MRV Communications, Inc. – Installation Manual
29
Figure 2.10: Extended Wall Mounting (using JMP and
MO62C)
Figure 2.11: Angle Bracket Mounting (using JMP and
M001)
Transmitting through a Window 1. Determine the number of surfaces the beam transits or is reflected
from, the reflectivity of each surface, and
condensation/precipitation collection areas.
2. Use the data below to determine whether the light beam
attenuation is acceptable.
4% attenuation for each surface of light reflection.
15% attenuation for a double pane window.
Attenuation due to tint in windowpane must be taken into
consideration in choosing the right TereScope model. (The %
attenuation depends on the tint and must be measured.)
3. Ensure that the angle of incidence3 of the beam striking the
windowpane is between 1º and 45º.
Note
On high buildings, for indoor window installation, the user should consider
that occasionally the window-cleaning elevator might block the link beam.
Figure 2.12 shows the arrangement for transmitting through a window
2Angle which the light beam makes with the perpendicular to the windowpane
Figure 2.12:
A
rrangement for transmitting through a windo
w
.