Datalogic AREX 401, Руководство пользователя

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MARKING AREA SPECIFICATION
USER MANUAL
27
F-Theta Scan Lens
The table below lists the standard F-Theta scan lenses currently available for Arex™ 401
10C-X6X:
F-Theta Scan Lens compatibility
ƒ
= 160M
ƒ
= 254M
ƒ
= 254L
ƒ
= 330L
ƒ
= 420L
mm
166 ± 1.5
1
1. Without lens cap. If the lens cap is mounted on the lens, consider -6mm from the declared value
270 ± 3.5
2
2. Without lens cap. If the lens cap is mounted on the lens, consider -6mm from the declared value
300.5 ± 4 397 ± 6 507 ± 9
mm 199.5 ± 2.5 303.5 ± 4.5 372 ± 5 480 ± 7 576 ± 10
mm² 100 x 100 160 x 160 180 x 180 210 x 210 285 x 285
WD: Working Distance
FD: Fixing Distance
MA: Marking Area
AB: Aiming Beam
FB: Focusing Beam
Figure 17: Marking Area
F-THETA SCAN LENS
Working Distance (WD)
Fixing Distance (FD)
Marking Area (MA)
NOTE: Working Distance is defined as the distance between the center of
the marking area (defined in the focal plane) and the closest mechanical
edge of the F-Theta scan lens.
The Working Distance tolerance is defined as the ± 2-Sigma value of devia-
tion from Working Distance mean value of the estimated Gaussian model.
Refer to the following figure.
NOTE: Fixing Distance is defined as the distance between the base of the
scan head and the marking area.
The Fixing Distance tolerance is defined as the ± 2-Sigma value of devia-
tion from Fixing Distance mean value of the estimated Gaussian model.
Refer to the following figure.
NOTE: For products equipped with 160M or 254M F-Theta scan lenses the
focus position, defined at the point where the focus beam overlaps with the
aiming beam, is preset at factory.