Rockwell Automation 2755 High Performance VLD Scanner - Manual (Page 40)

5–3 Operating the Scanner
The scan angle adjustment switch has 4 positions:
•
Position #1 is full scan angle
•
Position #2 is 3 /
4
scan angle
•
Position #3 and #4 is 1 /
2
scan angle
To avoid an unnecessarily long scan, rotate this switch
counterclockwise. The scan angle will reduce from full to
approximately
#@4, and !@2 .
Figure 5.2 shows the scan angle relative to the switch position. In
each case, the usable beam will be approximately 80% of the actual
beam width.
Figure 5.2
Scan Angle Adjustment Switch Positions
Position #1
Full Counterclockwise
Position #2
1 Position Clockwise
From Fully Counterclockwise
Position #4
Full Clockwise
Position #3
1 Position Counterclockwise
From Fully Clockwise
Full Scan Angle
(Factory Setting)
3/4 Scan Angle 1/2 Scan Angle 1/2 Scan Angle
(same as position #3)