2: System and RF Planning
24
Verint Video Intelligence Solutions
The S4200 automatically adjusts the transmission speed with the current RF conditions.
TPC
If the country of operation of the S4200 device requires conformity to the TPC (Transmit
Power Control) rules, the maximum EIRP (effective isotropic radiated power) is reduced by
3 dBm from the allowed maximum value; for example, if the maximum EIRP is 30 dBm in
the band and region of operation, the maximum EIRP in the device will be set to 27 dBm.
The combined transmission power of the device and its antenna must not exceed this
maximum value. For that reason, you must specify the antenna gain during configuration;
the device will automatically take it into account and adjust its own transmission power
accordingly at startup. This adjustment is done in all wireless devices (masters and slaves).
To meet local regulations, you must use only antennas that conform to the requirements
specified in the “Compliance” appendix on page 136.
DFS
In countries following the DFS (Dynamic Frequency Selection) regulations, frequency
channel selection is performed by the master S4300 device. Frequency channel selection
can be automatic (default) or manual; manual selection allows a better RF planning.
The radar detection mechanism (including channel availability check and non-occupancy
period) can be performed on all wireless devices (master and slave); it also allows for
better
RF planning and optimal wireless network performance.
The procedure is the same
regardless of the type of frequency channel selection.
You should start the master first, then power the slave when the other device is in normal
operation.
6 Mbps
4.7 Mbps
4.6 Mbps
4.6 Mbps
9 Mbps
6.8 Mbps
6.7 Mbps
6.7 Mbps
12 Mbps
8.5 Mbps
8.5 Mbps
8.4 Mbps
13.5 Mbps
9.5 Mbps
9.4 Mbps
9.3 Mbps
Note: DFS is required only in the 5 GHz band.
Note: To minimize the false radar detection problem in colocated systems using adjacent
frequency channels, see page 29.
Physical Bit
Rate
Throughput for a
3-Mile (5 km)
Distance
Throughput for a
9.3-Mile (15 km)
Distance
Throughput for a
15.5-Mile (25 km)
Distance
