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Old 24-11-2016, 06:41   #1
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Help with chart plotter

Hello all

I have an issue with my chart plotter.
The symbol for my boat is pointing to the right of direction of travel by about 120 degrees. When I try and have it navigate to a waypoint it wont head in the direction of the waypoint it tries to go off by that 120. Anyone have this issue and what did you do??

Dave
S/V Argonauta
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Old 24-11-2016, 07:04   #2
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Re: Help with chart plotter

Quote:
Originally Posted by Dave-C View Post
Hello all

I have an issue with my chart plotter.
The symbol for my boat is pointing to the right of direction of travel by about 120 degrees. When I try and have it navigate to a waypoint it wont head in the direction of the waypoint it tries to go off by that 120. Anyone have this issue and what did you do??

Dave
S/V Argonauta
What brand of chart plotter do you have?

The chart plotter itself doesn't provide heading data. That comes from a heading sensor somewhere else on the boat. Depending on the brand and type of sensor (such as flux-gate type) you can "calibrate" the heading sensor. It usually involves a menu selection on the chart plotter or autopilot and then you drive the boat in a circle until the calibration process is complete. The chart plotter or the auto pilot controller will let you know when it is done. So check the manual for your heading sensor and find out how to calibrate it.
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Old 24-11-2016, 07:21   #3
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Re: Help with chart plotter

Thanks for the reply


It's a new (4 years old) Raymarine C series.
The manual I have is about worthless (no it is worthless) it does not give instructions on how to calibrate it.
We're at anchor off of Belize and my internet is spotty, would someone be so kind as to send info in how to calibrate it.

Thank you
Dave
S/V Argonauta
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Old 24-11-2016, 08:55   #4
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Re: Help with chart plotter

Hey Dave,

Loved Belize!

According to an internet search, the issue is with the electronic compass that is connected to the chartplotter... and that could be a variety of models. Do you have a manual for the electronic compass? Following the calibration steps in there should take care of it. If you don't, let us know what model you have and we'll try to do an internet search for you.

Happy Thanksgiving.

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Old 24-11-2016, 18:17   #5
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Re: Help with chart plotter

I have a Garmin. I don't believe there is any user calibration or compass.


My suggestion is to contact the manufacturer of the plotter and ask for help.
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Old 24-11-2016, 18:41   #6
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Re: Help with chart plotter

Quote:
Originally Posted by Dave-C View Post
Thanks for the reply


It's a new (4 years old) Raymarine C series.
The manual I have is about worthless (no it is worthless) it does not give instructions on how to calibrate it.
We're at anchor off of Belize and my internet is spotty, would someone be so kind as to send info in how to calibrate it.

Thank you
Dave
S/V Argonauta
Probably you have an Autopilot. The autopilot control head can be used to calibrate Raymarine compass. This procedure might work depending on which control head you have for the pilot. If it doesn't help you tell us what model of autopilot control head you have (may be ST6000 or something else).

Code:
Automatic compass deviation correction
1. With the pilot in Standby mode, enter Seatrial Calibration as
follows (see the following illustration): • press and hold the standby key for two seconds to enter
Calibration mode
• when you see the DISPLAY CAL screen, press the disp key until
you see the SEATRIAL CAL screen
• press the auto key to enter Seatrial Calibration
Note: If you cannot access SeaTrial Calibration, you need to turn off
the calibration lock in Dealer Setup (see page 88).
2. You should see the SWING COMPASS screen when you first enter
Seatrial Calibration. (If not, use the disp key to page through the
Seatrial Calibration items until you see SWING COMPASS)
3. When you are ready to start, press the +1 key to select
SWING COMPASS On. You will then see the TURN BOAT screen.

4. Start turning the boat in slow circles (with the boat’s speed below 2 knots). You will need to complete at least two circles, taking at least 2 minutes to complete each 360°
:
• the display will show a TOO FAST message if you turn the boat
too quickly for the course computer to correct the compass
–
if you see this message apply less helm to turn in a larger circle
Note: If necessary, you can quit the correction process by pressing
the standby or disp. If you then want to repeat the deviation
correction, return to the SWING COMPASS screen.
5. Continue slowly turning the boat until the control unit beeps and
displays the DEVIATION screen to indicate that the autopilot has
completed the deviation correction.
This screen shows the maximum deviation encountered over
360° (not as an east/west value).
Note: If the deviation figure exceeds 15° or the display shows no
deviation value, the compass is being affected by ferrous objects on
your boat. You should move the compass to a better location. Higher
deviation figures are acceptable on steel boats.

If necessary then do this part:

Aligning the compass heading
1. Once the deviation is displayed, press the disp key to move onto
the Heading Alignment screen (ALIGN HDG).
2. Manually steer the boat on a steady course at a speed which
enables you to hold that course.
3. If you have a GPS connected to your autopilot:
• increase the boat speed to more than 3 knots
• press the auto key: the autopilot will then set the heading to agree with the COG (course over ground) heading received from the GPS
• because many factors can cause a difference between heading and COG (such as tides and leeway affecting the boat) you must then fine-tune the heading alignment so it matches the boat’s steering compass or a known transit bearing
4. Use -1
, +1, -10 and +10 to adjust the displayed heading until it
matches boat’s steering compass or a known transit bearing.
5. Press and hold standby for 2 seconds to exit Seatrial Calibration
and save the new compass settings.
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Old 25-11-2016, 01:33   #7
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Re: Help with chart plotter

you need the autopilot manual. calibrate the auto pilot compass.
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Old 25-11-2016, 01:49   #8
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Re: Help with chart plotter

Hi Dave,
Just something to check before you try anything, have you checked the vicinity of your flux gate compass. I had a similar problem and found that we had put a vacuum cleaner to close to the compass and the magnet/metal in the motor has caused the compass to read incorrectly. Moved the vacuum cleaner and the problem was solved.
Now we keep the fluxgate compass in an area where it will not be interferred with accidentally. Co-incidentally our chartplotter was a Raymarine C series.


