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Point1-AP issues

Old 05-31-2016, 07:10 AM
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Default Point1-AP issues

I'm constantly having to adjust the heading sensor offset to make the boat track straight on my Evo2. I'll get it perfect and then when I make a significant turn it will be off again. Usually varys ~10 degrees.

What is causing this? I do a lot of traveling through rivers so it's pretty constant turning.
Old 05-31-2016, 07:16 AM
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It's not properly calibrated, and probably also to close to some magnetic disturbance.
Old 05-31-2016, 07:31 AM
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Originally Posted by abbor View Post
It's not properly calibrated, and probably also to close to some magnetic disturbance.
Do you mean disturbance on the boat or in the area?
Old 05-31-2016, 08:01 AM
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On the boat I assume
Old 05-31-2016, 09:29 AM
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Originally Posted by abbor View Post
On the boat I assume
If that was the case wouldn't it be off the same all of the time? It's recommended distance away from all things listed in install instructions. When I calibrated I got down to 5% on local field.
Old 06-01-2016, 12:49 AM
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You need to move it. I've seen the same a few times with an rc42
Old 06-01-2016, 04:06 AM
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Originally Posted by smac999 View Post
You need to move it. I've seen the same a few times with an rc42
Damnit. That sucks if so.
Old 06-01-2016, 04:36 AM
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When you say constantly changing the offset do you mean physically rotating the compass or using the electronic offset?
In theory the heading from the Point1 should match, within a few degrees, the COG.
The COG accuracy is based on speed, speed negates drift.
The only thing left is deviation from calibration errors and magnetic variation of your location.
I take it you know heading from compass and course of your boat will in most cases be different if your Evo 2 is set to NAV. Usually an AP will steer to change the heading to maintain course.I say this because of your apparent random nature of the perceived problem.
I would also suggest as did abbor to align the compass orientation as best as possible, do a re calibration and fine tune the orientation using COG or a known navigation marker.
Old 06-01-2016, 05:42 AM
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Originally Posted by isitstuffed View Post
When you say constantly changing the offset do you mean physically rotating the compass or using the electronic offset?
In theory the heading from the Point1 should match, within a few degrees, the COG.
The COG accuracy is based on speed, speed negates drift.
The only thing left is deviation from calibration errors and magnetic variation of your location.
I take it you know heading from compass and course of your boat will in most cases be different if your Evo 2 is set to NAV. Usually an AP will steer to change the heading to maintain course.I say this because of your apparent random nature of the perceived problem.
I would also suggest as did abbor to align the compass orientation as best as possible, do a re calibration and fine tune the orientation using COG or a known navigation marker.
I will try that. Thank you.

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