Oregon Scientific RX109 user manual SET the SEA-LEVEL Pressure, View the SEA-LEVEL Pressure

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SET THE SEA-LEVEL PRESSURE

Sea level pressure can change relative to location. To achieve accurate altitude readings, set the sea-level pressure value before every trip. Check the newspaper, local news station, trail marker, or weather forecast for local readings, and always select the reading nearest to your present location.

Diagram	Instructions
	1.	While in ALTI-BARO Mode, press SELECT/+ until
		the SEA (sea pressure) screen is shown.
	2.	Press and hold FUNC/SET for two seconds, then
		use SELECT/+ or ST/SP/- to change the value.
		The value will change in increments of 1 hPa or
		.03 inHg, depending on the measurement unit you
		selected in CLOCK Mode (see CLOCK mode).
	3.	Press FUNC/SET again when finished.

NOTE The altitude reading will change according to the sea level pressure adjustment.

VIEW THE SEA-LEVEL PRESSURE

To view a graphical image of the current sea level pressure reading, press FUNC/SET with the SEA screen shown in ALTI-BARO Mode. Press again to return to normal display.

SET ALTITUDE ALERT

The watch can be set to remember an altitude limit (either up or down, but not both simultaneously). If the alarm is activated, a series of beeps (at 5 second intervals) will sound, and the mode bar will blink, when you breach the limit. To end the alert, press any button.

To set the alert limits and activate or deactivate the alert:

Diagram	Instructions
	1.	PressSELECT/+ until you reach the Alarm screen.
		(Display reads 'AL' or 'NoAL' at the bottom)
	2.	Press and hold FUNC/SET for two seconds.
	3.	You may set the arrow at the bottom of the screen
		to a ascending, or descending limit (but not both).
		To change direction, press SELECT/+ or ST/SP/-
		.
	4.	Press FUNC/SET again, then press SELECT/+ or
		ST/SP/- to change the altitude limit. (The alarm will
		be automatically activated once the limits are set).
	5.	Alternatively press ST/SP/- if you simply want to
		accept a preset altitude alert setting. (Activated
		[AL] or deactivated [NoAL]).

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