Page 6Changing Units of MeasureTo change units of measure, press and hold SET/CLEAR forat least 2 seconds while viewing the Current Readingsscreen. You may also change units from the Limit and UnitsSettings screen by pressing SET/CLEAR unit either the km/hor MPH segment is flashing, and then pressing PLUS to tog-gle between the two units of measure.You may change the date display format from the DateEntry screen and the time display format from the TimeEntry screenCALIBRATING THE TRIP 500ALYou must calibrate the unit before it will report the correctspeed distance, deceleration, and acceleration. Calibrationadjusts the unit to work properly with your vehicle’s VSS sig-nal or with the vehicle’s differential and tire size.Calibrating from the Software (VSS Only)If you have the DriveRight Vehicle Management Softwareand a VSS Trip 500AL, you may quickly and accurately cali-brate the unit using the software, provided you know thepulses per mile used by your vehicle’s VSS (vehicle speedsensor). Contact your dealer’s service department for thenecessary information.1. Install the DriveRight Vehicle Management Software.2. Connect the Trip 500AL to your computer.Consult the documentation supplied with the softwarefor instructions.3. Start the DriveRight Vehicle Management Software.4. Choose Set DriveRight from the DriveRight menu.The Set DriveRight dialog box opens. You will see a VSSPulse button within this dialog box.