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[shemesh]

i got this from my DG200:

<trkseg>
  <trkpt lat="33.142590" lon="35.648483">
   <ele>140.00</ele>
   <time>2012-04-28T19:05:43Z</time>
  </trkpt>
  <trkpt lat="33.142658" lon="35.648205">
   <ele>146.00</ele>
   <time>2012-04-28T19:06:13Z</time>
  </trkpt>
  <trkpt lat="33.142773" lon="35.647919">
   <ele>174.00</ele>
   <time>2012-04-28T19:09:13Z</time>
  </trkpt>
</trkseg>

but the elevation is wrong!!
checking the elevation for the first coordinate gave me 101 meter.
the second point - 100 meter
and the third was 99 meter

check with both google earth and http://www.gpsvisualizer.com/elevation

what going on? why DG200 elevation is wrong???

[GS_TECH01]

Just a couple of questions:
During these times, is the device able to acquire a good GPS fix?
Was the green light blinking on the unit?
What is the testing environment? Do you have a clear access to an open sky?
No tall trees or buildings?

Moreover, can you please register your product and generate a support ticket?

We recommend that you visit our website: (http://www.usglobalsat.com/store/signin.aspx?ReturnURL=/store/support/). Register your product and generate a "Support Ticket" from within our system.

If you had purchased the item from the USGlobalSat website, you should already have a customer account and password. You can immediately log-in using that info. If you purchased it from one of our authorized resellers, you will need to establish a NEW account at: http://www.usglobalsat.com/store/createaccount.aspx

By working within our support structure, we do not only address your specifc issue in a timely manner, but also maintain a history of your incident to ensure that it is handled with appropriate actions. It's not only now, but for all potential future communications as well.

We again thank you for your patience and cooperation.

WARRANTY POLICY

Please read our posted warranty policy, especially on how it pertains to sellers of USGlobalSat product on e-Bay & other unauthorized resellers: http://www.usglobalsat.com/s-131-terms-conditions.aspx#12

[shemesh]

just to make sure i've made another check with this one:
  <trkpt lat="33.017883" lon="35.482552">
   <ele>842.00</ele>
   <time>2012-04-27T11:41:22Z</time>
  </trkpt>

fix was good! green light blinking... clear access... nothing above... i was in the out.
the lat/lon is precise!

BUT!!!
checking those lat/lon with other tools gave me elevation of  832 meters

[jcr83]

842 m instead of 832 m ?  Your GPS is working correctly. Accuracy of GPS is +/- 20 meters for elevation.

[GS_TECH01]

Yes, I do agree with jcr83. If the device is able to get WAAS fix, then, you should have an accuracy of 3 meters. If it's unable to, the accuracy would be up to 10 meters or more.

Let me know if you have any questions.