Sony Cyber-shot DSC-TX10 User Manual page 292

Cyber-shot User Guide
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Precautions / About this camera
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Top page > Precautions / About this camera > About this camera > GPS (DSC-TX100V only)
GPS (DSC-TX100V only)
This system allows you to pinpoint your exact location on the earth. GPS satellites are located in
6 orbits, 20,000 km above the earth. The GPS system consists of 24 or more GPS satellites. A
GPS receiver receives radio signals from the satellites, and calculates the current location of the
receiver based on the orbital information and travel time of the signals, etc.
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 the camera.
"GPS" is a system for determining geographic location by triangulating radio signals from GPS
satellites.
Avoid using the camera in places where radio signals are blocked or reflected, such as a
shadowy place surrounded by buildings or trees, etc. Use the camera 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 the camera as follows:
In tunnels, indoors or under the shade of buildings.
Between tall buildings or in 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 the camera: near
1.5 GHz band mobile telephones, etc.
On triangulating errors
If you move to another location right after turning on the camera, it may take a longer time for
the camera to start trianguating, compared to when you stay in the same place.
Error caused by the position of GPS satellites
The camera automatically triangulates your current location when the camera 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 map based 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
The camera acquires location information regularly 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 GPS usage restrictions on an airplane
During take off and landing of an airplane, turn off the camera, as you will be instructed to do
by the onboard announcement.
If you do not prefer to record any information, the [GPS setting] is set to [Off].
On the other restriction
Use GPS in accordance with the regulations of the place or situation.
On the geographic coordinate system
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