Garmin Edge 820 Owner's Manual

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Garmin Edge 820 Owner's Manual Manual pdf 16 page image

2 Enter your maximum, lactate threshold, and resting heart ratevalues.You can use the auto detect feature to automatically detectyour heart rate during an activity. The zone values updateautomatically, but you can also edit each value manually.3 Select Based On:.4 Select an option:• Select BPM to view and edit the zones in beats perminute.• Select % Max. to view and edit the zones as a percentageof your maximum heart rate.• Select % HRR to view and edit the zones as a percentageof your heart rate reserve (maximum heart rate minusresting heart rate).• Select %LTHR to view and edit the zones as a percentageof your lactate threshold heart rate.About Heart Rate ZonesMany athletes use heart rate zones to measure and increasetheir cardiovascular strength and improve their level of fitness. Aheart rate zone is a set range of heartbeats per minute. The fivecommonly accepted heart rate zones are numbered from 1 to 5according to increasing intensity. Generally, heart rate zones arecalculated based on percentages of your maximum heart rate.Fitness GoalsKnowing your heart rate zones can help you measure andimprove your fitness by understanding and applying theseprinciples.• Your heart rate is a good measure of exercise intensity.• Training in certain heart rate zones can help you improvecardiovascular capacity and strength.If you know your maximum heart rate, you can use the table(Heart Rate Zone Calculations, page 23) to determine the bestheart rate zone for your fitness objectives.If you do not know your maximum heart rate, use one of thecalculators available on the Internet. Some gyms and healthcenters can provide a test that measures maximum heart rate.The default maximum heart rate is 220 minus your age.Tips for Erratic Heart Rate DataIf the heart rate data is erratic or does not appear, you can trythese tips.• Reapply water to the electrodes and contact patches.• Tighten the strap on your chest.• Warm up for 5–10 minutes.• Follow the care instructions (Caring for the Heart RateMonitor, page 19).• Wear a cotton shirt or thoroughly wet both sides of the strap.Synthetic fabrics that rub or flap against the heart ratemonitor can create static electricity that interferes with heartrate signals.• Move away from sources that can interfere with your heartrate monitor.Sources of interference may include strong electromagneticfields, some 2.4 GHz wireless sensors, high-voltage powerlines, electric motors, ovens, microwave ovens, 2.4 GHzcordless phones, and wireless LAN access points.Installing the Speed SensorNOTE: If you do not have this sensor, you can skip this task.TIP: Garmin recommends you secure your bike on a stand whileinstalling the sensor.1 Place and hold the speed sensor on top of the wheel hub.2 Pull the strap À around the wheel hub, and attach it to thehook Á on the sensor.The sensor may be tilted when installed on an asymmetricalhub. This does not affect operation.3 Rotate the wheel to check for clearance.The sensor should not contact other parts of your bike.NOTE: The LED flashes green for five seconds to indicateactivity after two revolutions.Installing the Cadence SensorNOTE: If you do not have this sensor, you can skip this task.TIP: Garmin recommends you secure your bike on a stand whileinstalling the sensor.1 Select the band size that fits your crank arm À securely.The band you select should be the smallest one thatstretches across the crank arm.2 On the non-drive side, place and hold the flat side of thecadence sensor on the inside of the crank arm.3 Pull the bands Á around the crank arm, and attach them tothe hooks Â on the sensor.4 Rotate the crank arm to check for clearance.The sensor and bands should not contact any part of yourbike or shoe.NOTE: The LED flashes green for five seconds to indicateactivity after two revolutions.5 Take a 15 minute test ride and inspect the sensor and bandsto ensure there is no evidence of damage.About the Speed and Cadence SensorsCadence data from the cadence sensor is always recorded. If nospeed and cadence sensors are paired with the device, GPSdata is used to calculate the speed and distance.Cadence is your rate of pedaling or “spinning” measured by thenumber of revolutions of the crank arm per minute (rpm).Data Averaging for Cadence or PowerThe non-zero data-averaging setting is available if you aretraining with an optional cadence sensor or power meter. Thedefault setting excludes zero values that occur when you are notpedaling.You can change the value of this setting (Data RecordingSettings, page 18).12 ANT+ Sensors