7. Assist GPS configuration with u-Center 7.xx
The NL-662U supports AssistNow!
AssistNow is a standard A- GNSS service, which increases the performance of the
GNSS receiver, by calculating a position almost immediately, even under difficult
reception conditions. A- GNSS improves all GNSS capable applications, especially those
that require a continuous state of readiness, for example applications for fleet
management or GNSS capable hand-held devices, whose users would like to access
local services immediately, independently of the reception conditions.
Without A- GNSS, a GNSS receiver must localize at least 4 satellites in direct line of
vision, and then download their location data. This process takes 30 seconds under
optimal reception conditions, but under less favorable conditions it may take much longer,
e.g. in an urban environment or in a building, where the GNSS reception is weaker.
AssistNow sends the data directly to the GPS receiver, thus enabling a quick calculation
of the position. AssistNow sends the data directly to the GNSS receiver, thus enabling a
quick calculation of the position.
The offline service provides support data, which are valid up to 14 days. The user can
thus profit for longer periods from the increased satellite acquisition performance, and
they need an internet connection only occasionally, in order to update the support data.
The call-up and data transmission functions can be found in the menu bar of the u-
Center.Click on the AGPS function in the menu bar to update AssistNow and to load the
NL-662U.
A small window with a small pull-down menu appears, in which you can see the validity
of the data. Choose the desired validity period. Click on “Flash update”, and then on OK.
The UPDATE window opens and shows that the u-Center has loaded the data and is
transmitting them to the NL-602U. When this process is finished, the window turns green,
and the messages “SEND CANCEL” and “DONE” are displayed. This finishes the
process.
Further information to the u-Center can be found in the u-blox documentation under
http://www.u-blox.com/products/u_center.html . If you have any questions, please
contact u-blox directly.
Danger of explosion at contact with fire!
Do not permanently expose the receiver to temperatures of over 60°C (140°F).
