Polar RC3 GPS user manual Gps?

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The training computer does not find or it takes	Something in your surroundings may be blocking
long time to find the satellite signals	GPS satellite signal reception (e.g. underpasses,
	tall buildings, terrain or forested areas). Go
	outdoors and away from tall buildings and trees. In
	good conditions, acquiring satellite signals for the
	first time typically takes 30-60 seconds. Note that
	the GPS reception does not work indoors.
The speed or distance readings are incorrect or	Something in your surroundings may be blocking
irregular	GPS satellite signal reception (e.g. underpasses,
	tall buildings, terrain or forested areas). If the
	training computer cannot locate the satellite
	signals, it will not be able to calculate its location.
	Distance is measured between the last location
	before the shadow area and the first location after
	the shadow area in a straight line.
What is the measurement accuracy of Polar RC3	Polar RC3 GPS training computer measurement
GPS?	accuracy is +/- 2% for distance and +/- 2km/h for
	speed. When moving at low speeds (below 3km/h)
	accuracy of this level can sometimes cause
	relatively big errors. However, with higher speeds
	the measurement is more accurate.
	In order to improve the accuracy of the position
	calculation, Polar RC3 GPS utilizes the Wide Area
	Augmentation System (WAAS). WAAS is an
	extremely accurate navigation system in North
	America. It is widely used e.g. in aviation to
	enable precision approaches for airplanes. WAAS
	Wide-area Reference Stations, which are located
	on the earth, monitor and collect information on
	the GPS signals and send correction messages to
	the two Wide-area Master Stations. These two
	master stations then send the message forward to
	geostationary satellites, which in turn send the
	correction signals to WAAS-enabled GPS receivers,
	like Polar RC3 GPS.
Low battery is displayed	This notification is displayed when the training
	computer has enough charge for one hour of
	training with the GPS function on. It is
	recommended to charge the training computer
	before starting a new training session. For more
	information, see Training Computer Battery
	(page 9).
Low battery, GPS switched off is displayed	The training computer charge is too low for
	continuing the recording of the training session
	with the GPS function on. The training computer
	sounds and backlight are automatically
	deactivated and the training computer switches
	the GPS function off. You can still use Available
	Accessories (page 6) and carry out the training
	session. A new training recording cannot be
	started before charging the training computer. For
	more information, see Training Computer Battery
	(page 9).

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