Measurement Function Precautions - Casio G-Shock GSW-H1000 User Manual

Measurement Function Precautions

Your watch is able to measure and display location information, barometric
pressure, altitude, bearing, your heart rate, and other data. Note that this
watch is not a special purpose measuring instrument. Readings produced by
measurement functions are intended as general reference information only.
Using GPS
Your watch can use radio signals from Global Positioning System (GPS)
satellites to determine your current location anywhere on the globe. This GPS
function can be used to receive radio waves from GPS satellites and calculate
your current location and the current time. The process for determining your
current location is called "positioning".
Appropriate and Inappropriate Signal Reception Location
A good location for signal reception is outdoors where the sky is visible and
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not blocked by buildings, trees, or other objects.
You may experience GPS signal reception problems in the areas described
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below.
Where the view of the sky above is narrow
ー
Near trees or buildings
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Near a train station, airport, or other congested area, or where there is a
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large amount of vehicular traffic
Near railway aerial wires, high-voltage lines, TV towers, etc.
ー
GPS signal reception is not possible in the areas described below.
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Where the sky is not visible
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Underground, in a tunnel, underwater
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Indoors (Reception may be possible near a window.)
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Near wireless communication equipment or other devices that generate
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electromagnetism.
GPS satellites are in constant motion, so your location, the time of day, or
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other factors may cause a delay in the positioning operation or may even
make positioning impossible.
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