Seiko Epson Corporation AP002 User Manual

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Chapter 6
Measuring Distance and Pace with the Stride Sensor (SS-700/SS-500 Only)
6-1 About the stride sensor
 Measuring with the stride sensor
By using the built-in stride sensor, you can measure distance and pace even in 
locations that cannot receive GPS signals, such as tunnels or buildings.
Stride sensor measurements are only available for the SS-700/SS-500.
 ·  The stride sensor measures distance and pace using the latest running pitch information 
received from the GPS.  
If your running pace differs greatly from the latest running pace received from the GPS, 
there may be a large difference between the distance and pace measured with the stride 
sensor.
 ·  The device's stride sensor is used for running. This is not available for cycling, skiing, or 
canoeing. Also, when walking, a large measurement error may occur.
You need to make the following preparations when using this 
product for the first time.
To measure distance and pace using the stride sensor, you need to run at least  
400 meters first with [Stride] set to [ON] and GPS on.
You can then use the stride sensor. You do not need to make these preparations from 
the second time.