EDAX EDS Manual

Imaging/Mapping
Image Collect/External XY
To collect an image:
1. Confirm that the kV and Magnification are correctly entered
into the “IMG” panel. When Column and Stage control are not
available these two parameters will have to be entered
manually. Press the ENTER key after entering each parameter.
2. Put the microscope into external scanning mode. Each
microscope has its own procedures to allow the external
control of its scan circuits. Depending upon the age of the
microscope an enable button may need to be pressed on a third
hardware box or the microscope may have to be put into an
external mode in the microscope software. For newer
microscopes the EDAX system will automatically take control of
the beam when the “e-“ button is clicked. To confirm that
Eexternal scan is activated the “Ext XY” button will turn
yellow (active) in the Imaging/Mapping software and the
microscope screen will blank or freeze with an image.
3. Once these are correctly displayed in the image panel click on
the “e - “ button or select “electron image” from the “Collect”
pull-down menu.
� To improve the image quality, click on the "IMG" control panel
button and increase the matrix size to decrease pixelation effects.
Re-collect the image by clicking on the "e-" button again. Typical
images are collected at 512x400 or 1024x800 matrix sizes.
� The “Strips” box denotes the number of times the screen will be
updated during the image acquisition.
Integrated Frames
To decrease the "grain" or noisiness of the image, increase the
number of integrated frames (IntF) by “wiping” or by clicking and
dragging the mouse over the number in the “IntF” box and entering a
new number. This is located in the lower half of the Img panel.
Spectrum Collect and Quantification
To collect a spectrum, the screen display should be set to display
the spectrum and image (the button shows both and is found just to
the left of the “e-“ button). A current image should be displayed.
� Spot scan in the Imaging/Mapping software should be selected ("+"
button found in the button bar at the top of the screen).
� Clear any existing spectrum (Click on the paint roller button).
� Position the cursor on the area of interest in the image
displayed and click the mouse.
� Start collecting the spectrum (Click on the stopwatch button).
� Identify the peaks using the Peak ID control panel just as is
done in the ZAF32 program.
� When the peaks are of adequate size and quality, stop the
spectrum collection (Click on the stop-watch button again).
� To improve the spectrum display, you can click and drag on the
spectrum to stretch it both horizontally and vertically. The
buttons above the spectrum are used just as in the ZAF32 program and
a text label can be entered just above and to the right of the
spectrum (press the "enter" key following the label text entry.
� To quantify a spectrum, click on the “Q” button in the button bar of
the spectrum area. The quantification results appear in the upper
right section where the histogram of the image is displayed. This
quantification is a standardless quantification.
EDAX Basic Procedures- Imaging/Mapping 1