Step And Glue - Andor Technology Shamrock 500i User Manual

Shamrock 500i & 750
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The step and glue function allows to user to build up a composite spectrum made up of individual spectra. The user
selects the start and end wavelengths of the scan region and the grating to be used. The software will then control the
acquisition of several spectra that cover this spectral region. The Step and Glue mode is only available with the CCD set
in Single Scan mode (see ACQUISITION, SETUP ACQUISITION menu).
In Step and Glue mode the individual scans (datasets) are merged by taking the average of the values in the overlap
region from the two input datasets. The points outside the overlap region of the input datasets are used directly. For
points falling within the overlap region, the value used is a varying scaled average of the values from each of the
datasets. The scale changes linearly between the start and end of the overlap region putting more emphasis on the value
from the closest edge of the overlap. To enter the Step and Glue mode press the button on the Wavelength Control:
On selection of Step and Glue mode the Wavelength Control will change to the following layout and several new graphic
features will appear:
The hatched slide control bar gives an indication of the current wavelength position and current active grating in
the system. The Step and Glue slide bar control will also appear. The slide bar allows the user to enter the start and
end wavelengths for the Step and Glue mode and select the grating with which to take the data. The start and end
wavelengths can be input in several ways:
• Left click and drag the appropriate wavelength indicator.
• Right click and manually input the start and end wavelength (see below).
• Step and Glue Setup dialog under the menu Acquisition: Setup Acquisition.
Version 2.1 rev 13 Feb 2017
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