Installing The Gdl 30/30A - Garmin GDL 30A Owner's Manual

Installing the GDL 30/30A

Use a Network Port Expander to Connect
the GDL 30/30A to a Chartplotter
If you plan to connect your GDL 30/30A to more than
one Chartplotter, consider purchasing a Garmin GMS 10
Network Port Expander (not included). At this time, one
Port Expander allows you to connect your GDL 30/30A to
two Chartplotters. You can also use the Port Expander to
connect multiple Chartplotters and multiple sensors, as
shown above. Units are connected to the Chartplotters by
Garmin marine network cables (not shown).
Using the Grommet
Use the included grommet to cover holes you may drill in
your boat for the Garmin marine network cable.
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Installing the GDL 30/30A
To obtain the best possible performance, install the GDL 30/30A according to the following instructions.
When in doubt, seek professional technical assistance.
Step 1: Mount the GDL 30/30A
Mount the GDL 30/30A in a low-traffi c location that is preferably dry and well-ventilated. Avoid mounting
the unit where it will be submerged in liquids or exposed to extreme temperatures. If you wish to view the
blink codes (see Appendix A), (see Appendix A), be sure to mount the GDL 30/30A so that the LED is visible.
Once the location is chosen, place the unit in the desired position. Be sure to allow enough clearance for
attaching the cables. Using the unit as a template, mark the location of the four mounting holes. If needed,
additional mounting holes may be drilled in the side mounting fl anges of the unit. Secure the GDL 30/30A to
the mounting location using the appropriate fasteners.
Step 2: Connect the 7-pin power cable to your boat's battery or fuse block
Connect the 7-pin power cable (included) to the 7-pin power cable connector located on the GDL 30/30A
(it is labelled POWER). Then, connect the Red wire to the positive (+) terminal on your battery or fuse block
and the Black wire to the negative (-) terminal. Do not remove the AGC/3AG 2.0 amp fuse holder located on
the Red wire.
Step 3: Connect the GDL 30/30A to your Chartplotter(s)
Connect the GDL 30/30A to one Chartplotter by using the Garmin marine network cable (included).
Simply align the cable heads with the opening of the network port on both the GDL 30/30A and the
Chartplotter. Do not cut the Garmin marine network cable if you need to drill a hole in your boat; use
the included grommet that is specially designed to cover holes that are drilled for the the included grommet that is specially designed to cover holes that are drilled for the Garmin marine network
cable. .
Connect the GDL 30/30A to more than one Chartplotter using the Garmin GMS 10 Network Port
Expander (not included). See instructions in the GMS 10 Port Expander manual for more information.
To ensure safety, use the appropriate tie-wraps, fasteners, and sealant to secure the cable along a route and
through any bulkhead or deck.
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