caty,
thanks for the feedback, I did a test with two gps, one of whom is a model and another converted 3760T 3460LT is a unique, is the fact that there is a delay siginificativo when we turn on the two models, the model was turned on first, the atmospheric conditions were ideally, the GPS was hoped that with the satellite reception full apresaentava error of 18 meters, now I called the 3460LT and after a few seconds, even without being filled with the reception, only two bars, showed error of 8 meters, when the reception status bar was filled showed error between 3 and 5 meters, now converted 37xx model was still improving reception error at this point showed 12 meters after another minute, the accuracy was for between 5 and 6 meters, as I said, already has a good accuracy, conclusion: the fact is that there is this delay in converting the position accuracy, more an observation, made ​​converting a model 3790T and showed the same characteristics of delay in the position measurement.