DAVIS DriveRight 600E Users Guide (8126, 8179) - Manual (Page 11)

7
Calibrating the DriveRight 600
E
Be aware that the DriveRight 600
E
responds to changes in speed
faster than most vehicles’ speedometers. To accurately compare,
drive steadily at one speed for a short time.
8. Fine tune the calibration by pressing PLUS or MINUS.
Each time PLUS or MINUS is pressed, the DriveRight 600
E
speed
reading adjusts up or down. Depending on the speed of the vehicle
and the calibration, a change in the speed reading in the Calibration
Screen may or may not display each time a button is pressed.
Note: Pressing and holding PLUS or MINUS increases the rate at which the DriveRight
600
E
adjusts the speed reading.
9. Continue to press PLUS or MINUS until the DriveRight 600
E
’s
speed reading agrees with the vehicle’s speedometer at a variety of
speeds.
10. When you are finished calibrating, press and hold MODE until the
Current Readings Screen displays. All calibration information is
automatically saved.
Note: Do not press and hold SET/CLEAR in an effort to save the fine-tuned calibration.
The DriveRight 600
E
resets the calibration number if SET/CLEAR is pressed.
Calibrating Using Distance Readings
To calibrate using the vehicle’s distance reading instead of its speed
readings, compare a distance reading taken from the vehicle’s odometer
to the DriveRight 600
E
distance reading and adjust the DriveRight
600
E
to match the vehicle’s odometer.
Note: Davis Instruments recommends that you drive a minimum of 32km (20 miles)
when calibrating the DriveRight 600
E
using its distance reading.
The vehicle’s speedometer and odometer may not be perfectly linked.
If the two readings differ and the DriveRight 600
E
has been calibrated
using the vehicle’s odometer, a discrepancy between the DriveRight
600
E
’s speed readings and the vehicle’s speedometer may exist.
1. Obtain a rough calibration, using the speedometer as described in
“Calibrating Using the Speedometer” on page 5.
2. Reset the vehicle’s trip meter to zero or note the odometer reading.
3. Start a new trip on the DriveRight 600
E
(i.e., the distance traveled is
0) and make sure the Current Readings Screen is being displayed.
To forcibly start a new trip, log out (see page 11 for details).
4. Drive the vehicle for at least 32 km (20 miles). The calibration
becomes more accurate the further the vehicle is driven.