DAVIS DriveRight 500AL Manual (8155) - Manual (Page 14)

Page 10
Calibration Using the Odometer
In order to calibrate using the odometer, you must compare
a distance reading taken from your vehicle’s odometer to
the Trip 500AL and adjust the Trip 500AL to match the vehi-
cle’s odometer. Depending on how far you drive in order to
calibrate the unit, this can result in an extremely accurate
calibration.
NOTE: We recommend that you drive a minimum of 32km (20
miles) when calibrating the unit.
Your vehicle’s speedometer and odometer may not be per-
fectly linked. If they differ and you calibrate your Trip
500AL using the vehicle’s odometer, you may notice a dis-
crepancy between the Trip 500AL’s speed readings and the
vehicle’s speedometer.
1. Obtain a rough calibration, using the speedometer as
described in “Calibration Using the Speedometer” on
page 7.
2. Reset your vehicle’s trip meter to zero or make a note of
the odometer reading.
3. Make sure you have a new trip started on the Trip 500AL
(i.e., the distance travelled is 0.
To forcibly start a new trip, log out (see page 14 for
details).
4. Drive the vehicle for at least 32 km (20 miles).
The further you drive, the more accurate your calibration.
5. When you finish driving, compare your vehicle’s trip
meter reading to the distance travelled reading on the
Trip 500AL.
At this point, what you will need to do is increase or
decrease the distance measured by the Trip 500AL until it
agrees with your vehicle’s odometer reading. This is
accomplished from the calibration screen.
6. Press and hold MODE to access the settings screens.