Measuring Signal Performance
Edge
TM
Multipoint and Quickbridge - Hardware Installation Guide
64
:
The
Distance (m)
is calculated by assuming the 60% of the 1st Fresnal to be clear.
Effective Isotropic Radiated Power (EIRP)
In countries like USA and Canada, radio can be installed with any directional antennas gain, as there is no Effective Isotropic
Radiated Power (EIRP) limit for the application of these systems for fixed point-to-point applications in the 5.8 GHz frequency
band. In other bands and in other countries, EIRP limits may apply. In the case of EIRP limits, use the lower values of either
(P
out
- L
1
+ G
1
) or the EIRP limit, within the
Link Budget
equation. You should check this calculation in both the directions to
assure legal application. An EIRP limit is the maximum RF energy that can be transmitted as measured at the transmitting
antenna and is usually deterwmined by government regulations. For details, we recommend you to refer the
Max EIRP
values
listed under the
Wireless Interface properties
, in the
Edge
TM
-
Hardware Installation Guide
.
The figure below shows the Proxim Link Calculator, available at
http://support.proxim.com
. Refer to
Link Calculator - User
Guide
to understand:
•
How to install the Link calculator
•
How to use the Link Calculator
Figure 9-5 Proxim Link Calculator
82
54
0.8
112
1697
4.8
142
53.7
26.8
83
60
0.9
113
1904
5.0
143
60.2
28.4
84
68
1.0
114
2136
5.3
144
67.6
30.1
85
76
1.0
115
2397
5.7
145
75.8
31.9
86
85
1.1
116
2689
6.0
146
85.0
33.7
87
95
1.1
117
3018
6.4
147
95.4
35.7
88
107
1.2
118
3386
6.7
148
107.1
37.9
89
120
1.3
119
3799
7.1
149
120.1
40.1
90
135
1.3
120
4263
7.6
150
134.8
42.5
