INSTALLATION:
Once you have installed the antennas on the dome and master unit. You need to aim
the antennas so they are aligned with each other and they both have the same polarity. If
the antennas are too far away for visual alignment or there is obstacle in the way, please
refer to “site survey mode” listed on page 8 of this manual. Figure 2 shows some correct
and incorrect methods of aligning the antennas. The 2.5dbi antenna is considered omni
directional. They are designed so the radio wave will project out from the sides of the
antennas. The radio wave pattern will resemble a doughnut. Because of this patter you
Number of Pan and
tilt unit
DIP Setting
Antenna
Channel
Polarization
Frequency
1
All Off
11dBi
Auto 1-12
Vertical or Horizontal
903-925 MHz
RIGHT
RIGHT
WRONG!
WRONG!
should never try to point the ends of the antenna directly toward one another or directly
away from one another. The 11dbi antennas are directional. They are designed so
the radio wave will project directly out the front of the antenna. Because of this you
should always point the 11dbi antennas directly at each other and never point them
away from each other. For a maximum range point-to-point (one unit). Videolarm
recommends utilizing the auto-channel selection mode and maximum gain of 11dBi.
Please refer to chart below.
WRONG!
RIGHT
WRONG!
Do
not
aim the 2.5 dbi antenna directly at
each other.
RIGHT
RIGHT
Figure 2
