Raymarine L1250D, Owner'S Handbook Manual

Page: 62 / 246

2-30 HD Series Fishfinders
Se
aT
alk
an
d NM
EA
In
Figure 2-18: SeaTalk Connector
Note:
1. The display does not supply 12 V via the SeaTalk connector, nor does the
SeaTalk connector require 12 V to operate.
12 V is required for other SeaTalk units (except where SeaTalk is con-
nected only between two
hsb
2
displays).
2. If you are connecting an active compass to the fishfinder, the NMEA input
has priority. You should, therefore, use an NMEA input channel (see Power
and NMEA Input Connection) rather than the SeaTalk interface, unless the
compass only has a SeaTalk output.
To connect the display unit to the SeaTalk bus, connect a standard SeaTalk
cable between the SeaTalk connector on the rear of the display and a SeaTalk
instrument or the SeaTalk bus.
Standard SeaTalk cables are available in a range of lengths (part numbers
D284 to D287). Cables for connecting to SeaTalk units with round connectors
are also available (part numbers D187 or D188). See
Section 2.2 for further
details .
NMEA 0183
The NMEA 0183 Data Interface Standard was developed by the National
Marine Electronics Association of America. It is an international standard that
enables equipment from many different manufacturers to be connected
together and to share information.
The information is passed in “sentences”, each of which has a three-letter
sentence identifier. When you check to see if one item will “talk” to another,
make sure that the two items both use the same sentence identifiers.
Pin No. Function Color
1 +12 V Red
2 0 V Shield
3 Data Yellow
1. Red (No internal connection)
2. Screen (0V)
3. Yellow (Data)
SeaTalk In/Out
D3232-4
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