BNC 970 Portable Multi-Channel Analyzer (MCA) - Manual (Page 26)

Model 970 Instruction Manual 23
Current ROI Set Name: displays the filename of the currently loaded ROI Set. If no file is
displayed, then no ROI Set is currently loaded. Note: A small display will appear below
Current ROI Set Name:
(not shown in the display above) that flags the fact that the current
ROI Set has been altered but not yet been saved.
The small panel (Drag cursor to) immediately below this normally has Zoom (normal)
checked. This means that clicking and dragging on the spectrum will have the normal effect
of zooming and un-zooming the display. If Set ROI is checked instead, clicking and dragging
in the spectrum will define an ROI. After setting an ROI this way, the panel will revert to Zoom
(normal).
Moving down and to the left is a small gray box displaying the current ROI # with “left” and
“right” arrow buttons. This box displays which specific ROI is being edited within the greater
ROI Set. Click the arrow buttons to change the specific ROI. The currently selected ROI is
shown in fuchsia on the Spectrum Display. To create a new specific ROI, advance the ROI
#
to an ROI that does not yet contain data. Up to 50 ROIs may be defined within an ROI Set.
Immediately below the ROI # is the ROI Name input box. Use this section to provide a
descriptive name for each individual ROI within the greater ROI Set. This name becomes the
one displayed in the Spectrum Status Bar, and is also used to identify individual ROIs in any
analysis reports.
Approximately in the middle of the ROI Panel are two radio button controls, Dbl Click to Set
Starting Energy (keV)
and Dbl Click to Set Ending Energy (keV). When the ROI Panel is
visible, double clicking on the spectrum will set either the lower or upper bound of an ROI
(depending on which of these controls is selected).
The controls immediately below provide a display of the lower and upper bounds of a specific
ROI. Using the buttons with the single arrow will advance the boundary of the specific ROI up
or down by one channel; the buttons with the double arrow will advance the boundary up or
down by 10 channels. The energy associated with this channel will be updated in the input
box.
The Kill ROI button will completely delete the currently selected specific ROI, without giving
any additional warning.
Load ROI Set opens a dialog box to select an ROI Set. If the current ROI Set has not been
saved since it was last altered, a warning will be displayed and you will be given an
opportunity to save the current ROI Set before continuing. If the ROI Set is not explicitly
saved, all changes will be lost when a new ROI Set is loaded.
The Cancel button will only be enabled when the current ROI Set has been altered or edited
in any way since when it was last saved. Using this function will re-load the current ROI Set
as it was last saved.
The New ROI Set” button clears the current ROI Set from SNAP-MCA (if it has not been
saved, you will be given the opportunity to do this first) so that a new ROI Set can be created.
You will be prompted to first name the ROI Set, which you must do in order to continue.