Nera Inmarsat-c Service Manual page 35

5) Handling of NMEA
The external NMEA signal is connected to RF CON/CPU board via [JUNCTION] port. GPS
receiver, GN-79 (Option) is installed. The selection of the external or internal NMEA data is
set by "NAV Port" ([F8]-2: System setup).
The priority sequence of the talker is GP>TR>LC>LA>DE>OM>II>IN. The priority
sequence of the position data is GGA>RMC>GLL>RMA.
Fig.2.3.12 shows the NMEA data connection.
Fig.2.3.12 NMEA data connection
Nera C
Formatter
receiving formatter
GGA
GLL O(Ver2.0)
GSV
WPL O
VTG O
RMA O
RMB O
RMC O
MTW O
DBT O
BWC O
BWR O
VDR O
ZDA
Optional GPS receiver, GN-79
- NMEA-0183 Ver.2.3
- Receiving frequency: 1575.42 MHz
- Receiving channel/ tracking: 12 channels/Parallel - Maximum tracking satellite: 12
- UTC tuning pulse output: 1 second pulse
GPS (GN-79)
formatter output
O GPS fix data
O Geographic position, L/L
O GNSS satellites in view
Waypoint location
O Course over ground and speed
Recommended minimum specific
LOLAN-C data
Recommended minimum navigation
information
Recommended minimum specific GNSS
O
data
Water temperature
Depth below transducer
Bearing and distance to waypoint
Bearing and distance to waypoint, rhumb
line
Set and drift
O Time and date
-Datum: WGS 84
- Tracking code: C/A code
2-15
2.3 Terminal unit, IC-215
Table 2.3.2 Receivable NMEA data
Description