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Lunker
Occasional Visitor
Joined: Jan 12, 2006
Posts: 36
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 Posted: Fri Jan 20, 2006 12:50 am Post subject: Auto Night Mode |
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I've got my Garmin i3 set to Auto in the night mode setting and I can't belive how acurate it is. 8O
How is it done and will it change with the different times of sun set and sun rise? |
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PaulB2005
Pocket GPS Moderator
Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK
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| Posted: Fri Jan 20, 2006 9:58 am Post subject: |
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| Sun Rise and Sun Set can be calculated if your position in the world is known. As the GPS system knows exactly where you are and what time it is, it can calculate when to switch mode. It will do it as the days lengthen and shorten with the same accuracy. |
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Ash10
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Joined: Feb 19, 2005
Posts: 478
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alan_t
Regular Visitor
Joined: Jan 17, 2006
Posts: 84
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| Posted: Fri Jan 20, 2006 7:11 pm Post subject: |
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i've had the unit indoors connected to my usb port on my computer.
it auto switches to night mode on the evenings with out getting a gps signal.
maybe theres also a certain time it autoswitches. |
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Skippy
Pocket GPS Verifier
Joined: 24/06/2003 00:22:12
Posts: 2946
Location: Escaped to the Antipodies! 36.83°S 174.75°E
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| Posted: Fri Jan 20, 2006 11:01 pm Post subject: |
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| alan_t wrote: | | it auto switches to night mode on the evenings with out getting a gps signal.maybe theres also a certain time it autoswitches. |
Yes there is and it is based on your location. Some Garmin units will show the sunrise/set times in one of the data fields and you can see this changing if you are flying north or south in a plane. :D
If the GPS doesn't have a signal then it changes based on it's last known position. You can also switch the unit into indoors mode and change your position on some units and the sun rise/set times changes then too.
_________________
Gone fishing! |
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Lunker
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Joined: Jan 12, 2006
Posts: 36
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| Posted: Sat Jan 21, 2006 3:21 pm Post subject: |
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| Cool thanks guys :D |
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