GMS 10 Network Port Expander Instructions
LED indicator
lights
7-pin power cable connector
weather caps 
network ports
The GMS 10 Network Port Expander lets you connect more than two chartplotters and other Garmin marine network devices to share data. Simply connect one end of the network cable to your Garmin marine network device and connect the other end of the network cable to the Expander. Then, your Garmin marine network devices will be able to share information such as weather, mapping, and sounder data as well as position information.
Contents
•GMS 10 Network Port Expander (#010-00351-00)
•Garmin marine network cable (#320-00227-00)
•7-pin power cable (#320-00023-05)
•Grommet (#252-00129-00) Use the grommet to cover holes you drill for cables.
•Optional mounting hardware kit (#K00-00123-00)
Use the kit only if you cannot mount the Expander by using the factory-drilled holes. The kit contains two brackets with two screws/nuts per bracket. Use the screws and nuts to attach the bracket to the unit. Screws to secure the Expander to your boat are not included.
Selecting a proper mount location
Mount your Expander in a location that is away from heavy foot traffic and where the network cables can easily reach your Garmin marine network devices and the Expander. If you foresee purchasing an additional Expander as you add Garmin network devices, make certain you have enough space to mount two Expanders near each other. Before you mount the Expander, consider the length at which the network cables will extend when plugged in to the Expander and allow for this extra space. If you select a mounting location that prevents you from using the Expander’s factory-drilled holes, use the brackets included in the optional mounting kit. (Instructions are included in the mounting kit.)
Connecting the cable to the network port
1.Unscrew the weather cap from a network port by turning the cap counterclockwise.
2.Connect the network cable to the network port by aligning the cable head with the opening of the network port. Use the black arrow on top of the cable head as an alignment guide.
3.Tighten the cable cap to prevent the cable from vibrating loose.
Connecting the cable to a Garmin marine network device
1.Connect the network cable to the network port that is located on your marine network device (the port is labeled “Network”) by aligning the cable head with the opening of the network port. Use the black arrow on top of the cable head as an alignment guide.
2.Tighten the cable cap to prevent the cable from vibrating loose.
Connecting the 7-pin power cable to your boat’s battery or fuse block
The GMS 10 Network Port Expander is designed to pass control signals to turn sensors (such as the Garmin marine weather/audio satellite receiver) on and off. Thus, when you power on/off a chartplotter that is connected to an Expander, all sensors that are also connected to the Expander will automatically power on/off as well. This eliminates the need for you to individually power on/off the sensors through a circuit breaker.
The 7-pin power cable includes a Red and Black wire. 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 located on the Red wire.
Maximizing data sharing among Garmin marine network devices
Use the Expander when you need to connect more than two Garmin marine network devices. For example, if you have two chartplotters and a sensor (such as the Garmin marine weather/audio satellite receiver), you can view the sensor’s information on both chartplotter screens. If you run out of connection space on one Expander, you can add another Expander to meet your data sharing needs.
Use two Expanders to allow data sharing between two chartplotters and two sensors.
Use two Expanders to allow data sharing between an even larger number of chartplotters and sensors.
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