Synrad FH FLYER, Руководство оператора

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Tracking definitions
Mark Pitch
Mark Pitch is the distance, in the axis of part motion, from the leading edge of the Mark on one part to the
leading edge of the Mark on the following part. To achieve maximum line speed, Mark Pitch should be
greater than the Usable Field Size. See Figure 5 -3.
Usable
Field
Size
Mark Pitch
ABCD1234
ABCD1234
Part
Motion
0°
Upstream Edge Downstream Edge
Figure 5 -3 Mark Pitch greater than Usable Field Size
Cycle Time
The amount of time in seconds required to complete the Mark is the Cycle Time.
Tracking Window
The Tracking Window is the fixed area beneath the Flyer head where marking is completed without error.
The Tracking Window is defined as the smaller of either Usable Field Size or Mark Pitch. Note that the
Tracking Window is located within the Marking Window and can never exceed the extents of the Marking
Window.
For example, Figure 5 -4 shows an application using a 200 mm lens with a 0° Motion Vector. The Mark-
ing Window dimension, in the direction of part motion, is 134 mm. Mark placement creates a Usable
Field Size measuring 128 mm and part spacing creates a Mark Pitch measuring 90 mm. By definition, the
Tracking Window is the smaller of Usable Field Size, which is 128 mm, or Mark Pitch, which measures 90
mm. In this case, the actual Tracking Window is limited to 90 mm.
SYNRAD FH Series Flyer Operator’s Manual Version 3.4
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