46
Polarize Antennas the Same Way
Mount the antennas with matched polarity markings pointing up. The antennas in the figure
below are polarized vertically (note the “VERT POL” marking on both units is pointing up).
Test the Reception of the System
Once you have your system set up, start your DMX source (console, DMX tester, etc.), initiate
wireless DMX broadcasting, and check the received signal strength at the receiver. You can do
this using the visual signal strength indicators on your receiver (which may be LEDs or a read
out on an LCD screen, depending on your receiver), or you can use RDM to get a more specific
value in dB from the Receiver.
Adjust the Height and Rotation
Adjust height and rotation of the antennas to optimize reception.
Check for Obstacles between the Antennas
One of the most insidious obstacles to RF is the human body. Be sure and consider your
audience location when setting up your system, and locate the antennas so that audience
members won’t come between the antennas.
As you are setting up and adjusting your system,
note what happens to received signal strength when you grasp an antenna to adjust it.
Another
common obstacle is glass; some window glass will block radio waves. If you want to broadcast
out a window, use a cable to put the antenna outside of the window.
Test both Vertical and Horizontal Polarity
Sometimes, one will work better than the other because of environmental conditions or due to
the presence of other wireless systems in the area. If there are other 2.4GHz wireless systems
operating within range that are interfering with your SHoW DMX system (or being interfered with
by your system) you may be able to significantly reduce that interference by changing the
polarity of your system. Radio systems are frequently setup by default with vertical polarity, so
changing your system to horizontal polarity may significantly improve things for all of the
systems within range.
Содержание SHoW DMX Neo 5701
Страница 9: ...9 5792 SHoW DMX Neo Radio Module CE Declaration of Conformity ...
Страница 21: ...21 Antennas ...
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Страница 24: ...24 Antenna Connectors These connectors are referred to in the table above ...