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CAPTURE® Version History

Version 5.6.4 (September 2017):

Radon Inspection Reports may now indicate the Action Level on the included graph image. The Action Level is represented by a red horizontal line extending across the width of the graph.

It is now possible to include comments in Radon Inspection Reports. Comments are printed under the report summary, immediately above the graph image.

The formatting of Radon Inspection Report content has been modified to make better use of the available page space. The resolution of the included graph image has been increased by 50%, from 144 pixels per inch to 216 pixels per inch.

The Radon Inspection Report configuration window now includes an expanded set of options for selecting which records to export. The available choices are Records Selected on Graph, All Runs, Last Run, and Specific Run.

The operating mode of a RAD7 can now be reliably determined when the Flags byte indicates that it is set to WAT mode while not Sniffing. Previously this information was not always calculated accurately.

CAPTURE no longer reports an error when attempting to observe the Thoron sensitivity of a record in which Thoron is enabled but no accompanying printer output is available and the RAD7's sensitivity can not be obtained from available device data.

The data entry fields in the RAD7 Profile Editor are now automatically updated to reflect sensitivity and spill factor information obtained from RAD7s. However this behavior can be overridden by entering custom sensitivity values and clicking the "Lock CB Spill Factor" checkbox in the Profile Editor.

When new RAD7 Profiles are generated, their sensitivity and spill factor values are now automatically assigned based on the available RAD7 device data. Likewise the sensitivity and spill factor values of existing RAD7 Profiles are now updated when new information become available, as long as those values have not been locked in the RAD7 Profile Editor.

The Cumulative Spectrum Window is now called the Spectrum Window. Its title excludes the word 'Cumulative' unless the associated RAD7 is capable of transferring the spectrum for the entire latest run, rather than just the current cycle's spectrum. This capability is dependent on the RAD7's firmware and RADLINK version.


Version 5.6.3 (August 2017):

A bug affecting the reported radon concentrations in RAD H2O data has been fixed. This bug was introduced in CAPTURE version 5.6.

CAPTURE can now reliably determine whether a RAD7 data record was recorded in Wat-40 mode or Wat-250 mode without having to make estimates based on the observed RAD7 sensitivity. Certain NORMAL and SNIFF mode records are no longer misidentified as WAT mode records.

CAPTURE can now determine whether Thoron mode was active in a RAD7 data record, even if printer data is not present.

The visibility of the Selection Slope Line can now be set to an intermediate state, in which the line only appears if the selection contains a series of data points that are relatively evenly distributed along the graph's time scale. This prevents the slope line from appearing when a selection spans multiple unrelated data runs.

The Selection Slope Line is now reset when scrolling a graph using the scroll bars. The line and associated label are now confined to the graph content region, instead of being allowed to enter the bottom margin area.

The R7CDT file format has been streamlined to avoid repeating raw RAD7 output within data tags used to store printer output.

CAPTURE now displays a warning when a RAD7 record set contains records with unreasonable dates.

Double-clicking on a graph and then clicking again no longer causes the graph to zoom in and then immediately zoom back out.

Radon data graphs can now accommodate a wider range of record dates, up to 100 years.

The spacing of graph timescale labels has been improved at particular graph zoom levels. The graph timescale pattern indicating the AM/PM intervals along the horizontal axis now looks correct when viewing a very wide range of data on a high resolution display.

Deprecated controls have been removed from the Alerts panel in the Preferences Window.


Version 5.6.2 (May 2017):

When exporting Cumulative Spectrum data, it is now possible to specify whether to include the Channel Number, Energy Levels, and/or Window ID in the exported data. It is also possible to specify whether the exported fields are separated by Tab or Comma characters. In addition, column headings are now optional. The exported data may now be written to a file (either .txt or .csv format), or simply copied to the clipboard.

The Cumulative Spectrum Window is now a standard document window instead of a floating window, so it no longer necessarily overlaps and obscures other on-screen items. The window may be accessed using a menu bar command at any time, provided a RAD7 is present.

Cumulative Spectrum Window data is now reloaded only when necessary, making the program more responsive when switching between different RAD7s.

The Selection Slope Line now automatically appears at the proper angle based on a linear regression algorithm accounting for the locations of each selected data point. The endpoints of the Selection Slope Line may still be dragged manually to modify its slope if desired. A manually adjusted Selection Slope Line now appears in red to indicate that changes have been made.

The Selection Slope Line and its associated statistics may now only appear if the selection contains visible Radon In Air, Radon In Water, Thoron In Air, or Thoron In Water data points. The slope expression is labeled with 'radon' or 'thoron' based on the element scale used.

When the Selection Slope Line is reset, it now snaps to the slope of the primary visible graph line, which may be either Radon In Air, Radon In Water, Thoron In Air, or Thoron In Water. Previously the default Slope Line position was always based on the Radon In Air graph data, even if the corresponding graph line was not visible.

Chart Recorder logs are now saved in a more sophisticated format which includes RAD7 device data, run and cycle numbers, and other information. These logs take up somewhat more space on disk than the simpler 'raw' data logs which were recorded previously.

When viewing a RAD H2O data run on a graph also containing data measured without the use of a RAD H2O, the graph no longer displays Radon In Air data points for the RAD H2O run.

The RAD7 Group Configuration menu command is now fully functional. This command did not function properly in recent releases.

Thoron related graph statistics no longer appear in the Graph Window's Statistics Panel if thoron data points are not visible on the graph. In cases where all thoron data is of questionable validity, these statistics now appear only if the user has enabled the thoron graph line and opted to display the questionable data.

The reported thoron averages for the entire data range and for the selected region now pertain only to the visible thoron points. Points that are hidden due to their questionable validity are excluded from the calculated averages.

If a RAD7 data file is opened and a Graph Window is already present containing the same file with unsaved changes, the contents of the window are no longer reset to the content of the file on disk.

The Save Graph Picture command now works properly on Windows systems when the Graph Label Scale is left unchanged at 1x. Previously the program failed to export images on Windows systems until the Graph Label Scale slider was changed.

The average radon and thoron concentrations reported at the top of the Graph Window are now stated more succinctly, allowing them to fit on smaller windows.

A user interface glitch has been corrected in the Windows version of the dialog box that appears when an update is available.

ersion 5.6.1 (May 2017):

CAPTURE now consumes less CPU power while idle. Previously the Main Window used processing power unnecessarily because it refreshed repeatedly even when nothing was happening.

When exporting Cumulative Spectrum data, each line is now labeled with a Channel Number, Energy Levels, and a Window ID. Items are separated by Tab characters, so they will appear in separate fields when pasted into a spreadsheet.

The Cumulative Spectrum now renders properly on HiDPI/Retina displays. Previously the spectrum content was incorrectly sized and blurred on high resolution displays.

The Save Graph Picture command now works properly. This command stopped working in CAPTURE version 5.6.

The formatting of the sensitivity unit labels in the Sensitivity Unit Converter Window has been corrected.

Version 5.6 (April 2017):

CAPTURE now supports HiDPI ("Retina") displays on Windows and macOS. All text and graph images take advantage of high resolution displays, with four times greater pixel density.

When saving a graph picture, it is now possible to choose from between three preset image sizes: Small (800 x 600 pixels), Large (1600 x 1200 pixels), and Graph Window Size. Large graph images use a default label scale of 2x for added clarity.

Humidity Correction, Forced SNIFF Mode, and BA Spill Correction may now be applied to the built-in sample RAD7 data files.

Humidity Correction may now be applied to RAD H2O radon in water data. In the previous version Humidity Correction only had an effect if the Radon Measurement Method was set to Radon In Air, RAD AQUA, or Water Probe.

Custom RAD7 Profiles may now be applied to RAD H2O radon in water data. Previously the user-specified sensitivities in custom RAD7 Profiles had no visible effect on RAD H2O data recorded using WAT250 or WAT-40 protocols.

When viewing RAD H2O radon in water data, the Radon In Air graph line is no longer visible. Corresponding Radon In Air statistics are also hidden.

When a new version of CAPTURE is available, the latest changes to the program are now listed in the Update Available Dialog.

When exporting column-based RAD7 data to a text file or to the clipboard, entries in the Units Byte column are no longer followed by a premature line ending. Data will now be formatted properly when viewed in a spreadsheet application.

An alert icon now appears if a RAD7's clock is set to the wrong time of day. Previously the alert only appeared if the RAD7's clock was set to the wrong day entirely.

When Chart Recorder data has been obtained but is found to contain problems that prevent it from being displayed, an explanatory message now appears along with a button for viewing a detailed list of errors in the data set.

The Graph Statistics Panel now devotes more space to any warning messages related to the data point nearest to the mouse cursor.

CAPTURE now checks for updates more successfully over slow Internet connections.

Version 5.5.5 (February 2017):

The Durridge CAPTURE Preferences file is now written to disk properly when the program exits for the first time. A bug was introduced in CAPTURE version 5.5.4 that prevented the preferences data from being written (but allowed the data to be re-written).

