How to calibrate distance using the GPS method
This distance calibration method is based on using GPS speed. GPS speed is most accurate when driving in a straight line at a constant speed.
Step 1: Adding a speed gauge to the screen (ie: On page 1 of the UltraGauge)
Press the menu button and then access Gauge/Page Menu – Select Gauge/Page – Select Gauges – Page 1 Gauges
Use the up and down keys to navigate to the KPH gauge
Press Menu, this will cause the cursor to blink
Press up and down until the number 1 is next to the KPH gauge
Press Menu again to lock the gauge into page 1, position 1
Leave the menu by pressing back etc
The UltraGauge should now be displaying the KPH gauge on page 1, position 1 (top left hand corner of the screen)
Step 2: Take you calculator and GPS speed device (ie: iPhone) to your car and head to a stretch of road, preferably a long straight stretch of road
Step 3: While driving at a constant speed for around 30 seconds, note the speed reading output on both the GPS speed device (ie: iPhone) and the readout on the UltraGauge. The readings could be different.
Step 4: Find a safe place to pull over and park. With your calculator complete the following, GPS speed divided by UltraGauge speed
Step 5: Adjust the ‘Distance Cal’ factor in your UltraGauge
Navigate to Menu – Vehicle Setup – Calibration – Calibrate Distance
Note the distance value shown by the UltraGauge and on the calculator multiply this by the factor found in step 4
Press Menu and then press up or down to adjust the distance value to the calculated value
Press Menu to store the updated distance value. The UltraGauge now shows the Disatance cal value
Leave the Menu by selecting back etc
Step 6: To check the values are correct please drive along and check once again the GPS speed device value versus that of the UltraGauge output speed
Step 7: Make fine adjustments as required by re-completing the above steps to correct UltraGauge speed output value
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