SXblue Series User Manual
79
optimum location with respect to beacon reception. The SNR is available in the
$CRMSS and $PCSI,1 NMEA messages described in the Technical Reference
Manual.
The SNR is also a function of the installation, as it may differ between locations,
depending on the amount of local noise at each. The optimum antenna location
will be the position where your average SNR is highest. You should turn on all
accessories that you intend to use during normal operation to test the installation.
If noise is affecting performance, try to find a better location with higher SNR.
Table 3-1 below describes the general quality of reception as measured by the
SNR reading of the SXblue II-B GPS.
Table 3-1 SXblue II-B GPS Performance – SNR Reading
SNR
Reception Quality
Data Throughput
> 25
Excellent
100%
20 to 25
Very Good
100%
15 to 20
Good
Good (up to 100%)
10 to 15
Stable
Moderate to Good
7 to 10
Intermittent
Low
< 7
No Lock
No data throughput
Содержание iSXblue II+ GNSSTM
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