Black Box LWU Users’ Manual 2.0 page
Black Box
15
5.3 Direct sunshine
To prevent the sun shining directly
into the receiver optics, first one
has to determine the orientation of
the link. Try to avoid East-West
orientation wherever it is possible.
Examine both sides of the link at
sunset and sunrise and find a
position where the sun cannot get
behind any of the heads. Be aware
that th e path of the sun is changing
throughout the year.
6 Eye safety
There are no two installation spots of the same kind, the buildings or structures, the
available space and the accessibility of the place will be different in each case.
Nevertheless, as a gene ral rule it is very important to select the installation site so
that nobody can look directly into the transmitter. For this reason place the head
either so high (on the side wall of the building) or so close to the edge of the building
(on a parapet on t he rooftop) that no person can approach it accidentally and can get
into the beam path. Set up barriers if necessary and put warning signs at prominent
places.
The laser heads are provided with all labels and hazard warnings required by the
laser standard. There are warning labels on both the left and right side of the
protective cover next to the optical window and there is a warning and an informative
label on the rear side of the laser head.