Version 5.5.4 (February 2017):

If the text of a RAD7 Data File includes a comment with an opening tag but no closing tag, or if the closing tag comes before the opening tag, CAPTURE no longer hangs while attempting to open the file.

The Meaningful Thoron Threshold is no longer reported as zero for any records with no thoron counts. This resolves a bug that was introduced in version 5.5.3.

RAD7 data files containing records from prior to the year 2000 are now interpreted properly.

The program no longer has problems parsing certain figures expressed using scientific notation.

The RADLINK disabling procedure now works properly on RAD7s with a variety of different firmware versions.

The online CAPTURE Help is now stored in a different location for each version of CAPTURE.

CAPTURE Version 5.5.4 is intended to be the final Windows XP compatible version, and in the future it will be offered in a standalone edition as an option, without automatic updates.

Version 5.5.3 (January 2017):

A new Edit menu command, Snap Selection To Nearest Runs, makes it possible to quickly select all of the run or runs containing the selected records. If no records are selected, this command selects the run containing the data point nearest to the cursor. Once the selection has been snapped to the appropriate runs(s), the graph window zooms in or out to show only the selected data.

The program is no longer likely to crash when the application error dialog box appears and the Do Not Show This Message In The Future button is clicked. After clicking this button, redundant error messages will no longer be recorded in the Program Log File, preventing disk space from being wasted.

When the program reports that a data file does not contain any valid records and the user clicks the Show Details button, a program error no longer occurs. Instead a window appears listing each problem with the data set. A maximum of 1000 items appear in this list, even if the data file is afflicted with more than 1000 problems.

The program now evaluates large data files and determines whether they can be parsed more quickly, particularly if the file name extension is known to be unsupported, for example if it is a .JPG or .DOCX file.

When right-clicking on a graph display or Chart Recorder surface for the first time, all of the available contextual menu items are now enabled. Previously it was necessary to right-click twice before certain commands became enabled.

When configuring Run Parameters, relevant error messages are now displayed in a streamlined version of the Error Message Dialog. For example if the Radon Measurement Method is set to Big Bottle System and the data was recorded in a protocol that is not compatible with that system, an alert message will appear explaining the problem.

It is now possible to select multiple RAD7 data files using the Open dialog box when graphing and combining data.

The Export Cleaned Up Data button is now enabled in the Error Message Dialog only if one or more data records were unable to be parsed.

When humidity correction is enabled on a graph, the Meaningful Thoron Threshold is now affected to the same degree as the thoron concentration.

The average Relative Humidity of a selection is now reported in the Graph Statistics panel even if the Relative Humidity graph line is hidden.

The Statistics panel now displays a "File Created By" label plus the name and version number of the program used to create the data file. This replaces the "CAPTURE Version" label and a corresponding version number. This allows the program to indicate when a data file was created using a different software program.

The CAPTURE documentation is now available exclusively via the Durridge website, ensuring that the Show CAPTURE Help menu command works reliably on macOS.

If the application is closed immediately after launching, it no longer records an empty preferences file to disk.

It is no longer possible to rename a RAD7 or DRYSTIK that was added manually until after a connection has been established, because doing so caused the program to crash. For the same reason it is no longer possible to connect to a RAD7 or DRYSTIK until a serial port has been selected.

Version 5.5.2 (August 2016):

It is now possible to download a user-specified range of RAD7 data runs, in addition to all runs, a single run, or the latest run.

The Combine RAD7 Data Files window now supports drag and drop. RAD7 data files or entire folders full of data files may be dragged into the window's list box and combined.

The system for creating Run Summary Reports has been redesigned, resulting in improved report formatting and improved handling of situations that previously produced errors.

If a record in a RAD7 data file is found to contain parameters that are inconsistent with the parameters of the other records in the same run, the problem is resolved and the user is alerted.

CAPTURE application log files and Chart Recorder log files are now stored in \Users\UserName\AppData\Roaming\ on Windows, and in /Users/UserName/Library/Application Support on the Mac. The application log files are now organized into folders by year. A different log file is created for each day the program is in use. Previously a separate file was established for each session. Files now contain more extensive headers. Log files older than one month are no longer purged.

CAPTURE now checks to see whether a data file has an invalid file name extension before attempting to open it. This prevents the program from stalling while attempting to parse large unsupported files such as Photoshop images or PowerPoint documents.

A menu command has been added for showing the CAPTURE program logs.

The CAPTURE Preferences file is now titled Durridge CAPTURE Preferences.txt. Previously this file was titled CAPTURE.ini.

The formula for determining which graph points to connect with line segments now produces better results when run numbers are out of chronological order.

When initiating a manual RAD7 data download operation, CAPTURE now times out after 60 seconds. Previously there was a 30 second limit before timeout.

Exported Run Summaries files that are formatted using comma delineation now use the .csv file name extension. This makes it easier to open them directly in spreadsheet programs.

Version 5.5.1 (May 2016):

When a RAD7's status is obtained, CAPTURE now checks to see if the RAD7 is configured to report radon concentrations using an unsupported concentration unit. If necessary the concentration unit is then changed to pCi/L , and the change is reported in the Application Log. This ensures that concentrations and sensitivities can be obtained reliably.

CB Spill Factor values may now be obtained from the RAD7 if the device has the latest version of RADLINK installed. In these cases is no longer necessary to manually specify the RAD7's calibrated CB Spill Factor value in the Preferences Window's RAD7 Profiles Editor. If this value is entered manually, it may be either "locked", preventing it from being overruled by information obtained from the RAD7, or left "unlocked", allowing it to be overruled in cases where such information is able to be obtained from the device.

CAPTURE now supports Temperature Data Files in which the year, month, and day values of date expressions are separated by dash characters. Previously only slash characters were supported as year, month, and day separators, and this created compatibility problems with more recent versions of the EasyLog USB software.

A new built-in Temperature Data Profile labeled "Lascar EasyLog USB YMD" has been established to accommodate the latest Lascar EasyLog USB data format, in which dates are expressed in the Year-Month-Day format. Earlier versions of the Lascar software are supported by the existing "Lascar EasyLog USB DMY" profile.

Built-in Temperature Data Profiles may no longer be edited or removed. When CAPTURE launches, any built-in profiles that were previously deleted will be restored automatically.

A new Tools Menu command can be used to shift the dates of a Temperature Data File and then re-save the file in any of CAPTURE's built-in temperature data formats.

Temperature Data Files expressing times using a 12-hour clock format are now parsed successfully. Previously times between 12:00 AM and 1:00 AM were interpreted as occurring between 12:00 PM and 1:00 PM.

Exported RAD7 printer output now contains accurate temperature values when expressed in the Fahrenheit unit.

When necessary, thoron sensitivities are now calculated by analyzing the content of RAD7 printer output data. This is only possible when the Thoron option is enabled in the Setup menu.

When thoron concentrations are calculated based on estimated RAD7 sensitivity values, a notification now appears, along with recommendations on how to achieve more accurate thoron readings.

Sensitivities derived from RAD7 Profiles are now identified as such in the Graph Statistics Panel.

If a RAD7's humidity sensor is faulty, humidity readings are now reported as "[Unknown]" in the Graph Statistics panel.

CAPTURE's built-in sample RAD7 data files may now be opened using a command in the File menu. Water temperature data will be made available for each sample data set automatically when the Run Parameters Dialog is opened and the Radon Measurement Method is set to a radon in water accessory such as the RAD AQUA.

When opening a graph, the Radon Measurement Method is now automatically set to RAD H2O for any runs that are found to have been recorded in WAT mode.

Separate Radon in Air and Radon in Water graph lines may now be viewed for RAD H2O data. The Radon in Air concentrations are calculated based on the RAD7's known or assumed SNIFF sensitivity, while the Radon in Water graph line remains based on the pre-computed concentration figures provided by the RAD7.

Radon in Water graph lines now appear automatically if Radon in Water data is present, even if the Radon in Water checkbox was unchecked during the previous session. This is intended to prevent users from mistaking Radon in Air graph data for Radon in Water data.

When Chart Recorder data is logged to disk, it is now saved in either the R7CDT format or the R7RAW format, based on the user's choice. Previously R7CDT data could only be saved if R7RAW data was being saved as well, but this is approach is no longer necessary as a means of preserving the RAD7's raw data output because the raw data content is present within the R7CDT file.

Version 5.5 (March 2016):

CAPTURE now includes Save and Save As commands in the File menu. The Save command becomes available when Run Parameters are changed. When a graph window containing modified data is closed, the user is prompted to save the changes. Saved R7CDT data files now store graph parameters that were previously maintained in the application preferences.

When a Graph Window opens, the top panel of the window now immediately displays the average concentration of the radon in the data set. It no longer contains a prompt asking the user to specify the Radon Measurement Method.

Radon data parameters may now be applied on a per-run basis, rather than being applied to an entire data set, and therefore the Graph Parameters Dialog is now known as the Run Parameters Dialog. An individual run may be selected and assigned a Radon Measurement Method of either Radon In Air, RAD AQUA, RAD H2O, Water Probe, or Big Bottle System. Clickable labels now appear over each run on the graph, providing easy access to the controls for editing the corresponding Run Parameters.

