 a.2 - Custom Profile.............................................................................................................4 B - MAIN CONFIGURATION.........................................................................................9 b.1 - Setup Dialog..............................................................................................................10 b.1 - Description ................................................................................................................11 b.3 - Controls.....................................................................................................................13 b.4 - Mux Loop Adjust Dialog ..........................................................................................19 b.5 - Description ................................................................................................................19 b.6 - Controls.....................................................................................................................20 b.7 - Custom File Creation Dialog ....................................................................................21 b.8 - Description ................................................................................................................21 b.9 - Controls.....................................................................................................................22 b.10 - Parameter Adjustment Dialog .................................................................................24 b.11 - Discussion ...............................................................................................................25 b.12 - Controls...................................................................................................................25 C. - QUIKLOOK SETUP................................................................................................30 c.1 - Setup Dialog..............................................................................................................31 c.2 - Description ................................................................................................................32 c.3 - Controls .....................................................................................................................34 c.4 - Custom File Creation Dialog.....................................................................................41 c.5 - Description ................................................................................................................41 c.6 - Controls .....................................................................................................................42 D - QUIKLOOK PLOT SETUP.....................................................................................45 d.1 - Setup Dialog..............................................................................................................45 d.2 - Description ................................................................................................................45 I Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. d.3 - Controls.....................................................................................................................46 d.4 - Plot Filters .................................................................................................................47 E - CUSTOM DRIVE PROFILE FILE FORMAT ......................................................57 F - RESULTS AND DATA PRESENTATION .............................................................61 f.1 - QuikLook Data Representation .................................................................................61 f.2 - Archive Regraph........................................................................................................64 f.3 - Data Exporting...........................................................................................................67 f.4 - Export Setup ..............................................................................................................70 f.5 - Export Samples..........................................................................................................70 G - CHANGE AND VERSION RECORD ...................................................................75 II Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Table of Figures Figure a.1 - Measurement Drift Correction. ..................................................................... 2 Figure a.2 - Measurement Profile at at Single Voltage Step. ........................................... 2 Figure a.3 - Tickle Voltage Detail by Voltage Sign. ........................................................ 3 Figure a.1.1 - Standard Bipolar C/V Drive Profile. .......................................................... 4 Figure a.2.1 - C/V Task Custom Drive Profile Input File. The Lines "Preset Volts" and "Preset Pulse Width (ms)" are Valid for the Advanced C/V Task, but Should be Eliminated Here. .................................................................................................... 6 Figure a.2.2 - Sample Custom C/V Task Drive Profile. ................................................... 7 Figure a.2.3 – Family of Custom Drive Profile Waveforms from a Single Source File. . 8 Figure b.1.1 - C/V Task Configuration Dialog - Standard Bipolar Profile. ................... 10 Figure b.1.2 - C/V Task Configuration Dialog - Custom File Profile. ........................... 11 Figure b.4.1 - Configure the Adjustment of the Multiplexer Parameters in a Branch Loop. .................................................................................................................... 19 Figure b.7.1 - Custom Profile Input File Creation Dialog. ............................................. 21 Figure b.7.2 - Standard Windows File Browser Dialog. ................................................ 21 Figure b.10.1 - Branch Loop Parameter Adjustment Configuration Dialog. ................. 24 Figure c.1.1 - QuikLook C/V Task Measurement Configuration Dialog - Standard Bipolar Profile. ..................................................................................................... 31 Figure c.1.2 - QuikLook C/V Task Measurement Configuration Dialog - Custom File Profile. .................................................................................................................. 32 Figure c.4.1 - Custom C/V Profile File Creation Dialog. ............................................... 41 Figure c.4.2 - Standard Windows File Browser Dialog. ................................................. 41 Figure d.1.1 - C/V Task QuikLook Plot Configuration Dialog. ..................................... 45 Figure d.4.1 - QuikLook C/V Response - Capacitance (nF) Filter - Linear Sample. ..... 47 Figure d.4.2 - QuikLook C/V Response - Capacitance (nF) Filter - Ferroelectric Sample. ............................................................................................................................... 48 Figure d.4.3 - QuikLook C/V Response - Normalized Capacitance (µF/cm2) Filter Linear Sample. ..................................................................................................... 49 Figure d.4.4 - QuikLook C/V Response - Normalized Capacitance (µF/cm2) Filter Ferroelectric Sample. ........................................................................................... 50 Figure d.4.5 - Numerical Integration. ............................................................................. 51 Figure d.4.6 - Integration Results. .................................................................................. 52 Figure d.4.7 - QuikLook C/V Response - Charge (µC) Filter - Linear Sample. ............ 53 Figure d.4.8 - QuikLook C/V Response - Charge (µC) Filter - Ferroelectric Sample. .. 54 Figure d.4.9 - QuikLook C/V Response - Polarization (µC/cm2) Filter - Linear Sample. ............................................................................................................................... 55 Figure d.4.10 - QuikLook C/V Response - Polarization (µC/cm2) Filter - Ferroelectric Sample. ................................................................................................................. 56 Figure e.1 - C/V Task Custom Drive Profile Input File. The Lines "Preset Volts" and "Preset Pulse Width (ms)" are Valid for the Advanced C/V Task, but Should be III Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Eliminated Here. .................................................................................................. 58 Figure e.2 - Sample Custom C/V Task Drive Profile. .................................................... 59 Figure e.3 - Two Drive Profiles Created from the same Custom Input File. .................. 60 Figure f.1.1 - C/V QuikLook Measurement Results Dialog - Linear Sample. ............... 61 Figure f.1.2 - Send QuikLook Data to a New or Existing DataSet. ................................ 62 Figure f.1.3 - DataSet Creation Dialog. .......................................................................... 63 Figure f.1.4 - New DataSet Created from C/V QuikLook Execution. ............................ 63 Figure f.2.1 - Access the C/V Data in the DataSet Archive. ........................................... 64 Figure f.2.2 - C/V Configuration Dialog Recalled from the DataSet Archive. .............. 65 Figure f.2.3 - Configure C/V Archive Regraph Plot Titles and Filters. .......................... 66 Figure f.2.4 - C/V Data Recalled from a DataSet Archive. ............................................ 67 Figure f.3.1 - Standard Windows Printer Configuration Dialog. .................................... 68 Figure f.3.2 - Export Configuration Dialog. ................................................................... 69 Figure f.3.3 - Standard Windows File Browser. ............................................................. 70 Figure f.5.1 - C/V Task Text Export File Format - Upper Portion. ................................ 71 Figure f.5.2 - C/V Task Text Export File Format - Lower Portion. ................................ 72 Figure f.5.3 - C/V Task Excel Export Output Format - Upper Portion. ......................... 73 Figure f.5.4 - C/V Task Excel Export Output Format - Lower Portion. ......................... 74 IV Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. a - Discussion The C/V Task has been removed from the Library and QuikLook menu. The Advanced C/V is provided as the only C/V Task. Note that Advanced C/V is identical to the C/V Task except that it provides a wider variety of standard drive profiles. C/V is maintained in the Task directory and loaded by Vision as a legacy Task so that data that have been archived in DataSets may be recalled. The C/V, or Capacitance Vs Voltage, Task (also known as the Small Signal Capacitance or SSAC Task in RT66A and RT6000 test systems) is very similar to the Hysteresis Task in configuration, data representation and the type of data measured. Indeed, in the older test systems, the SSAC measurement is an option under the Hysteresis measurement. Normally a standard bipolar triangular Hysteresis-like drive voltage profile is applied to the sample. At each voltage step along the profile, a small signal capacitance measurement is made and recorded. This differs significantly from the Hysteresis loop. In a Hysteresis measurement, a single measurement is made throughout the loop, with the integrated charge being sampled at each step voltage. For the C/V Task, a distinct capacitance measurement is made at each step voltage. At each step voltage in the profile a complex series of small signal stimuli are applied to the sample as shown in Figure a.2. The first period entered is the Step Delay. This is a fixed 1 ms delay at the step voltage. The Step Delay is followed immediately by the Soak Time. This is a period of simple delay during which not additional stimulus is provided and no measurement is made. The purpose of the Soak delay is to allow currents induced by the application of the step voltage to settle, so that the sample is at a steady state current condition. The duration is under user control. The next period is a sequence of one to thirty small signal pulses to the tickle pulse voltage and of pulse width duration. No measurement is made during this period. The purpose of the series of pulses is to preset the sample so that pulses performed during the measurement do not induce any remanent polarization switching. The next segment of the C/V measurement at a single step voltage applies the pulse tickle voltage continuously for a period equal to the preset and pulse measurement periods. This is equivalent to between two and sixty times the pulse width. Once the additional tickle voltage is applied, measurements are made at regular intervals that agree with the sample period of the actual pulse measurements. This leakage measurement is used to characterize natural drift of the current through the sample with the application of a continuous DC Step Voltage. This drift will be recorded and subtracted from the pulse measurements to eliminate drift noise as shown in Figure a.1 below. 