Weather Forecasting
The watch can predict the weather for the upcoming 4 - 6 hour period based on the air pressure trend information for the previous twelve hours. The weather forecast is indicated at the top of the watch display by a series of symbols. Generally, if the air pressure is rising, the weather situation is considered to be improving and is indicated by the presence of the sun symbol. If the air pressure trend is falling, then the weather situation is worsening and is indicated by showing the clouds and/or precipitation symbols.
The weather forecast is always visible in TIME and BARO modes and visible in ALTI mode when no altitude changes are detected.
CONDITIONS
14
Notes on calibrating the Altimeter and Barometer
The watch relies on a sensitive electronic sensor to measure the air pressure and temperature. This sensor must be calibrated periodically to maintain the high degree of accuracy you expect from the watch.
What is calibration?
“Calibration” is simply a technique to improve the accura- cy of the pressure/temperature sensor, primarily by com- pensating for local temperature and weather effects. The watch employs two related methods of calibration, using either sea level pressure or the local altitude as a refer- ence, depending on the watch mode used for calibration.
How often should I calibrate?
Timex recommends that you calibrate the sensor prior to any activity where you will be using the altimeter feature
15
