Sony NAV-U NV-U81T Quick Start Manual page 7

• Under a highway
• Between high buildings
• Between tall trees with dense foliage
After the initial installation, park your car
in a safe, open place (no high buildings,
etc.) for up to 20 minutes to allow for GPS
signals to be received before using the
navigation system.
Note
It takes time to receive a GPS signal when
switching the unit ON after switching OFF
the main power, after the built-in battery is
fully discharged, or after resetting the unit.
On this positioning system
The system has a function that allows the
car's current position to be correctly
displayed even at locations where the GPS
signal is temporarily interrupted or poorly
received, as when going under an
overpass. To activate this function, do the
following.
– Attach the unit to the cradle.
– Drive for a while in an area where the
GPS signal is clearly received.
The positioning system will become ready
for operation after you have driven a little
with the unit on.
Notes
• The accuracy of this function may
deteriorate if the unit is installed near a
heated or heat-reflecting windscreen. In
this case, use the optional External GPS
Antenna.
• Depending on the conditions, the car's
current position or the movement may not
be accurately displayed. This, however,
will be corrected as soon as the GPS
signal reception resumes.
• This function is available only during route
guidance.
On the software
Read the "END-USER LICENSE
AGREEMENT" carefully before use.
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