RAD7 sensitivities are now obtained using the Special GetCal command, which is supported in newer versions of RADLINK. These sensitivities are saved in the RAD7 data file and allow for the precise determination of radon and thoron concentrations. When these sensitivities are not able to be retrieved, CAPTURE calculates them by analyzing other information within the file.

RAD7 Device Data and configuration information is now stored on a per-record basis, rather than a per-file basis. This makes it possible for CAPTURE to retain device information during Export and Combine operations.

If CAPTURE detects that a RAD7 is configured to express concentration values using incompatible concentrations units (CPM or Total Counts), the user is now prompted to switch the RAD7 to a compatible unit before downloading data. Additionally, the RAD7 Units Setup dialog box no longer permits the user to select an incompatible concentration unit type.

If a RAD7 data file contains concentration values stored in an incompatible unit type and the RAD7's sensitivity figures are unknown, the user is prompted to specify these sensitivity figures so that concentration values can be calculated. Once this calculation has been done, the data file can then be saved and subsequently reopened without incident.

RADLINK may now be installed and removed using the RADLINK Operations command, which is available in the Tools menu. RADLINK versions 253, 301, and 311 are supported. This feature allows users to restore RADLINK if it has been lost, and to upgrade a RAD7 to a newer version of RADLINK, which is required to obtain comprehensive device sensitivity data.

The Tools Menu now contains an option for shifting the content of a RAD7 Data File by a certain time interval. Each data record's time stamp is shifted forwards or backwards by a specified amount. The modified RAD7 record set is exported as a new RAD7 Data File.

The Tools Menu now contains a Concentration Unit Converter and a Sensitivity Unit Converter. These are used to convert user-supplied concentration and sensitivity values between four available units: Bq/L, Bq/m3, dpm/L, and pCi/L.

In the Chart Recorder, when viewing data from a RAD7 Group consisting of multiple RAD7s, the devices must now be synchronized to within one quarter of their common Cycle Time in order for their respective data points to be combined and averaged.

If a RAD7's clock is incorrect, the right edge of the timeline on the Chart Recorder will now show the RAD7's reported date and time, rather than the current actual date and time. This prevents the lines extending from the most recent data points to the pen tips from advancing in the wrong direction.

The total number of counts associated with the data point nearest to the cursor is now reported in the Graph Statistics panel.

The Graph Statistics panel now displays an alert icon next to the RAD7 calibration date if the RAD7 had not been calibrated within one year of the measurement. Similarly an alert icon appears if RADLINK needs to be updated or if the RAD7's date and time settings are incorrect.

Shaded regions indicating excessive High Voltage Duty Cycle readings now start at the beginning of the affected cycle, rather than at the end of the preceding cycle. This prevents large shaded regions from appearing between runs, except where appropriate.

Clicking the Forced SNIFF Mode, Correct For Humidity, or Correct For B to A Spill checkbox now causes the highlighted selection average and Slope Line to automatically snap to the appropriate position.

When thoron uncertainty values are unknown, the data is now written to disk using the proper notation format, preventing information from being lost.

If the Check for Updates option is disabled in the Preferences window, CAPTURE will no longer display a warning message when Internet access is unavailable.

In the Run Configurations Dialog, the specified Temperature Delay is now applied only if the Water Temperature Data Source is set to Temperature Data File.

The formatting of printed graphs including statistics has been improved, particularly for graphs printed in a landscape orientation.

Machine-generated foreign language translations have been removed from CAPTURE. Grammatically correct English content will appear instead. It is no longer possible to use the program's Preferences Window to specify whether to enable foreign language translations. If the system is configured to display Chinese characters, these will appear as they did previously, since they have been translated by hand.

RAD7 Data files may now include Special SprOn and Special SprOff responses in addition to the expected content. These portions are stripped out during parsing. This allows CAPTURE to read data files assembled outside of CAPTURE using typical serial port output.

The macOS version of CAPTURE is now code-signed, so computers with default Gatekeeper security settings will no longer refuse to launch the application.

Version 5.4.7 (January 2016):

CAPTURE now supports the installation of RADLINK version 311.

Version 5.4.6 (October 2015):

CAPTURE now includes a Selection Slope visualization tool. When a Graph Window is visible and the Show Selection Slope checkbox is checked, a Selection Slope line will appear, spanning the distance between the Selection Bars. If the endpoints of the Selection Slope Line are dragged, the reported slope value is updated in the Statistics Panel. This value is expressed as a change in concentration per unit of time, for example "0.803 (pCi/L)/Hr". The time unit may be specified by the user, or it may be set automatically based on the selection range.

The appearance of printed graph images has been improved. The graph is now displayed at a higher resolution and labels are rendered in a larger font for improved readability. The statistics that appear under the printed graph image now include information on the Selection Slope Line, Radon in Water, Thoron, and Thoron in Water, but only if the associated lines are are present on the graph image.

The system for rendering the graph legend has been optimized, resulting in significant performance gains, particularly on Windows, and particularly when multiple graph lines are visible.

The graph's grid line spacing now changes at more frequent and regular intervals as the graph is zoomed in and out, ensuring that a reasonable number of background grid lines appear at all zoom ratios.

The placement of graph elements, including axes, legends, and labels has been improved, particularly when the graph image is rendered using a nonstandard scale factor, as when printing or saving the image to disk.

When the Radon Measurement Method for a data set is set to Radon in Air, the Radon in Air graph line is now made visible, and the Radon in Water graph line is now disabled.

If a value of one million or greater appears in a text field in the Graph Controls Window, it will use the letter M to represent Millions. Previously such non-numeric characters were ignored when parsing user-supplied values. Now this type of notation is interpreted correctly.

Custom graph concentration scales may now be set to no higher than 100 million units, and no lower than -100 million units. This applies to the Radon, Thoron, Temperature and Humidity graph scales.

When user-specified numeric values are written to the program's Preferences file, the positive or negative nature of the value is now recorded properly. Previously when negative values were used to specify graph scales and water temperature offsets they were converted to positive values when saving.

If a RAD7 loses its calibration settings, CAPTURE now warns the user that the device's data is unreliable and that the RAD7 should be returned the DURRIDGE for service.

It is now possible to specify the desired graph label scale when exporting a graph image. The chosen scale dictates the minimum allowable image dimensions. The PNG file name extension is now added to the desired file name under all circumstances.

When opening a Graph Window, it now appears fully on-screen, even if the most recently viewed graph window was positioned partially off-screen.

The system for cascading multiple Graph Windows has been improved on Windows OS, with respect to each Graph Window's title bar and menu bar height.

Version 5.4.5 (August 2015):

A Reset Zoom Level command has been added to the Graph Window. This command zooms the graph all the way out. It can be accessed using the keyboard shortcut Control-0 on Windows, and Command-0 on Mac OS.

Support for the Big Bottle System has been improved. It is now possible to select preset configurations based on Revision C of the Aerator Cap design. This applies to both the Glass Jug System and the Soda Bottle System.

The Statistics Panel now contains additional information about the RAD7 data file, including the CAPTURE version number used to download the data, the platform used (Windows or Mac OS X), and the file creation date.

On Mac OS X it is now possible to drag any file type onto the CAPTURE application icon, and the program will attempt to open it. Previously only .R7cdt, .r7raw, .cdt, and .raw files could be opened in this manner.

Administrative tools have been developed for more user-friendly thoron calibration procedures.

RAD7 Data file icons now appear at high resolution on both Mac OS X and Windows.

Version 5.4.4 (June 2015):

CAPTURE no longer freezes when displaying graphs on systems in which the date settings have been configured in such a way that the day of the week is excluded from the formatted expression of the date. This was a long-standing bug that could lead to infinite loops while drawing the grid lines across the graph background, but only with certain zoom settings. It affected standard graph windows as well as the Chart Recorder, most frequently in Windows 8.

A Tools menu has been added to the menu bar. It provides access to new utilities such as the RAD H2O Radon In Water Calculator, and the Terminal Window. The RAD H2O Radon In Water Calculator computes Radon In Water concentrations based on user-supplied Radon In Air and Water Temperature Values. The Terminal Window provides an interface for manually issuing serial commands to any device, including RAD7s and DRYSTIKs.

CAPTURE is no longer localized into German, Arabic, and Hebrew. German text did not fit well in the program's user interface (luckily the majority of German speakers are literate in English.) Arabic and Hebrew texts produced problems related to the right-to-left nature of these languages, and suffered from issues with string manipulation.

Texts in the remaining languages have been shortened where necessary to conform to the spatial requirements of the user interface. This affected Spanish, French, Italian, Norwegian, and Swedish.

The Chart Recorder zoom level is no longer reset when the RAD7 status is refreshed.

Version 5.4.3 (May 2015):

Exported Counts per Minute values for windows B, C, D, and O are now accurate.

The Chart Recorder no longer becomes stuck in an endless refreshing cycle when a RAD7's runs were recorded out of chronological order.

