5.4.7.4 - Gate Step
The Gate Step feature is available for use with the kinetic, photon counting, and fast kinetics acquisition modes. The
rst exposure in a series will use the gate delay specied. For every successive exposure in the series, the gate delay
applied is incremented by the gate step value. In this way the Gate Step feature causes the image intensier to be
‘gated on’ progressively later (or earlier, if a negative value is entered) for each acquisition in the series.
Step
The user can enter a time which is added (or subtracted) incrementally to the gate delay during a series of acquisitions:
Variable
The user can also set up a variable gate step by selecting the Variable tick box on the gate step interface of the Setup
Gater tab. The Setup button and the Setup Variable Gate Step dialog box will open, e.g.:
The Variable Gate Step option allows the user to congure the gate delay such that it changes in a variable fashion
between each scan of a kinetic series. For example, it may be desirable to have a very short gate delay at the beginning
of an acquisition and a much larger delay near the end. In this case it would be more suitable for the gate step to
increase exponentially. Three options are selectable:
• Exponential
• Logarithmic
• Linear
Pre-Acquisition Setup - Image Intensier
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