Raymarine L1250DRC, Owner'S Handbook Manual

Page: 56 / 246

2-24 HD Series Fishfinders
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2.9 Integrated Systems
hsb
2
Plus and HD Series displays can be linked to other equipment to transfer
data as follows:
• A second display, either CRT or LCD, can be connected via
hsb 2
(and
SeaTalk) to repeat fishfinder, chart and/or radar information at a remote
location.
Note: If you have an integrated system with a Pathfinder Plus radar mas-
ter display that includes MARPA as a primary function, MARPA function-
ality is available on the LCD repeater display.
• Data can be received via SeaTalk or NMEA, some of which will increase
the functionality of the display. Other data can be viewed on the display.
• Data can be transmitted via SeaTalk and NMEA to enhance other equip-
ment.
• Some incoming data can be converted across the communication link and
re-transmitted.
Power for External Equipment
External equipment cannot be powered from the display’s SeaTalk
interface.
It must be powered from the ship’s supply or via a SeaTalk bus.
Ensure correct polarity of the SeaTalk connection.
For systems where the ship’s power source is 24 V only, you may need to
install a 24 V to 12 V DC converter. This is only necessary if the products
being connected to the display are:
• SeaTalk compatible (for example: compass, GPS, and instruments) and
there is no existing SeaTalk bus
• NMEA compatible, but operate only from 12 V (for example: compass,
GPS, and some navigators)
The DC-DC converter must conform to the following specification:
Table 2-2: DC-DC Converter for External Equipment
Input 21 to 32 V DC
Output 13.6 V DC, isolated
Load Continuous current rating, in excess of required load
81213_1.book Page 24 Monday, March 17, 2003 1:14 PM