Timex WS4, W253, 810-095009-NA user manual Calibration Mode

NOTE: While setting an alarm, quickly scroll through the setting values by holding down START/SPLIT (+) or STOP/RESET (-).

—The AM/PM value will (+) only appear if you have set the watch to display the 12-hour format.

When the alarm is armed, a bar is shown in alarm and time of day modes above the alarm icon.

CALIBRATION MODE

The WS4™ watch has the ability to take extremely accurate measurements. You should calibrate either the Altimeter (HOME) or the Barometer (BARO), and the Weather Icon (WEATHER) prior to first use. And, as with any precision instrument, you should calibrate frequently to maintain accuracy.

NOTE: For the best accuracy, choose the calibration method based on the most accurate reference source available. For example, if you are standing at a trail head and know the correct altitude, then the most accurate calibration will be altitude. If you don’t know your altitude, you can find out the current sea level pressure (published online or in a newspaper) and calibrate the sensor to barometric pressure.

The watch also has five Altitude Reference Points (REFERENCE HOME, REFERENCE BASE 1, REFERENCE BASE 2, REFERENCE BASE 3, and REFERENCE MAN-ALT) which allow you to set the altitude of a known location ahead of time, E and then re-calibrate your watch at that point with one push of a button.

		PEAK
		(BASE 2 ALTI)
	TRAIL HEAD	(2000 M)
	(BASE 1 ALTI)
	(1200 M)
		LODGE
HOME		(BASE 3 ALTI)
		(1000 M)
(HOME 1 ALTI)		EXAMPLE: FAVORITE HIKE
(ie. 800 M)

ATTENTION: Sudden changes in barometric pressure can impact your altimeter reading. If possible, re-calibrate to a known altitude when drastic pressure changes occur.

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