receiver, thus enabling a quick calculation of the position. AssistNow sends the data directly to
the GPS 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-402U.
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-402U. 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).
6. Possible sources of error and their elimination
6.1 The green LED doesn’t light up after the first connection to the USB port. Make
sure that the PC or notebook is turned on, and test the USB port, possibly with
another USB device. If this other USB device works fine, please contact the
support center. If this other USB device works fine, please contact the support
center.
6.2 The green LED continues to light even after a long waiting time, but you still don’t
get a Satfix. The NL-402U needs up to 20 minutes for its first Satfix on another
continent. To get a Satfix the view to the sky must be unobstructed. Move the NL-
402U as far as possible from the wall. A house wall reflects the signal strongly
and contributes to the Satfix time delay.
