E10may cause even a greater change. In seemingly stable weather conditions, youmay expect to see the Altitude fluctuate as much as 100 feet from morning toevening because of the warming aspects of the sun on the atmosphere.2. Cycling Mode (Bicycle Symbol: on) (Fig. 10)When using this unit on bicycle, switch on the bicycle symbol. In this way, thechange of the pressure will have an influence on the altitude data only when theunit perceives the speed signal, regardless of start/stop. Thus, the altitude datawill not be affected even if pressure changes occur while bicycle is stopped. (Fig.11).Note: If the pressure changes while riding, the altitude data will give an error.3. Continuous Measuring Mode (Bicycle Symbol: off)When using this unit on its own apart from a bicycle, for hiking etc., switch off thebicycle symbol. In this way, the altitude data is always influenced by the change ofthe pressure (Fig. 12).• In this mode, if the Auto (automatic start/stop) function is on, the elapsed timecannot be measured; switch off the AT symbol and operate with the S/S buttonin each start/stop. (Refer to "Auto Function", page 12.)Note: As the pressure changes constantly, the altitude data will give an error tosome extent. * Release the power saving function by pressing the S/S button orthe Mode button.Fig.104. How to Switch on/off the Bicycle SymbolTo switch on(off) the bicycle symbol, first display the sub mode showing trip altitude gain and total altitude gain, withthe operation of the Mode button, and press the Set button. Then press the Set button again, and the bicycle symbolwill be switched on(off).5. How to Correct the Current AltitudeAir pressure changes constantly, due to various weather conditions. As such, while riding, it is necessary to correctthe altitude. It is recommended to make corrections whenever a reliable index (such as map or peak pointer) isavailable.* The basic knowledge of the altitudes of your house, public facilities, etc. will be useful information for correction.Affected by pressure changeSymbol off Pressure changeLapse of timeRiding Stopped RidingAltitudeFig.12Pressure changeLapse of timeRiding Stopped RidingSkipped pressure change AltitudeNeglecting pressure changeSymbol onFig.11