The software allows you to pull data off of the device and import them into the Qstarz GPS Travel Recorder PC utility. (The Qstarz site has an update to version 5 that fixed some of the bugs I was seeing, but not all of them.) The Qstarz GPS Travel Recorder PC utility v.4 was on the small CD the GPS comes with. It should be noted, however, that the more often a fix is taken the faster the battery will drain.
If this frequency aren’t often enough, then you can use the general setting and configure the GPS to take fixes as often as you want or as seldom. Hiking or walking mode will record your position every 10 seconds or every 1 meter. Bicycle mode takes a fix every 5 seconds, every 5 meters or every time you move. Car mode takes a fix every 3 seconds, every 10 meters or every time you go over 5 km/h. It can be configured to record your position as often as 1 fix per second, and you can also adjust that setting easily with three preset modes. The included configuration software is Windows only, but it also comes with programs for Windows Mobile or Symbian Devices. The difference between when you have AGPS data and when you don’t is striking with initial fixes at power on taking as little as 5 seconds with the data to as much as a minute and a half without. This data lasts for about 5 days after which the device will expire it and default to hunting the sky for the satellites. Knowing this data, the GPS receiver can look for the satellites in expected positions in the sky and get a much faster fix. Ephemeris data is simply the orbital tracks that each satellite in the GPS constellation moves over the earth. I assume that this is just ephemeris data. The BT-Q1000X gets fast position acquisition times thanks to the AGPS(Assisted GPS) feature which goes out to the internet to get data from Qstarz server.
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