Raymarine DSM30 - Manual (Page 18)

18 DSM300 and DSM30 Installation Manual
Ground Connection
It is important that an effective RF ground is connected to the system. A single
ground point should be used for all equipment. You can ground the sounder
module by connecting the drain wire (shield) of the Power Input cable to the
boat’s RF ground. If you need to extend the wire, the extension wire should be an
8 mm braid or AWG 10 multi-stranded cable. If your boat does not have an RF
system, connect the drain wire to the negative battery terminal.
The DC system should be either:
• Negative grounded, with the negative battery terminal connected to the
boat’s ground.
• Floating, with neither battery terminal connected to the boat’s ground.
This system is not intended for use on “positive” ground vessels.
1.7 Display Configuration
The DSM must be connected to an hsb 2 PLUS Series, C Series or E Series display
unit to show echo sounder data. How you configure your sounder module
depends on the type of display to which you will be connecting it.
Configuring E Series Displays
The E Series system operates on the SeaTalk hs network. E Series cables have an
RJ-45 modular connector that attach to the “SEATALK HS” connector on the
sounder module. See “Cable Options“ on page 10 for a list of available E Series
cables. When the DSM is used with a single display, connection is made via a
SeaTalk
hs Crossover Coupler.
Configuring an E Series System - Single Display
E Series Display
Sounder Module
SeaTalkhs Cable SeaTalkhs Cable
Crossover Coupler
E55060
D9603-1