1 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure a.1 - Measurement Drift Correction. Only once all of these signals are applied at the step voltage is the actual measurement made. The target parameter is the response of the sample to a single pulsed application of the tickle voltage at the step voltage. However, since the tickle voltage is small, the response is equally small and is subject to noise from a variety of sources. To provide an accurate sample response, the measurement is made one to thirty times and the accumulated value is averaged to produce the final reported value. Figure a.2 - Measurement Profile at at Single Voltage Step. 2 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure a.3 shows the tickle voltage superimposed on the step. It shows how the direction of the tickle voltage, relative to the direction of the step, is controlled by the sign of the tickle voltage. Figure a.3 - Tickle Voltage Detail by Voltage Sign. It should begin to become apparent that the C/V measurement is a lengthy process. The delay at a single step voltage is given by: 1 ms (Step Delay) + Soak Time + 6 * Pulse Count * Pulse Width The minimum total delay is this value times the number of specified points. The duration may be further lengthened by repeated measurements at any step voltage as the amplification level is adjusted throughout the C/V loop. a.1 - C/V Profile The discussion above details the measurement profile at a single voltage step. The overall C/V measurement profile consists of a series of such steps of number specified by the user. Normally the measurement profile will be an automatically generated Standard Bipolar Triangular waveform familiar to the users of the Hysteresis Task. The waveform 3 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. can be completely specified by providing VMax, the number of points and the Profile Offset. The voltage begins at 0.0, rises to VMax at 1/4 the points, falls to -VMax and then returns to 0.0. The voltage step between each sample point is uniform. With a negative VMax specified the voltage profile inverts, falling to the negative value first before rising to -VMax. The number of points will be an integer multiple of four plus one. The user-specified number of points will be adjusted if necessary to meet this criterion. The profile is normally symmetric in voltage, starting and stopping at zero volts. However a profile offset may be specified that is a DC Bias value that is added to every point in the profile, shifting it up or down in voltage without distorting the shape, resulting in a profile that is asymmetric in voltage. The user must ensure that the Profile offset combined with ±VMax does not exceed the voltage capability of the hardware as it is configured. Figure a.1.1 - Standard Bipolar C/V Drive Profile. a.2 - Custom Profile A second drive profile option exists that allows the user to create an overall stimulus waveform of any custom shape. This is accomplished by individually and independently stipulating every voltage in the profile. The profile, along with the other waveform parameters including number of points, soak time, pulse width, pulse voltage and pulses to average, is entered through a strictly-formatted text input file. The file format is... Line 1: Line 2: Line 3: Line 4: Number of points in the custom drive profile. No limit or criterion is placed on this value. The number of voltage entries in the file must agree with this value. The soak time in milliseconds. Value ranges from 1e-3 to 30,000.0. The number of repetitive C/V pulses to perform and average. Value ranges from 1 to 30. The tickle or pulse voltage to apply during the C/V measurement. This value should be very small. 0.06 volts is default. 4 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. The pulse width of the measurement pulse in milliseconds. Value ranges from 1e-3 to 30,000.0. Line 6 to Points + 5: A sequential list of the voltages to be applied in the profile. Voltages are independent. The allowed range is determined by the hardware to be used. There must be as many lines with valid voltages as there are points specified on line one. Line 5: Figure a.2.1 shows a portion of a valid custom input file for the C/V Task. Note that there are in-line comments. These are permitted provided they follow the value entry in the line and are separated from the value by at least one space. The file must be text-only. It may be created by a text editor such as Notepad.exe. If a Word processor is used, the file must be saved as text only. A word processor formatted file includes binary header information that cannot be read by Vision. The file may also be created in a spreadsheet and output as a text-only file. 5 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure a.2.1 - C/V Task Custom Drive Profile Input File. The Lines "Preset Volts" and "Preset Pulse Width (ms)" are Valid for the Advanced C/V Task, but Should be Eliminated Here. 6 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. The sample custom drive profile set in the file shown above is plotted below. Figure a.2.2 - Sample Custom C/V Task Drive Profile. A custom file profile may be create "Automatically" with the help of a dialog available from both the QuikLook and Test Definition configuration dialogs. The dialog ensures file correctness, but is not practical for large profiles (> 100 points). Dialog details are presented in the configuration discussions. When the custom file input is selected, most profile configuration parameters are disabled in the configuration dialogs. However, the VMax parameter and the Profile Offset remain enabled. This is because a single custom file can be used as a template for a family of profiles that retains the basic profile shape, but translated and/or scaled. Whenever a custom file is read, the voltage of maximum absolute value is read and becomes VMax in the configuration dialog. However, VMax may be changed. When the file is actually used to drive the sample, it is scaled by: VMax / File voltage of maximum absolute value Entering the same file into the C/V Task, but adjusting VMax, therefore, allows the pro7 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. file to be scaled and reused as a different profile. Entering a VMax of the opposite sign of the voltage of maximum absolute value will invert the profile. Likewise, as with the standard bipolar triangular profile, the custom voltages can be translated up or down by entering a non-zero Profile Offset. Profile Offset is a voltage value that is added to every point in the custom profile. A negative value will shift the profile down, while a positive value translates it upwards. The user must take care that at no point in the profile does the combined scaled file value and offset produce a voltage that is greater in magnitude than the capability of the hardware being used. The figure below shows the original profile as well as a profile scaled to -1/3 and shifted upwards by 5.5 Volts. This is accomplished by change VMax to +5.0 and the offset to +5.5. Figure a.2.3 – Family of Custom Drive Profile Waveforms from a Single Source File. 8 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. b - Main Configuration Task Name: Version: Last Update: In QuikLook Menu: Folder: Subfolder: Subsubfolder: Window Name: Change Record: Known Bugs: User Variables Added: C/V 3.1.0 03 April 2002 No None None None C/V QuikLook::C/V QuikLook Setup Go to Change Record None None 9 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. b.1 - Setup Dialog Figure b.1.1 - C/V Task Configuration Dialog - Standard Bipolar Profile. 10 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure b.1.2 - C/V Task Configuration Dialog - Custom File Profile. b.1 - Description This dialog fully configures the C/V Task for inclusion in a Test Definition, for execution within a DataSet. All parameters necessary for complete Task specification are present. The upper left section of the dialog has controls to configure the waveform and the small signal pulse stimulus that forms the C/V measurement. In addition the Task is named and the sample parameters Area and Thickness are specified. Area and Thickness are mostly informational but Area is also used in computing the measured capacitance, so must be 11 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. properly entered. The lower left portion of the dialog provides sample information. These parameters have no effect on the behavior of the Task or the value of the measured data. The external sensor is also enabled in this region. The right half of the dialog deals with the hardware configuration. If external amplifiers and/or multiplexers are to be used, they are configured here. Internal test elements can be switched into the signal path here as well. Finally the amplification level can either be selected or set to automatic. Note that the C/V measurement is a very slow test. Selecting Automatic amplification will dramatically increase the duration of the experiment. Two nearly identical dialogs appear above. The first dialog shows the configuration of a Standard Bipolar Triangular drive voltage stimulus waveform. This is the typical applied stimulus. The waveform is computed from the number of points and the VMax value. Additional parameters configure the small signal stimulus at each step. The second dialog shows the Task configured to perform a custom drive profile read from a file. Most standard configuration controls have been disabled. New controls, not evident in the first dialog, appear to browse to the file that holds the custom configuration, or open a dialog that will allow the creation of a custom profile file. Once the file is created and read, control parameters are updated based on the file input. The VMax and Profile Offset controls remain active, since they can be used to alter the basic custom waveform as described below. Three new controls have been added in Version 3.1.0. y y Custom Amplifier - This radio button has been added to the External Amplifier list. This control allows the user to attach an existing amplifier (not provided by Radiant Technologies) to the experiment. The user must provide RTI the amplifier specifications such as voltage range, gain factor and maximum rise time. RTI will then provide the user with an identifying module that will allow the amplifier to be connected to the HVI. Sensor Impedance - This is added to the suite of sensor controls. This control specifies an integer output impedance of the instrument attached to the Sensor port. The sensor output impedance in series with the Precision input impedance (currently about 4 k-Ω) make a voltage divider that distorts the measured voltage by: Measured = Actual x 4k / (4k + Sensor Impedance). y If the sensor output impedance is large with respect to the 4k input impedance, the distortion will be significant. This control accepts a value that is used to correct this distortion. Start at Last Amp Value. When Auto Amplification is checked, the system will begin to search for the correct amplification level by using the value specified in the Amp Level control, even though the control is disabled. Checking the new control will force the search to start at the amplification level that was established 12 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. in the last measurement. b.3 - Controls Control C/V Task Name Type Text Default C/V-# Points Integer 101 VMax Real 5.0 Soak Delay Real 1.0 Profile Offset Real 0.0 Description 30 characters maximum. Provide an identifier for the C/V Task being configured. The Task will be referred to using this identifier in the DataSet Archive. The name should be descriptive and unique to this instance of the Task. 1 or greater. This is the number of voltage steps that will form the drive profile. It is also the number of measured values that will be reported. For Standard Bipolar profiles, this value must be an integer multiple of four, plus one. A value of 1 may be entered. In that case a single measurement point will be made at VMax. The software will automatically set the number of points to the criterion if the value entered is not an integer multiple of 4 plus one. If the Drive Profile Type is set to "From File", the points control becomes read only. It is adjusted to the number of points read in the file. In the custom file configuration, no criterion is placed on the number of points. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. -10,000.0 to 10,000.0. This is the key parameter in building a standard bipolar drive profile. The drive voltage profile will step from zero volts to this value, back to zero volts, to -VMax and back to zero volts. If this value is negative, the first leg of the profile will be of negative voltage. The VMax control remains enabled if Drive Profile Type is set to "From File". VMax is updated when the file is read to the voltage of maximum absolute value in the profile. However, the value can then be changed to scale the custom profile so that it retains its original shape but achieves different voltage values. In milliseconds. 1e-3 to 30,000. Once the drive profile has stepped to a voltage a fixed 1.0 ms delay occurs. Then a usercontrollable second soak delay of this duration occurs before any small signal stimulus is applied to the sample. The purpose of the delay is to allow any current induced by the voltage step to dampen so that the sample is at a steady state current condition. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. -10,000.0 to 10,000.0. This is a voltage value that can be added to either the standard bipolar or custom waveform profiles to translate the profile up or down. This value is not read from a custom file, but the control remains active if the Drive Profile Type is set to "From File". Care must be taken by the user that the combination of this value and of the drive profile values, whether custom or standard bipolar, do not exceed the 13 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Tickle Pulse Volts Tickle Pulse Width Pulses to Average Run Time Area Thickness Drive Profile Type Adjust Parameters in a Branch Loop File Browse (>>) File Name capabilities of the amplifier under use. -10,000 to 10,000. This is the value of the small signal voltage applied during each stimulus period at each step voltage. The value is normally very small with respect to the step voltage. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. Real 1.0 In milliseconds. 1e-3 to 30,000. This is the duration of a single pulse in the small signal measurement of capacitance. It is also the duration between pulses when multiple pulses are used. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. Integer 25 1-25. This is the number of small signal pulses to be used in making the capacitance measurement at each step voltage. Since the signal applied is very small, the measurement is noise-prone. Increasing this value will reduce the noise in the data. The drawback is that it also increases the duration of the Task execution. