2 Forerunner ® 205/305 Owner’s ManualtraInInGUsing Cadence AlertsNote: Cadence alerts are a featureof the Forerunner 305 only and canonly be set n Bkng mode.If you own an optional Garmincadence sensor (GSC ™ 10), youcan use cadence alerts. Thecadence alert notifies you if yourcadence exceeds or drops belowa specific number of revolutionsof the crank arm per minute(rpm).Setting a cadence alert is similarto setting a heart rate alert. Themaximum cadence value allowedis 255. Be sure to change toBiking mode when setting acadence alert.For more information aboutGarmin cadence sensors, visitwww.garmin.com.training with CadenceCadence is your rate of pedalingor “spinning” measured by thenumber of revolutions of thecrank arm per minute (rpm).There are two sensors on theGSC 10: one for cadence andone for speed. Cadence datafrom the GSC 10 is alwaysrecorded. The speed data fromthe GSC 10 is only recorded andused for distance calculationwhen the GPS signal is weak orthe GPS is turned off.For information about speedzones, see page 50.