The reliability of RADLINK related utility functions has been improved.

Version 5.4.2 (May 2015):

Total Counts and Counts Per Minute fields for individual Spectrum Windows (A, B, C, D, and Other) may now be included in exported RAD7 data.

Downloaded R7CDT data files containing incomplete printer output data or missing RAD7 identification information are now parsed more effectively. Any RAD7 device information such as the serial number and calibration date are now retrieved if available.

When printer output data is unavailable for some records, the user is notified of the issue.

Exporting column-based text data using comma delineation produces a .csv text file which is directly compatible with Excel and other software.

The Clock Setup dialog box now allows the desired year to be entered. This dialog box is accessed from within the Chart Recorder.

The Macintosh version of CAPTURE no longer crashes when right-clicking on a graph or chart.

When a dialog box appears on Windows OS, the most commonly used button is now assigned the focus, so that it can be triggered by pressing the Enter key.

Version 5.4.1 (January 2015):

CAPTURE now scans for devices more thoroughly at each appropriate serial port and baud rate.

When RAD7 data is downloaded, any errors in the data are once again reported properly. These error messages are not displayed when applying changes to graph configurations. Note that previous versions of CAPTURE will be unable to open files downloaded using CAPTURE 5.4.1.

R7RAW files may now contain comments, which start with /* and end with */. These comments were previously supported only in R7CDT files.

Downloaded RAD7 data is now saved in a format that retains any data errors so that the errors can be reported and accessed during future sessions. Such errors are removed only when data is manipulated through exporting or combining operations.

The user interface for installing and removing RADLINK has been improved, and potentially problematic operations are no longer supported. CAPTURE now supports operations involving the latest version of the RAD7 firmware.

CAPTURE now displays the hardware revision number in addition to the firmware version number for DRYSTIKs running firmware version 1.2.1 or newer.

DRYSTIK Firmware can now be updated successfully. This addresses a regression that was introduced in CAPTURE version 5.3.7.

The Download Latest Run feature now works correctly. This addresses a regression that was introduced in an earlier version of CAPTURE.

Problems have been addressed in the statistical figures that may be included when printing a graph image. These graph statistics are now visible on printouts by default.

Windows are restored to the same sizes and positions they were left in. Previously they could reappear in the wrong locations on the Windows OS, with the title bar off the top edge of the display.

When a device is detected, its icon now appears in the toolbar immediately and is automatically selected.

If a RAD7 data file is found to have been created using a newer version of CAPTURE than the one being used, the user is notified and encouraged to update CAPTURE to the latest version.

CAPTURE no longer creates RAD7 Profiles associated with the device serial number 0001.

Version 5.4 (December 2014):

The Mac OS version of CAPTURE is now a Cocoa application. This brings several advantages including improved performance, anti-aliased graph content, and windows that are resizable from all directions. In preparing CAPTURE for the Cocoa framework, several memory leaks and circular dependencies were identified and resolved.

After using the Graph Parameters Window to set the Radon Measurement Method to RAD AQUA, RAD H2O, Big Bottle System, or Water Probe, the Radon In Water graph line now automatically becomes visible.

Values written to the preferences are now expressed using higher precision, ensuring that close numbers are not treated as identical. This change resolves a problem in which the program did not differentiate between very similar dates and times.

When exporting a RAD7 data file containing combined data records, the exported records are now sorted chronologically, rather than by record ID number.

The Zoom Slider no longer produces erratic results. This addresses a problem that was introduced in CAPTURE 5.3.9.

When scrolling the graph or translating a selected region horizontally, the graph's Y axis scaling animation now runs for a particular amount of time, rather than for a particular number of frames, improving performance on slower computers.

RAD7 status refresh operations can now be safely interrupted by Download and Relay operations.

If the Main Window is suddenly closed while a RAD7 status is being refreshed, CAPTURE now cancels the status update more gracefully, informing the RAD7 that it should cease sending data.

TCP data transfers are now reported in the Log Window without visual glitches.

RAD7s are now listed in order by serial number in the toolbar and in the Log Window.

Version 5.3.9 (December 2014):

When Chart Recorder data is opened in a Graph Window, it is now possible to configure the graph, specifying the Radon Measurement Method and other parameters.

RAD7 connections are no longer as easily disrupted. When a RAD7 fails to respond correctly to a command, CAPTURE attempts to re-issue the command several times, at fixed intervals, before giving up and reporting that the connection has been lost.

Certain kinds of RAD7 records are no longer incorrectly identified as having been recorded in Thoron mode.

Terminology shown in the user interface has been changed for clarification; for example ‘Change Radon Source’ has been changed to ‘Specify Radon Measurement Method’.

Visual corruption no longer occurs on the graph after zooming in on a selection of RAD7 data, then bringing up the Graph Parameters dialog box.

Version 5.3.8 (December 2014):

Double-clicking on a RAD7 data file no longer brings up the Graph Parameters window and an error message no longer appears. This resolves an issue that was introduced in version 5.3.7.

Version 5.3.7 (November 2014):

The Graph Parameters configuration dialog no longer appears automatically when a graph is opened. Instead a more streamlined panel appears at the top of the Graph Window, stating that the radon source is currently set to "Radon in Air", and prompting the user to either confirm or change the radon source.

CAPTURE no longer attempts to calculate the SNIFF sensitivity when the Window D counts overwhelm the Window A counts. In these situations the default SNIFF Sensitivity value is used. This in turn affects the calculated Thoron Sensitivity, which is usually set to a certain portion of the SNIFF Sensitivity.

Records recorded in Thoron Mode are now identified as such by CAPTURE. This resolves a bug introduced in Version 5.3, in which thoron mode indicators in RAD7 Data files were not properly parsed.

If a RAD7 is overdue for calibration, it's toolbar is now marked with an alert symbol. The alert symbol also appears near the Calibration Date listing in the Graph Window's Statistics Panel.

The serial I/O code has been refined to prevent multiple occurrences of commands being sent to RAD7s unnecessarily.

Version 5.3.6 (October 2014):

CAPTURE no longer consumes excessive memory when the Main Window is left open for an extended period of time.

Toolbar icons are no longer prone to disappearing in the Windows version of CAPTURE.

Cumulative spectrum data may now be saved to a text file, using the Export Spectrum Data button in the Cumulative Spectrum Window.

The peaks in the Cumulative Spectrum Window are now rendered with greater precision.

The system for evaluating the count distributions between windows A,B,C,D, and O has been enhanced.

RAD7 software administration tools have been made more user-friendly.

Version 5.3.5 (September 2014):

After a point is plotted on the Chart Recorder, the pen is now kept level with the last reading until at least three new counts have been detected, or until the following cycle is at least one third of the way to completion. This reduces the occurrence of unreasonable concentration predictions.

The Chart Recorder new advances in real time, instead of only advancing in 5 minute intervals. (Scrolling will only be perceptible however if the cycle time is short and the chart view is fully zoomed in).

Chart Recorder data is now obtained immediately upon the completion of each cycle. This resolves a bug introduced in an earlier version of CAPTURE.

The Thoron and Thoron in Water pens are now shown on the Chart Recorder only if the RAD7 is currently in Thoron mode. Previously these pens were visible if any points already on the chart were recorded in Thoron mode.

The Chart Recorder’s Y axis scales now change dynamically based on the range of concentrations, temperatures, and humidity values within the currently visible data.

Data sets containing only one record can now be displayed on the Chart Recorder. Therefore a point now becomes visible as soon as the first cycle of a test has been completed.

The DRYSTIK status panel no longer confuses the Date of Manufacture and Lifetime Pump Usage values.

When a DRYSTIK is idle, CAPTURE now accurately reports the state of the DCC Output/Internal Pump switch. Previously the state of this switch was only properly reported while the DRYSTIK was live.

Version 5.3.4 (August 2014):

The DRYSTIK user interface now fits properly in the main window, even when the window is set to its smallest size.

Before rebooting a DRYSTIK or updating its firmware from within CAPTURE, the device is stopped. This speeds its reboot time and prevents the program from timing out while waiting for the DRYSTIK to respond.

On small displays, the Main Window is no longer positioned with its title bar above the top edge of the screen. Resolutions as low as 1024x768 are now properly supported.

The vertical scale of the Chart Recorder now accommodates radon, thoron, temperature, and humidity readings that are still in progress, and these figures are now reported immediately when the chart appears. White space no longer appears below the horizontal axis.

RAD7 connections are no longer lost in certain situations.

Version 5.3.3 (August 2014):

Problems that caused CAPTURE's user interface to become unresponsive while downloading RAD7 data on Windows have been resolved.

The Run Selection pop-up menu no longer reverts to its previous state when making a selection.

RAD7 detection now occurs more quickly and is less processor intensive. While a scan is occurring the program remains more responsive, and the associated progress bar provides a more accurate indication of how much time is remaining.

When a RAD7 operating at 1200 baud is detected, CAPTURE now offers to increase its speed to 9600 baud instead of to 19200 baud. The associated dialog box no longer reappears unnecessarily after rescanning for RAD7s.

