
Overview of Autocalibration
6-2 MS-880 Industrial Long Range Scanner User’s Manual
6–Autocalibration
Overview of Autocalibration
When an autocalibration command is sent, the scanner first steps through a coarse
grid of focus settings, looking for readable bar code symbols, and recording the high-
est read rates it encounters. This is “Pass 1,” as shown by the blue line in figure 6-1, a
screen capture of an actual autocalibration routine in ESP. On “Pass 2” (red line) it
returns to the focus position where it found the best read rate and steps through a
finer grid of focus, gain and tracking settings. The software evaluates the results and
selects the best data. If it passes, it displays an “Autocalibration Passed” message at
the top of the window.
Figure 6-1 Typical Autocalibration Graph
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