Section 14-Archived Data and Data Viewer
14. Archived Data and Data Viewer
Sample data from all application modules is automatically stored in archive files and can be opened by either the integrated Data
Viewer software program or spreadsheet programs such as MS Excel.
Archive File Creation
Every time an application module is started, an application-specific archive file is created for the user that is logged in. All
measurements made by the user (in that application module) for a given calendar day are stored in a single archive file. These files
bear the name of the respective application module with the date appended. For example, an archived file entitled “Nucleic Acid 2005
11 07.ndj” corresponds to Nucleic Acid data from the software session that began on November 7, 2005. A unique file extension (.ndj)
has been given to these files to enable automatic startup with the Data Viewer (see section on Data Viewer below).
The data may be edited and/or reformatted and stored under names of the user’s choice. The spectrum can be re-plotted from the
wavelength data if needed for further analysis.
Note1:
Absorbance data shown in archive files are represented as they are displayed on the screen. For Nucleic Acids, Protein A280,
and Protein and Labels application modules, data are stored based on a 1.0 cm (10.0 mm) path. For MicroArray, UV-Vis, BCA Protein,
Bradford, Lowry and Cell Culture application modules the data is normalized to a 1.0 mm (0.1 cm) path. For high absorbance UV-Vis
samples, data are stored based on a 0.1 mm path.
Note 2
: For data from all modules, a column entitled ‘Measurement Type’ is included. For each measurement, this column will contain
‘Measure’, ‘Blank’, or ‘Reblank’. If the value is ‘Measure’, then the values in that row are from a normal measurement that has utilized
the stored blank value. If the value is ‘Blank’, it indicates that the measurement is the initial blank recorded. If the value is ‘Reblank’, it is
the re-analysis of the previous measurement with a new blank.
Data Storage Hierarchy
The hierarchy for archive files is as follows:
C:\NanoDrop Data
Æ
User name
Æ
Application Module
(BCA Protein, Lowry, Bradford, Cell Culture, MicroArray, Nucleic Acid, Protein
A-280, Proteins & Labels, UV-Vis or UV-Vis HiAbs)
All archived data files are stored within an application module folder that is within the User folder as shown below:
User-Defined Archive File Location
In addition to the primary data storage, users may elect to save their data to an additional location. This option can be chosen under
the Archiving Tab in User Preferences on the Main Menu by setting the ‘Duplicate data storage box’ to ‘On’ and then choosing the file
path by clicking on the file folder icon under Duplicate Data Folder. Save the alternative path by clicking on the ‘Save Preferences’
button before exiting the User Preferences window.
All data are written to the archive file immediately upon completion of the measurement. Inadvertent software or PC shutdowns should
not affect the archive file.
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