Instruction manual

Trouble shooting
20220505H 115
One of the following codes will be displayed:
--- No data or no NMEA sentence containing the data
needed available at the input port.
OK Valid data found
INV Message with invalid information.
FRM Message has format failure such as
a) Incorrect check sum
b) Wrong contents in datafield(s)
--- XTE ---nm
OK BWW 270
INV BRG POS/WP ---
OK POS/LAT N 58 33.222'
OK POS/LON E 10 50.013'
NMEA DATA
OK COG 270
INV SOG ---Kt
OK WIND R 45.3
FRM SPEED ---Kt
INV DEPTH ---m
NMEA DATA
If data are missing or invalid, perform the following:
• Check the NMEA signal monitor (see below)
• Check the interface setup in the Installation Menu (page 94)
• Check the navigator setup and make sure it is transmitting
appropriate NMEA data.
• Perform a NMEA (hardware) test as per below.
NMEA signal monitor
Close to the NMEA terminals in the junction unit you will find a
green LED marked “RX”. A flickering LED indicates that a
NMEA signal is received. It does not, however, qualify the
contents of the message.
Note ! Do not mix this “RX” LED with the LED marked “TX”. The
“TX” LED will always be lit/flickering when the autopilot is on.