Thread: About 37xx converted to 34xx satellites reception accuracy

Originally Posted by Neil

Thanks Angelo. I would have done the tests using off-road mode to disable 'lock on road' in suburban twisting circuits, but would have neglected to use 'Pedestrian'. I can easily do the test today in the outer 'burbs with plenty of trees, but if you require big city buildings that test will have to wait a few days.

I'll also enable the trip log in map layers so it's visible during the test, but doubt i'll have much opportunity to compare the 4 trails in real time as i'll be alone in the car and will need my attention elsewhere mostly.

In regard to the log data, do you want bin as well as gpx files? I would have logged only gpx, but if you also want bin file let me know what Binary Log types you want enabled. This stuff is over my head, i know how to view the gpx coordinates etc in G7toWin but that's about if for me. I'll need some precise guidance from you blokes if you want any fancy data to play with later.

In the absence of anyone replying with further directions, i'll start a half-hour test after about 4 hours from the time of this post [it's about 21:50GMT 04 May now].

Neil, thank you for your feedback, in fact I just gave some suggestions for the records, but particularly I am absolutely convinced the accuracy on the screen has direct relation with the record tracklogs. I've done several comparative tests with different gps tracklog of Etrex 30, Oregon 450 and 3790 not modified, and especially observations of in real time when there was an abnormality, such as when the vehicle jump to another street, for example. In this case when the accuracy was poor, evidenced a direct relation between them. I did the tests in various situations and on different days. I do not published because I thought it was surpassed a question and subject only to an interested of a person.. Anyway your work may be elucidator and all, once again, we have to thank for his good pleasure.

Is important to note that in general there are not major differences in tracklogs, but appears some aberrations and inaccuracies not pleasant when driving, like delay in detecting conversions, among other problems, especially in places of poor satellite acquisition. Obviously the tracklog show these anomalies with lines that do not obey the real path that we do and the map design (not always accurate).

Finally I ask where you found the option for enable/disable the off road mode in 3490 sw? Similar option I just found in Navigation/Calculation Mode, but from what I understand these options (Faster Time, Shorter Distance, Less Fuel, Off Road) are valid only for calculation of routes. In normal use the default mode remains lock on road. In my view, any other use that want to do from real off road mode has to be in Pedestrian mode. If I am wrong, please correct me ..