AIS CTRX GRAPHENE Class B AIS Transponder Manual
1.9E
24
CTRX GRAPHENE Manual
The next page is the
GNSS
status
page which is a valuable tool for monitoring the built-in
GPS receiver. This tool can conveniently be used during installation to check that the GPS
antenna has been placed in a proper location for reception and that cables and connections
are properly put together and not damaged. When the transponder receives signals from the
satellites a vertical bar will appear representing the received satellite. The bar will change
colour depending on the status of the satellite. When the receiver is locked to a satellite the
bar will change from blue to green indicating that the satellite is used for navigation. If SBAS
is used the satellites involved in tracking the SBAS data will show up in yellow.
The reception quality is displayed as a C/N value (carrier to noise), which means that the
higher the value, the better the signal quality is. A mean value for a reasonable reception
quality should be not less than 30 dBHz.
Figure 16
AIS CTRX GRAPHENE GNSS Status field showing satellites being used as well as not being used plus
DGNSS satellites using SBAS.