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. Real 18.1 s In seconds. Read-Only. This control is updated when any of the controls that affect the experiment duration is updated. It is a prediction of the duration of the Task execution. As a result of repeated measurements if Auto Amplification is selected as well as the accumulation of other small software delays, this estimate will always be low. Real 1e-4 In cm2. This is the surface area of the sample electrode. This value is informational, but is also used in computing measured data. A mis-entered value will result in mis-scaled data. Real 0.3 In µm. This is the thickness of the ferroelectric material in the sample. The value is strictly informational. List Box Standard This control switches between an automatically computed Bipolar Standard Bipolar Triangular drive voltage profile and a custom profile read in from an input file. With "Standard Bipolar" selected, Points, Soak Delay, Tickle Pulse Volts, Tickle Pulse Width and Pulses to Average are all enabled. File Browse, File Name and Create File? are all hidden. With "From File" selected, these conditions are reversed. Check Box Unchecked Selecting this control opens a sub-dialog that permits various C/V parameters to be adjusted if the Task is programmed into a Branch Loop. See the discussion below. Button Unpressed This button opens the standard Windows file browser so that the custom input file can be located. This button is hidden when Drive Profile Type is "Standard Bipolar", but visible when the type is "From File". Text "" Read-only. This control shows the path and file name of the Real 0.2 14 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. custom input file. It is updated when an input file is browsed and properly read or when a new file is created. The control is read-only meaning that it cannot be used to input the file path and file name. It is informational only. The control is hidden when Drive Profile Type is "Standard Bipolar", but visible when the type is "From File". Create File? Button Unpressed When Drive Profile Type is "From File" this control opens a dialog that allows a new custom drive profile file to be created and stored as discussed below. The control is hidden when Drive Profile Type is "Standard Bipolar". Sample Name Text "" 24-characters maximum. An identifier used to describe the sample being tested. Lot ID Text "" 12-characters maximum. An identifier used to describe the lot from which the sample being tested comes. Wafer ID Text "" 12-characters maximum. An identifier used to describe the wafer on which the sample being tested is located. Die Row Integer 0 A value used to indicate the y position on the wafer of the die on which the sample under test is located. Die Column Integer 0 A value used to indicate the x position on the wafer of the die on which the sample under test is located. Capacitor Number Integer 0 A value used to indicate the position of the sample on the die. Sensor Enable Check Box Unchecked An external voltage may be captured simultaneously with the capacitance measurement during the C/V Task execution. The voltage might be produced by any instrument that produces a voltage as a result of some physical property such as temperature, displacement, etc. The voltages are captured, displayed and stored along with the measured capacitance. This control enables the capture of the external voltage. Enabling this control also enables Sensor Scale, Sensor Offset, Sensor Label and Sensor Impedance. Sensor Scale Real 1 When an external voltage is read it is normally linearly related to some physical property. That property can be recovered by... Property = mX + b where X is the measured voltage and m and b are scale and offset terms. This control is used to enter the scale term, m. The control is disabled if Sensor Enable is unchecked. Sensor Offset Real 0 When an external voltage is read it is normally linearly related to some physical property. That property can be recovered by... Property = mX + b where X is the measured voltage and m and b are scale and offset terms. This control is used to enter the offset term, b. The control is disabled if Sensor Enable is unchecked. Sensor Label Text "" 12-characters maximum. If the external sensor voltage is read, its converted value will be displayed along with the measured capacitance when recalled from the Archive. This label will be associated with the sensor trace on the plot. This control is disabled if Sensor Enable is unchecked. Sensor Impedance Integer 50 Enter the output impedance of the instrument attached to the sensor port. Provides a correction to the measured value as 15 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Internal Amplifier External Amplifier y ±500 V y ± 2,000 V y ±4,000 V y ±10,000 V y Custom Amp HVI Comm Port HVI Channel discussed above. This control is disabled if Sensor Enable is unchecked. Radio But- Checked One, and only one, of five possible voltage signal amplifiers ton must be selected to indicate the voltage scaling, voltage limits and the hardware to be used to produce the voltage. The Internal Amplifier button indicates that the voltage is to be generated by the Precision tester without the need to attach an external accessory High Voltage Interface (HVI) or High Voltage Amplifier. With this option selected, voltages are limited to ±100.0 Volts. This criterion is not checked until the Task is executed. With this control checked, HVI Comm Port and HVI Channel are disabled and forced to values of 0. Radio But- Unchecked One, and only one, of five possible voltage signal amplifiers ton must be selected to indicate the voltage scaling, voltage limits and the hardware to be used to produce the voltage. These four radio button each select an external amplifier connected to the Precision tester through a High Voltage Interface (HVI). In order for the Task to execute, the selected amplifier must be connected to the tester through an HVI at the HVI channel specified in HVI Channel. The HVI must be connected to the tester at the HVI port specified in HVI Port. The checking for the external accessories and their configuration occurs at execution time so that the Task may be configured with the hardware disconnected or turned off. The specified voltages are constrained to be less than or equal to the maximum voltage of the selected amplifier. This too is checked at execution time. Care must be taken that the combined specified voltage and Profile Offset value remains within the voltage range. If any of these external amplifiers is selected, HVI Comm Port and HVI Channel are enabled and set to a new default value of 1. Custom Amp was added as of Version 3.1.0. See the discussion above. Integer 0 0, 1 or 2. If an external amplifier is selected to produce the drive signals, the amplifier is connected to the Precision tester through a High Voltage Interface (HVI). The HVI is connected to the tester at one of two DB-25 connectors on the rear panel of the tester. This control selects the DB-25 connector at which the software is to look for the HVI and the amplifier. A '0' value indicates that no HVI is to be used. When Internal Amplifier is selected, this control is disabled and forced to a '0' value. When any other amplifier is selected the control is enabled and preset to a default value of '1'. The control can then be adjusted to a value of '2', but may not be set to '0' when an external amplifier is selected. An HVI must be located at the port specified. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. Integer 0 0, 1 or 2. If an external amplifier is selected to produce the drive signals, the amplifier is connected to the Precision tester through a High Voltage Interface (HVI). The HVI has two channels to which up to two High Voltage Amplifiers may be 16 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Drive Channel Integer 0 Drive Port Integer 0 Return Channel Integer 0 Return Port Integer 0 connected. This control selects the channel to which is connected the required amplifier. A '0' value indicates that no HVA is to be used. When Internal Amplifier is selected, this control is disabled and forced to a '0' value. When any other amplifier is selected the control is enabled and preset to a default value of '1'. The control can then be adjusted to a value of '2', but may not be set to '0' when an external amplifier is selected. An amplifier of the specified voltage range must be attached to the HVI at the specified channel. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. 0-48. An accessory 48-channel multiplexer may be connected to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. This control selects the multiplexer channel through which to route the drive signal. A '0' indicates that no multiplexer channel is to be used. If a non-zero value is selected the multiplexer must be attached to the Precision tester. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into this control, Drive Port is disabled. 0, 1 or 2. An accessory 48-channel multiplexer may be connected to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. The multiplexer may be connected to the tester at one of two DB-25 connectors on the tester rear panel. This control selects the DB-25 connector to which the multiplexer that is to route the drive signal is connected. A '0' indicates that no multiplexer channel is to be used. If a non-zero value is selected the multiplexer must be attached to the Precision tester. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into the Drive Channel control, this control is disabled.An accessory 48-channel multiplexer may be connected 0-48. to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. This control selects the multiplexer channel through which to route the return signal. A '0' indicates that no multiplexer channel is to be used. If a non-zero value is selected the multiplexer must be attached to the Precision tester. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into this control, Return Port is disabled. 0, 1 or 2. An accessory 48-channel multiplexer may be connected to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. The multiplexer may be connected to the tester at one of two DB-25 connectors on the tester rear panel. This control selects the DB-25 17 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Adjust Mux in a Loop Check Box Unchecked Enable Ref. Cap. Check Box Unchecked Enable Ref. Resis- Check Box Unchecked tor Drive Closed Check Box Checked Return Closed Check Box Checked Amp. Level List Box 1.0 Start at Last Amp Check Box Unchecked Level Auto Amplification Check Box Checked connector to which the multiplexer that is to route the return signal is connected. A '0' indicates that no multiplexer channel is to be used. If a non-zero value is selected the multiplexer must be attached to the Precision tester. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into the Return Channel control, this control is disabled. Checking this box opens a dialog that can be used to select up to 15 Drive and Return channel and port combinations. These combinations will be sequenced through if the Task is located in a Branch Loop. See the discussion below. An internal high precision 1.0 nF reference capacitor may be switched into the drive and return signal path for measurement. The purpose is for hardware and software validation and calibration. This internal test element will be placed into the signal path in parallel with the internal reference resistor (if it is enabled) and with any attached sample. An internal high precision 25 M-Ohm reference resistor may be switched into the drive and return signal path for measurement. The purpose is for hardware and software validation and calibration. This internal test element will be placed into the signal path in parallel with the internal reference capacitor (if it is enabled) and with any attached sample. This control switches the relay that connects the drive signal to the sample and places the drive voltage into the signal path. This control would normally never be unchecked. However, it may be unchecked in order to measure system response with no drive signal to determine system parasitics. This control switches the relay that connects the sample return channel to the measurement circuitry, completing the signal path. This control would normally never be unchecked. However, it may be unchecked in order to measure system response with no return signal to determine system parasitics. The return signal that is captured from the sample as a result of the drive stimulus is integrated to produce a measured value. Before the signal is integrated it is passed through an amplifier with eight switchable gain levels. This control selects the signal gain level. The control is disabled if Auto Amplification is enabled. The utility of deselecting Auto Amplification and manually setting the gain is that Auto Amplification repeatedly applies the signal and adjusts the gain until the return signal is of acceptable strength. If unrecorded stimulus to the sample is unacceptable, the amplification level should be set manually. Instructs the Hardware Driver to begin looking for the proper amplification level by setting the amplification level selected for the previously executed Measurement Task. This control is disabled if Auto Amplification is disabled. The return signal that is captured from the sample as a result of the drive stimulus is integrated to produce a measured val- 18 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Comments Text Help OK Button Button Cancel/Plot Button ue. Before the signal is integrated it is passed through an amplifier with eight switchable gain levels. When this control is enabled, the amplification level is automatically adjusted. This is done by repeatedly applying the drive signal, then adjusting the amplification level until the return signal is of acceptable strength. This lengthens any experiment and applies signals that are unrecorded before the measurement. If these conditions are not acceptable, this control should be disabled. Checking this control disables Amp. Level. but enables Start at Last Amp Level. "" 255-characters maximum. A place for the user to provide a detailed description of the Task and its use in the experiment. Unpressed Read this help page. Unpressed Accept the configured values and add the C/V Task to the Test Definition or update its configuration in the Test Definition. Unpressed Close the dialog but to not add or update the C/V Task to the Test Definition. If the Task is recalled from the DataSet Archive, this button will close the dialog and cause the Archived data to be displayed. b.4 - Mux Loop Adjust Dialog Figure b.4.1 - Configure the Adjustment of the Multiplexer Parameters in a Branch Loop. b.5 - Description 19 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Checking the Adjust Mux in a Loop control allows the C/V Task to change the Multiplexer channels provided it is located within a Branch Loop. This, in turn, allows multiple capacitors to be fully measured automatically without reconfiguring the program or adjusting hardware. When the control is checked, the dialog in the Figure above appears, Allowing up to fifteen loop cycles to be independently programmed. (Loop cycles exceeding fifteen will repeat the channel sequencing.). In the example samples 1 through 4 have their Drive Signal Connected to a common multiplexer attached to DB-25 port 1. Sample 5 is connected to a separate mux attached to Port 2. Return signals for samples 1, 2 and 5 are common and connected to the same channel (2) of the mux at port 1. Samples 3 and 4 also have common return signals connected to channel 2 of the second multiplexer at port 2. b.6 - Controls Name Loop Count Type Default Integer 0 Drive Channel n Integer Drive Port n Integer Return Channel n Integer Return Port n Integer Help Okay Cancel Button Button Button Description 0-15. Indicates the number of unique Drive and Return Channel and Port sequences to be iterated. The value entered here enables or disables the Drive Channel n, Drive Port n, Return Channel n and Return Port n controls depending on n and the Loop Count selected. 