
READING FEATURES | 3 |
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3.2.1Step-Ladder Mode
If scanning is perpendicular to the code motion direction (Figure 23), the number of effective scans performed by the reader is given by the following formula:
SN = [(LH/LS) * SS] – 2 | Where: SN | = number of effective scans |
| LH | = label height (in mm) |
| LS | = label movement speed |
|
| in (mm/s) |
| SS | = number of scans per second |
|
| Direction of code |
|
| movement at LS speed |
DS1500 |
| LH |
|
| |
|
| Laser beam |
Figure 23 -
For example, the DS1500 (1200 scans/sec.) for a 20 mm high code moving at 1200 mm/s performs:
[(20/1200) * 1200] - 2 = 18 effective scans.
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