FAQ - Frequently Asked Questions

This adjusts the quality of the image imported to the PC.
Perform this adjustment in the following cases:
• The tester's illumination lamp has been replaced, and the brightness of the illumination has changed significantly.
• The brightness or contrast of the observed indentation image has worsened significantly.

 

1. Start the instrument, and test by [Test] apprication to create an indentation in a hardness standard piece or another sample. Select the test force that produces the largest indentation that still fits within the window border.
2. Turn the illumination lamp down as low as possible using the [Brightness adjustment] pane.
3. Gradually increase brightness of the illumination lamp using the [Brightness adjustment] pane until the image on the display is clear. If the brightness is increased too much, the image will turn white.
4. Finish the [Test] apprication and return to the main menu.
5. On the main menu, click [File] - [Maintenance] to display the [Maintenance Menu] window. Then click [Brightness/Contrast Adjustment]. The [Brightness/Contrast Adjustment] window will be displayed.

   

6. Click [Set Default] to return to the initial settings.

7. For the color camera, click [White balance]. The camera automatically adjusts the white balance. It takes a few seconds.
8. Change the settings values by dragging the various sliders in the [Brightness/Contrast Adjustment] window. The hue and saturation settings are useful when the camera is changed to a color-capable model.
9. Click [Redraw Histogram] to display a histogram of the image using the current settings values.
  The histogram of an indentation image from a sample with a mirror finish, such as a hardness standard piece, will have two peaks. The left peak corresponds to the indentation and the right peak to the background. Ideally, Automatic Detection of indentations is
performed on an image with two such peaks, and with the valley between the peaks at the center of the histogram.
  • Increasing the brightness value shifts the entire histo gram horizontally to the right.
  • Reducing the gamma value will smooth the entire histogram.
  • Increasing the edge enhancement value will make the edges sharper.
  Be careful to avoid the following histogram characteristics:
  • Histogram with a peak at the right ed ge: Halation is occurring.
  • Histogram with a peak at the left edge: The brightness is insufficient.
10. When the adjustment is complete, close the [Brightness/Contrast Adjustment] window and return to the [Maintenance Menu] window.