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Exercise may include some risk, especially for those who have been sedentary. We
strongly advise consulting your doctor prior to beginning a regular exercise program.
2.4.3. Use of Suunto X6hr and Transmitter Belt in water
Heart rate measurement in water is technically demanding for the following reasons:
• Pool water with a high chlorine content and seawater may be very conductive and the
electrodes of the transmitter may get temporarily short-circuited and the transmitter
unit cannot detect ECG (=electrocardiogram).
• Jumping into the water or strenuous muscle movement during competitive swimming
may cause water resistance that shifts the transmitter on the body to a location where
it cannot pick up the ECG signal.
• The ECG signal strength varies depending on the individual’s tissue composition.
People have more problems with heart rate measurement in water than
elsewhere.
2.4.4. Activating the Heart rate monitor
To activate the heart rate monitor:
1. Attach the transmitter to the elastic strap.
2. Adjust the strap length to fit snugly and comfortably. Secure the strap around your
chest, below the chest muscles. Lock the buckle.
3. Raise the transmitter a little off your chest and
wet the grooved electrode areas
on the backside. It is important that these electrodes are wet during the exercise.
4. Check that the wet electrode areas are firmly against your skin and the logo is in a
central upright position.
5. Wear the Suunto X6
hr as you would wear an ordinary watch.
6. Go to the Chrono mode and wait until the heart rate reading appears on the bottom