783620H / 1013 11. UTILITIES
The Draw Multiplet radio buttons determine whether multiplets are drawn as a Composite curve, shown individually (Each), or displayed as individual peaks superimposed with the composite curve (Both). These modes are compared in Fig. 318. This display is most easily seen with all Fill Modes turned off (checkboxes unmarked).
The Fill Mode checkboxes allow you to determine which peak types, if any, will be displayed in fill mode rather than data-point mode.
Auto Y (Spectrum) allows you set up a fixed y-axis range for the Expanded Spectrum Window (Auto Y
Fig. 318. Draw Multiplet Modes.
unmarked/off), or allow the program to autoscale the y-axis to accommodate the tallest peak currently displayed in the expanded view (Auto Y marked/on). The Auto Y (Residual) functions similarly for the residuals plot (which is displayed from the right-mouse-button menu, Section 11.1.4.1).
If the spectrum is calibrated, the Horizontal axis can be displayed in either Energy units or
Channel numbers. If the spectrum is not calibrated, the horizontal axis is shown in channels and cannot be changed.
You can plot all or part of a spectrum by turning Auto X Range respectively on or off. Turning
Auto X Range off activates the x-axis range fields that allow you to let the plot limits in either channels or keV (select units from the droplist). The plot limits are independent of the x-axis units of measure. This means that you can, if you wish, choose to display the x-axis in Energy units, then select the portion of the spectrum to be displayed as a range of channel numbers.
In order to easily compare spectra, the energy can be set to values below the first channel in the spectrum. In this case the data below channel 0 are plotted as 0.
NOTE
Manually setting the range for one axis disables zooming for that axis only. If both axis ranges are manually fixed, all zooming is disabled.
Title Text
This dialog (Fig. 319) allows you to compose a title to be displayed at the top of the spectrum plot. In addition, you can choose whether or not to display the Real and Live Time, Spectrum
File Name, and the sample or Detector description.
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