Hibernation Option

planetnine · Posted: Sat Jan 23, 2010 11:47 am Post subject:

One of the data message-types that is loaded from the satellites is the orbital elements from all the GPS satellites. This takes At least a couple of minutes to cycle through the whole list and is one reason a cold fix takes so long.

With this list stored, acquisition time can be cutdown to very little, even if most of the visible satellites have changed as it is data for the whole constellation.

I think the windows hibernate quick-start has a lot of significance here too.
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planet nine
Lincoln, UK.

Gibbo10 · Posted: Sat Jan 23, 2010 12:34 pm Post subject:

Gibbo10 · Posted: Sat Jan 23, 2010 12:37 pm Post subject:

GPSwalker · Posted: Sat Jan 23, 2010 2:15 pm Post subject:

[/quote]

I've used it by getting GPS lock at home, hiberbnating, then driving to start location of a walk. When it switches on it gets lock within seconds - so no waiting around before setting off.[/quote]

I did similar on Monday with hibernate set to two hours. Got a sat lock at home then went by train about 40 miles to Hessle and the start of the Yorkshire Wolds Way. I got off the train and switched on the unit and had my new position on the map in about five seconds. The usual delay of standing still for several minutes for boot up and a sat lock was eliminated, and I was straight off the mark like anyone with a paper map (but I could start logging my route as well). In my opinion this feature is a big improvement to the Active 10.[/quote]

And what did you do to the Hibernate settings when you set off ? Leave it of change it ?[/quote]

Nothing. By switching the unit on when I got off the train and got the lock all I needed to do was press start on my Trip Log page. Because I was logging I had no reason during my walk to turn off the unit until the end of the route. At that stage, when I did turn it off the hibernate reverted to my chosen setting of 2 hours. So if for any reason I turned it on in that time, I would have the fast sat lock. Since minimal power is used with the hibernate feature I have left my unit on a 2hr setting. Others may wish to turn hibernate to off at the end of the day to save that bit of power.

satmapian · Occasional Visitor Joined: Jan 14, 2009 Posts: 59

Thanks folks, as long as the fix comes quickly - which it seems to - then this is a very useful feature

lucevans · Posted: Sat Jan 23, 2010 5:33 pm Post subject: You've changed my mind

From reading what people here are doing, I've decided to try setting hibernate to ON (8 hours) - that should give me the best of both worlds (instant on/sat lock AND gpx track log for my travels, as long as I use the unit at least once every 8 hours - which I'm bound to do!) Smile

My ideal set-up would be for Satsync to add another option to the hibernate menu: "Hibernate on Power Button" - which would leave the unit "always on" until the user presses the power button, then instead of completely powering down, the unit enters hibernate mode. Maybe I should add this to the wishlist sticky?

RavingDave · Lifetime Member Joined: Oct 14, 2006 Posts: 111

planetnine · Posted: Sun Jan 24, 2010 4:21 am Post subject:

Be nice to get a reminder of the Hibernate status on the power-off confirmation screen, just so you know what that button press will do. Maybe a status message showing on/off and however many hours, or even a choice: this button for power-off, that button for hibernate.

Edit: heh, after looking at the wishlist thread, I think I've just posted what lucevans wanted. I think that's what his post probably meant to say. Or something.
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planet nine
Lincoln, UK.

lucevans · Posted: Sun Jan 24, 2010 12:13 pm Post subject: Re: You've changed my mind

planetnine · Posted: Sun Jan 24, 2010 5:54 pm Post subject: Re: You've changed my mind

Gibbo10 · Posted: Sun Jan 24, 2010 9:56 pm Post subject:

This morning I turned on my satmap and got a lock, then put the unit into hibernate and drove 33 miles to the start of my walk. When I arrived I turned on satmap and got an immidiate update on my position but with only 39ft accuracy and then within a few more seconds I was up to full bars! I shall be doing it this way in future.

One interesting little bug that I found however was that before setting off I did a reset all in the trip log screen and every thing went back to zero as you would expect. However when I pressed "start" on the trip log, the "total distance" box flipped to 32.7 miles which was the distance from home!!! in 0.01 seconds boy if only!! I tested it on the way back home and it did the same thing. I have reported it to satmap. It made an intersting calculation of 8,406.2 mph in the average moving box - just hope the cops weren't out with the speed guns !!!!!

It necessary to do another reset after pressing start.

RavingDave · Lifetime Member Joined: Oct 14, 2006 Posts: 111

lucevans · Posted: Mon Jan 25, 2010 10:00 am Post subject: Re: You've changed my mind

planetnine · Posted: Mon Jan 25, 2010 10:06 am Post subject:

That's a good idea Dave, but as there are six soft buttons to play with, why not have three allocated to Power-off, Hibernate and Back? It confuses people that there is no choice or even information on that screen; you don't know whether you are switching off or hibernating. Put the hibernate time select box on that screen and allow the user to decide how to power their unit down.
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planet nine
Lincoln, UK.

RavingDave · Lifetime Member Joined: Oct 14, 2006 Posts: 111

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