| Author |
Re: Compass and altitude sensor? 60cx versus 60csx.
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| mynetsig@yahoo.com 2006-01-31, 5:49 pm |
| Thanks Ron. Follow up question:
Once the compass is calibrated, why and when does it need to be
calibrated again? How often? What's involved in the calibration
process?
Sam
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| Ron Schmars 2006-02-21, 5:49 pm |
| It must be recalibrated everytime you change the batteries but I
recalibrate it before almost every cache. You just select calibrate
on the menu and then make two revolutions with your body.
I think the metal content of the soil and surrounding area make a
little difference and thats why I recalibrate more often.
GeoRon
On 31 Jan 2006 13:02:23 -0800, "mynetsig@yahoo.com"
<mynetsig@yahoo.com> wrote:
>Thanks Ron. Follow up question:
>
>Once the compass is calibrated, why and when does it need to be
>calibrated again? How often? What's involved in the calibration
>process?
>
>Sam
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| Heinrich Pfeifer 2006-02-21, 5:49 pm |
|
"Ron Schmars" <ronnospam@schmars.com> wrote in
news:vafmv191o3c0rmo
4he74bihdh3jqrcvo2g@
4ax.com...
> It must be recalibrated everytime you change the batteries but I
> recalibrate it before almost every cache. You just select calibrate
> on the menu and then make two revolutions with your body.
> I think the metal content of the soil and surrounding area make a
> little difference and thats why I recalibrate more often.
it is the ferromagnetic metal content within the batteries deforming the
magnetic field of the earth. Therefore you need a new calibration after each
battery change - even if you remove the batteries and put in the same ones
again, in a slightly different orientation.
--
Heinrich
http://www.gartrip.de
mail: new<at>gartrip.de
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