Sony DEV-50V - Manual (Page 79)


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Determining a location is called
“triangulating.” A GPS receiver can
determine the location’s latitude and
longitude by receiving signals from 3 or
more satellites.
As the positions of GPS satellites vary
constantly, it may take longer to determine
the location or the receiver may not be able to
determine the location at all, depending on the
location and time you use this product.
“GPS” is a system for determining geographic
location by triangulating radio signals from
GPS satellites. Avoid using this feature in places
where radio signals are blocked or reflected,
such as a shadowy place surrounded by
buildings or trees, etc. Use this feature in open
sky environments.
You may not be able to record location
information at locations or in situations where
radio signals from the GPS satellites do not
reach this product as follows.
In tunnels, indoors or under the shade of
buildings.
Between tall buildings or at narrow streets
surrounded by buildings.
In underground locations, locations
surrounded by dense trees, under an elevated
bridge, or in locations where magnetic fields
are generated, such as near high voltage
cables.
Near devices that generate radio signals of the
same frequency band as this product: near 1.5
GHz band mobile telephones, etc.
When you upload to or share on the web
images recorded with [GPS Setting] set to [On],
location information may unintentionally be
made known to others. If you want to avoid that
situation, set [GPS Setting] to [Off] (p. 62).
On triangulating errors
If you move to another location right after
turning the power switch to ON, it may
take a longer time for this product to start
triangulating, compared to when you stay in the
same place.
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Error caused by the position of GPS satellites
This product automatically triangulates your
current location when this product receives
radio signals from 3 or more GPS satellites. The
triangulating error allowed by the GPS satellites
is about 10 m (33 feet). Depending on the
environment of the location, the triangulating
error can be greater. In this case, your actual
location may not match the location on the GPS
information. Meanwhile, the GPS satellites are
controlled by the United States Department of
Defense, and the degree of accuracy may be
changed intentionally.
Error during the triangulating process
This product acquires location information
periodically during triangulating. There is
a slight time difference between when the
location information is acquired and when the
location information is recorded on an image,
therefore, the actual recording location may not
match exactly the location on the map based on
the GPS information.
On the restriction of use of GPS
Use GPS in accordance with the regulations of
the situation, the countries/regions of use.
On the geographic coordinate system
The “WGS-84” geographic coordinate system
is used.
About the memory card
A memory card formatted by a computer
(Windows OS/Mac OS) does not have
guaranteed compatibility with this product.
Data read/write speed may vary depending
on the combination of the memory card and
memory card compliant product you use.
Damaged or lost data may occur in the
following cases (the data will not be
compensated for):
If you eject the memory card, or turn off
this product while this product is reading
or writing image files on the memory card
(while the access lamp is lit or flashing)
If you use the memory card near magnets or
magnetic fields
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