4-6
4 Measuring
Stand-off
distance
The stand-off distance is measured from the front of the scanning head (refer
to the following figure).
Figure 4.2:
Measuring the stand-off distance
4.3.2
Optimal Stand-Off Distances
The relation between stand-off distance and signal level is shown in the
following figure. The optimal stand-off distances are marked as visibility
maximum.
Figure 4.3:
Relation between stand-off distance and signal level
S
I
GNA
L
L
ASER
Polytec
PSV-500
SCANNING HEAD
S
tand-off distance
Object
Laser beam
S
ignal level
S
tand-off distance in mm
Visibility maximum
Visibility minimum
Two laser modes with equal intensity
Two laser modes with different intensity
A strongly dominant laser mode
141
345
549
... + 204
OPT
I
ON
Содержание PSV-500-3D
Страница 19: ...2 4 2 Introduction ...
Страница 55: ...4 10 4 Measuring ...
Страница 63: ...6 6 6 Troubleshooting ...
Страница 97: ...A 12 A Optional Accessories ...
Страница 101: ...C 2 C Declaration of Conformity ...