0 The Drive Channel on the multiplexer to be enabled when the Branch Loop iteration mod n = 0. This control is disabled unless Loop Count >= n. 0 The DB-25 connector on the rear of the Precision tester to which the multiplexer is connected whose channel is to be attached to the Drive Signal when the Branch Loop iteration mod n = 0. This control is disabled unless Loop Count >= n. 0 The Return Channel on the multiplexer to be enabled when the Branch Loop iteration mod n = 0. This control is disabled unless Loop Count >= n. 0 The DB-25 connector on the rear of the Precision tester to which the multiplexer is connected whose channel is to be attached to the Return Signal when the Branch Loop iteration mod n = 0. This control is disabled unless Loop Count >= n. Unpressed Call up a dialog-specific help page. Unpressed Accept the programmed values and enable the Branch Loop update. Unpressed Close the dialog and disable the Branch Loop update. 20 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. b.7 - Custom File Creation Dialog Figure b.7.1 - Custom Profile Input File Creation Dialog. Figure b.7.2 - Standard Windows File Browser Dialog. b.8 - Description The dialog in Figure b.7.1 appears when the Create File? button is clicked. This dialog 21 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. is used to create a custom input file. It utility is that is guarantees a correct file format and automatically comments its output file. However, the dialog option is tedious when trying to construct a file of more than a few step voltages. (More than 100 points is impractical.) Such file might be created using a text editor such as Notepad.exe. They can be created using a word processor provided the file is saved as Text type and not as a standard word processor file. A more practical solution may be to create the file in a spreadsheet such as Excel and exporting it to a text-only file format. The file may then need some additional editing in a text editor such as Notepad. The dialog is used to specify the various C/V parameters include number of sample points, soak time, pulse volts and pulse width. Then each of the sample voltages is independently specified and added to the list until the number of points is reached. Voltages may be independently selected and removed or the entire list cleared. Figure b.7.2 is the standard Windows file browser that appears when the browser (>>) button is clicked. It is used to select a file path and file name for a pre-existing C/V custom input file when the custom profile option is selected. b.9 - Controls Control Number of Points Type Integer Help Soak Time Button Real Pulse Volts Real Pulse Width Real Pulses to Average Integer Default 101 Description The total number of voltage steps to be applied during the custom drive profile. This number must match the number of voltage entries in the file. The value in this control combines with the Set Point # value to control the Add button. When Set Point # exceeds Number of Points, the Add button is disabled and the Save As button enabled. The Add button may be reenabled by adjust the number of points. Unpressed Read this help page. 1.0 In milliseconds. 1e-3 to 30,000.0. Once the drive profile has stepped to a voltage a fixed 1.0 ms delay occurs. Then a user-controllable second soak delay of this duration occurs before any small signal stimulus is applied to the sample. The purpose of the delay is to allow any current induced by the voltage step to dampen so that the sample is at a steady state current condition. 0.2 -10,000.0 to 10,000.0. This is the value of the small signal voltage applied during each stimulus period at each step voltage. The value is normally very small with respect to the step voltage. 1.0 In milliseconds. 1e-3 to 30,000. This is the duration of a single pulse in the small signal measurement of capacitance. It is also the duration between pulses when multiple pulses are used. This value is critical to predicting the duration of the experiment. 25 1-25. This is the number of small signal pulses to be used in making the capacitance measurement at each step voltage. Since the signal applied is very small, the measurement is 22 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Set Point # Integer 1 Voltage To Real Uninitialized Add Button Unpressed Delete Line Button Unpressed Delete All Button Unpressed Point # Integer List Empty Voltage Real List Empty noise-prone. Increasing this value will reduce the noise in the data. The drawback is that it also increases the duration of the Task execution. Read-Only. An indicator that shows the next voltage point to be added to the Voltage list. This value is incremented by the Add button. It is decremented by the Delete Line button and reset to a value of '1' by the Delete All button. When the value in this control exceeds Number of Points, the Add button is disabled. The Save As button is enabled when the control exceeds Number of Points. -10,000.0 to 10,000.0. The next voltage to be added to the list of voltages is entered into this control. When the Add button is clicked the voltage in this control is highlighted and the focus is set to the control so that the next voltage can be added without having reselect the control. When Add is clicked the voltage in this control is added to the end of the Voltage list box. This control adds the voltage in Voltage To to the end of the list in the Voltage list box. It increments the value in Set Point #. When Set Point # exceeds Number of Points, Add is disabled. It may be reenabled by deleting lines from the Voltage list box, clearing the Voltage list box or increasing Number of Points. When Add is clicked, the focus is set on Voltage To and the value in that control is highlighted. This allows the changing of voltages in Voltage To to be accomplished without having to reselect the control. Any single value in the Voltage list box may be selected. When Delete Line is clicked that value will be removed from its position in the Voltage list. The Point # control will be truncated by one entry. The Set Point # control will be decremented. This action may cause the Add button to be reenabled if it was disabled. Pressing this button will cause the Voltage and Point # list controls to be emptied. Set Point # will be reset to a value of '1'. If the Add button was disabled, it will be reenabled. Read-only. This is a sequential and serial list of values. It is positioned adjacent to the Voltage list and simply indicates the position in the Voltage list of any entry in the list. When Add is clicked this list has the next serial value appended to it. That last entry becomes highlighted. When a value is selected in the Voltage list, the adjacent value is selected in the Point # list. If Delete Line is pressed, the Point # list will be truncated by one value. The number of entries in this list will be the value in Set Point # less one. This is a sequential list of the step voltages that are to form the C/V measurement profile. When Add is clicked the value in Voltage To is appended to this list and that value is highlighted. Any other entry in the list may be selected. When Delete Line is clicked the selected entry will be removed from its position in the list. Delete All will empty the list. The number of entries in this list will be the value in Set 23 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Save As Button OK Button Cancel Button Point # less one. Unpressed This control opens the standard Windows browser dialog. This allows the user to identify a path and filename to save the currently configured profile. If this action is not taken, the OK control will not allow the user to leave the Create File? dialog. This control is disabled unless Set Point # exceeds the value in Number of Points. Once a file has been saved the OK control is enabled. Unpressed This control exits the dialog. The control will not permit the user to exit the dialog unless a file has been saved. In order to exit without saving, use the Cancel control. The control is disabled until a file has been saved. Unpressed This control exits the dialog. No file need be saved to use this control. b.10 - Parameter Adjustment Dialog Figure b.10.1 - Branch Loop Parameter Adjustment Configuration Dialog. 24 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. b.11 - Discussion When Adjust Parameters in a Branch Loop is switched from unchecked to checked, the subdialog of Figure 6 appears. When the C/V Task is programmed into a Branch Loop, most of the profile creation parameters can be adjusted from loop iteration-to-iteration. When this option is enabled for a parameter, the initial loop will use the normally programmed parameter value as a baseline. Subsequent loop iterations will adjust the parameter value by either scaling the previous value by a constant factor or incrementing it by a constant value. Minimal restrictions are placed on the scale factor or increment. These will be real-valued unless the parameter being adjusted is an integer, such as the loop point count. For voltages, negative scale factors are permitted. If the scale factor is negative, the parameter will alternate between positive and negative as it is iterated. Scale factors of absolute value less than 1.0 and negative increments are generally permitted so that a parameter may be reduced from its initial value as the Task is iterated. The user must take care that the combination of initial value, scale factor or increment and maximum possible number of Branch Loops will not combine to eventually produce a parameter value that is outside the capability of the Precision configuration. b.12 - Controls Name Type Default Discussion Adjust C/V Soak Time in a Check Box Unchecked Enables the adjustment of the pre-measurement delay Loop at the step voltage in a Branch Loop. Checking this box enables Adjust by Scaling and Adjust by Incrementing. Soak Scale Factor and Soak Increment (ms) are enabled by the combination of checking this box and checking the appropriate choice of Adjust by Scaling and Adjust by Incrementing. Adjust by Scaling Check Box Checked Checking this box indicates that the C/V Soak Time is to be adjusted by multiplying the previous time by Soak Scale Factor. This control is disabled if Adjust C/V Soak Time in a Loop is unchecked. Enabling this control enables Soak Scale Factor. Checking this control will cause Adjust by Incrementing to be unchecked and Soak Increment to be disabled. Likewise, this control is unchecked when Adjust by Incrementing is checked. Adjust by Incrementing Check Box Unchecked Checking this box indicates that the C/V Soak Time is to be adjusted by adding Soak Increment (ms) to the previous time. This control is disabled if Adjust C/V Soak Time in a Loop is unchecked. Enabling this control enables Soak Increment (ms). Checking this control will cause Adjust by Scaling to be unchecked and Soak Scale Factor to be disabled. Likewise, this control is unchecked when Adjust by Scaling is checked. Soak Scale Factor Real 1.0 Strictly greater than zero. This is the scale factor by which to multiply the previous soak time to obtain the current soak time. This control is disabled if either Adjust C/V Soak Time in a Loop or Adjust by Scaling 25 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Soak Increment (ms) Real 0.0 Adjust C/V Max Voltage in Check Box Unchecked a Loop Adjust by Scaling Check Box Checked Adjust by Incrementing Check Box Unchecked VMax Scale Factor Real 1.0 VMax Increment Real 0.0 Adjust C/V Pulse Count in Check Box Unchecked a Loop Adjust by Scaling Check Box Checked is unchecked. In milliseconds. This is the increment to be added to the previous soak time to obtain the current soak time. This control is disabled if either Adjust C/V Soak Time in a Loop or Adjust by Incrementing is unchecked. Enables the adjustment of the maximum profile voltage in a Branch Loop. Checking this box enables Adjust by Scaling and Adjust by Incrementing. VMax Scale Factor and VMax Increment are enabled by the combination of checking this box and checking the appropriate choice of Adjust by Scaling and Adjust by Incrementing. Checking this box indicates that VMax is to be adjusted by multiplying the previous time by VMax Scale Factor. This control is disabled if Adjust C/V Max Voltage in a Loop is unchecked. Enabling this control enables VMax Scale Factor. Checking this control will cause Adjust by Incrementing to be unchecked and VMax Increment to be disabled. Likewise, this control is unchecked when Adjust by Incrementing is checked. Checking this box indicates that VMax is to be adjusted by adding VMax Increment to the previous time. This control is disabled if Adjust C/V Max Voltage in a Loop is unchecked. Enabling this control enables VMax Increment. Checking this control will cause Adjust by Scaling to be unchecked and VMax Scale Factor to be disabled. Likewise, this control is unchecked when Adjust by Scaling is checked. Unrestricted. This is the scale factor by which to multiply the previous maximum voltage to obtain the current maximum voltage. This control is disabled if either Adjust C/V Max Voltage in a Loop or Adjust by Scaling is unchecked. In Volts. This is the increment to be added to the previous maximum voltage to obtain the current maximum voltage. This control is disabled if either Adjust C/V Max Voltage in a Loop or Adjust by Incrementing is unchecked. Enables the adjustment of the number of tickle pulses at a voltage step in a Branch Loop. Checking this box enables Adjust by Scaling and Adjust by Incrementing. Pulse Count Scale Factor and Pulse Count Increment are enabled by the combination of checking this box and checking the appropriate choice of Adjust by Scaling and Adjust by Incrementing. Checking this box indicates that the tickle pulse count is to be adjusted by multiplying the previous time by Pulse Count Scale Factor. This control is disabled if Adjust C/V Pulse Count in a Loop is unchecked. Enabling this control enables Pulse Count Scale Factor. 