Re: [PSUBS-MAILIST] Tired of Going in Circles

["Cliff Redus" <dr_redus@devtex.net>]

I am assuming it would have some effect.  This calibration can be repeated 
when the boat is in the water off the trailer. All you have to have is a 
laptop attached to the magnetometer and some help to rotate the boat in the 
water.

Cliff
----- Original Message ----- 
From: "Ray Keefer" <Ray.Keefer@Sun.COM>
To: <personal_submersibles@psubs.org>
Sent: Thursday, October 21, 2004 3:45 PM
Subject: Re: [PSUBS-MAILIST] Tired of Going in Circles


> Hi Cliff,
>
> I just had a horrible thought. If you rotate your sub while on its
> trailer. Will the steel in the trailer have any effect on the readings
> when off the trailer? Hopefully with the "compass" mounted high enough
> the trailer will have no influence.
>
> Regards,
> Ray
>
> Cliff Redus wrote:
> > As any  magnetometer will be effected by the steel in the hull, I
> > am planning on mounting my unit external to the hull behind the
> > pilot viewport in an non ferrous, water tight pod.
> >
> > signal.  The documentation for the unit has both  "hard iron" and  "soft
> > iron" calibration procedures for nulling out the effect of the hull.
> > This is done while boat, with sensor attached, is rotated slowly 360
> > degrees.
> >
> > Cliff
>
>
>
>
> ************************************************************************
> ************************************************************************
> ************************************************************************
> The personal submersibles mailing list complies with the US Federal
> CAN-SPAM Act of 2003.  Your email address appears in our database
> because either you, or someone you know, requested you receive messages
> from our organization.
>
> If you want to be removed from this mailing list simply click on the
> link below or send a blank email message to:
> removeme-personal_submersibles@psubs.org
>
> Removal of your email address from this mailing list occurs by an
> automated process and should be complete within five minutes of receipt
> of your request.
>
> mailto:removeme-personal_submersibles@psubs.org
>
> PSUBS.ORG
> PO Box 311
> Weare, NH  03281
> 603-529-1100
> ************************************************************************
> ************************************************************************
> ************************************************************************




************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of receipt
of your request.

mailto:removeme-personal_submersibles@psubs.org

PSUBS.ORG
PO Box 311
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************