HD-MAX Echo Sounder User Guide
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Figure 18-2 GPS information
In a satellite distribution map, the number in the pie chart is the satellite
number. The green pie refers to satellites with better data quality (SNR>40);
the yellow pie refers to satellites with poor data quality; and the red pie refer
to satellites with signal failure. In satellites information list, satellite number,
azimuth, altitude angle, L1 SNR, L2 SNR and other information of the
satellite are displayed.
Difference ages reflect the delay after GPS receiving the difference
information. Generally, the difference age of RTK fixed solution is 1~2, and
that of beacon receiver or SBAS is less than 6.
Attention
: GPS receiver shall output the satellites information data
before checking satellite information. If there is no satellite
distribution chart nor satellite information list available, please send
out GSV mainboard command at [DataDebug] to make the GPS
export satellites information data.
Data Debugging
Click [DataDebug] to switch to operation interface of serial port data
debugging. Check the data information exported from the GPS and can send
commands to GPS host through a serial port. The data received at the serial
port can be shown as in texts or hexadecimal values. Select information