26 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Adjust by Incrementing Check Box Unchecked Pulse Count Scale Factor Integer 1 Pulse Count Increment Integer 0 Adjust C/V Point Count in Check Box Unchecked a Loop Adjust by Scaling Check Box Checked Adjust by Incrementing Check Box Unchecked Checking this control will cause Adjust by Incrementing to be unchecked and Pulse Count Increment to be disabled. Likewise, this control is unchecked when Adjust by Incrementing is checked. Checking this box indicates that the tickle pulse count is to be adjusted by adding Pulse Count Increment to the previous time. This control is disabled if Adjust C/V Pulse Count in a Loop is unchecked. Enabling this control enables Pulse Count Increment. Checking this control will cause Adjust by Scaling to be unchecked and Pulse Count Scale Factor to be disabled. Likewise, this control is unchecked when Adjust by Scaling is checked. This is the scale factor by which to multiply the previous pulse count to obtain the current pulse count. This control is disabled if either Adjust C/V Pulse Count in a Loop or Adjust by Scaling is unchecked. Note that since this value is an integer, fractional scaling is not available. If the pulse count is to be reduced, from iteration-to-iteration, incrementing must be used. In pulses. This is the increment to be added to the previous pulse count to obtain the current pulse count. This control is disabled if either Adjust C/V Pulse Count in a Loop or Adjust by Incrementing is unchecked. Enables the adjustment of the number of voltage steps in the profile in a Branch Loop. Checking this box enables Adjust by Scaling and Adjust by Incrementing. Point Count Scale Factor and Point Count Increment are enabled by the combination of checking this box and checking the appropriate choice of Adjust by Scaling and Adjust by Incrementing. Checking this box indicates that the voltage step point count is to be adjusted by multiplying the previous time by Point Count Scale Factor. This control is disabled if Adjust C/V Point Count in a Loop is unchecked. Enabling this control enables Point Count Scale Factor. Checking this control will cause Adjust by Incrementing to be unchecked and Point Count Increment to be disabled. Likewise, this control is unchecked when Adjust by Incrementing is checked. Checking this box indicates that the voltage step point count is to be adjusted by adding Point Count Increment to the previous time. This control is disabled if Adjust C/V Point Count in a Loop is unchecked. Enabling this control enables Point Count Increment. Checking this control will cause Adjust by Scaling to be unchecked and Point Count Scale Factor to be disabled. Likewise, this control is unchecked when Adjust by Scaling is checked. 27 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Point Count Scale Factor Integer 1 Point Count Increment Integer 0 Adjust C/V Tickle Volts in Check Box Unchecked a Loop Adjust by Scaling Check Box Checked Adjust by Incrementing Check Box Unchecked Volts Scale Factor Real 1.0 Volts Increment Real 0.0 Adjust C/V Tickle Pulse Width in a Loop Check Box Unchecked This is the scale factor by which to multiply the previous point count to obtain the current point count. This control is disabled if either Adjust C/V Point Count in a Loop or Adjust by Scaling is unchecked. Note that since this value is an integer, fractional scaling is not available. If the pulse count is to be reduced, from iteration-to-iteration, incrementing must be used. In points. This is the increment to be added to the previous point count to obtain the current point count. This control is disabled if either Adjust C/V Pulse Count in a Loop or Adjust by Incrementing is unchecked. Enables the adjustment of the tickle voltage in a Branch Loop. Checking this box enables Adjust by Scaling and Adjust by Incrementing. Volts Scale Factor and Volts Increment are enabled by the combination of checking this box and checking the appropriate choice of Adjust by Scaling and Adjust by Incrementing. Checking this box indicates that the tickle voltage is to be adjusted by multiplying the previous time by Volts Scale Factor. This control is disabled if Adjust C/V Tickle Volts in a Loop is unchecked. Enabling this control enables Volts Scale Factor. Checking this control will cause Adjust by Incrementing to be unchecked and Volts Increment to be disabled. Likewise, this control is unchecked when Adjust by Incrementing is checked. Checking this box indicates that the tickle voltage is to be adjusted by adding Volts Increment to the previous time. This control is disabled if Adjust C/V Tickle Volts in a Loop is unchecked. Enabling this control enables Volts Increment. Checking this control will cause Adjust by Scaling to be unchecked and Volts Scale Factor to be disabled. Likewise, this control is unchecked when Adjust by Scaling is checked. This is the scale factor by which to multiply the previous tickle voltage to obtain the current voltage. This control is disabled if either Adjust C/V Tickle Volts in a Loop or Adjust by Scaling is unchecked. In volts. This is the increment to be added to the previous tickle voltage to obtain the current voltage. This control is disabled if either Adjust C/V Tickle Volts in a Loop or Adjust by Incrementing is unchecked. Enables the adjustment of the duration of the tickle voltage in a Branch Loop. Checking this box enables Adjust by Scaling and Adjust by Incrementing. P/W Scale Factor and P/W Increment are enabled by the combination of checking this box and checking the appropriate choice of Adjust by Scaling and Adjust by 28 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Adjust by Scaling Adjust by Incrementing P/W Scale Factor P/W Increment (ms) Help OK Cancel Incrementing. Check Box Checked Checking this box indicates that the tickle pulse width is to be adjusted by multiplying the previous time by P/W Scale Factor. This control is disabled if Adjust C/V Tickle Pulse Width in a Loop is unchecked. Enabling this control enables P/W Scale Factor. Checking this control will cause Adjust by Incrementing to be unchecked and P/W Increment to be disabled. Likewise, this control is unchecked when Adjust by Incrementing is checked. Check Box Unchecked Checking this box indicates that the tickle pulse width is to be adjusted by adding P/W Increment to the previous time. This control is disabled if Adjust C/V Tickle Pulse Width in a Loop is unchecked. Enabling this control enables P/W Increment. Checking this control will cause Adjust by Scaling to be unchecked and P/W Scale Factor to be disabled. Likewise, this control is unchecked when Adjust by Scaling is checked. Real 1.0 This is the scale factor by which to multiply the previous tickle duration to obtain the current pulse width. This control is disabled if either Adjust C/V Tickle Pulse Width in a Loop or Adjust by Scaling is unchecked. Real 0.0 In milliseconds. This is the increment to be added to the previous tickle duration to obtain the current pulse width. This control is disabled if either Adjust C/V Tickle Pulse Width in a Loop or Adjust by Incrementing is unchecked. Button Unpressed Read these Help pages. Button Unpressed Accept the configured parameter adjustment terms and close the dialog Button Unpressed Close the dialog. Make no changes. 29 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. c. - QuikLook Setup Task Name: Version: Last Update: In QuikLook Menu: Folder: Subfolder: Subsubfolder: Window Name: Change Record: Known Bugs: User Variables Added: C/V 3.1.0 03 April 2002 No None None None C/V Setup Go to Change Record None None 30 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. c.1 - Setup Dialog Figure c.1.1 - QuikLook C/V Task Measurement Configuration Dialog - Standard Bipolar Profile. 31 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure c.1.2 - QuikLook C/V Task Measurement Configuration Dialog - Custom File Profile. c.2 - Description This dialog fully configures the C/V Task for execution under QuikLook. All parameters necessary for complete Task specification are present. The upper left section of the dialog has controls to configure the waveform and the small signal pulse stimulus that forms the C/V measurement. In addition the Task is named and the sample parameters Area and Thickness are specified. Area and Thickness are mostly informational but Area is also used in computing the measured capacitance, so must be properly entered. The lower left 32 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. portion of the dialog provides sample information. These parameters have no effect on the behavior of the Task or the value of the measured data. The external sensor is also enabled in this region. The right half of the dialog deals with the hardware configuration. If external amplifiers and/or multiplexers are to be used, they are configured here. Internal test elements can be switched into the signal path here as well. Finally the amplification level can either be selected or set to automatic. Note that the C/V measurement is a very slow test. Selecting Automatic amplification will dramatically increase the duration of the experiment. Two nearly identical dialogs appear above. The first dialog shows the configuration of a Standard Bipolar Triangular drive voltage stimulus waveform. This is the typical applied stimulus. The waveform is computed from the number of points and the VMax value. Additional parameters configure the small signal stimulus at each step. The second dialog shows the Task configured to perform a custom drive profile read from a file. Most standard configuration controls have been disabled. New controls, not evident in the first dialog, appear to browse to the file that holds the custom configuration, or open a dialog that will allow the creation of a custom profile file. Once the file is created and read, control parameters are updated based on the file input. The VMax and Profile Offset controls remain active, since they can be used to alter the basic custom waveform as described below. Three new controls have been added in Version 3.1.0. y y Custom Amplifier - This radio button has been added to the External Amplifier list. This control allows the user to attach an existing amplifier (not provided by Radiant Technologies) to the experiment. The user must provide RTI the amplifier specifications such as voltage range, gain factor and maximum rise time. RTI will then provide the user with an identifying module that will allow the amplifier to be connected to the HVI. Sensor Impedance - This is added to the suite of sensor controls. This control specifies an integer output impedance of the instrument attached to the Sensor port. The sensor output impedance in series with the Precision input impedance (currently about 4 k-Ω) make a voltage divider that distorts the measured voltage by: Measured = Actual x 4k / (4k + Sensor Impedance). y If the sensor output impedance is large with respect to the 4k input impedance, the distortion will be significant. This control accepts a value that is used to correct this distortion. Start at Last Amp Value. When Auto Amplification is checked, the system will begin to search for the correct amplification level by using the value specified in the Amp Level control, even though the control is disabled. Checking the new control will force the search to start at the amplification level that was established 33 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. in the last measurement. c.3 - Controls Control C/V Task Name Type Text Default C/V-# Points Integer 101 VMax Real 5.0 Soak Delay Real 1.0 Profile Offset Real 0.0 Description 25 characters maximum. Provide an identifier for the C/V Task being configured. The Task will be referred to using this identifier in the DataSet Archive. The name should be descriptive and unique to this instance of the Task. 1 or greater. This is the number of voltage steps that will form the drive profile. It is also the number of measured values that will be reported. For Standard Bipolar profiles, this value must be an integer multiple of four, plus one. A value of 1 may be entered. In that case a single measurement point will be made at VMax. The software will automatically set the number of points to the criterion if the value entered is not an integer multiple of 4 plus one. If the Drive Profile Type is set to "From File", the points control becomes read only. It is adjusted to the number of points read in the file. In the custom file configuration, no criterion is placed on the number of points. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. -10,000.0 to 10,000.0. This is the key parameter in building a standard bipolar drive profile. The drive voltage profile will step from zero volts to this value, back to zero volts, to -VMax and back to zero volts. If this value is negative, the first leg of the profile will be of negative voltage. The VMax control remains enabled if Drive Profile Type is set to "From File". VMax is updated when the file is read to the voltage of maximum absolute value in the profile. However, the value can then be changed to scale the custom profile so that it retains its original shape but achieves different voltage values. In milliseconds. 1e-3 to 30,000. Once the drive profile has stepped to a voltage a fixed 1.0 ms delay occurs. Then a user-controllable second soak delay of this duration occurs before any small signal stimulus is applied to the sample. The purpose of the delay is to allow any current induced by the voltage step to dampen so that the sample is at a steady state current condition. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. -10,000.0 to 10,000.0. This is a voltage value that can be added to either the standard bipolar or custom waveform profiles to translate the profile up or down. This value is not read from a custom file, but the control remains active if the Drive Profile Type is set to "From File". Care must 34 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Tickle Pulse Volts Real Tickle Pulse Width Real Pulses to Average Integer Run Time Real Area Real Thickness Real Drive Profile Type List Box File Browse (>>) Button be taken by the user that the combination of this value and of the drive profile values, whether custom or standard bipolar, do not exceed the capabilities of the amplifier under use. 0.06 -10,000 to 10,000. This is the value of the small signal voltage applied during each stimulus period at each step voltage. The value is normally very small with respect to the step voltage. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. 1.0 In milliseconds. 1e-3 to 30,000. This is the duration of a single pulse in the small signal measurement of capacitance. It is also the duration between pulses when multiple pulses are used. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. 