Raven Envizio Pro, Инструкция по установке и эксплуатации

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Appendix A
188 Envizio Pro™ and Envizio Pro II® Installation and Operation Manual
4.
Drive 1 mile [1 kilometer]. The field computer will measure the distance driven using the original (or last
programmed) speed cal.
Note:
Accelerate and decelerate slowly. To achieve the most accurate calibration, do not use the
vehicle odometer or the field computer distance display to measure the actual distance driven. Use
section lines or highway markers to determine the actual distance.
5.
At the end of the driven distance, view the distance display again and record the value.
a.
The field computer distance should read a value of approximately 5280 [1000]. If the display reads
between 5260-5300 [990-1010], the default value of 598 [152] is accurate for the speed cal value.
b.
If the distance displayed is not between 5260-5300 calculate the speed cal with the formula:
where CSC = Corrected Speed Cal, OSC = Old Speed Cal (speed cal number used to drive the test
distance) and D = the field computer Distance reading. Round to the nearest whole number.
For Example:
Assume that the field computer odometer reads 5000 [980] after a known 1 mile distance has been driven
using an initial speed cal value of 598 [152].
or
The Corrected Speed Cal value is 631 [155].
6.
Touch the Speed button and use the keypad to enter the new value as the speed cal.
7.
Verify the new speed cal derived in step 5 by repeating step 2 through step 4.
Wheel Drive Speed Sensor
1.
Mark the tire on which the speed sensor is installed using chalk or a piece of tape as shown below.
2.
Mark the corresponding spot on the ground.
3.
Count 10 full revolutions of the wheel while traveling in a straight path. The mark must stop with the chalk or
tape in the same orientation that it began at the starting point.
FIGURE 1.
Calculating the Speed Cal with a Wheel Magnet Speed Sensor System
CSC
OSC 5280
×
D
------------------------------
=
CSC
598 5280
×
5000
---------------------------
631.48 = =
CSC
152
[ ]
1000
[ ] ×
980
[ ]
-------------------------------------
155
[ ]
= =