This chapter will guide you through, step by step, how to perform a simple EMC-Scan measurement step by step.
1. Start the software by clicking on the icon on your desktop.
2. After a few seconds, this dialog box will show.
3. Click on Yes to reset the Scanner to its starting position.
4. Position and calibrate the near field probe according to the procedure in “Positional calibrating the near field probe”.
5. Make sure that the near field probe is connected to the spectrum analyzer (possibly via a pre-amplifier) and that all instruments are powered on.
6. Click on the Config tab.
7. In the Spectrum analyzer box, near Setting, click on the Edit button. This is the Settings dialog box.
8. Click on the ”down arrow” on the right side of the Setting box and select a suitable setting from the list showing all stored settings. If no suitable setting is found, you may enter a new setting name and alter the settings.
9. Click on the Save button.
10. Click on the Close button.
11. Click on the Config tab.
In the Spectrum analyzer box, near the Probe setting, click on the Edit button.
12. Click on the ”down arrow” on the right side of the Probe box and select a suitable setting from the list showing all stored settings. If no suitable setting is found, you may enter a new setting name and alter the settings to suit. (Refer to “Entering the amplitude correction factors of the near field probe”).
13. Click on the Save button.
14. Click on the Close button.
15. Place the test object on the Scanner table.
16. Click on the Meas. points tab.
17. Click on the General button to select 2.5 dimensional measuring points. It is also possible to generate full 3D measuring points. See “How to generate 3D measuring points” for a detailed description.
18. In the Grid / Point list box, select Grid.
19. Enter a suitable step size in the Step size box.
A small step size will generate a high-resolution measurement and a large step size will generate a low-resolution measurement.
Measuring in large steps is quicker than measuring in small steps.
20. Select measuring plane by clicking on XY plane, XZ plane or YZ plane.
21. Click on the Outline button.
Define the outline of the test object by entering values in the Area box. You may also click and draw the outline. Drawing the outline is optional, but may be valuable when you want to repeat a measurement.
22. Click on the Base level button.
Define the measuring area by entering values in the Area box. You may also click and draw the area.
23. Enter the value of Z-level in the Area box.
Z- level is the height of the probe above the Scanner table during measurement.
24. You may define “islands” with different Z-levels than the Base level by clicking on Level 1 … Level 4 buttons. This is useful e. g. to make the probe skip over high components on a PCB.
25. The measuring point can be saved (as an .MP file) for later use by clicking on the Save button.
26. Click on the Meas. EMC tab
27. Click on the Multi-Scan button to start the wide-band measurement. (The setting for this measurement was defined in step 7.)
Before the measurement is started, you will have to enter the location to save the result as one or more files.
28. Enter the desired file name.
You do not have to enter the file extension because the files will automatically be named .MS2D. The measuring results stored in this file can be visualized on the View Scan tab
29. Click on the View Scan tab.
30. Change the search criteria at the bottom in the format box so that you can see the Multi-Scan files.
31. There are many ways to visualize the result of a Multi-Scan measurement by utilizing the features on the View Scan tab. For detailed information, please refer to page 131.
32. The result of an Multi-Scan measurement can be documented as a report in HTML format and printed out.
