Megellan GPS (Discover Aus CD on Computer)

Submitted: Saturday, May 28, 2005 at 13:51
ThreadID: 23378 Views:2856 Replies:5 FollowUps:0
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I have a Megallan Gold GPS and Discover Aus CD program on my computer at home. How do I you change the Datum to Aus 66?
i can't work it out?
Can change on actual GPS unit
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Reply By: Sand Man (SA) - Saturday, May 28, 2005 at 14:37

Saturday, May 28, 2005 at 14:37
john,

Why do you want to change to Aus 66.

I use Discover Aus on a Magellan Platinum and have the datum set for WGS84.

You need to match the datum setting on the GPS to match the Maps you are using to get the best accuracy.
Bill


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AnswerID: 113322

Reply By: Charlie - Saturday, May 28, 2005 at 15:12

Saturday, May 28, 2005 at 15:12
Change it on the GPS if your using a paper map with AUS66,up and download is automaticly converted to the us datum anyway.
Regards Charlie
AnswerID: 113325

Reply By: The Explorer - Saturday, May 28, 2005 at 17:23

Saturday, May 28, 2005 at 17:23
Hello - the readout in DiscoverAus is always WGS84 - you cant change it . Changing the datum on the GPS is achieved through the setup menu (ie press menu and then setup and there will be an option to change datums). With repsect to readout and waypoints this only changes the datum in which the data is displayed..it is still stored on GPS in WGS84.

If you are using moving map (GPS log)...depending on model of GPS, changing the display datum on gps from WGS84 may make DiscoverAus plot your position incorrectly ...as it is expecting NMEA data in WGS84 and there is no way of telling it otherwise (ie changing dispaly datum will change the datum of NMEA data).
Cheers
Greg
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AnswerID: 113357

Reply By: awill4x4 - Saturday, May 28, 2005 at 21:12

Saturday, May 28, 2005 at 21:12
I would assume that if you have downloaded some waypoints to your GPSr that you have logged from your computer DiscoverAus program and then change to Aus 66 in your GPSr that the waypoints would then change to Aus 66 coords.
Regards Andrew.
AnswerID: 113394

Reply By: john - Sunday, May 29, 2005 at 16:42

Sunday, May 29, 2005 at 16:42
I do not have the computer in the car. When I down load the computer setting doesn't change to the same as the GPS. All the maps I have are in Aus66.

Still I can't work out how to change on the computer the datum???
AnswerID: 113465

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