Texas Instruments DLP NIRscan EVM, Руководство пользователя

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Custom Scan Mode
27 DLPU016C – April 2014 – Revised April 2019
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Operating the DLP NIRscan EVM
Figure 3-6. Example Custom Scan Spectral Data
Note that the header in the download file contains many important aspects of the scan, including:
1. Method: This defaults to linescan mode at this time, referencing how the sample is taken by scanning
vertical lines across the DMD, each line representing a specific wavelength.
2. Host Date-Time: This is the date (browser date) and time the scan was taken.
3. Sample Name: This is the scan name entered on the first Custom Scan screen. If the scan name has
not been changed, the sample name defaults to default_scan.
4. Spectral Range Start: This reflects the lower scan limit entered on the Custom Scan screen.
5. Spectral Range End: This reflects the upper scan limit entered on the Custom Scan screen.
6. Number of Wavelength Points: This reflects the number entered on the Custom Scan screen.
7. Digital Resolution: This reflects the number calculated on the Custom Scan screen.
8. Number of Scans to Average: This reflects the number entered on the Custom Scan screen.
9. Total Measurement Time: This reflects the number calculated on the previous screen.
10. The rest of the file is the actual data and includes:
• Wavelength
• Calculated absorbance value for each wavelength
• Average reference ADC value for each wavelength
• Average sample ADC value for each wavelength
After the data is saved locally on the machine running the browser, the user can return to the Custom
Scan screen.
Download Raw ADC Data : In the Custom Scan mode, there is another button located beneath the plotted
absorbance spectrum labeled Download Raw ADC Data . Whereas the Download Spectrum button
provides averaged reference and sample data values, there are potentially cases where a user may want
to download all the data points sampled during the scan. To save the raw data to a local machine, click
the
Download Raw ADC Data button. This action prompts the user to open the .csv file in excel (if
available on the users machine) or to save the file locally. The file format imports into excel as shown in
Figure 3-7 .