NMEA 0183 interface
For information about boat speed, to be presented on
an instrument and in the EVC display, a boat speed
signal must come from a GPS receiver or similar. An
NMEA interface must be installed to supply the infor-
mation to the EVC system. The signal coming from
the GPS must comply with NMEA 0183. The NMEA
interface will not provide any information to an exter-
nal display.
NOTE! Only one NMEA interface per boat is allowed.
NMEA messages
Speed over ground.
The ”speed over ground” data will be sourced from
NMEA 0183 RMC or VTG message.
Speed through water.
The ”speed through water” data will be sourced from
NMEA 0183 VHW message.
NOTE! "Speed over ground" has the highest prior-
ity compare to "speed through water". "Speed over
ground" is shown when both parameters are avail-
able.
IMPORTANT! The "speed" function must be
"ON" in the EVC system display.
It is not allowed to install both an NMEA 0183
interface and an NMEA 2000 interface in the
same boat.
The NMEA-interface must be connected to the HCU
X5 (yellow) connector. When a display is connected
to the system use a Y-split cable and the MULTILINK
BREAKOUT connection.
In a twin engine installation the sync. cable shall be
connected to the MULTILINK connection.
If a speedometer is used it should be connected as
all other gauges.
The LED on the NMEA-unit will show differ-
ent flashing sequences to define different functions.
Complete and confirm the connections in the follow-
ing order.
Continuous light = electrical power supply but no
NMEA connection established. The NMEA-unit could
be incorrectly connected .
3-pulse blink = electrical power supply and NMEA-
data connection established and confirmed.
Blink = electrical power supply, NMEA data connec-
tion and CAN-bus connection established and con-
firmed. Function is correct.
IMPORTANT! A MULTILINK BREAKOUT con-
nection should never be left open (not connect-
ed). In such a case, disconnect the Y-split cable.
Sync.
cable
(twin installation)
NMEA 0183
EVC System
Display
X5
MULTILINK
MULTILINK
MULTILINK
BREAKOUT
MULTILINK
BREAKOUT
MULTILINK
BREAKOUT
Y-split
To instru-
ments
MULTILINK
Y-split
Y-split
EVC System
Tachometer
Early
design
Gray (low, ground)
Yellow (high,
NMEA data)
NMEA 0183
Gray (low, ground)
Yellow (high,
NMEA data)
68
Installation procedure, helm EVC-C
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