RAD-...-IFS
40 / 198
PHOENIX CONTACT 105542_en_05
4.6.3 Data transmission rate of the wireless interface
The range is an important parameter for industrial wireless applications, especially for out-
door applications. Even in cases where long ranges do not have to be covered, good
receiver sensitivity enables transmission in harsh outdoor conditions, e.g., when there is no
direct line of sight.
The receiver sensitivity determines the signal amplitude which can just about be received
by the wireless module. The lower the data transmission rate of the wireless interface, the
higher the receiver sensitivity and therefore the range.
You can cover distances in the kilometer range using the wireless module if the following
conditions are met:
– Suitable gain antennas are used
– Line of sight
– Adherence to the Fresnel zone
If you reduce the data transmission rate, obstacles such as walls or trees can be penetrated
much better. Please note, however, that the delay time increases when the data rate is
reduced.
Adjust the data transmission rate of the wireless interface to the respective application
using the PSI-CONF software.
Default setting:
– 2.4 GHz wireless modules = 125 kbps
– 868 MHz wireless modules = 9.6 kbps
Table 4-4 Data transmission rate of the wireless interface, 2.4 GHz
Data transmis-
sion rate
Typical receiver
sensitivity
EIRP
(max. radiated
power)
Potential distance
with line of sight and
12 dB system reserve
250 kbps -93 dBm 20 dBm
(Europe: 19 dBm)
1000 m
125 kbps -96 dBm 20 dBm
(Europe: 18 dBm)
3000 m
(Europe: 2000 m)
16 kbps -106 dBm 20 dBm
(Europe: 11 dBm)
5000 m
(Europe: 3000 m)
Table 4-5 Data transmission rate of the wireless interface, 868 MHz
Data transmis-
sion rate
Typical receiver
sensitivity
EIRP
(max. radiated
power)
Potential distance
with line of sight and
12 dB system reserve
120 kbps -103 dBm
27 dBm
10 km
60 kbps -104 dBm 15 km
19.2 kbps -111 dBm 18 km
9.6 kbps -114 dBm 20 km
1.2 kbps -122 dBm 25 km
To Next Page
Loading...
Need help?
General
