GARMIN GC 12 Marine Camera Installation Guide

June 7, 2024
Garmin

GC™12
INSTALLATION
INSTRUCTIONS

Mounting Considerations

You can mount the camera upside-down or sideways. You can reverse the camera image to use in rearview mode. See your Chartplotter owner’s manual for instructions.
You should mount the camera in a location where it is

  • not an obstacle in doorways or walkways.
  • not exposed to extreme temperatures.
  • not exposed to gas or oil.
  • not exposed to radioactivity.
  • not facing direct sunlight or a direct reflection of sunlight.

Tools Needed

  • 1 A fuse or circuit breaker
  • Drill and 2 mm (1/16 in.) drill bit

Mounting the Camera

  1. Secure the template1 to the mounting location.
    GARMIN GC 12 Marine Camera

  2. Using a 2 mm (1/16 in.) drill bit, drill the pilot holes.

  3. Adjust the dome base to the correct orientation for your desired camera tilt.

  4. Secure the dome base to the mounting location using the included tapping screws 3 .

  5. Insert the camera 4 into the dome base.

  6. Secure the set screws 5 into the dome front 6 using the included wrench.

Installation Considerations

You must connect the camera power wire to the battery through a 1 A fuse or circuit breaker. If you do not use a fuse or circuit breaker, the camera can malfunction.
Some Garmin® GPSMAP®  chart plotters have a built-in CVBS video encoder. Video from the camera or cameras appears on all chart plotters on the network when plugged into a single CVBS IN port. Go to garmin.com/gc12 for a list of compatible GPSMAP chart plotters.
If you want to use more than one camera or the Chartplotter does not have a CVBS IN port, you must use an encoder.
You can add up to four cameras to one encoder and up to two encoders to the Garmin Marine Network.
NOTE: To reduce the possibility of interference, you can install a composite video ground loop isolator (not included) between the camera and any chart plotters that do not have isolated power grounds.

Installation Diagram

GARMIN GC 12 Marine Camera - Installation Diagram

1 GC 12
2 1 A fuse or circuit breaker (not included)1
3 12 Vdc power source
4 BNC to BNC coaxial video cable (not included)
5 Compatible Garmin chartplotter
6 Composite video ground loop isolator (not included)

Installation With Encoder Diagram

You can add more than one camera to your network when you use an encoder.

GARMIN GC 12 Marine Camera - Encoder Diagram

1 GC 12
2 1 A fuse or circuit breaker (required, not included)1
3 12 Vdc power source
4 BNC to BNC coaxial video cable (not included)
5 Network cable
6 Power-over-Ethernet isolation coupler (GPN 010-10580-10)
7 Garmin Marine Network cable
8 Axisa Q7424 Encoder (optional/not included)
9 Compatible Garmin chartplotter
10 Composite video ground loop isolator (not included)

¹You must connect the camera power wire to the battery through a 1 A fuse or circuit breaker. If you omit a fuse or circuit breaker, the camera can malfunction.

GARMIN GC 12 Marine Camera - fc

GUID-A4093A3F-E824-457D-BFB5-8DE2389473AC v2
January 2021

Troubleshooting

Video Does Not Appear on the Chartplotter Screen

  • Verify all cables are firmly connected.
  • Verify the video cable is connected to the camera video output port.

The image on the Chartplotter Screen is Dim or Dark

  • Verify the lens is clean. If necessary, wipe the lens with a soft, clean cloth.
  • If the camera is exposed to too much direct light, change the camera position or location.
  • Adjust the contrast on your Chartplotter. See your Chartplotter manual for instructions.

Image on the Chartplotter Screen Flickers

  • Verify the camera points away from the sun.
  • Adjust the contrast on your Chartplotter. See your Chartplotter manual for instructions.

The camera is Not Working and the Surface is Hot

  • Verify the camera is connected to an appropriate power source.

Video Image Includes Scrolling Bars on the Chartplotter Screen

  • Verify all cables are firmly connected.
  • Install a composite video ground loop isolator (not included) between the camera and any Chartplotter that does not have an isolated power ground.

Specifications

Dimensions (W x H) 50.5 x 44.3 mm (2 x 1 3/4 in.)
Weight 205 g (7.23 oz)
Operating temperature From -10 to 50°C (from 14 to 122°F)
Water rating IEC 60529 IPX71
Operating current 12 Vdc

IR off: 80 mA IR on 170 mA
Storage temperature| From -15 to 60°C (from 5 to 140°F)
Power input| From 9 to 18 Vdc
Compass-safe distance| 155 mm (6.125 in.)
Viewing angle| Vertical: 52 degrees Horizontal: 69 degrees
IR distance| 10 m (33 ft.)
Video output| 1.0Vp-p composite 75 0 composite
Resolution| PAL
Effective pixels| Vertical: 582 Horizontal: 976

© 2019 Garmin Ltd. or its subsidiaries
Garmin®, the Garmin logo, and GPSMAP® are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other countries. GC™ is a trademark of Garmin Ltd. or its subsidiaries. These trademarks may not be used without the express permission of Garmin.
Axis® is a registered trademark of Axis AB.
¹The device withstands incidental exposure to water of up to 1 m for up to 30 min.
For more information, go to www.garmin.com/waterrating.
© 2019 Garmin Ltd. or its subsidiaries
support.garmin.com

References

Read User Manual Online (PDF format)

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