MSC-3Dx 13MODE LT+SETSETMODELAPS/SNOTE !: Wheel Circumference A and B.Wheel circumference is specifically programmed for road riding andwheel circumference is programmed for low speed sensitivity. If you areusing this unit on a mountain bike, we recommend using the calibrationnumber for riding.The initial setting of the wheel circumference is as follows:Wheel Circumference ------ 2096 (27 inch Standard Tire: 700 x 23C)Wheel Circumference ------ 2050 (MTB 26 x 1.95 Tire)Switching Between Wheel Circumference A and BElapsed time TM must not be running to switch settings.Navigate to the Total Distance ODO on the lower display and push SET/AT button toenter the wheel circumference setting screen.Push MODE and LT buttons simultaneously to switch between and wheelsettings.Checking Wheel CircumferenceYou can check the current wheel circumference in the ODO mode by pressing theMODE and S/S buttons simultaneously.Changing Wheel CircumferencesTo change the wheel circumference navigate to Total Distance ODO. (The Elapsedtime TM can not be running.) Perform steps 3 through 5.Setting Clock Time1. The Elapsed time TM must be turned off. The "bpm" icon of the middle display cannot be flashing.2. Navigate to the Clock Time in the lower display3. Push SET/AT button. The display enters the clock time set up screen and the hourflashes.4. Press MODE button to increase and LAP button to decrease the number.Hold down the button for rapid advancement.5. Push S/S button. The minutes flash.6. Press MODE button to increase the digits and LAP button to decrease.Hold down the button for rapid advancement.7. Push SET/AT button. Clock time is now set.NOTE:The digits for second becomes zero (:00) when SET/AT button is pressed.wheelcircumference Awheelcircumference BClock time settingscreenIncrease the numberDecrease the numberTime unit switchingCompletes the clocktime settingODO