25 1-25. This is the number of small signal pulses to be used in making the capacitance measurement at each step voltage. Since the signal applied is very small, the measurement is noise-prone. Increasing this value will reduce the noise in the data. The drawback is that it also increases the duration of the Task execution. If the Drive Profile Type is set to "From File", the points control becomes read only. It is updated by the value read from the custom input file. This value is critical to predicting the duration of the experiment. When it is altered, the Run Time control will be updated. 18.1 s In seconds. Read-Only. This control is updated when any of the controls that affect the experiment duration is updated. It is a prediction of the duration of the Task execution. As a result of repeated measurements if Auto Amplification is selected as well as the accumulation of other small software delays, this estimate will always be low. 1e-4 In cm2. This is the surface area of the sample electrode. This value is informational, but is also used in computing measured data. A mis-entered value will result in misscaled data. 0.3 In µm. This is the thickness of the ferroelectric material in the sample. The value is strictly informational. Standard This control switches between an automatically computed Bipolar Standard Bipolar Triangular drive voltage profile and a custom profile read in from an input file. With "Standard Bipolar" selected, Points, Soak Delay, Tickle Pulse Volts, Tickle Pulse Width and Pulses to Average are all enabled. File Browse, File Name and Create File? are all hidden. With "From File" selected, these conditions are reversed. Unpressed This button opens the standard Windows file browser so that the custom input file can be located. This button is hidden when Drive Profile Type is "Standard Bipolar", but 35 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. File Name Create File? Sample Name Lot ID Wafer ID Die Row Die Column Capacitor Number Sensor Enable Sensor Scale Sensor Offset Sensor Label visible when the type is "From File". Read-only. This control shows the path and file name of the custom input file. It is updated when an input file is browsed and properly read or when a new file is created. The control is read-only meaning that it cannot be used to input the file path and file name. It is informational only. The control is hidden when Drive Profile Type is "Standard Bipolar", but visible when the type is "From File". Button Unpressed When Drive Profile Type is "From File" this control opens a dialog that allows a new custom drive profile file to be created and stored as discussed below. The control is hidden when Drive Profile Type is "Standard Bipolar". Text "" 24-characters maximum. An identifier used to describe the sample being tested. Text "" 12-characters maximum. An identifier used to describe the lot from which the sample being tested comes. Text "" 12-characters maximum. An identifier used to describe the wafer on which the sample being tested is located. Integer 0 A value used to indicate the y position on the wafer of the die on which the sample under test is located. Integer 0 A value used to indicate the x position on the wafer of the die on which the sample under test is located. Integer 0 A value used to indicate the position of the sample on the die. Check Box Unchecked An external voltage may be captured simultaneously with the capacitance measurement during the C/V Task execution. The voltage might be produced by any instrument that produces a voltage as a result of some physical property such as temperature, displacement, etc. The voltages are captured, displayed and stored along with the measured capacitance. This control enables the capture of the external voltage. Enabling this control also enables Sensor Scale, Sensor Offset and Sensor Label. Real 1 When an external voltage is read it is normally linearly related to some physical property. That property can be recovered by... Property = mX + b where X is the measured voltage and m and b are scale and offset terms. This control is used to enter the scale term, m. The control is disabled if Sensor Enable is unchecked. Real 0 When an external voltage is read it is normally linearly related to some physical property. That property can be recovered by... Property = mX + b where X is the measured voltage and m and b are scale and offset terms. This control is used to enter the offset term, b. The control is disabled if Sensor Enable is unchecked. Text "" 12-characters maximum. If the external sensor voltage is read, its converted value will be displayed along with the measured capacitance when recalled from the Archive. This label will be associated with the sensor trace on the Text "" 36 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Sensor Impedance Internal Amplifier External Amplifier y ±500 V y ± 2,000 V y ±4,000 V y ±10,000 V y Custom Amp HVI Comm Port plot. This control is disabled if Sensor Enable is unchecked. Integer 50 Enter the output impedance of the instrument attached to the sensor port. Provides a correction to the measured value as discussed above. This control is disabled if Sensor Enable is unchecked. Radio Button Checked One, and only one, of five possible voltage signal amplifiers must be selected to indicate the voltage scaling, voltage limits and the hardware to be used to produce the voltage. The Internal Amplifier button indicates that the voltage is to be generated by the Precision tester without the need to attach an external accessory High Voltage Interface (HVI) or High Voltage Amplifier. With this option selected, voltages are limited to ±100.0 Volts. This criterion is not checked until the Task is executed. With this control checked, HVI Comm Port and HVI Channel are disabled and forced to values of 0. Radio Button Unchecked One, and only one, of five possible voltage signal amplifiers must be selected to indicate the voltage scaling, voltage limits and the hardware to be used to produce the voltage. These four radio button each select an external amplifier connected to the Precision tester through a High Voltage Interface (HVI). In order for the Task to execute, the selected amplifier must be connected to the tester through an HVI at the HVI channel specified in HVI Channel. The HVI must be connected to the tester at the HVI port specified in HVI Port. The checking for the external accessories and their configuration occurs at execution time so that the Task may be configured with the hardware disconnected or turned off. The specified voltages are constrained to be less than or equal to the maximum voltage of the selected amplifier. This too is checked at execution time. Care must be taken that the combined specified voltage and Profile Offset value remains within the voltage range. If any of these external amplifiers is selected, HVI Comm Port and HVI Channel are enabled and set to a new default value of 1. Custom Amp was added as of Version 3.1.0. See the discussion above. Integer 0 0, 1 or 2. If an external amplifier is selected to produce the drive signals, the amplifier is connected to the Precision tester through a High Voltage Interface (HVI). The HVI is connected to the tester at one of two DB-25 connectors on the rear panel of the tester. This control selects the DB-25 connector at which the software is to look for the HVI and the amplifier. A '0' value indicates that no HVI is to be used. When Internal Amplifier is selected, this control is disabled and forced to a '0' value. When any other amplifier is selected the control is enabled and preset to a default value of '1'. The control can then be adjusted to a value of '2', but may not be set to '0' when an external amplifier is selected. An HVI must be located at the port 37 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. HVI Channel Integer 0 Drive Channel Integer 0 Drive Port Integer 0 Return Channel Integer 0 specified. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. 0, 1 or 2. If an external amplifier is selected to produce the drive signals, the amplifier is connected to the Precision tester through a High Voltage Interface (HVI). The HVI has two channels to which up to two High Voltage Amplifiers may be connected. This control selects the channel to which is connected the required amplifier. A '0' value indicates that no HVA is to be used. When Internal Amplifier is selected, this control is disabled and forced to a '0' value. When any other amplifier is selected the control is enabled and preset to a default value of '1'. The control can then be adjusted to a value of '2', but may not be set to '0' when an external amplifier is selected. An amplifier of the specified voltage range must be attached to the HVI at the specified channel. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. 0-48. An accessory 48-channel multiplexer may be connected to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. This control selects the multiplexer channel through which to route the drive signal. A '0' indicates that no multiplexer channel is to be used. If a non-zero value is selected the multiplexer must be attached to the Precision tester. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into this control, Drive Port is disabled. 0, 1 or 2. An accessory 48-channel multiplexer may be connected to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. The multiplexer may be connected to the tester at one of two DB-25 connectors on the tester rear panel. This control selects the DB-25 connector to which the multiplexer that is to route the drive signal is connected. A '0' indicates that no multiplexer channel is to be used. If a non-zero value is selected the multiplexer must be attached to the Precision tester. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into the Drive Channel control, this control is disabled. 0-48. An accessory 48-channel multiplexer may be connected to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. This control selects the multiplexer channel through which to route the return signal. A '0' indicates that no multiplexer channel is to be used. If a non-zero value is selected the multiplexer must be attached to the Precision tester. This is 38 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Return Port Enable Ref. Cap. Integer 0 Check Box Unchecked Enable Ref. Resistor Check Box Unchecked Drive Closed Check Box Checked Return Closed Check Box Checked Amp. Level List Box 1.0 checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into this control, Return Port is disabled. 0, 1 or 2. An accessory 48-channel multiplexer may be connected to the Precision tester. The multiplexer is normally used to route drive and return signals to various samples connected to the multiplexer using a probe card. The multiplexer may be connected to the tester at one of two DB-25 connectors on the tester rear panel. This control selects the DB-25 connector to which the multiplexer that is to route the return signal is connected. A '0' indicates that no multiplexer channel is to be used. If a nonzero value is selected the multiplexer must be attached to the Precision tester. This is checked at Task execution time so that the Task may be configured with the hardware absent or turned off. If a zero value is entered into the Return Channel control, this control is disabled. An internal high precision 1.0 nF reference capacitor may be switched into the drive and return signal path for measurement. The purpose is for hardware and software validation and calibration. This internal test element will be placed into the signal path in parallel with the internal reference resistor (if it is enabled) and with any attached sample. An internal high precision 25 M-Ohm reference resistor may be switched into the drive and return signal path for measurement. The purpose is for hardware and software validation and calibration. This internal test element will be placed into the signal path in parallel with the internal reference capacitor (if it is enabled) and with any attached sample. This control switches the relay that connects the drive signal to the sample and places the drive voltage into the signal path. This control would normally never be unchecked. However, it may be unchecked in order to measure system response with no drive signal to determine system parasitics. This control switches the relay that connects the sample return channel to the measurement circuitry, completing the signal path. This control would normally never be unchecked. However, it may be unchecked in order to measure system response with no return signal to determine system parasitics. The return signal that is captured from the sample as a result of the drive stimulus is integrated to produce a measured value. Before the signal is integrated it is passed through an amplifier with eight switchable gain levels. This control selects the signal gain level. The control is disabled if Auto Amplification is enabled. The utility of deselecting Auto Amplification and manually setting the 39 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Start at Last Amp Level Check Box Unchecked Auto Amplification Check Box Checked Help OK Cancel/Plot Button Button Button Unpressed Unpressed Unpressed gain is that Auto Amplification repeatedly applies the signal and adjusts the gain until the return signal is of acceptable strength. If unrecorded stimulus to the sample is unacceptable, the amplification level should be set manually. Instructs the Hardware Driver to begin looking for the proper amplification level by setting the amplification level selected for the previously executed Measurement Task. This control is disabled if Auto Amplification is disabled. The return signal that is captured from the sample as a result of the drive stimulus is integrated to produce a measured value. Before the signal is integrated it is passed through an amplifier with eight switchable gain levels. When this control is enabled, the amplification level is automatically adjusted. This is done by repeatedly applying the drive signal, then adjusting the amplification level until the return signal is of acceptable strength. This lengthens any experiment and applies signals that are unrecorded before the measurement. If these conditions are not acceptable, this control should be disabled. Checking this control disables Amp. Level but enables Start at Last Amp Level. Read this help page. Accept the configured values and execute the C/V Task Close the dialog without executing. 