Ranger HRC™ operator´s manual – Hardware installation
118 Publ. No. TM 614 006 699 Rev B – ENGLISH (EN) – Oct 30. 2008
9.3.3 Alignment with LRF unit as reference
If the LRF unit or both cameras have been replaced, the LRF unit is used
as reference.
A distant alignment object with sharp horizontal and vertical edges is re-
quired. Typical objects are buildings, chimneys and lampposts. The distan-
ce to the object must be at least 800 m or more, depending on visibility.
In order to determine where the LRF unit is aiming, distant measure-
ments are made closer and closer to the alignment object until the object
is hit, as illustrated in Figure 9.9. The laser pulse can be regarded as a
circular lobe. As soon as a part of the lobe is on the alignment object, the
LRF unit will detect the object.
Figure 9.9 Laser lobe approaching from right, with crosshair reticle centered.
Figure 9.10 Laser lobe approaching from left, with crosshair reticle centered.
NOTE: Ensure that the crosshair reticle is visible in both cameras. If not, see
section 7.6.1.2.