Operation Manual

Trouble Shooting
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5.2 NMEA Test
The NMEA test menu is accessed from the User Set
Up Menu (page 34). It provides you with status
information of the different NMEA messages used in
the system.
Decoding
The incoming signals are decoded according to a built
in priority table.
Cross Track and bearing information is taken from the
NMEA messages with highest priority.
One of the following codes will be displayed:
--- No data or no NMEA sentence containing
the message needed 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. One or more datafields are empty
c. Wrong contents in datafield(s)
Check status and set up of data source.
NMEA signal monitor
Close to the NMEA terminals in the junction unit you
will find a green LED. A flickering LED indicates that
a NMEA signal is received. It does not, however,
qualify the contents of the message.
NMEA hardware test
Refer to next page, System Data Menu.
- SETUP -
XTE ---
BRG ---
BRG POS - WP
SOG/COG ---
WIND ---
BWW ---
POS ---
NMEA TEST?
TOP
NMEA TEST?
NMEA TEST?
NMEA TEST?
NMEA TEST?
NMEA TEST?
NMEA TEST?
NMEA TEST?
SPEED ---
WATER speed
NMEA TEST?
DEPTH ---
Robertson