[. . . ] Forerunner 910XT ® owner’s manual September 2013 190-01371-00_0D Printed in Taiwan © 2011–2013 Garmin Ltd. Under the copyright laws, this manual may not be copied, in whole or in part, without the written consent of Garmin. Garmin reserves the right to change or improve its products and to make changes in the content of this manual without obligation to notify any person or organization of such changes or improvements. Go to www. garmin. com for current updates and supplemental information concerning the use of this product. [. . . ] • Knowing your heart rate zones can prevent you from overtraining and can decrease your risk of injury. If you know your maximum heart rate, you can use the table (page 49) to determine the best heart rate zone for your fitness objectives. If you do not know your maximum heart rate, use one of the calculators available on the Internet. Some gyms and health centers can provide a test that measures maximum heart rate. • Heart rate zone calculations (page 49) • Heart rate data fields (page 36) • Heart rate troubleshooting (page 48) Foot Pod Your Forerunner is compatible with the foot pod. You can use the foot pod to send data to your Forerunner when training indoors, when your GPS signal is weak, or when you lose satellite signals. The foot pod is on standby and ready to send data as soon as you install it or start moving. Approximately five hours of battery life remain. Choosing Your Speed Source More Heart Rate Options • Heart rate alerts (page 9) 24 If you plan to train outdoors, you can set the Forerunner to use foot pod data to calculate pace rather than using GPS. 1 Select MODE > Settings > Run Settings > Foot Pod > Yes. ANT+ Sensors 2 Select Speed Source > Foot Pod. About Foot Pod Calibration Calibrating your foot pod is optional and can improve accuracy. There are three ways to adjust the calibration: distance, GPS, and manual. 1 Select MODE > Settings > Run Calibrating Your Foot Pod by Distance For best results, the foot pod should be calibrated using the inside lane of a regulation track. A regulation track (2 laps = 800 m) is more accurate than a treadmill. 1 Select MODE > Settings > Run Settings > Foot Pod > Calibrate > Distance 2 Select a distance. The Forerunner informs you that you have traveled far enough. Calibrating Your Foot Pod Manually If your foot pod distance seems slightly high or low each time you run, you can manually adjust the calibration factor. 1 Select MODE > Settings > Run Settings > Foot Pod > Calibration Factor. • Decrease the calibration factor if your distance is too high. Calibrating Your Foot Pod by GPS You must have GPS signals to calibrate the foot pod using GPS. ANT+ Sensors  25 Bike Sensors Your Forerunner is compatible with the GSC 10 speed and cadence bike sensor. For a list of third-party ANT+ sensors that are compatible with the Forerunner, go to www. garmin. com/intosports. GSC 10: one for cadence and one for speed. For information about cadence alerts, see page 9. Training with a Bike Sensor Non-Zero Averaging for Cadence Data Before you start training, you must be in bike sport mode, and you must pair the GSC 10 with your Forerunner. 1 Select MODE > Settings > Bike Settings > bike name > ANT+Spd/ Cad. 3 If necessary, select More to select the sensor type. The non-zero data-averaging setting is available if you are training with an optional cadence sensor. The default setting is to include zero values that occur when you are not pedaling. To turn the non-zero averaging on or off, select MODE > Settings > Bike Settings > Data Averaging > Cadence. Power Meters About the GSC 10 Cadence data from the GSC 10 is always recorded. If there is no GSC 10 paired, GPS data is used to calculate the speed and distance. [. . . ] If there is new software available, Garmin Connect alerts you to update the software. 3 Keep your device in range (3 m) of the computer during the update process. You can find more information about this product on the Garmin web site. • Go to http://buy. garmin. com, or contact your Garmin dealer for information about optional accessories and replacement parts. Getting More Information Forerunner Troubleshooting Problem Solution The keys do not 1 Hold until the screen goes blank. [. . . ]