SM_GUI can open and display STXM 4 data files; there are, however, a few limitations. The problem is that STXM 4 data files don't hold all the information necessary for the silicon detector calibration. STXM 4 data files hold only information about one display, which is usually the proportional counter signal for Outboard STXM data files, and the bright field signal (sum of all detector segments) for Inboard STXM data files. For most users, this should be enough, so they are fine. All others, read on.
Information about all available displays is stored in the display settings file. If you load the correct STXM 4 display settings file, you have access to all displays. The display settings files are usually named sm_gui_disp_settings_[stxmo|stxmi].dat. They can be found in the zipped "X1A configuration/settings files" at http://xray1.physics.sunysb.edu/data/data.php. From SM_GUI, you can load and unload a display settings file by going to Extra STXM 4 Display Settings File. You can also show the name of the currently loaded one from that submenu.
In STXM 4 mode, "Raw Integer" and "Predefined Combinations" are the only available Signal Types (see Chap. 9 for more information). "Raw Integer" always gives you access to the raw data stored in the file (all recorded channels). In "Predefined Combinations" (the calibrated signals), if you open a STXM 4 data file and no display settings file is loaded, you will have only one detector / display available (the one stored in the data file). If you have a STXM 4 display settings file loaded, you have all displays from that file available. Note, however, that the display settings file must be for the correct microscope (otherwise your data won't make sense at all), and for the Inboard STXM should be from the correct day (otherwise the silicon detector calibration might be off).
Another limitation is that STXM 4 files cannot be saved / written, i.e. no persistent modifications can be made.
Holger Fleckenstein 2008-07-08