Opens the settings related to the spectrum plot. In the settings you can choose:
Scale of the Y-axis - linear or logarithmic. Fast scale switching - with icons “Lin.” and “Log.”. Units of the Y-axis - the number of pulses or the count rate. X-axis units - channel number or photon energy. Graph update: either automatically at a preset interval or manually with the button . Displayed channels: You can select how many channels to display on the graph, starting from zero (more precisely, from channel number 2, since channels 0 and 1 are service ones and are not displayed). This can be useful if the events in the older channels are not interesting. Show last channel: Turn on/off the display of the last channel data. The counter of the last channel includes not only the data of this channel itself, but also all data outside the range displayed on the graph, so it may not always be interesting to look at the last channel. Drawing the graph: You can choose to fill the spectrum graph with color (fill) and stroke with a line, or one of these options. Drawing the background: You can set the background to fill the graph with a color (fill) and stroke with a line, or one of these options. Displaying the background: look to . Display isotope information: In the application window title bar, display information about the characteristic gamma line of the isotope and decay chain, and display an icon to go to a website for more information. Disabling this option also disables the display of all isotope lines. Display the position of the gamma lines: Draw turquoise clue lines corresponding to the position of isotope energies. Display the intensity of the gamma lines: Draw red clue lines corresponding to the positions and intensities of isotope energies. Draw markers on the lines of intensity: Display the gamma line intensity amplitude as red dots on the isotope lines. "Spectrum Information" group: You can select which spectrum information to display in the upper right corner of the graph. Show the amplification slider: Below the spectrum graph you can see the slider that adjusts the "amplification" of the histogram, see below. Show the filter slider: Below the spectrum graph you can see the slider that adjusts the degree of filtering (smoothing) of the histogram, see below. Gaps between bars in the “Fill only” mode: Draw bars with gaps between them, rather than a solid graph contour line, if the selected scale allows it and the "Draw a polyline instead of a histogram" option is disabled. Draw a polyline instead of a histogram: instead of rectangular bars (histogram), draw a polyline that connects the midpoints of the tops of the bars. The graph is not entirely “true”, because the accumulation of the spectrum is still discrete for each channel. In this mode, the option “Gaps between bars in the “Fill only” mode” has no meaning and is ignored. Do not display negative values in the spectrum-background difference mode: Display only the top of the spectrum versus background difference plot that corresponds to positive difference values. Negative values will be displayed as zero. Automatically scale the Y-axis: When the scale is more than 1, automatically select the scale of the Y axis in accordance with the maximum value of the data in the displayed area of the graph. Export format: Choose in which format . csv Export separator: you can specify which symbol to use when exporting the spectrum to a text file with the .csv extension (comma or semicolon). Calibration coefficients: a page opens where you can specify the calibration factors a₀, a₁ and a₂. Spectrum calibration is performed to convert the number of the spectrum channel to the value of the emission energy in keV using a polynomial of the 2nd degree of the form:
E=a₀ +a₁·x+a₂·x²,
where
x is the channel number;
a₀, a₁, a₂ are calibration coefficients.
