Thales MobileMapper Beacon User Manual page 26

User manual
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Note - If you see '-100' at
any point in the SNR or
SS fields, this just means
that the receiver is
changing frequency or
data rate of the signal
automatically. This will
not happen in when the
system has been tuned in
manual mode by select-
ing the frequency or sta-
tion name.
22
If you are able to communicate with the receiver with the
Configuration Utility, you know the receiver is functioning
in some capacity. The next step is to monitor the signal
strength. If you find that the signal strength is very close to
zero or negative, this indicates the possibility of an antenna
failure.
If you find the signal strength is higher than approximately
10 dB, the antenna should be functioning correctly. The next
step is to determine what is causing reception problems. It
will either be environmental noise or weak signal. If it's a
noise problem, the signal strength will likely be high. For ex-
ample, if you see an SS value of say 50 dB, and an SNR of
5, you can be assured that the environment is jamming the
reception of the signal. There's not much that can be done in
a situation like this unless you can identify the source of
noise. Sometimes this takes a bit of looking around your en-
vironment to determine.

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