4. DISPLAY FEATURES
This chapter tells how to start GammaVision, explains its display features, discusses the role of the mouse and keyboard, covers the use of the toolbar and sidebars, and shows how to use additional features such as Help.
4.1. Startup
To start GammaVision, enter gamm in the “search programs and files” box, then click the GammaVision search result; or open the Windows Start menu and click GammaVision, and
GammaVision (Fig. 42). You can also start GammaVision by entering run in the search box and choosing the Run option; or (in XP) by clicking Run on the Start menu. The Run option allows you to start up from the command line, with or without arguments, as described in Section A.1.
Figure 43 shows GammaVision’s principal screen features.
1) Title bar, showing the program name and the source of the currently active spectrum window. There is also a title bar on each of the spectrum windows showing the source of the data: either the Detector name or the word
Fig. 42. GammaVision Menu.
“Buffer” with the spectrum name. On the far right are the standard Windows Minimize,
Maximize, and Close buttons.
2) Menu Bar, showing the available menu commands (which can be selected with either the mouse or keyboard); these functions are discussed in detail in Chapter 5.
3) Toolbar, beneath the menu bar, containing icons for recalling spectra, saving them to disk, starting and stopping data acquisition, adjusting the vertical and horizontal scale of the active spectrum window, and accessing the analysis parameters.
4) Detector List, on the toolbar, displaying the currently selected Detector (or the buffer).
Clicking on this field opens a list of all Detectors currently on the PC’s GammaVision
Detector pick list, from which you can open Detector and/or buffer windows. When you select the buffer or a Detector from the list, a new spectrum window opens, to a limit of eight Detectors and eight buffers. (If a Detector is already displayed, selecting it from the list does not open a duplicate window for that instrument.) If you select a Detector, the spectrum in its memory (if any) is displayed. The droplist shows the name of the most recently selected Detector or buffer.
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GammaVision
®
v7 (A66-BW) 783620H / 1013
Fig. 43. Main GammaVision Screen Features.
5) ROI Status Area, on the right side of the menu bar, indicates whether the ROI marking mode is currently Mark or UnMark. This operates in conjunction with the ROI menu commands and arrow keys (see Section 5.8).
6) Spectrum Area, which displays multiple spectrum windows — up to eight Detector windows and eight buffer windows simultaneously. When you attempt to open a ninth spectrum or buffer window, GammaVision will ask if you wish to close the oldest window of that type. Alternatively, you can turn off the Multiple Windows feature and run in the original one-window-at-a-time mode.
Spectrum windows can be moved, sized, minimized, maximized, and closed with the mouse, as well as tiled horizontally or vertically from the Window menu. When more than one window is open, only one is active — available for data manipulation and analysis — at a time. The title bar on the active window will normally be a brighter color than those on the
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783620H / 1013 4. DISPLAY FEATURES
inactive windows (the color scheme will depend on the desktop colors you have selected in
Windows Control Panel). Detector windows or buffer windows containing a spectrum from an MCB will display the Detector name on the title bar. If you have opened a spectrum file into a buffer window, the title bar will display the filename. To switch windows, click the window you wish to activate, use the Window menu (see Section 5.10), or cycle between windows by pressing <Ctrl + Tab>.
Each spectrum window contains an Expanded Spectrum View and a Full Spectrum View
(see items 7 and 8 below).
7) The Expanded Spectrum View shows all or part of the full histogram; this allows you to zoom in on a particular part of the spectrum and see it in more detail. You can change the expanded view vertical and horizontal scaling, and perform a number of analytical operations such as peak information, marking ROIs, or calibrating the spectrum. This window contains a vertical line called a marker that highlights a particular position in the spectrum.
Information about that position is displayed on the Marker Information Line (see item 10 below).
8) The Full Spectrum View shows the full histogram from the file or the Detector memory. Note the indicator in the upper-right corner, which indicates the unit’s current data collection mode, e.g., pulseheight analysis mode (PHA), list mode (LIST), or one of the three zero-dead-time modes (ZDT, LTC,
Fig. 44. Full Spectrum View with Expanded Spectrum
View Area Highlighted.
or ERR; see Fig. 76, page 76). The vertical scale is always logarithmic, and the window can be moved and resized (see Section 4.4.4). The Full Spectrum View contains a rectangular window that highlights the portion of spectrum now displayed in the Expanded Spectrum View (see Fig. 44). To quickly move to a different part of the spectrum, just click on that area in the Full Spectrum View and the expanded display updates immediately at the new position.
9) Status Sidebar, on the right side of the screen, provides information on the current Detector presets and counting times, the time and date, and a set of buttons for moving easily between peaks, ROIs, and library entries (see Section 4.5).
10) Marker Information Line, beneath the spectrum, showing the marker channel, marker energy, channel contents and in some modes, other details about the marker channel, such as the efficiency at this energy.
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