Question about Furuno 1833C/NT GPS Receiver

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Furuno 1833C/Dgps37 Plotter creeps

With DGPS37 in W3D mode the boat icon on the plotter arrives at a known good waypoint (sumerged pipe seen on the BB sonar). The waypoint was approached at idle speed and the boat was stopped on the waypoint. Problem is the boat icon continues to plot its position beyond the stopped boat for 10-15 seconds. Now the boat is stopped over the pipe but the boats icon, as shown by the plotter, is 100 feet beyond the pipe. All settings have been verified correct by Furuno techs.

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  • John Barry
    John Barry May 11, 2010

    The wreck is probably off on the chart. The waypoint is inaccurate. There is a delay in the GPS update time, normally. So, test this phenomenon on some other waypoints, like harbor entrances. If my theory that the waypoint is inaccurate is correct, then it will show up by trying the same test on other waypoints.

  • John Barry
    John Barry May 11, 2010

    do you have a WAAS GPS sensor?

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  • Contributor
  • 65 Answers

Try adjusting the GPS position offset in the GPS Sensor Settings Menu.

Posted on Nov 18, 2013

4 Suggested Answers

Maanita
  • 1142 Answers

SOURCE: Ais and 1920c Furuno chart plotter

n the system setup, under “UNITS” I set BEARING to “MAG” (magnetic). This will cause the unit to display course / bearing information in relation to the Magnetic North and match magnetic compass readings. It is not the same as True North! One has to be careful with this setting. There are a number of areas where the earth's magnetic field is locally disturbed, sometimes very significantly. Your GPS may not account for it. - again, under “UNITS” I set “METRIC”.

Posted on Sep 02, 2008

TechnoMarine
  • 132 Answers

SOURCE: WAAS

sounds like the problem is with the pilot. You may be expecting too much from nav mode you should check the antenna connector on the WAAS issue
on VX2, are you marking a good bottom on the sonar screen, but have no digital overlaid? never seen it, must be a BB thing

Posted on Jan 15, 2010

  • 111 Answers

SOURCE: I want to do a

Press and hold the alarm key whilst powering up. Also try it with the clear key while powering up again.

Posted on Jan 07, 2011

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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WAAS


sounds like the problem is with the pilot. You may be expecting too much from nav mode you should check the antenna connector on the WAAS issue
on VX2, are you marking a good bottom on the sonar screen, but have no digital overlaid? never seen it, must be a BB thing

May 04, 2008 | Furuno GP32 GPS Receiver

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Raymarine RL70CRC GPSRadar


Hi Matt,

There is a feature in these chartplotters called "Plotter Mode" that is often misunderstood and causes the exact problem you describe.

Press menu.....chart setup.....and scroll to the bottom until you see Plotter Mode in the list of options. It should be set in the OFF position.

If you have more than one display networked onboard check the setting in each one invividually.

What Plotter Mode does is allows the chartplotter system to access range scales not supported on the chart. It is not normally used for map-based navigation but more so for chartless electronic plotting (it can display routes, waypoints and track-recorder breadcrumbs.) open-ocean cruising, or for ultra-precise GPS operations (like a precision anchor drop, finding a very specific location etc. When plotter mode is on you can zoom in to a very, very small working area. The indicator it is enable is the cross-hatch background on the screen, the lack of map information, and the NO CHART DATA watermark on the screen.

Jul 30, 2007 | Raymarine RL70CRC GPS Receiver

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