6. Viewing Radio Statistics
6.3 Antenna Reflected Power
This is a measurement of the transmitted power that is reflected back into the radio from
mismatched antennas or cables, or loose connections between the radio and antenna.
l
A reading of:
l
0 to 5 is good.
l
5 to 20 is marginal.
l
20 or higher indicates that the connections should be inspected for loose connections and
cable quality.
l
30 or higher indicates a definite problem in the system.
The most likely reason for a higher
Antenna Reflected Power
reading is a cable issue between
the radio and the antenna: loose connections, cable kinks, breaks in cable shielding, moisture in
the fittings or connections, etc.
Less commonly, a high
Antenna Reflected Power
reading can indicate a hardware problem
with the radio itself, such as a damaged RF connector. Lastly, a high reading may indicate a
problem with the antenna itself, although antenna problems are the least likely indicator.
6.4 Master-Slave Distance
The physical distance between the slave radio and the master radio in the network.
This distance is most accurate at a distance greater than 2.5 miles.
6.5 Noise Level
The
Noise Level
indicates the level of background noise and interference at this radio and at
each of the Repeaters in the link. The number is an average of the noise levels measured at each
frequency in the radio’s frequency hop table.
The individual measurement values at each frequency hop channel are shown in the frequency
table.
If viewing statistics in the terminal interface, press <Enter> when the
Radio Statistics
menu
appears to view the frequency table.
FreeWave Recommends
: Ideally, noise levels should be below -120 dBm. The difference between
the average signal level and average noise level should be 26 or more.
l
Noise levels significantly higher than this are an indication of a high level of interference that
may degrade the performance of the link.
Page 96 of 131
LUM0008AG Rev Sep-2015
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