The Download Data From All RAD7s command now works properly.

The Main Window can now be resized to fit on smaller laptop displays.

The appearance of the Chart Recorder button panel has been improved, particularly on Windows.

CAPTURE now checks online for DRYSTIK firmware updates instead of relying on an embedded file. Going forward, outdated versions of CAPTURE will still be able to install the latest version of the DRYSTIK firmware onto ADS-3 and ADS-3R devices.

Version 5.3.2 (August 2014):

The Export RAD7 Inspection Report feature now works properly.

When a graph opens, the selection bars are now positioned so as to encompass all the data points.

In the Graph Window, double-clicking will zoom the view in only if a subset of the data points are selected.

Stability improvements have been implemented in the Chart Recorder.

Multiple RAD7 data sets can now be successfully combined even if they are not being saved to disk.

The Show Data File command now reveals the location of the file associated with the current graph and also selects it in the Windows Explorer or Mac OS X Finder.

Changes have been made to the Mac OS X version of CAPTURE for future deployment as a Cocoa application.

Version 5.3.1 (July 2014):

RAD7 data downloading operations now proceed successfully even if the device's configuration settings have not yet been fully obtained. Previously downloads stalled if attempted immediately after the RAD7 was discovered, before the configuration information was available.

In the Big Bottle System configuration interface it is now possible to specify a custom value for the internal volume of an included DRYSTIK.

The algorithm used to calculate the uncertainty in the average of a selection of data points is now identified at the top of the graph window.

When a RAD7 is reconnected its main window configuration preferences are reset accordingly, causing any previously specified download destination to be blanked out. This ensures that RAD7 data is not downloaded to a file containing the name of a different device.

The option to relay RAD7 data to a remote computer now becomes available only after the device's full status has been obtained. This prevents relaying operations from interrupting necessary preliminary communications.

When connecting to a RAD7, its status information can now be obtained more rapidly, because fewer commands are issued instructing the device to redirect printer output to the serial port.

Version 5.3 (July 2014):

CAPTURE can now communicate with DRYSTIK models ADS-3 and ADS-3R. It is possible to monitor the status of a DRYSTIK, control its operations, and configure its user profiles. DRYSTIK firmware can also be updated from within CAPTURE. As with RAD7 communications, DRYSTIK communications may be relayed over a local network.

CAPTURE now remains fully responsive when RAD7 statuses are being retrieved. The revised status update procedure is considerably less CPU-intensive.

The sensitivity values displayed in the RAD7 Profile editor in the Preferences Window are now calculated based on the content of the front most graph window or chart recorder.

Upon completion of RAD7 serial operations that involve redirecting infrared printer output to the serial port, any ensuing output is now sent back to the printer. Previously CAPTURE only restored the printer operation if the RAD7 had been configured as such prior to the serial operation.

Device communication failures are now handled in an improved manner. When CAPTURE fails to receive an appropriate device response after four consecutive attempts, the connection is closed and the user is prompted to reenter the device's connection settings.

The Big Bottle System configuration interface now includes a control for selecting which DRYSTIK model is being used, if any, and the preview diagram is updated accordingly. DRYSTIKs using different NAFION tubing lengths contribute differently to the internal air volume of the overall apparatus, and this affects the calculated Radon In Water concentration values.

TCP network connections may now be monitored in the Log Window, under a new tab alongside the existing Application Log and Serial Ports tabs.

The Include Supplementary Data option has been removed. Supplementary data is now included automatically whenever a download procedure is initiated from a RAD7 capable of two-way communication.

Dial-up modem communication features have been removed due to underutilization.

Visual glitches affecting the Windows version of CAPTURE have been resolved.

Version 5.2.9 (April 2014):

Problems connecting to large numbers of RAD7s have been resolved.

CAPTURE can now more reliably communicate with RAD7s via a local area network.

RAD7 icons in the toolbar are now shown in the correct order according to serial number.

Version 5.2.8 (April 2014):

The RAD7 scanning process has been improved, allowing RAD7s operating at a variety of baud rates to be more reliably detected.

The system for reestablishing connections with existing RAD7s has been improved.

User interface elements and chart graphics in the Main Window are now refreshed as needed.

Version 5.2.7 (April 2014):

CAPTURE now scans for RAD7s using a new process designed to improve performance and reliability.

A bug has been fixed that caused raw RAD7 data to be written to disk repeatedly, creating unnecessarily large data files.

All RAD7 data lines are now included in chart recorder log files, even if they are not able to be parsed, making it easier for users to identify errors.

Several changes have been made to CAPTURE's code structure in preparation for future devices and newer compilers.

Visual glitches in the user interface have been resolved.

An issue which prevented files from being combined has been resolved.

Version 5.2.6 (March 2014):

Uncertainties are now calculated using the algorithm that was in place prior to version 5.2.5. The revised formula was determined to be incorrect.

Application stability has been improved on Windows.

Version 5.2.5 (March 2014):

CAPTURE now stores internal data in a more robust format, reducing the potential for errors when performing such operations as combining RAD7 record sets.

Uncertainties are now calculated properly when based on the scatter of points. Previously results were too great by a factor of two.

When zooming out of graphs, CAPTURE now renders data sets without graphical glitches.

Version 5.2.4 (February 2014):

Several improvements have been made in the analysis of Big Bottle System data, including the addition of a Brim-Full Water Loss property, as well as corrections in the logic used to determine whether data came from a RAD H2O involving WAT-250 or WAT-40 readings. Big Bottle System analysis can now be performed using files recorded in WAT mode, with the necessary SNIFF Sensitivity values being derived automatically.

Support for RADLINK version 3.0 has been added. In this version of RADLINK, the Special ComSpec command outputs spectrum data for the entire run, rather than just the current cycle.

A Cumulative Spectrum Window has been added. It contains a histogram displaying the results of the Special ComSpec command. Support is included for RAD7s containing both RADLINK 2.5 and 3.0.

Calculations requiring knowledge of the RAD7's internal volume are now performed with greater accuracy.

RAD7 commands may now be issued manually while status updates are underway.

Minor graphical and usability enhancements have been added, such as an alert icon appearing when downloaded data is to be saved over an existing file.

Version 5.2.3 (December 2013):

When reporting the uncertainty of a selection, large figures are no longer truncated.

The Graph Legend can now be positioned on any of the four corners of the Graph Window or Chart Recorder.

Version 5.2.2 (October 2013):

It is now possible to display a Meaningful Thoron Threshold region for water-based graph data. Previously the Meaningful Thoron Threshold applied only to Thoron in Air.

The Export Column Based Text operations now allow for the inclusion of Meaningful Thoron Threshold data for air and water.

The algorithm for computing the Meaningful Thoron Threshold has been refined.

Expressions of whole numeric values will no longer conclude with decimal points. This will make it easier for statistical analysis software programs to identify exported values as numeric content.

Exported column-based values now use the proper field delineator when C/A count ratios are included.

CAPTURE no longer issues duplicate error reports when downloading and graphing data.

Any RAD7 data that can not be parsed is no longer included in exported R7RAW or R7CDT data files. Problematic data is however saved to disk as it is being downloaded, so that it may be properly accessed.

Minor rendering problems have been resolved in the Chart Recorder display.

Version 5.2.1 (September 2013):

Reported thoron readings are now based on computed values, even when RAD7 printer output containing explicitly stated thoron concentrations is available. This makes it possible in all cases to correct thoron readings for known sensitivity and CB spill values.

Reported thoron uncertainties now more closely match those values seen on the RAD7 printer output. Greater uncertainties will be seen for low thoron concentrations.

A problem involving the prohibition of thoron sensitivity values of less than 0.1 cpm/(pCi/L) has been addressed. This limit is now scaled with respect to the concentration unit used, allowing data sets whose thoron concentrations are expressed in units other than pCi/L to accept reasonable changes to the thoron sensitivity.

The C:A Count Ratio is now properly reported for selections. Previously this was reported as the average of the C:A count ratios of the selected data points. Now this value is calculated as the ratio of the sum of all C counts to the sum of all A counts comprising the selection.

Uncertainty figures are no longer offered for C:A Count Ratios, and undefined ratios in which no A counts were recorded are now reported as "∞:1".

While listening for incoming commands to relay from a remote computer to a connected RAD7, CAPTURE now disables download operations and RAD7 status updates. Previously such operations could compromise the program's responsiveness to incoming commands.

CAPTURE now does a better job of determining whether records were likely recorded in GRAB mode, and uses this information to determine whether thoron data is valid and should be visible on a graph. (Records recorded in GRAB mode contain invalid thoron data.)

Version 5.2 (September 2013):

CAPTURE can now obtain water temperature data directly from a Lascar EL-USB-TC temperature logger while downloading RAD7 data or loading an existing RAD7 data file. This makes it faster and easier to display data from the RAD AQUA, Water Probe, and Big Bottle System. Once temperature logger data has been obtained, it may be saved to disk as a text file usable by CAPTURE and other applications. This feature is supported on Windows only.

