Sigma LBA-710, LBA-714PC, LBA-300, LBA-712, LBA-708, LBA-500PC, LBA-700, LBA-400 Set Reference Source

appear in the display. This profile is a projection of the Current beam plus the Reference beam. All projections are made from the Cursor positions.

3D The Current beam will be displayed in Red. The Current plus the Reference will be displayed in Blue. If cursors are enabled they will follow the contour of the Current beam.

3.2.7.7.4Reference Alone:

2D You must have both Cursors and Cursor Profiles enabled for this feature to operate. The Reference beam alone will appear in the display. A second profile, drawn in Lt. Gray will appear in the display. This profile is a projection of the otherwise unseen Current beam. All projections are made from the Cursor positions.

3D The Reference beam alone will appear in the display. It will be displayed in whatever Beam Color choice was selected.

3.2.7.7.5Current - Reference:

2D You must have both Cursors and Cursor Profiles enabled for this feature to operate. The Current minus the Reference beam will appear in the display. A second profile, drawn in Lt. Gray will appear in the display. This profile is a projection of the Current beam. All projections are made from the Cursor positions.

3D The Current minus the Reference beam will appear in the display. It will be displayed in whatever Beam Color choice was selected.

3.2.7.7.6Current + Reference:

2D You must have both Cursors and Cursor Profiles enabled for this feature to operate. The Current plus the Reference beam will appear in the display. A second profile, drawn in Lt. Gray will appear in the display. This profile is a projection of the Current beam. All projections are made from the Cursor positions.

3D The Current plus the Reference beam will appear in the display. It will be displayed in what ever Beam Color choice was selected.

Note: In all of the above, negative energy results will always be drawn in dark gray. The results computations are only for the Current beam. The displayed image resulting from adding or subtracting reference frames is not saved in the frame buffer, however these images can be printed.

3.2.7.8Set Reference Source

The Set Reference Source edit control allows you to select what type of data will be loaded into the reference frame. Note: This edit control is repeated in the Capture dialog box.

•If the Set Reference Source item is set to Current Frame, the data in the currently viewed frame will be copied to the Reference frame.

•If the Set Reference Source is set to Last Gauss, and the Gauss Fit item in the Computations dialog box is checked, then the beam profile resulting from a computed Gaussian fit to the currently viewed frame will be copied to the Reference frame.

Operator’s Manual 80 LBA-PC