UVITEC Cambridge FIREREADER MAX User & Service Manual page 163

You can adjust the threshold you want to apply to the marker lane so that the background level of the
marker lane will be at the same level as the one of the signal image.
Example 1:
The marker lane background is at the same level as the one of the signal.
Example 2:
The marker lane background is at an upper level as the one of the signal.
Example 3:
The marker lane background is at a lower level as the one of the signal.
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