HM Electronics Inc XCVR2G4A Manuel D’Utilisation
User Guide | FreeSpeak II™
Page 19
3.2.3
Determining coverage areas
After the transceiver/antennas and splitters have been initially set up proceed to
test the coverage areas and re-locate antennas and splitters, if necessary, for
optimal coverage.
test the coverage areas and re-locate antennas and splitters, if necessary, for
optimal coverage.
The following figure illustrates some FreeSpeak II coverage scenarios.
Figure 3-3 Coverage areas for FS II TAs
Note:
Cells can be completely overlapped for density (by co-locating multiple antennas).
Cells can be overlapped at boundaries (increases radio coverage).
For most working systems Clear-Com uses a ratio of 3-4 users per antenna. This
is due to system losses.
Cells can be overlapped at boundaries (increases radio coverage).
For most working systems Clear-Com uses a ratio of 3-4 users per antenna. This
is due to system losses.
To determine coverage areas:
1)
When the Base station, splitter(s), and transceiver/antennas have been
placed and wired, turn on an FS II beltpack (assuming that it has been
registered with the Base station) and walk the coverage area.
placed and wired, turn on an FS II beltpack (assuming that it has been
registered with the Base station) and walk the coverage area.
Alternatively, use the “site survey” mode on the beltpack (see “Doing a Site
Survey to Determine Coverage Areas” below). It is often best to begin with one
antenna in place, and then place additional units to enhance coverage.
Survey to Determine Coverage Areas” below). It is often best to begin with one
antenna in place, and then place additional units to enhance coverage.
•
Each antenna covers a
certain range or cell
size.
certain range or cell
size.
•
Maximum line of sight
range: up to 500m
(1640ft).
range: up to 500m
(1640ft).
•
Typical range: 50 -
150m (160 - 490ft).
150m (160 - 490ft).
•
Each antenna covers 5
full duplex users
(beltpacks).
full duplex users
(beltpacks).
•
If two or more
antennas are placed
in the same area
the cell size is the
same.
antennas are placed
in the same area
the cell size is the
same.
•
However, cell
density has
increased to handle
up to 10 users in
the same area.
density has
increased to handle
up to 10 users in
the same area.
•
If antennas are placed
across the site then this
increases radio coverage
area.
across the site then this
increases radio coverage
area.
•
Beltpacks can roam
from one antenna to
another and stay in
constant
communication.
from one antenna to
another and stay in
constant
communication.