Suunto T6C User Manual download pdf (Page 20)

3.5 Setting reference altitude

To ensure you get correct altitude readings, you first have to set an accurate reference

altitude. To do this, go to a location where you know the altitude, for example, with the

help of a topographical map, and set the reference altitude to match the map reading.

Suunto t6c constantly measures absolute air pressure. Based on this measurement and

your last altitude reference value, it estimates the current altitude.

NOTE: Changes in local weather conditions will affect altitude readings. If local weather

changes often, it is advisable to reset the current altitude reference value frequently,

preferably before starting your journey when the reference values are available. If local

weather is stable, you do not need to set reference values.

To set the reference altitude:

1. In the settings menu, enter REFER.

2. Change the value with [Lap +] and [Light -].

3. Accept the setting with [Mode].

4. Press [Start Stop] to exit.

Possible real life situation: Using altitude measurement during training

You participate in half marathon. Before you start the race you set the correct reference

altitude to your Suunto t6c. You start the log recorder and set off. During running you

compare your current altitude to the altitude at the start. At some point you notice that the

altitude value has decreased. You realize that the rest of the route is going to be uphill,

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Suunto T6C User Manual Page 20