About gps (hdr-xr200v), On triangulating errors, On the restriction of use of gps on an airplane – Sony HDR-XR200V User Manual

Page 123

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Techniques

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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 the camcorder: near

1.5 GHz band mobile telephones, etc.

On triangulating errors

If you move to another location right after

setting the GPS switch to ON, it may take

a longer time for the camcorder to start

trianguating, compared to when you stay in the

same place.

Error caused by the position of GPS satellites

The camcorder automatically triangulates your

current location when the camcorder receives

radio signals from 3 or more GPS satellites. The

triangulating error allowed by the GPS satellites

is about 30 m (98 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 Unites

States Department of Defense, and the degree of

accuracy may be changed intentionally.

Error during the triangulating process

The camcorder acquires location information

every 10 seconds 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 on an

airplane

During take off and landing of an airplane,

set the GPS switch to OFF and turn off the

camcorder, as you will be instructed to do by

the on-board announcement. In other cases, use

GPS in accordance with the regulations of the

place or situation.

*

1

1080i specification

A high definition specification which utilizes

1,080 effective scanning lines and the interlace

system.

*

2

720p specification

A high definition specification which utilizes

720 effective scanning lines and the progressive

system.

*

3

Data recorded in AVCHD format other than

the above mentioned cannot be played on your

camcorder.

About GPS (HDR-XR200V)

The GPS (Global Positioning System) is a

system that calculates geographical location

from highly accurate US space satellites. This

system allows you to pinpoint your exact

location on the earth. The 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 (almanac data) 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 camcorder.

“GPS” is a system for determining geographic

location by triangulating radio signals from

GPS satellites. Avoid using the camcorder

in places where radio signals are blocked or

reflected, such as a shadowy place surrounded

by buildings or trees, etc. Use the camcorder 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 camcorder as follows.

In tunnels, indoors or under the shade of

buildings.

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