User guide

LBA-USB User Guide Document No: 11294 Page 65
Setting active threshold values forces the displayed beam intensities that fall
between the two threshold settings to follow the Beam Color selection. Beam
intensities that lie below the Lower threshold, or above the Upper threshold,
appear in a different color style. Intensities that lie within the threshold region
are defined as being “in-bounds.” Intensities that lie outside the threshold
region are said to be “out-of-bounds.”
If Beam Color is set to one of the standard colored selections (Color Bands,
Color Continuous, Green, or Yellow), then the out-of-bounds colors will be
replaced with the Gray Scale palette.
If Beam Color is set to the Gray Scale selection, then the out-of-bounds colors
will be replaced with the Color Continuous palette.
For best results, set both the Lower and Upper threshold values to visually
indicate where the Top Hat beam’s intensity remains within a certain range.
Program just the Upper threshold value to see if the beam’s peak intensity
exceeds a certain maximum value.
Note: Using the Lower threshold feature in 2D, combined with a colored beam
selection will have the effect of making the beam profile displays disappear. Use
a Gray Scale selection to preserve the beam profile displays.
Color Bar
When the Color Bar item is checked, a color-coded Z-axis intensity scale appears
along the right-hand edge of the beam display window. This scale reflects the
colors that are currently operating on the beam display. The numerical amounts
indicate the intensity value that is required to produce the associated color. Use
this only as a guide, unless you have perfect color/gray-scale acuity.
Copy Image to Clipboard
When this button is clicked, the currently displayed frame image will be copied to
the Clipboard in a .bmp format. This is a useful method for quickly exporting
images from LBA-USB application to another application without having to go
through the Export Image process.