Radon inspection reports may now be exported from CAPTURE. These reports are saved in HTML format and include graph images plus user-supplied information on site conditions and testing parameters. The visual content of the file is embedded directly inside the HTML. Since no separate image files are involved, the report has the benefit of portability typical of PDF files.

The Export RAD7 Data command now presents the option to include or exclude supplementary data, when such data is available. Previously it was not possible to exclude supplementary data when it was present in the file being graphed. Now that this is possible, any exported content can be made to adhere to the well documented formatting standard used by the RAD7 when it responds to Data Com or Special ComAll commands.

The calculation of radon concentration uncertainties has been improved, especially in cases where very few or no counts were recorded. These figures now match the output provided by the RAD7, even though they are calculated independently.

Records recorded in WAT40 or WAT250 modes now produce warnings when graphed using the Big Bottle System as the Radon Source.

The Big Bottle System graphics seen in the Open Data File dialog have been updated to show Durridge's new aerator design.

The logic used to calculate the minimum meaningful thoron threshold has been improved.

The Chart Recorder's Y axis now scales to accommodate the points in the selected View Range.

Version 5.1.2 - 5.1.5 (July 2013):

Exported Thoron in Water readings are now listed correctly. Previously Radon In Water readings were reported instead.

A bug which prevented RAD AQUA and Water Probe data from being properly loaded has been fixed. CAPTURE now displays Radon in Water data successfully.

RAD AQUA and Water Probe concentrations are once again listed accurately when humidity correction is applied.

A bug which caused RAD H2O data to be identified as radon in air data has been fixed. As a result CAPTURE now properly interprets data files that were recorded in WAT250 and WAT40 modes.

Version 5.1.1 (June 2013):

Radon concentration uncertainties are now calculated with respect to the fundamental source values provided from the RAD7, allowing for more accurate reporting of values corrected for factors such as humidity and B to A Spill. The calculation of thoron uncertainties is handled in the same fashion, with more accurate results.

It is now possible to install CAPTURE as an English-only application on Windows. When moving from a multilingual installation of CAPTURE to an English-only installation, it is necessary to first uninstall the existing version before running the latest CAPTURE installer.

CAPTURE now prompts the user to apply B to A Spill Correction only if doing so would produce a substantial difference in reported radon concentrations.

Version 5.1 (May 2013):

The system for managing RAD7 Profiles has been significantly improved. Now RAD7 Profiles may store NORMAL and SNIFF sensitivities, overriding the RAD7's calibrated sensitivity. Profiles are now divided into two groups: those obtained from RAD7s, and those created by the user.

The C/A count ratio is now displayed in the Properties panel and may also be exported as comma- or tab-delineated data.

CAPTURE now handles interruptions in RAD7 connectivity more gracefully, providing the opportunity to easily disconnect an unresponsive RAD7.

The system for reporting problems with the High Voltage Duty Cycle has been refined.

When RAD7 data is downloaded, CAPTURE no longer saves a R7RAW file alongside the R7CDT file.

The Meaningful Thoron Threshold region is now shaded properly on the graph. This addresses a bug introduced in an earlier version of CAPTURE.

The Preferences Window now contains a checkbox labeled Allow temporary changes to printer output format, which controls whether CAPTURE is permitted to change the format of the RAD7's output in an effort to improve communication performance.

Previously fatal program errors are now reported in a dialog box, and the user is prompted to close the application when convenient.

Version 5.0 (February 2013):

The Chart Recorder now supports RAD7 Groups, which are sets of RAD7s designated by the user whose data is averaged and displayed as a single graph. If the RAD7s are synchronized properly, CAPTURE makes it easy to visualize their combined output and obtain highly certain radon concentration data in real time.

The Chart Recorder now supports the display of Thoron for any records recorded in Thoron mode. Radon in Water, Thoron in Water, and Water Temperature graph lines are available for data recorded using the RAD AQUA or Water Probe. To facilitate the display of the Radon in Water and Thoron in Water graph lines, the Water Temperature may be specified as either a fixed temperature value or as an offset of the RAD7's recorded Air Temperature.

RAD7 data files using unsupported concentration units such as Counts Per Minute or Total Counts are now able to be parsed and graphed. CAPTURE may require inputting the RAD7's Normal and SNIFF Sensitivity if these values are unable to be obtained from the data itself. Once these values are provided, radon concentrations can be determined. The Chart Recorder remains unable to display data recorded in unsupported concentration units, but ample information is provided on how to correct the situation.

In the Preferences Window, the RAD7 Profile editor now displays sensitivity information for the selected RAD7 Profile based on any open graphs that use that profile. Previously this sensitivity information was based on the content of the top graph window, and this would sometimes provide misleading information.

The Chart Recorder now downloads needed runs in a more efficient and robust fashion, accounting for anomalies such as empty data runs and records out of chronological order. The Chart Recorder has also been improved graphically, and its axes now scale more appropriately based on the full range of available data. Chart settings are now maintained in the program's preferences.

CAPTURE now provides more information on RAD7 data errors, both when opening files and when examining particular data points in the Statistics panel. Irregularities in the counts spectrum are now reflected in the Spectrum panel.

Significant improvements have been made to the Chart Recorder's logging features.

Data combining operations now preserve data that under specific circumstances could previously have been lost.

CAPTURE no longer mistakenly interprets certain RAD7 data files as using the Fahrenheit temperature scale.

CAPTURE can now scan for connected RAD7s even when the Main Window is not open.

Version 4.9 (November 2012):

The Big Bottle System configuration interface has been reorganized to allow for a greater variety of combinations of drying units and DRYSTIK devices. The visual representation of the setup has been improved, and it now supports multiple bottle sizes and drying tube types. Warning messages are provided where appropriate.

When opening RAD7 data files, it is now possible to set the Water Temperature Source to the Air Temperature values recorded by the RAD7, offset by a specified amount. This is appropriate for measuring radon in small containers of water that quickly warm to room temperature, or a continuous flow of known temperature differential.

The spectrum display is now rendered accurately for selections involving very high numbers of counts in windows A, B, C, D, and O.

In the graph display, if printer output is unavailable for a record, and the first record's record number is greater than 1, the Run and Cycle numbers of the point nearest to the cursor are now listed as [Unknown]. In such cases Run and Cycle number estimates are no longer provided, avoiding misleading statements.

RAD7 profile names are now listed in alphabetical order in the preferences window.

In the Chart Recorder, when the View Range is expanded, additional runs are obtained from the RAD7 as needed to fill the increased available space.

The Chart Recorder pens are now positioned more accurately in the middle of cycles, accounting for the results of Test Com operations.

The Chart Recorder now includes a Data menu including Erase, Renumber, and Delete commands.

The status display in the Chart Recorder panel now shows the next reading's run and cycle number, as well as the accumulated counts in windows A through D.

The calculation of thoron concentrations has been made more accurate based on the latest decay chain knowledge.

CAPTURE now displays accurate radon values in the "Last Reading" section of the Chart Recorder's status bar, even if the radon concentrations are extremely high.

The Chart Recorder refrains from refreshing the RAD7 status when doing so would interrupt the RAD7 is printing of run summary graphs.

When opening multiple RAD7 data files simultaneously, CAPTURE now queues the files to prevent multiple Open dialog boxes from appearing on top on one another.

Version 4.8.8 (September 2012):

Temperature data used to calculate radon in water concentrations may now be shifted in time to compensate for the RAD7's response delay.

The Main Window interface now refreshes properly after removing a RAD7.

CAPTURE now more effectively maintains communication with Serial to Bluetooth adaptors due to improvements in the way baud rates are changed when scanning for connected RAD7s.

Chart Recorder display settings are now properly retained when new records are recorded.

When displaying graphs, CAPTURE now prompts the user to specify the radon source and any water temperature data or other applicable parameters.

The Chart Recorder logging status indicator is now updated immediately after adjustments are made to the logging settings.

When a RAD7 becomes unresponsive, CAPTURE now prompts the user to rescan or edit the RAD7's connection settings.

Version 4.8.7 (September 2012):

A problem affecting Units Byte parsing has been fixed, so CAPTURE now interprets radon concentration units reliably in all cases.

CAPTURE now displays a shaded graph region representing data with problematic High Voltage and High Voltage Duty Cycle readings.

Several issues have been resolved in the internal framework.

The sample data files now demonstrate CAPTURE's radon in water functionality more effectively.

Version 4.8.6 (August 2012):

It is no longer necessary to rescan for RAD7s when reopening the Main Window. RAD7 operations may now continue in the background when the Main Window is not visible.

Parameters for the Big Bottle System may now be modified more easily.

The default volumes of the RAD7 have been updated so that Big Bottle System operations are now more accurate.

Version 4.8.5 (July 2012):

CAPTURE now runs significantly more quickly when multiple RAD7s are connected. CPU usage is reduced when switching between RAD7s and when updating a RAD7's status.

Data from RAD7s with partially corrupted run/cycle ordering can now be obtained and charted.

The Chart Recorder controls are now more readily available and responsive. It is now possible to specify the maximum viewing range represented by the Chart Recorder slider.