40 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. c.4 - Custom File Creation Dialog Figure c.4.1 - Custom C/V Profile File Creation Dialog. Figure c.4.2 - Standard Windows File Browser Dialog. c.5 - Description The dialog shown in Figure c.4.1 appears when the Create File? button is clicked. This 41 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. dialog is used to create a custom input file. It utility is that is guarantees a correct file format and automatically comments its output file. However, the dialog option is tedious when trying to construct a file of more than a few step voltages. (More than 100 is impractical.) Such file might be created using a text editor such as Notepad.exe. They can be created using a word processor provided the file is saved as Text type and not as a standard word processor file. A more practical solution may be to create the file in a spreadsheet such as Excel and exporting it to a text-only file format. The file may then need some additional editing in a text editor such as Notepad. The dialog is used to specify the various C/V parameters include number of sample points, soak time, pulse volts and pulse width. Then each of the sample voltages is independently specified and added to the list until the number of points is reached. Voltages may be independently selected and removed or the entire list cleared. Figure c.4.2, above, is the standard Windows file browser that appears when the browser (>>) button is clicked. It is used to select a file path and file name for a pre-existing C/V custom input file when the custom profile option is selected. c.6 - Controls Control Type Number of Points Integer Default 101 Help Soak Time Button Real Unpressed 1.0 Pulse Volts Real 0.06 Pulse Width Real 1.0 Pulses to Average Integer 25 Description The total number of voltage steps to be applied during the custom drive profile. This number must match the number of voltage entries in the file. The value in this control combines with the Set Point # value to control the Add button. When Set Point # exceeds Number of Points, the Add button is disabled and the Save As button enabled. The Add button may be reenabled by adjust the number of points. Read this help page. In milliseconds. 1e-3 to 30,000.0. Once the drive profile has stepped to a voltage a fixed 1.0 ms delay occurs. Then a user-controllable second soak delay of this duration occurs before any small signal stimulus is applied to the sample. The purpose of the delay is to allow any current induced by the voltage step to dampen so that the sample is at a steady state current condition. -10,000.0 to 10,000.0. This is the value of the small signal voltage applied during each stimulus period at each step voltage. The value is normally very small with respect to the step voltage. In milliseconds. 1e-3 to 30,000. This is the duration of a single pulse in the small signal measurement of capacitance. It is also the duration between pulses when multiple pulses are used. This value is critical to predicting the duration of the experiment. 1-25. This is the number of small signal pulses to be used in making the capacitance measurement at each step voltage. Since the signal applied is very small, the measurement is 42 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Set Point # Voltage To Add Delete Line Delete All Point # Voltage noise-prone. Increasing this value will reduce the noise in the data. The drawback is that it also increases the duration of the Task execution. Integer 1 Read-Only. An indicator that shows the next voltage point to be added to the Voltage list. This value is incremented by the Add button. It is decremented by the Delete Line button and reset to a value of '1' by the Delete All button. When the value in this control exceeds Number of Points, the Add button is disabled. The Save As button is enabled when the control exceeds Number of Points. Real Uninitialized -10,000.0 to 10,000.0. The next voltage to be added to the list of voltages is entered into this control. When the Add button is clicked the voltage in this control is highlighted and the focus is set to the control so that the next voltage can be added without having reselect the control. When Add is clicked the voltage in this control is added to the end of the Voltage list box. Button Unpressed This control adds the voltage in Voltage To to the end of the list in the Voltage list box. It increments the value in Set Point #. When Set Point # exceeds Number of Points, Add is disabled. It may be reenabled by deleting lines from the Voltage list box, clearing the Voltage list box or increasing Number of Points. When Add is clicked, the focus is set on Voltage To and the value in that control is highlighted. This allows the changing of voltages in Voltage To to be accomplished without having to reselect the control. Button Unpressed Any single value in the Voltage list box may be selected. When Delete Line is clicked that value will be removed from its position in the Voltage list. The Point # control will be truncated by one entry. The Set Point # control will be decremented. This action may cause the Add button to be reenabled if it was disabled. Button Unpressed Pressing this button will cause the Voltage and Point # list controls to be emptied. Set Point # will be reset to a value of '1'. If the Add button was disabled, it will be reenabled. Integer List Empty Read-only. This is a sequential and serial list of values. It is positioned adjacent to the Voltage list and simply indicates the position in the Voltage list of any entry in the list. When Add is clicked this list has the next serial value appended to it. That last entry becomes highlighted. When a value is selected in the Voltage list, the adjacent value is selected in the Point # list. If Delete Line is pressed, the Point # list will be truncated by one value. The number of entries in this list will be the value in Set Point # less one. Real List Empty This is a sequential list of the step voltages that are to form the C/V measurement profile. When Add is clicked the value in Voltage To is appended to this list and that value is highlighted. Any other entry in the list may be selected. When Delete Line is clicked the selected entry will be removed from its position in the list. Delete All will empty the list. The number of entries in this list will be the value in Set 43 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Save As Button Unpressed OK Button Unpressed Cancel Button Unpressed Point # less one. This control opens the standard Windows browser dialog. This allows the user to identify a path and filename to save the currently configured profile. If this action is not taken, the OK control will not allow the user to leave the Create File? dialog. This control is disabled unless Set Point # exceeds the value in Number of Points. Once a file has been saved the OK control is enabled. This control exits the dialog. The control will not permit the user to exit the dialog unless a file has been saved. In order to exit without saving, use the Cancel control. The control is disabled until a file has been saved. This control exits the dialog. No file need be saved to use this control. 44 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. d - QuikLook Plot Setup d.1 - Setup Dialog Figure d.1.1 - C/V Task QuikLook Plot Configuration Dialog. d.2 - Description This dialog is used to configure the plot that will be displayed as a result of the QuikLook measurement. Most of the controls in the dialog relate to plot labeling and results dialog text display. These are familiar to users of any QuikLook Measurement Task. The pri45 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. mary control that is unique to the C/V Task is the Plot Filter list box. This box determines the way that data will be manipulated before display. The various filter options are discussed further down on this page. Data manipulation controlled by the Plot Filter control is exceptional for a Task, though it also appears in the Hysteresis Task. Normally such manipulation would be performed by a Filter associated with the Task in a Test Definition. However, the various plotting options are so critical to the C/V measurement and essential to the QuikLook data representation that they are included here. d.3 - Controls Control Plot Title Type Text Default "" Description 60-characters maximum. Provide a description of the data that are to be displayed. Plot Subtitle Text "" 60-characters maximum. Extend the available text space for more detailed Task/data description. Plot X Axis Label Text "Volts" 60-characters maximum. Provide a units label for the value to be plotted along the independent X-Axis. This value is always voltage. The label may be changed by the user but should always reflect the drive profile voltage. Plot Y Axis Label Text "Capacitance (nF)" 60-characters maximum. Provide a units label for the value to be plotted along the dependent Y-Axis. This value is variable and depends on the Plot Filter. When Plot Filter is adjusted the text in this control is automatically adjusted. Once the Plot Filter is selected the text may be altered. Data Label Text "C/V Data" 32-characters maximum. Provide a label that can be associated with the data trace symbols, line type and color and used to identify the plot trace that represents the measured data. This label appears when there are multiple traces on the plot. That occurs when Sensor data are enabled and plotted. User Self-Prompt Text "" 60-characters maximum. This is a text value that is displayed above the plot on the results dialog. It allows the user to set a message to him/herself. The prompt may have a single User Variable appended to it. The example above shows the C/V point count appended to the prompt. Parameter to Append List Box <<None>> This box lists all of the available User Variables. to Prompt Any single available variable can be selected for appending to the User Self-Prompt text. In the example, the C/V point count is selected. Plot Filter List Box Capacitance (nF) A list of the four plot filter that can be applied to the measured data before they are shown. The filters are described in more detail below. A single filter may be selected using this control. As filters are changed, the value in Plot Y Axis Label is updated Comments Text "" 255-characters maximum. A control that allows a detailed description of the Task to be executed. Help Button Unpressed Read this help page. 46 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. OK Button Unpressed Cancel/Plot Button Unpressed Accept the configured values and execute the C/V Task Close the dialog without executing. d.4 - Plot Filters Unlike most Tasks (though similar to the Hysteresis Tasks) the data measured in the C/V QuikLook execution may be manipulated before they are displayed. This is accomplished by selecting a Plot filter before the Task is executed. Normally a Task would be required to associate itself with a Filter Task in a Test Definition and be executed within a DataSet in order to alter the presented data. In the C/V Task, the filter options are important enough to be required for the QuikLook execution. There are four filter options... y Capacitance (nF) - This is the default data representation. Acquired data represent Polarization in µC/cm2. Multiplying through by the Area * 1e3 nF/µF gives Capacitance in nF. Figure d.4.1 - QuikLook C/V Response - Capacitance (nF) Filter - Linear Sample. 47 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.2 - QuikLook C/V Response - Capacitance (nF) Filter - Ferroelectric Sample. y Normalized Capacitance (µF/cm2) - This representation involves the least manipulation of the original data. Acquired data represent Capacitance per area in µF/cm2. This is the representation indicated by the Filter. 48 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.3 - QuikLook C/V Response - Normalized Capacitance (µF/cm2) Filter - Linear Sample. 49 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.4 - QuikLook C/V Response - Normalized Capacitance (µF/cm2) Filter - Ferroelectric Sample. y Charge (µC) - Here the Normalized Capacitance data are integrated with respect to the step voltage at each measured point and multiplied by sample Area. The numerical integration is simply the running sum of the area of a rectangle and triangle defined by the current measured value, the previous measured value and the change in voltage from one step to the next. This is shown in the Figure. 50 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.5 - Numerical Integration. This first figure shows how the integration calculation is made for a single step voltage. The area under the curve has been laid on its side below the plot and scaled up while retaining its scale to make the representation clearer. The figure below shows an approximation to the overall integrated charge. It is an approximation because the small triangular portion of the calculation has been averaged out. As a result, small perturbations in the plotted integration are not evident. The entire example has been synthetically generated. 51 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.6 - Integration Results. 52 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.7 - QuikLook C/V Response - Charge (µC) Filter Linear Sample. 53 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.8 - QuikLook C/V Response - Charge (µC) Filter Ferroelectric Sample. y Polarization (µC/cm2) - Polarization is simply the integrated Capacitance. 54 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.9 - QuikLook C/V Response - Polarization (µC/cm2) Filter - Linear Sample. 55 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure d.4.10 - QuikLook C/V Response - Polarization (µC/cm2) Filter - Ferroelectric Sample. 56 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. e - Custom Drive Profile File Format A profile option exists that allows the user to create an overall stimulus waveform of any custom shape. This is accomplished by individually and independently stipulating every voltage in the profile. The profile, along with the other waveform parameters including number of points, soak time, pulse width, pulse voltage and pulses to average, is entered through a strictly-formatted text input file. The file format is... Number of points in the custom drive profile. No limit or criterion is placed on this value. The number of voltage entries in the file must agree with this value. The soak time in milliseconds. Value ranges from 1e-3 to 30,000.0. Line 2: The number of repetitive C/V pulses to perform and average. Value ranges from 1 Line 3: to 30. The tickle or pulse voltage to apply during the C/V measurement. This value Line 4: should be very small. 