Basic Navigation

DTSA-II Main Screen

The main screen on DTSA-II is split horizontally into two resizable sections. The top section contains a spectrum display and manipulation window. The bottom section contains tabbed panels displaying spectrum information and report information. An application menu is also associated with the main screen. This menu contains sub-menus for file related tasks, spectrum processing related tasks, advanced tools and basic help The menus are discussed here.

The spectrum panel is divided into three vertical panels - the spectrum list, the spectrum properties, and a panel containing the KLM editor and a composition display. The spectrum list is used to manage the available spectra. When a spectrum is read from disk or from the spectrum database, the display name of the spectrum will be shown here. To display a spectrum, select the name of the spectrum in this list. Multiple spectra may be displayed simultaneously by holding the control or shift keys while selecting the display names with the mouse.

The spectrum properties panel displays the properties of the spectra selected in the spectrum list. If only one spectrum is selected, the properties will be those of this spectrum. If more than one spectrum is selected, only those properties which share identical values in all displayed spectra are displayed. The spectrum properties are derived from the properties available in the file or database record from which the spectrum was read and any additional properties applied to the spectrum by the operator. For example, when you specify which instrument and x-ray detector was used to collect a spectrum, a large number of instrument and detector related parameters are defined. Alternatively, you may edit the spectrum properties using the Edit spectrum properties menu item and dialog.

The KLM editor allows you to add characteristic x-ray energy lines to the spectrum display. You may select an element by typing the name or the common abbreviation into the Element edit box or you may use the slider below the edit box to scroll through the elements. As an element is selected, a series of temporary KLM lines will display on the spectrum display. To make these lines permanent, check one of the K lines, L lines, M lines or All lines boxes. Multiple line families from multiple elements can be displayed simultaneously. You may remove individual line families by selecting an element and unchecking the associated box. You may clear all permanent lines by pressing the Clear all lines button. It is possible to fine tune which lines are displayed using the menus displayed when the Temporary lines or Selected lines buttons are pressed.

The composition display displays the composition of the selected spectrum or spectra. There are multiple different types of compositional measures can be associated with a spectrum. The different types depend upon how the measure was derived and how reliable it is. The most reliable measure of composition is called the standard composition. The standard composition is usually determined by wet chemistry or some other non-microanalytical method. Another common measure of composition is called the microanalytical composition. This measure of composition is derived from a microanalytical measurement and is often associated with a spectrum when the spectrum is quantified using one of DTSA-II's quantification algorithms. The composition display shows the most reliable available composition metric. If more than one spectrum is selected in the spectrum list then a composition will not display unless both materials share a common composition.

The Spectrum Display

Spectrum Display

The spectrum display is a very powerful tool in its own right.

Spectrum List

The spectrum list is used to select and manage spectra. When a file is read (using the File - Open dialog), retrieved from the database or created within the program, it is added to the spectrum list. There is no fundamental limit to how many spectra may be loaded simultaneously.

The Main Menu