Graph viewing settings are now stored on a per-graph basis, and are restored when graphs are reopened.

The Statistics panel now displays graph point data in a context sensitive manner, showing information applicable to the visible graph lines.

Big Bottle System air and water volume presets have been more precisely calculated. The internal air volume of the RAD7 may now be specified manually, overriding presets.

The Windows version of CAPTURE no longer uses a multi-document interface (MDI) window.

Issues that caused slow graph refreshing and flickering controls have been resolved.

Version 4.8.4 (May 2012):

Humidity Correction is now applied to records using a checkbox in a manner similar to B to A Spill Correction and Forced SNIFF Mode.

The new "Download data from All RAD7s" command makes it easy to quickly obtain the raw data from all connected RAD7s.

RAD7s may now be renamed. When a RAD7 is detected, its custom name appears under its icon in the toolbar, making it easier to locate a particular device.

CAPTURE no longer mistakes incompatible serial devices for RAD7s.

RAD7 port and baud rate settings can now be changed with greater reliability.

Date and time labels may now be formatted with either a 12 or 24-hour clock, overriding the operating system's settings. Custom date formatting may be used when exporting data to a column-based text file.

Version 4.8.3 (April 2012):

The Windows version of CAPTURE now identifies serial ports and connects to RAD7s more quickly. Significant performance improvements have been achieved in configurations involving multiple RAD7s.

The Statistics and Spectrum panels have been integrated into the Graph Window, resulting in a streamlined and more intuitive user interface.

It is now possible to specify a custom drying unit volume when opening Big Bottle System data.

The Log Window now contains a set of lists showing the data that has been received through each serial port.

The stability and responsiveness of CAPTURE have been improved on Windows. The screen now refreshes more quickly, without flickering.

Humidity correction is now applied to calculated radon in water values.

Automatic update checks may now be performed whenever CAPTURE launches. This has been made the default option.

Version 4.8.2 (March 2012):

CAPTURE no longer crashes on the Macintosh. The Spectrum Window has been temporarily disabled to address this situation.

Radon in Water graph points are now accurately rendered when graphing Big Bottle System data.

Version 4.8.1 (February 2012):

The Chart Recorder now logs RAD7 data to disk in real time.

The Chart Recorder has been made more responsive and robust, obtaining data and refreshing itself in the background.

Charts may now contain multiple data runs, including sequences of over 99 records.

Printer output data is now preserved when combining RAD7 data sets.

Thoron in Water concentration readings are now scaled to compensate for thoron's brief half life.

When graphing RAD7 data acquired using the RAD AQUA or Water Probe, records lacking corresponding water temperature data may now appear on the graph.

The Windows version of CAPTURE has been made significantly more stable.

Version 4.8 (February 2012):

CAPTURE is now able to calculate Radon in Water concentrations for data obtained using the Big Bottle System accessory for the RAD7.

The Chart Recorder has been made more reliable and responsive.

Version 4.7.8 (January 2012):

The new R7CDT and R7RAW file formats have been introduced to replace the CDT and RAW file formats, resolving conflicts with unrelated formats that share the same file name extensions.

The synthetic peaks displayed in the Spectrum Window are now generated based on real-world data samples and rendered with high precision.

File associations have been resolved in the Windows version of CAPTURE. It is now possible to open a RAD7 data file in CAPTURE by double-clicking it.

The Chart Recorder now refreshes every 5 minutes instead of every minute. This makes CAPTURE's user interface more responsive and frees up the RAD7's CPU to process more counts per cycle.

The functionality of the pop-up menus above the Chart Recorder has been restored.

Exporting a selection as cleaned up RAD7 data no longer results in file corruption.

Version 4.7.7 (January 2012):

Printer output containing radon concentrations in excess of 1 million units no longer compromises data integrity.

The functionality of the Open Recent menu in the Main Window has been restored.

Version 4.7.6 (December 2011):

An issue preventing multiple RAD7 data files from being merged has been resolved.

The CAPTURE source code has been prepared for eventual compilation on the Mac OS X Cocoa platform.

Version 4.7.5 (November 2011):

Printer data is now parsed more reliably: readings containing very high concentrations of Thoron no longer result in miscounted output records, and the time at which the record was recorded no longer impacts parsing accuracy.

The Chart Recorder's status panel now properly recognizes when a RAD7 is performing WAT and GRAB operations.

File info sets are now maintained for CDT files that include printer output, permitting graph viewing settings to be saved on a per-file basis more effectively.

Version 4.7.4 (November 2011):

The Download RAD7 Data interface has been streamlined.

When no RAD7 is connected, manual download and scanning functionality is now more easily accessible.

The new 'Match Significant Figures to Precision' preference makes it possible to format highly uncertain values using fewer significant figures.

It is now possible to export printer output from graphs created from within the Chart Recorder.

High thoron concentrations and uncertainties are now parsed properly for records recorded in Thoron mode.

CAPTURE is now better able to determine whether the pump was on during particular cycles.

Unaltered raw RAD7 output and printer output are now stored as comments within CDT files.

It is now possible to drag files onto the closed CAPTURE application icon on Windows.

Version 4.7.3 (October 2011):

The horizontal grid lines are now drawn in the correct location on radon graphs.

CAPTURE now scans for attached RAD7s automatically by default.

Dense graph data is now more easily viewed when Error Bars are enabled.

Dotted lines representing areas of unknown humidity are now rendered properly.

Version 4.7.2 (October 2011):

The appearance and behavior of the real-time Chart Recorder have been improved. It contains more responsive interface controls, and the system now keeps track of which data points belong to which runs.

The default window configuration and graph appearance have been simplified, making it easier to get started with CAPTURE.

Most user preferences are now reset when opening a new version of CAPTURE for the first time, ensuring reasonable window positioning.

Automatic and Manual downloading operations are now carried out from within the same panel in the Main Window.

Version 4.7.1 (September 2011):

The Main Window no longer reappears unexpectedly when performing certain Graph Window operations.

The Export Run Summaries feature now starts counting from the specified record.

Version 4.7: (September 2011):

The new Chart Recorder panel contains real-time information about the state of each connected RAD7, including a graph of data points as they accumulate. Menus for starting, stopping, and configuring the RAD7 are also provided.

Foreign language translations may now be restricted to human-translated languages or disabled entirely, overriding the operating system's settings.

Run summary information may now be exported to a text file, as part of a streamlined Export interface.

Graph appearance and rendering performance have been improved.

It is now possible to display selection averages and uncertainties for Radon in Water and Thoron in Water.

The information panel at the top of the graph window has been redesigned to display more pertinent data.

Concentration and uncertainty values are now formatted using the appropriate number of significant digits.

The system for assigning RAD7 profiles to data files has been improved.

Radon and thoron counts are now calculated more accurately.

Version 4.6 (May 2011):

CAPTURE now supports multiple simultaneous RAD7 connections. Communication operations may be completed in parallel.

A redesigned Connection Panel makes it easier to connect to local and remote RAD7s. The Main Window's toolbar provides convenient access to each connected RAD7.

The connection framework is now more robust, for more effective network and modem-based communication.

Security features now protect RAD7s from receiving communications from unauthorized remote computers.

CDT files now include RAD7 printer output in a human-readable form.

It is now easier to configure CAPTURE to relay RAD7 commands over the Internet.

Stability and performance have been improved throughout the application.

Version 4.5.1 (March 2011):

CAPTURE now tolerates inconsistencies between RAD7 data records and supplementary data obtained through printer output.

Low concentration averages are now represented correctly on the graph.

Combining RAD7 data files now works reliably. If the combined files are known to have been recorded using the same RAD7, the device data is retained.

Exported CDT files now include any available supplementary data.

Visual glitches have been addressed in the Preferences Window.

Download operations may now be canceled and restarted more reliably.

Version 4.5 (March 2011):

Data pertaining to thoron and runs that was previously available only through the infrared printer can now be downloaded and stored in the CDT file format.

It is now possible to download a specific run, in addition to all runs or the latest run.

The thoron calculation algorithm has been improved. CAPTURE now displays a representation of the minimum meaningful thoron, and indicates when the CB spill is excessive and thoron can not be known.

Error bars and selection uncertainty regions may now be displayed on the graph.

The appropriate RAD7 Profile is automatically selected when viewing RAD7 records containing supplementary data.

When exporting RAD7 data it is now possible to specify whether the derived concentration values are calculated with respect to Forced SNIFF Mode and B to A Spill Correction.

The exported Data Summary file may now contain detailed RAD7 specifications.

The Statistics Window now contains an expanded assortment of information pertaining to the RAD7 and the point nearest the cursor.

Graphs may now display error bars indicating concentration uncertainties.

Various warning messages may now be toggled on and off in the redesigned Preferences Window.

Support for records in WAT250 and WAT40 mode has been improved.

Version 4.4.10 (December 2010):

CAPTURE now supports B to A spill correction. This option may be enabled in the Graph Controls Window.

The Clean Up Window command now respects MDI settings on Windows.

