HDMI Video Considerations

NOTICE

To prevent corrosion due to moisture, you must use Garmin® GPSMAP® accessory cables when connecting the chartplotter to the video source or display. Do not connect a media player stick directly into the back of the chartplotter. Using different cables or connecting a media player stick into the back of the chartplotter voids your warranty.

These chartplotter models allow video input from HDMI® video sources, such as a Chromecast™ device or a Blu-Ray™ player.

You can view HDCP content on an external monitor that supports industry HDCP standards.

HDMI video is shared across the Garmin BlueNet™ network and across the Garmin Marine Network, but it is not shared across the NMEA 2000® network. HDCP content cannot be shared across the Garmin network to GPSMAP 8000 series or older chartplotters. HDCP content can be shared by a GPSMAP 9000 series chartplotter only to other GPSMAP 9000 series chartplotters connected to the Garmin BlueNet network.

The Garmin GPSMAP HDMI accessory cable is 4.5 m (15 ft) long. If you need a longer cable, you should use an active HDMI cable only. You need an HDMI coupler to connect the two HDMI cables.

You can use an adapter cable to power a media player stick using a USB port on the chartplotter. The USB DRD port can supply up to 2.5 W to power a media player stick. The USB port can supply up to 4.5 W to power a media player stick

You must make all cable connections in a dry environment.


Block diagram

Devices

Item

Device

1

HDMI source, such as a Chromecast device

2

GPSMAP chartplotter

3

Monitor, such as a computer or television

Connections

From

To

Cable

1

HDMI source's HDMI OUT port

2

Chartplotter's HDMI IN port

Garmin HDMI Cable

3

Chartplotter's HDMI OUT port

4

Monitor's HDMI IN port

Garmin HDMI Cable

5

Chartplotter's USB DRD or USB port 1

6

HDMI source's USB port

Adapter cable to power the HDMI source, if possible (2.5 W or 4.5 W maximum depending on chartplotter model and USB port)

1 GPSMAP 9000xsv chartplotters have only a USB DRD port, capable of providing a maximum output of 2.5 W.
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October 2025