Item
GMR 18 xHD/18 HD+
GMR 24 xHD
233 mm (9
3
/
16
in.)
233 mm (9
3
/
16
in.)
176.7 mm (6
15
/
16
in.)
245.4 mm (9
11
/
16
in.)
141.5 mm (5
9
/
16
in.)
141.5 mm (5
9
/
16
in.)
190 mm (7 ½ in.)
258.5 mm (10
3
/
16
in.)
139.2 mm (5 ½ in.)
207.7 mm (8
3
/
16
in.)
141.5 mm (5
9
/
16
in.)
141.5 mm (5
9
/
16
in.)
227.5 mm (8
15
/
16
in.)
296.2 mm (9
11
/
16
in.)
Open-Source Software License
To view the open-source software license(s) used in this product, go to
developer.garmin.com/open-source/linux/.
Installation Troubleshooting
Symptom
Possible Causes
The radar does not
turn on. The status
LED is not on.
• The power cable may not be connected correctly to the
device or to the battery. Check all connections.
• The inline fuse may have blown. Check the fuse and replace
it if necessary.
• The wire gauge used to extend the power cable may be too
small for the length of the extension. Check the table
provided in the Power Cable Extensions section of these
instructions to make sure the correct wire gauge is used
(Power Cable Extensions, page 3).
The radar is not
available on the
Garmin device or on
devices connected
to the Garmin
Marine Network.
• The radar may not be powering on. Check the status LED.
• The device software may not be up-to-date. Update the
software on the device or on the Garmin Marine Network.
• The network cable may not be connected correctly to the
device or to the Garmin Marine Network. Check all
connections.
• If a field-installable network connector was used, it may have
been installed improperly. Check the connector.
The status LED is located on the product label, and can help troubleshoot
installation problems.
Status LED Color and
Activity
Radar Status
Solid red
The radar is getting ready for use. The LED should be solid
red briefly and change to flashing green.
Flashing green
The radar is operating properly.
Flashing orange
The radar software is being updated.
Flashing red
The radar has encountered an error. Contact Garmin product
support for assistance.
Contacting Garmin Support
• Go to support.garmin.com for help and information, such as product
manuals, frequently asked questions, videos, and customer support.
• In the USA, call 913-397-8200 or 1-800-800-1020.
• In the UK, call 0808 238 0000.
• In Europe, call +44 (0) 870 850 1241.
© 2016–2020 Garmin Ltd. or its subsidiaries
Garmin
®
and the Garmin logo are trademarks of Garmin Ltd. or its subsidiaries,
registered in the USA and other countries. GMR
™
is a trademarks of Garmin Ltd. or its
subsidiaries. These trademarks may not be used without the express permission of
Garmin.
© 2016–2020 Garmin Ltd. or its subsidiaries
support.garmin.com
