931040P / 1014
3. RADIATION MONITORING
35
Figure 30. Spectrum Display
Mode.
Tap Save to save the current spectrum and identification results in the selected data storage
location and file format(s). Tap Display to view the current spectrum (see Section 3.2.6).
3.2.6. Display Spectrum
The Display screen (Fig. 30) plots the gamma-ray
energy spectrum currently in memory. This feature
gives the expert spectroscopist more information
about the nuclides present. The expert can then
make more informed decisions about the material
under investigation.
To enter Display Mode, tap the Display button. See
the Display Controls discussion below.
Tap Save to save this spectrum and identification
results to the selected data storage location and file
formats. Tap Back to return to the previous dialog.
Because the spectrum display area is limited, a modi-
fied version of scientific notation is used when label-
ing the Y axes for numbers greater than or equal
to 10,000: The number of trailing zeros in the number
is replaced by “E” followed by the number of zeros. Some examples: 10,000 becomes 1E4;
12,000 becomes 12E3.
The spectrum display has a vertical marker line. Just below the spectrum is shown the position
of the marker in the spectrum (in keV) and the counts in the marker channel. To move the
marker line to a different location, tap the desired position. The marker will jump to that location
and the values will update correspondingly. You can also press on the display area and drag the
marker left or right to the new location.
3.2.6.1. Display Controls
The spectrum display control buttons are just below the display. You can use them to show the
spectrum in different ways for better interpretation of the spectrum.
!
Full/Zoom — In the expanded view, the Full button restores the display to 8000 chan-
nels. In the full view, the Full button changes to Zoom and zooms the display to the last
horizontal expansion before Full. In this way, you can easily look at the peaks in the
spectrum in detail (Zoom in) and move quickly from energy to energy in Full mode.
Summary of Contents for Detective-DX-100T
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