HM Electronics Inc XCVR2G4A Manuel D’Utilisation
User Guide | FreeSpeak II™
Page 112
For more information on the coverage range of the FS II-TA, see 4.2.3
Determining coverage areas.
Determining coverage areas.
Note:
For most working systems, Clear-Com recommends a ratio of 3-4 users per
antenna due to system losses.
antenna due to system losses.
9.1.5
Coverage areas under various conditions
Just as with any other product communicating via radio waves, the effective
distance between the beltpack and the transceiver/antenna (the range) will differ
depending on the particular environment in which it is being used. Radio waves
can be attenuated by walls, floors, ceilings, trees, shrubbery, the human body
(such as an audience), and numerous other objects. They can be reflected and/or
stopped by metallic objects such as structural beams, safety doors, lighting
equipment and truss, bodies of water, and so on.
distance between the beltpack and the transceiver/antenna (the range) will differ
depending on the particular environment in which it is being used. Radio waves
can be attenuated by walls, floors, ceilings, trees, shrubbery, the human body
(such as an audience), and numerous other objects. They can be reflected and/or
stopped by metallic objects such as structural beams, safety doors, lighting
equipment and truss, bodies of water, and so on.
Under ideal conditions, the maximum range between an FS II beltpack and a
transceiver/antenna is 500 meters. Typical distances are between approximately
50 meters (about 160 feet) and 150 meters (about 485 feet), depending on the
particular environment.
transceiver/antenna is 500 meters. Typical distances are between approximately
50 meters (about 160 feet) and 150 meters (about 485 feet), depending on the
particular environment.
As the transceiver/antenna requirements for a particular installation are being
determined, keep in mind both the number of beltpack users who will be working
in a particular area (based on the five-beltpack capacity of each
transceiver/antenna), and the layout and potential RF attenuating and reflecting
items in the location. Be conservative in distance estimates to make sure that
enough transceiver/antennas are included to provide the necessary coverage for
the installation. Remember that additional transceiver/antennas may be added to
a Base station, up to a maximum of 10.
determined, keep in mind both the number of beltpack users who will be working
in a particular area (based on the five-beltpack capacity of each
transceiver/antenna), and the layout and potential RF attenuating and reflecting
items in the location. Be conservative in distance estimates to make sure that
enough transceiver/antennas are included to provide the necessary coverage for
the installation. Remember that additional transceiver/antennas may be added to
a Base station, up to a maximum of 10.
9.1.6
Transceiver/antenna setup rules and tips
Keep the following general rules and tips in mind:
•
Keep antennas high (typically, though lower placements away from
interfering objects can at times be beneficial) and line-of-sight.
interfering objects can at times be beneficial) and line-of-sight.
•
Keep them away from larger metallic objects and surfaces, and from
lighting truss.
lighting truss.
•
Antenna coverage is circular so put the transceiver/antennas in the center
of the area in which coverage is required.
of the area in which coverage is required.
•
When overlapping the coverage zones of transceiver/antennas to create
larger continuous coverage areas, test the in-between areas with a
beltpack for potential areas of low RF signal; adjust the positioning of the
antennas as needed.
larger continuous coverage areas, test the in-between areas with a
beltpack for potential areas of low RF signal; adjust the positioning of the
antennas as needed.
•
Because of potential body shielding during movement, it is useful to place
two transceiver/antennas in different locations within larger working areas
to minimize low-level signals and potential signal dropouts.
two transceiver/antennas in different locations within larger working areas
to minimize low-level signals and potential signal dropouts.