FELCOM 82
H3-31
Position
Own ship’s position received from the navaid; Acceptable NMEA sentences:
GGA (V.02), RMC, GLL, RMA, and ZDA; Priority: GGA>RMC>GLL>RMA;
Invalid data is not received.
Input data
- NAV DATA (NMEA/NONE)
On the terminal unit, NMEA or NONE appears. On the handset, NAV blinks
when no NAV data or manual position data is input and nothing appears when
data is input correctly.
- GYRO (OK/NONE/HOLD)
On the terminal unit, OK or NONE appears. On the handset, GYRO blinks
when no gyro data is input and nothing appears when data is input correctly.
During the HOLD, GYRO appears on the handset.
TX/RX level
- Tx EIRP Level (33/29/25)
Indicates Effective Isotropic Radiated Power (EIRP) from the antenna. The
output of the HPA is sent to the SYS CPU via the PCU to calculate EIRP level.
The NCS (LES in case of TLX) assigns the EIRP according to the spot beam to
be used. Each call from the ship includes azimuth and elevation data of the
antenna.
LNA Chassis
HPA
Duplexer
Antenna
LAN
PCU
DET
Power
CONT
EIRP MONPower Control
FSK
Tx RF
Q5U1
EIRP
33dBW
29dBw
25dBW
- Tx RF Level (12 to 38)
The output of the RF CON board, +7 dBm to +11 dBm is picked up and sent to
the SYS CPU. The figure below shows TX RF level (dBm) versus TX RF level
indication. The reading is 12 to 38 normally. The error messages #0160 and
#0162 are related to the RF CONV circuit.
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