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Need your help one more time!!!
May 30, 2011
6:17 pm
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phild31
Nashua, New Hampshire USA
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ShortcutHicksy wrote:

Hello David,

Has there been any update from Magellan on the calibration issue?

Do they think it may be a hardware problem.

I'm trying to increase my understanding of e-compasses.

Graham.

I don't think it's a hardware problem, my 710 worked perfectly for months until I installed the update.

Phil

When in trouble or in doubt, run in circles, scream and shout
May 30, 2011
5:08 pm
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Caotix
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I heard rumors that there is a beta 5.XX in the pipeline. :woohoo:
Hope that it will cover some of the bugs and wishes. laugh

May 30, 2011
5:37 am
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ShortcutHicksy
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Hello David,

Has there been any update from Magellan on the calibration issue?

Do they think it may be a hardware problem. How often is the set/reset function activated for the Anisotropic Magneto-Resistive (AMR) sensor. Do Magellan use a Honeywell AMR sensor, if so which model.

I'm trying to increase my understanding of e-compasses.

Graham.

May 25, 2011
7:26 am
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ShortcutHicksy
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I try today to produce Phil's situation. I mark 11 caches as found and then headed for a new one (walking) about 1.5Km away with the compass calibrated and I have the change over speed from GPS to compass set at 3Kph.

I stop twice along the way and then again at the cache and each time the compass did not auto calibrate. I had to use the calibration routine each time and one time it took 15 goes to calibrate the compass. But I was able to calibrate it and did not delete the BIN file.

It shows that the units are producing different results although the calibration routine is not an exact science and I have just about mastered the technique.

Graham.

May 25, 2011
6:08 am
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David
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Thanks guys,

I just want to let you know that these issues are on the top of Magellan's priority list and Eric, the Product Manager for the Outdoor line is not only receiving my Emails, but he's reading your post on this forum personally and they're doing everything they can to find the cause of these issues so they can get another firmware release out to us to fix this. So again, that you for your input, because it is playing a major part in getting these issues resolved.

David

May 25, 2011
5:04 am
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rufrak
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As Graham says the problem was there BEFORE the update - I am a recent purchaser of a 610 Canada, ver. 3.24, and I haven't updated the firmware and one of my first questions was about the compass not staying calibrated! At the time Graham suggested it might be a low battery issue and I thought that was the case but I believe it has gone out of calibration even when on USB/computer power.

May 25, 2011
4:25 am
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denisetdoris
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dwcarr1 wrote:

When the compass is showing red or yellow (Not Cal'd) does it still seam to be accurate or can you tell that the compass is reading off?

If mine is Red, it's inaccurate, won't move or turn at all, unless I'm over the speed threshold. No issue going over/under speed threshold either. Yellow or white, it's ok. It does spin the map at times even when calibrated when in the vehicle mount (batt/usb power, no difference), which is more than annoying, but other than that no major issues.

Frankly I haven't done much caching to test Phil's theory, but I've only ever had to delete the .bin file once, due to the GC list error (which I haven't been able to reproduce).

Denis Gionet, OGA Executive Member - Northern Ontario.
May 25, 2011
3:47 am
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phild31
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On my unit I never had to calibrate the compass until I installed the update. It would calibrate itself when I moved a little or waved it in the air.

Now after a bunch of found logs it will not calibrate at all. Not difficult to calibrate, impossible to calibrate.
As an experiment I spent half an hour on the calibrate page repeatedly trying to calibrate it and it never did!

When I deleted the .BIN file it calibrated itself in a few seconds.

With my unit at least the problems with the compass started with the update.

When in trouble or in doubt, run in circles, scream and shout
May 25, 2011
3:31 am
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ShortcutHicksy
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Hi David,

My observations.

1. GPS mode to compass mode - compass often requires calibration.

2. Cancel Route - compass often requires calibration.

3. Compass Icon Yellow - compass may or may not be calibrated.

4. Compass Icon Changing Red To Yellow - compass not calibrated, jumping/spinning 90 or more degrees.

5. When the compass is not calibrated and looking at the compass screen, it is jumping/spinning 90 or more degrees. Like as if two different part of the software are trying to control the compass display at the same time.

6. I have NEVER deleted the BIN file to fix this issue. I have ALWAYS just re-calibrated the compass using the calibration routine. It can be difficult and take a number of attempts.

David I should point out that I reported the calibration problem before I installed the latest firmware. I know others don't agree but I believe the new firmware may have just introduced another trigger (Cancel Route).

The underlying problems was there before and also the difficulty in calibrating the compass. You do not have to delete the BIN file to recalibrate the compass, it just requires a number of attempts.

As I said before it is as if two parts of the software have determined North to be in totally different directions and they are fighting for control.

Hope this helps,
Graham.

May 25, 2011
1:58 am
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warfieldm
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I haven't really paid attention to the stability of the compass in comparison with the number of caches marked found. In the one cache I attempted today, I had to recalibrate twice in 20 minutes. (Edit: This was with a freshly generated bin file.) One thing that always causes it to become uncalibrated is when I exceed the 4mph threshold to switch to GPS compass mode. Coming out of that always result in it requiring a recalibration. This past weekend, I had it calibrated and working fine. While walking on a fairly steep hillside, I slipped and slid about 40 feet. When I stood up, it wasn't calibrated anymore. I suspect I was sliding at a rate greater than 4mph. :silly:

The only time the compass direction is consistently accurate while red is when in GPS mode. Typically, it will show calibrated and spin only to show that it needs to be calibrated when it hits a quadrant of the compass. Yep, I've had it flash between calibrated and uncalibrated repeatedly without moving.

May 25, 2011
12:19 am
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phild31
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With mine if it shows yellow or green it works fine and is accurate.
When it's red it doesn't work at all.

When in trouble or in doubt, run in circles, scream and shout
May 25, 2011
12:04 am
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David
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So I believe Phil has answered this question - but I'll put it out there anyway.

When the compass is showing red or yellow (Not Cal'd) does it still seam to be accurate or can you tell that the compass is reading off?

Thanks,
David

May 24, 2011
11:58 pm
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phild31
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As I add found logs the compass will progressively get more unstable, first just needing to re-calibrate once or twice, then with 6-7 found logs not staying calibrated for more than a few minutes, then with 9-10 found logs not calibrating at all.
So I turn the electronic compass off.

Deleting the .BIN file always fixed the compass for me.

If I don't make a found log it works fine but I have to cancel a route by going to a new route, if I cancel a route any other way the unit does not track position at all. It shows excellent satellite signal but my position never changes!
So I either stay on a route at all times or go to a computer to delete the .BIN files.

I've installed the update three times and got three different types of problems. This set of problems I can live with for a little while longer but I'm starting to get frustrated with the whole thing!

When in trouble or in doubt, run in circles, scream and shout
May 24, 2011
11:17 pm
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David
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You guys are awesome, but I need your help one more time.

I just got off the phone with Magellan and they've been working to resolve ALL of the issues that you have reported, however, they need some assistance with one last remaining item so that they can get another firmware update out to us.

For all of you that have had issues with the compass not staying calibrated I need some input.

Q - Did deleting the .bin correct this issue? If not, what things have you seen that effect the compass calibration? Any info pertaining to this issue will be greatly appreciated.

Thanks,
David

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