Ray Unit Mounting To The Antenna - RACOM RAy3 User Manual

Installation

4.3.2. RAy unit mounting to the antenna

Each antenna allows RAy unit to be mounted on it with different polarization:
• horizontal TX polarization
• vertical TX polarization
Fig. 4.7: Horizontal and vertical TX polarization – see the arrow sign
In all cases mount the unit with the connectors facing downwards at an angle.
Note
RAy3-17 and RAy3-24 links need one unit to be installed with vertical polarization and the
other unit with horizontal polarization because these units use cross polarization.
Fig. 4.8: RAy3 unit with antenna (left-side mounting and horizontal polarization)
RAy unit is fixed to the antenna by 4 pcs M8×30 (Allen) screws, which are part of the delivery of each
antenna or each mounting kit. Those should be partially unscrewed so that the unit can slide on to
them.
Then check whether the "O" ring is correctly fitted on the antenna pin and make sure it is not damaged
and has been lubricated with grease – see Section 4.3.1, "Lubrication of the antenna pivot" above. If
O-ring is injured or damaged, please exchange it immediately for a new one (size 22x2 mm, type
'FPM80'), otherwise moisture and/or dust can leak into the waveguide and emitter. It may eliminate
several dB of signal and cause a corrosion.
Then remove the protective plastic cover from the central pin of the antenna and fit the unit flange
(located in the center of flat part of RAy unit, across the holder) to it carefully, so there is no possibility
to damage the "O" ring. Once the RAy unit is plugged to the antenna pin, turn RAy clockwise so its
56 RAy3 Microwave Link – © RACOM s.r.o.