0.06 volts is default. The pulse width of the measurement pulse in milliseconds. Value ranges from 1e-3 Line 5: to 30,000.0. Line 6 to Points + 5: A sequential list of the voltages to be applied in the profile. Voltages are independent. The allowed range is determined by the hardware to be used. There must be as many lines with valid voltages as there are points specified on line one. Line 1: Figure e.1 shows a portion of a valid custom input file for the C/V Task. Note that there are in-line comments. These are permitted provided they follow the value entry in the line and are separated from the value by at least one space. The file must be text-only. It may be created by a text editor such as Notepad.exe. If a Word processor is used, the file must be saved as text only. A word processor formatted file includes binary header information that cannot be read by Vision. The file may also be created in a spreadsheet and output as a text-only file. 57 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure e.1 - C/V Task Custom Drive Profile Input File. The Lines "Preset Volts" and "Preset Pulse Width (ms)" are Valid for the Advanced C/V Task, but Should be Eliminated Here. 58 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. The sample custom drive profile set in the file shown above is plotted below. Figure e.2 - Sample Custom C/V Task Drive Profile. A custom file profile may be create "Automatically" with the help of a dialog available from both the QuikLook and Test Definition configuration dialogs. The dialog ensures file correctness, but is not practical for large profiles (> 100 points). Dialog details are presented in the configuration discussions. When the custom file input is selected, most profile configuration parameters are disabled in the configuration dialogs. However, the VMax parameter and the Profile Offset remain enabled. This is because a single custom file can be used as a template for a family of profiles that retains the basic profile shape, but translated and/or scaled. Whenever a custom file is read, the voltage of maximum absolute value is read and becomes VMax in the configuration dialog. However, VMax may be changed. When the file is actually used to drive the sample, it is scaled by: VMax / File voltage of maximum absolute value Entering the same file into the C/V Task, but adjusting VMax, therefore, allows the pro59 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. file to be scaled and reused as a different profile. Entering a VMax of the opposite sign of the voltage of maximum absolute value will invert the profile. Likewise, as with the standard bipolar triangular profile, the custom voltages can be translated up or down by entering a non-zero Profile Offset. Profile Offset is a voltage value that is added to every point in the custom profile. A negative value will shift the profile down, while a positive value translates it upwards. The user must take care that at no point in the profile does the combined scaled file value and offset produce a voltage that is greater in magnitude than the capability of the hardware being used. The figure below shows the original profile as well as a profile scaled to -1/3 and shifted upwards by 5.5 Volts. This is accomplished by change VMax to +5.0 and the offset to +5.5. Figure e.3 - Two Drive Profiles Created from the same Custom Input File. 60 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. f - Results and Data Presentation f.1 - QuikLook Data Representation Once a QuikLook execution has provided the C/V Task with measured data, the data are displayed in a Results Dialog. The dialog is represented in Figure f.1.1. Figure f.1.1 - C/V QuikLook Measurement Results Dialog - Linear Sample. To the left of the dialog measurement configuration parameters are shown for review. The central portion of the display is the plotted data. The plot can be adjusted by rightclicking on the plot surface, producing a popup menu from which selections can be made. See the main help pages for a detailed description of this menu and its use. Above the plot is the user Self-Prompt and its appended User Variable. Below the plot are a series of check boxes that indicate the validity of the results of the measurement. If results are in61 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. valid suggestions for correcting the problem may appear here. QuikLook is intended for a "let's see what we've got" sampling of a wafer. Normally data are intended to be reviewed and discarded. Once the dialog is closed by clicking OK, the data cannot be recovered except by repeating the measurement. Nevertheless, several tools are provided to save QuikLook measured data provided the tools are used before the dialog is closed. The Export button opens a dialog that allows the data to be stored to a Text file, stored to an Excel file or printed. This process is described in detail below. Another option is to Check the Create a DataSet control before closing the dialog. With this option enabled, when the dialog is close, the DataSet creation process is initiated. Data may either be stored to a new DataSet, or appended to a DataSet that is open and whose tab is selected in the DataSet explorer. The dialog of Figure f.1.2 appears in which the choice is made. Figure f.1.2 - Send QuikLook Data to a New or Existing DataSet. If the user opts to store data to a new DataSet, the New DataSet dialog appears into which a DataSet name, file name and file path, comments and user's initials are entered. If the dialog is Canceled, the DataSet is not created and all data are lost. If OK is pressed, the DataSet is created and opened. 62 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.1.3 - DataSet Creation Dialog. The new DataSet will have the single C/V Task, configured as it was in QuikLook as the sole Task in the Current Test Definition. (The CTD is named as part of the DataSet creation process. A single Executed Test Definition will be placed in the DataSet Archive with the C/V Task recorded along with the data that were measured during the QuikLook execution. The DataSet is normal in every regard. The Task can be reexecuted as the CTD. The CTD can be updated from the Editor and all subsequent executions will be stored to the Archive. Figure f.1.4 - New DataSet Created from C/V QuikLook Execution. 63 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. f.2 - Archive Regraph As with all Tasks, the C/V measurement is recalled from a DataSet Archive by browsing to the measurement in the Archive portion of the tree in the DataSet tab of the DataSet Explorer. Double-click on the Task in the Tab to open the configuration dialog. Figure f.2.1 - Access the C/V Data in the DataSet Archive. 64 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.2.2 - C/V Configuration Dialog Recalled from the DataSet Archive. The configuration dialog is opened for review. Most all controls are disabled. Adjust Mux in a Loop and Adjust Parameters in a Loop are enabled so their subdialogs can be opened for review. Those dialogs' controls are likewise disabled. Help is available. Cancel/Plot is active to allow the dialog to be closed and the Archive Regraph to continue. External Amplifier radio buttons are enabled because they cannot be disabled. Once the configuration dialog is closed, a second dialog opens to allow the plot to be configured. The dialog is identical to the QuikLook Plot page except that the comments are not present here. See QuikLook Plotting for details regarding the dialog. 65 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.2.3 - Configure C/V Archive Regraph Plot Titles and Filters. Once the plot is configured and the dialog closed, the Archived data are displayed in the standard QuikLook Response dialog. The only difference between this display and the QuikLook display is that Create a DataSet is disabled. 66 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.2.4 - C/V Data Recalled from a DataSet Archive. f.3 - Data Exporting Once the QuikLook Response dialog is displayed, whether it was created by QuikLook execution or by Archive Regraph, the displayed data can be exported out of Vision into a variety of formats that may be more suitable to the user. Note that the actual exporting occurs once the QuikLook Response dialog is closed. Data can be exported to one of five targets: y Printer - Pre-formatted text is sent to the when the configuration dialog is closed. Before printing a printer setup dialog will appear, allowing printer options to be adjusted. 67 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.3.1 - Standard Windows Printer Configuration Dialog. y y y Text File - Selecting this option enables the ">>" button. Clicking this button will open a standard browser dialog in which a filename and path must be selected. If the file already exists, the output will be appended to existing text. An output filename must be specified for this export. Excel - Selecting this option enables the ">>" button. Clicking this button will open a standard browser dialog in which a filename and path may be selected. Specifying a filename is optional. However, if specified, a unique filename/file path must be created or an overwrite situation will occur. Data are not appended to existing files. When the configuration dialog is closed, the Excel program will be started and a spread sheet created. When Excel is closed, the data will be written to the specified filename, or the user will be prompted to save if the file is not specified. Office '97 must be loaded for this option. Office is not provided with the tester or Vision software. Utilities to write to Office 2000 are not yet available. Word - Selecting this option enables the >> (browser) button. Clicking this button will open a standard browser dialog in which a file name and path may be selected. Specifying a file name is optional. Word exporting can only be performed during an Archive Regraph operation. The Print/Export Filter cannot be associated with a Task and export to Word. Long-duration Tasks cannot export to Word during execution. The Word program will be opened and written when the regraph dialogs have been closed. If a new file name is specified, the document will be saved immediately. Word export depends on two template files - "Tem68 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. y plate.doc" and "Template2.doc"- located in "C:\DataSets". These are blank Word files. Template.doc is in portrait orientation with tabs at 1", 2.5", and 4". Template2.doc is in landscape orientation with tabs at 1", 2.5", 4" and 6". Both pages are set to Times New Roman 12 pt font. Word export output is formatted to align properly with these settings. Care must be taken not to overwrite the templates. If no file name is specified, the user will be prompted to save the documents when closed. If the documents are saved, the template file will be overwritten. In this event, the file should be renamed appropriately and a new template file created with the specifications given above. Office '97 must be loaded for this option. Office is not provided with the tester or Vision software. Utilities to write to Office 2000 are not yet available. The Word export option has been added as of Version 3.1.0. Samples using measured data are not yet available. "Screen Dump" - Selecting this option will send a synthetic facsimile of the data results dialog to the printer. A printer configuration dialog will appear. The "Advanced" option on this dialog should be used to set the format to Landscape. This option is not yet available for C/V. The Figures below show first the Export configuration dialog in which the "Export Text" option is selected and the browser button enable. Second is shown the browser dialog. Figure f.3.2 - Export Configuration Dialog. 69 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.3.3 - Standard Windows File Browser. f.4 - Export Setup Name Select Option Type List Box Browse Button (">>") Button Filename Text Default "Print" Description Select between the Print, Export Text, Export Word and Export Excel options. Export Word is not yet available. This control enables the browser button for all selections except the "Print" option. Unpressed This control is enabled for all export options except "Print". For the remaining options, this control must be selected. The browser dialog will appear where a path and filename must be specified for the export output. "" This control is always disabled and cannot be used to specify the filename or path for Text, Word or Excel export. Once the browser is used to selected a path and filename, those will be displayed in this control for review. Note that a path and filename MUST be specified for all but the "Print" and "Screen Dump" export option. f.5 - Export Samples y Text File Sample - The two figures below show partial views of a sample C/V Text Export file. The views are complete enough to present the entire file format. 70 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.5.1 - C/V Task Text Export File Format - Upper Portion. 71 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.5.2 - C/V Task Text Export File Format - Lower Portion. y Excel File Sample - These two figures show a partial view of the C/V Task Excel export output format. The views are complete enough to represent the entire output format. 72 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.5.3 - C/V Task Excel Export Output Format - Upper Portion. 73 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. Figure f.5.4 - C/V Task Excel Export Output Format - Lower Portion. 74 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License. g - Change and Version Record Version 3.0.0 - 21 November 2001 1. Inserted a Custom Amp radio button into the Voltage Range control. Added code to handle this selection. 21 November 2001. SPC. 2. Set the Task to Version 3.0.0 for development of the next release. 21 November 2001. SPC. 3. Added a Sensor Impedance control to the Sensor options. Adjusted the measured Sensor value by this term. 23 November 2001. SPC. 4. Added a Start at Last Amp Level control and handled its selection. 23 November 2001. SPC. 5. Made adjustment of the Drive/Return Channel/Port controls more dynamic as Adjust Mux in a Loop is selected and deselected. 5 December 2001. SPC. 6. Eliminated several User Variables to make the list less cluttered. No functionality was lost. Values eliminated are noted in the table below. 10 December 2001. SPC. Version 3.1.0 - 14 March 2002 1. Set to Version 3.1.0 for release - 14 March 2002 - SPC. 2. Initial Word Export feature was added. 28 March 2002 - SPC. 3. Task has been removed from the Library and QuikLook Menu. 03 April 2002 SPC. 75 Last Topic Update - 4/25/06 This work is licensed under a Creative Commons AttributionNonCommercial-ShareAlike 2.5 License.