Garmin Edge® 520 Bundle Owner's Manual

 Purple

Superior

 Blue

Excellent

 Green

Good

 Orange

Fair

 Red

Poor

VO2 max. data and analysis is provided with permission from 

The Cooper Institute

®

. For more information, see the 

appendix (

), and go to 

.

The success and accuracy of the VO2 max. calculation 

improves when your ride is a sustained and moderately hard 

effort, and where heart rate and power are not highly variable.
• Before your ride, check that your device, heart rate monitor, 

and power meter are functioning properly, paired, and have 

good battery life.

• During your 20 minute ride, maintain your heart rate at 

greater than 70% of your maximum heart rate.

• During your 20 minute ride, maintain a fairly constant power 

output.

• Avoid rolling terrain.
• Avoid riding in groups where there is a lot of drafting.

The device uses your user profile information from the initial 

setup to determine your heart rate zones. You can manually 

adjust the heart rate zones according to your fitness goals 

). For the most accurate calorie data 

during your activity, you should set your maximum heart rate, 

resting heart rate, and heart rate zones.

Select Menu > My Stats > Training Zones > Heart Rate 

Zones.

Enter your maximum and resting heart rate values.
The zone values update automatically, but you can also edit 

each value manually.

Select Based On:.

Select an option:
• Select BPM to view and edit the zones in beats per 

minute.

• Select % Max. to view and edit the zones as a percentage 

of your maximum heart rate.

• Select % HRR to view and edit the zones as a percentage 

of your resting heart rate.

Many athletes use heart rate zones to measure and increase 

their cardiovascular strength and improve their level of fitness. A 

heart rate zone is a set range of heartbeats per minute. The five 

commonly accepted heart rate zones are numbered from 1 to 5 

according to increasing intensity. Generally, heart rate zones are 

calculated based on percentages of your maximum heart rate.

Knowing your heart rate zones can help you measure and 

improve your fitness by understanding and applying these 

principles.
• Your heart rate is a good measure of exercise intensity.
• Training in certain heart rate zones can help you improve 

cardiovascular capacity and strength.

• 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 

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. 

The default maximum heart rate is 220 minus your age.

If the heart rate data is erratic or does not appear, you can try 

these tips.
• Reapply water to the electrodes and contact patches (if 

applicable).

• Tighten the strap on your chest.
• Warm up for 5 to 10 minutes.
• Follow the care instructions (

).

• Wear a cotton shirt or thoroughly wet both sides of the strap.

Synthetic fabrics that rub or flap against the heart rate 

monitor can create static electricity that interferes with heart 

rate signals.

• Move away from sources that can interfere with your heart 

rate monitor.
Sources of interference may include strong electromagnetic 

fields, some 2.4 GHz wireless sensors, high-voltage power 

lines, electric motors, ovens, microwave ovens, 2.4 GHz 

cordless phones, and wireless LAN access points.

NOTE: If you do not have this sensor, you can skip this task.
TIP: Garmin recommends you secure your bike on a stand while 

installing the sensor.

Place and hold the speed sensor on top of the wheel hub.

Pull the strap 

À

 around the wheel hub, and attach it to the 

hook 

Á

 on the sensor.

The sensor may be tilted when installed on an asymmetrical 

hub. This does not affect operation.

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 indicate 

activity after two revolutions.

NOTE: If you do not have this sensor, you can skip this task.
TIP: Garmin recommends you secure your bike on a stand while 

installing the sensor.

Select the band size that fits your crank arm 

À

 securely.

The band you select should be the smallest one that 

stretches across the crank arm.

On the non-drive side, place and hold the flat side of the 

cadence sensor on the inside of the crank arm.

Pull the bands 

Á

 around the crank arm, and attach them to 

the hooks 

Â

 on the sensor.

8

ANT+ Sensors