Graph points may now be displayed as shapes.

Graphs may now be rendered in monochrome for compatibility with black and white printers.

Version 4.4.9: (December 2010):

It is now possible to graph records containing unknown humidity data. Periods of unknown humidity are represented on the graph using dotted lines.

Graph line smoothing now uses a superior distribution algorithm based on Pascal's Triangle.

The RAD7 detection process now operates more reliably.

Issuing certain commands on the RAD7 keypad no longer compromises subsequent download operations.

Visual glitches in the Graph Controls Window have been addressed.

Version 4.4.8: (November 2010):

Certain window layout configurations no longer prevent CAPTURE from starting up properly on Windows.

Miscellaneous usability improvements have been implemented.

Version 4.4.7: (November 2010):

CAPTURE can now automatically check for updates and download the necessary installer (Windows) or disk image (Macintosh).

The RAD7 settings interface has been streamlined and is now more user-friendly.

It is now possible to download the latest run from a RAD7 that is set to a low baud rate.

RAD7 scanning performance has been improved; CAPTURE now begins by scanning at the baud rate at which a RAD7 was most recently found.

Graph selection bounds no longer "drift" when dragging the Zoom Slider.

Window layout has been improved on Windows 7 and on computers with smaller displays.

The Clean Up Window Arrangement command displays application windows in cascading layout for easier access to each graph.

Version 4.4.6 (October 2010):

Internal enhancements now allow for more streamlined RAD7 calibration and firmware configuration.

Version 4.4.5 (October 2010):

Records with differing Flags Bytes and Units Bytes may now be combined and averaged.

The serial port detection process has been changed to eliminate unnecessary delays while launching CAPTURE.

The new Show Data File command reveals RAD7 data files on disk.

Humidity correction can now be applied to data recorded outside the standard range of dew point conditions.

Corrected code logic for determining radon counts.

Uncertainties may now be calculated using one of two formulas. Thoron uncertainties may now be viewed and exported.

Version 4.4.4: (September 2010):

Graph navigation operations have been stabilized and streamlined.

The uncertainty values of combined records are now computed more accurately.

Version 4.4.3: (Summer 2010):

The Image Output preferences panel may be used to control print settings and to configure the appearance of saved graph images.

It is now possible to create a new selection by dragging the cursor across the graph.

A contextual graph menu provides quick access to common operations.

Version 4.4.2: (Summer 2010):

Radon concentration uncertainty is now reported correctly for the point closest to the cursor.

The humidity correction algorithm has been refined and is now more accurate.

Printed graphs now include statistics. The graph legend and labels are now larger and easier to read.

Version 4.4.1: (Summer 2010):

Concentration averages are now reported correctly when converting between units.

Version 4.4: (Summer 2010):

Graphs may now display radon in water, thoron in water, air temperature, water temperature, and relative humidity.

The Graph Controls Window now consists of multiple collapsible panels to make better use of screen space.

The graph Y Axes may now be individually controlled for radon, thoron, temperature and humidity. Slider controls facilitate improved graph navigation.

Version 4.3.9: (Summer 2010):

An issue preventing Manual Download button from becoming active has been resolved.

Version 4.3.8: (Summer 2010):

Exporting RAD7 data that has been combined using the Combine Data operation produces accurate uncertainty results.

A more modular internal data structure improves CAPTURE's performance and scalability.

On computers set to display Traditional Chinese text, CAPTURE will now use Simplified Chinese rather than English.

Version 4.3.7 (Spring 2010):

It is now possible to perform automatic and manual downloading operations remotely via dial-up modem and Internet connections.

Miscellaneous improvements have been made in the areas of usability, connectivity, and error reporting.

Version 4.3.6 (Spring 2010):

The process of scanning for connected RAD7s is now more user-friendly.

Error handling has been enhanced, with additional options providing greater flexibility.

Version 4.3.5 (Spring 2010):

CAPTURE can now communicate with remote RAD7s that are connected to the Internet via computer or wireless serial communications device.

It is now possible to configure CAPTURE to relay commands from a remote computer to a connected RAD7.

A wide range of RAD7 data fields may now be exported as tab-delineated data.

Version 4.3.4 (Spring 2010):

The Combine Data feature now allows the user to specify whether the combined data is graphed and/or saved to disk. The maximum permitted record separation value is now interpreted using a more advanced algorithm.

Temperature Data Profiles now support dates formatted by Day/Month/Year and Year/Month/Day. This makes it possible to configure Temperature Data Profiles for Lascar Electronics EasyLog data files. Support for such files is now built-in.

Any newly introduced built-in Temperature Data Profiles are automatically added to the user's collection of Temperature Data Profiles when an updated version of CAPTURE is used for the first time.

Any built-in Temperature Data Profiles that have been deleted by the user can now be restored reliably using the Restore Built-In Profiles button in the Preferences Window.

Numbers are now formatted with respect to the influence that insignificant digits exert over significant digits. Specifically, when a decimal value is displayed the final significant digit is now rounded up when the value of the first insignificant digit (the one immediately to the right of it) matches or exceeds 5.

The graph label drawing code has been improved; label borders are now cropped to the ideal size.

When translating from radon concentration in air to radon concentration in water, the uncertainty value is translated accordingly.

CAPTURE now alerts the user when relative humidity readings are excessively high, and provides suggestions for possible corrective actions.

Version 4.3.3 (Spring 2010):

CAPTURE now handles a more diverse range of temperature data file formats.

Derived RAD7 data is now protected when the Combine Files feature is used. Previously this information could be lost.

It is now possible to restore the built-in Temperature Data Profiles from within the Preferences Window.

Version 4.3.2 (Spring 2010):

Temperature Data files may now be applied to RAD7 data recorded using the RAD AQUA accessory.

It is now possible to download the latest run, as an alternative to downloading all RAD7 data.

It is now possible to begin performing RAD7 communication operations while CAPTURE continues to scan for additional serial ports in the background.

After downloading data from a RAD7 that is nearly full, CAPTURE offers to erase the RAD7 memory to make room for more records.

RAD7 Data is protected from erasure until it has been downloaded in its entirety.

SNIFF Sensitivity is now computed correctly for files whose radon values are stored using scales other than pCi/L.

Download buttons are enabled even if a download location has not been chosen.

The BA Spill Factor now defaults to 0.4 when creating a new RAD7 Profile.

Appending downloaded RAD7 data to an existing file now works reliably.

The default BA Spill Factor is now 0.05.

Version 4.3.1 (Spring 2010):

The Main Window interface has been improved and simplified.

CAPTURE now automatically detects any connected RAD7s and identifies each device's port and baud rate.

Version 4.3 (Spring 2010):

RAD7 Data may now be downloaded remotely, without having to press any buttons on the RAD7 itself.

Various other commands may be sent from CAPTURE to the RAD7.

CAPTURE now supports the importing of temperature data files. Customizable Temperature Data Profiles allow any type of text-based temperature file to be imported. (Temperature and RAD7 data integration is forthcoming.)

Numerous user interface enhancements make CAPTURE easier to use.

Version 4.2.4 (Spring 2010):

Sensitivity readings are now reported correctly when listed in Bq/m³ units.

Version 4.2.3 (Spring 2010):

CAPTURE now keeps track of associations between RAD7 Profiles and RAD7 Data Files. Beyond a limit of 1024 pairings, the least recently accessed pairings are purged.

Graph rendering speed has been significantly increased, particularly when smoothing is enabled.

Spectrum CPM labels are again visible.

Selection Bar labels are again visible.

Smoothed graph lines no longer appear near the start and end of runs. The exact smoothing threshold depends on the selected smoothing degree.

Existing CAPTURE Preferences data is no longer discarded when updates are installed.

Version 4.2 (Winter 2010):

New graphing feature: Forced SNIFF mode.

An unlimited number of RAD7 profiles may now be configured in the preferences.

RAD7 profiles now include the BA Spill factor.

It is now possible to specify custom colors for each graph line.

The Statistics Window now displays RAD7 information.

The Statistics Window may now be scrolled, and individual statistics panels may now be independently collapsed and expanded.

The Macintosh version of CAPTURE now saves graph pictures in a 64-bit compatible PNG format.

Numerous bug fixes and improvements have been made to ensure cross-platform parity.

Version 4.1 (Winter 2010):

CAPTURE now displays humidity-corrected Radon and Thoron.

The user interface has been significantly enhanced.

Multiple graphs may now be displayed simultaneously.

A Spectrum Window has been added.

The Statistics window now displays information on the point under cursor.

Improvements have been made to the algorithms used to generate derived data.

Numerous additional Export, Join, and Combine options.

Versions 4.0-4.0.9 (2006-2009):

The first full-featured releases of CAPTURE for Macintosh and Windows offered basic data downloading and graphing functionality.

Versions 1.0-3.5 (Pre-2006):

The earliest versions of CAPTURE were made available for the MS-DOS operating system. The software was capable of downloading RAD7 data, but graphing was not supported. Graphing was first implemented in internal test builds of CAPTURE, starting with version 3.0.

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