MRC DRS2000HS, Руководство пользователя и техническое руководство

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Installation 4-8 DRS2000HS/6000HS User and Technical Manual
mounted on a tower or a mast, the antennas must be mounted
vertically (all parallel to each other) and mounted at a similar
height on the tower or mast.
The separation distance between the antennas must be
measured from the center lines of the antennas as shown in
Figure 4-3 . You should initially install the antennas at the
recommended minimum separation distance. If necessary,
increase the distance by quarter wavelengths.
Figure 4-3: Antenna Separation and Alignment
4.9.4 Installing Block Downconverters and
Antennas
Each low-noise block downconverter (BCD) assembly includes a
block downconverter, universal pole mounting bracket, and a
heavy duty band clamp. The BCDs can be installed either on a
horizontal or a vertical pole assembly.
MRC recommends attaching the downconverter directly to the
antenna. When you attach the antennas directly to the BCD RF
INPUT connectors, then you must mount the antennas in the
same physical plane, that is, one antenna should not be tilted
with respect to the other antenna. See
Figure 4-3 .
To install the BCDs on a mounting pole when the antennas are
connected directly to the BCDs, perform the following steps for
each pair of antennas and BCDs:
1. Fasten the first BCD onto the mounting pole and
secure it firmly in position using the mounting bracket
and heavy duty band clamp. See
Figure 4-4 .
Figure 4-4: Mounting Downconverter on Pole
2. Connect the first antenna securely to the BCD RF
INPUT connector.
RF input
Heavy duty
band clamp
Universal pole
mounting bracket
Antenna
Block
downconverter