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Old 25-11-2016, 09:24   #9
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Re: Help with chart plotter

Ditto Greg, our Ray instructions had strict admonishments to keep metal away from the fluxgate...
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Old 25-11-2016, 11:29   #10
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Re: Help with chart plotter

metal... like a pair of scissors. I say that from personal experience after my Raymarine C-w and autopilot started acting up. There was even a sticker right next to the fluxgate warning about metal. It happened off shore, so imagine a frantic period of checking connections, systems reboots etc, before I discovered the cause.
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Old 25-11-2016, 11:38   #11
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Re: Help with chart plotter

Quote:
Originally Posted by Dave-C View Post
Thanks for the reply


It's a new (4 years old) Raymarine C series.
The manual I have is about worthless (no it is worthless) it does not give instructions on how to calibrate it.
We're at anchor off of Belize and my internet is spotty, would someone be so kind as to send info in how to calibrate it.

Thank you
Dave
S/V Argonauta
Before you do anything, update the software of your components.

Raymarine Certified Installer and Service Provider.
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Old 25-11-2016, 12:38   #12
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Re: Help with chart plotter

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Originally Posted by ramblinrod View Post
Before you do anything, update the software of your components.

Raymarine Certified Installer and Service Provider.
He is in a location with poor internet service. To update software of a C series plotter requires special card probably not available and many megabytes of download. Even then it would do nothing to help this problem.

It's almost certain this problem has nothing to do with the chart plotter. It is either the flux gate compass compensation done by the autopilot computer or something magnetic is too close to the compass itself.

Let's try to help him fix the problem and not create new ones.
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Old 25-11-2016, 12:57   #13
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Re: Help with chart plotter

Quote:
Originally Posted by transmitterdan View Post
He is in a location with poor internet service. To update software of a C series plotter requires special card probably not available and many megabytes of download. Even then it would do nothing to help this problem.

It's almost certain this problem has nothing to do with the chart plotter. It is either the flux gate compass compensation done by the autopilot computer or something magnetic is too close to the compass itself.

Let's try to help him fix the problem and not create new ones.
With all due respect, a 4 year old C-series takes a micro SD card.

Nothing special about it.

Next time you have internet available, download the most recent software for your products to a microSD on your laptop. Save your waypoints and user data to another microSD. Upload the new software to your MFD.

This will assure that any known bug, that has been addressed by a software uprade, is fixed. Nothing more to do, but re-install your waypoints.

If you contact Raymarine for support, the first thing they will do is advise to upgrade your software.

One question I normally ask first is, "What has changed since the last time the unit functioned properly?"

If it worked correctly previously, and suddenly stopped, and you have recently moved a ferrous object near the fluxgate compass of your autohelm, by all means fix that.

If that fixes it great, if not plan B.

But in any event, update your software to the most recent rev.

It is not hard, nor dangerous to your system in any way.

Older MFDs with separate boot codes could be a little tricky, but any of the current production series A,C,E, eS, eG etc., that use Lighthouse 17 software are easy to update and should be. No question about it.
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Old 25-11-2016, 13:07   #14
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Re: Help with chart plotter

Quote:
Originally Posted by Dave-C View Post
Hello all

I have an issue with my chart plotter.
The symbol for my boat is pointing to the right of direction of travel by about 120 degrees. When I try and have it navigate to a waypoint it wont head in the direction of the waypoint it tries to go off by that 120. Anyone have this issue and what did you do??

Dave
S/V Argonauta
One other thing. The Raymarine autohelm will not head to just a waypoint put in the chartplotter.

You must prepare a track (some refer to as a route) of at least 2 waypoints, and then set the autohelm to follow that track. It will then adjust course (to get on that track (not toward the destination waypoint, which could be the 120 degree angle you are experiencing), and then once on the track will make course adjustments to stay on that track to the next waypoint, until you get near the next (or last) waypoint in the track, at which point you will be alerted.

PS, the reason there is no calibration instructions in the MFD manual is because there is nothing in the MFD to calibrate. Only autopilots, wind, and speed instruments require user calibration. Check those manuals and it is spelled out fairly clearly how they are calibrated.

Original production MFDs had a significant response to cross track error (XTE) when following a track which alarmed many people. The Lighthouse software has been updated to change response to XTE and provide some user selectable parameters. Update the software.
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Old 26-11-2016, 06:26   #15
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Re: Help with chart plotter

Rod,

Raymarine chart plotters have had the "Goto Waypoint" feature for at least 15 years and maybe longer than that. The C series has this function. No route is required to head to a Waypoint.
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