1107231N / 082020 4. DETECTIVE X APPLICATION
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the last time this type of spectrum was acquired. Recent entries for each spectrum type are available by
tapping the down arrow on the right side of the field, or a new label can be entered by tapping the Edit
button.
3. Enter a preset count time for this acquisition, in seconds, in the Next time preset field, or leave the field
blank or enter a zero (0) if it is intended to manually stop data collection. Note that the Identify preset
count time on the Analysis Settings page is ignored when in multiple-spectrum ID Mode.
The field is initially populated with the time used the last time this type of spectrum was acquired. Recent
entries for each spectrum type are available by tapping the down arrow on the right side of the field, or
a new label can be entered by tapping the Edit button.
4. The user is now ready to acquire the spectrum. Position the source (or blank), remove all other nearby
sources, then tap the lower-right Collect [spectrum type] Sample button (the button label will depend
on the spectrum type selected). The ID Mode screen (Figure 37) will be displayed. Wait for the count
preset to elapse or tap End Now to manually stop data acquisition. Note that Quick Save is not available
when performing a Multiple Spectrum ID Mode acquisition.
5. When spectrum acquisition is complete, the screen will switch to the Multi ID Mode screen (Figure 63)
and wait for information to be entered for the next spectrum. The bottom-left Spectra counter will track
the number of spectra that has been added to the file so far; and the Back button will change to Finalize.
6. Each time a spectrum is acquired on a blank sample, its spectrum is saved internally. The operator can
then tap Last Blank to add it to the current N42.42 file, or to any subsequent file until the next blank
spectrum is acquired. Known spectra are handled the same way, and the operator can tap Last Known
to add the most recent known spectrum to the current file or to any subsequent file until the next known
spectrum is collected. This feature saves the time of unnecessarily repeating blank and known
measurements.
7. After all spectra have been added to the file, tap Finalize. This will navigate to the optional metadata
page shown in Figure 61, where additional information can be entered.
8. To complete the multiple-spectrum measurement, tap the Finish button to return to Detect Mode.
4.8 MANUAL DATA FILE TRANSFER
The Detective X saves all data collected in ID Mode. Data files are saved in ANSI N42.42-2012 format. Files
will have a background spectrum and one or more measurement spectra. The filename format is:
XXXXXXX_YYYY_MM_DD_HH_MM_SSS
where the 7 Xs represent an ever-increasing counter, and the remaining string is the UTC date-time stamp.
The spectral file can be viewed with U.S. government-supplied software; MCA emulation software such as
Los Alamos National Laboratory’s PeakEasy or Sandia National Laboratory’s Cambio; or ORTEC’s
GammaVision® Gamma-Ray Spectrum Analysis and MCA Emulator application (A66-BW).
Data files can be accessed in several ways with Detective X. The manner in which the user will access these
files will depend upon the current destination directory, be it USB Flash Drive or “My Documents” folder, as
discussed in Section 4.4.2.
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