GEONAUTE ONrhythm 310, Fitting Procedure

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Similarly, athletes in good health must take into account the fact that determining your maximum heart rate
and personal training zones are vital elements in designing an effective and risk-free training programme.
We recommend that you seek advice from your doctor or health adviser to set your maximum heart rate,
your upper and lower heart rate limits and the frequency and duration of exercise suitable for your age,
physical condition and desired results.
Finally, as a result of possible disturbance caused by the radio transmission system, we do not recommend
that users of heart stimulators use a heart rate monitor which uses this form of technology.
Not observing these precautions may put your life at risk.
3 / The chest strap
Fitting the chest strap
The installation process for the strap is explained at the start of these instructions (diagram 1). The chest
strap serves as a sensor and transmitter. It measures the differences of potential created by the heartbeat
on the surface of the skin. It transmits this information
to the watch by radio signal. The quality and accuracy
of its measurements and comfort during use depend on
it being correctly positioned. As shown in the diagram,
the sensors are black rubber surfaces either side of the
central part.
When correctly placed, the strap sends heart rate information to the watch. Located in the reception cone
(diagram 2), the watch displays the heart rate and other information (target zone, exercise intensity... ) to
optimise your fitness and training.
Avoid positioning the sensors in overly hairy areas. In cold and dry climates,
the strap may need several minutes to work properly. This is perfectly normal
as the sensors need a film of sweat to ensure contact with the skin. When
measurements start, the watch may indicate very high values for around 20
seconds. This is due to the initialisation of the algorithm. It will display correct
values following initialisation. Take care when inserting the elastic strap binding
into the hole designed to house the strap. Hold the pin while passing your finger
behind the strap.