Vericom VC4000, Руководство пользователя

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VC4000 Manual 20
3.
From the “READY” screen press the
2
Bra king
key with the
vehicle at a complete stop. The VC4000 will zero adjust the
accelerometers, show the available record time in seconds,
display the run number being saved, and then display:
4. Position the vehicle before the test area allowing enough
distance to accelerate to your desired target speed. (As an
example back up approximately 300 feet). A typical braking
test speed on dry pavement is 30 mph for vehicles equipped
with standard brakes and 45 mph for vehicles equipment
with ABS.
5. Press the
Auto Start
key. The VC4000 will display 'Auto-
Start-Ready' and the current G reading.
6. Accelerate the car to the desired initial braking speed. After
reaching the desired initial braking speed, hit the brakes
hard and fast, applying maximum brake pedal pressure until
the vehicle comes to a complete stop.
7. If you wish to do another skid test on the same slope (in the
same direction) do not press the CLEAR / NO key and the
VC4000 will retain the calibration for that grade. Press the
Braking key and repeat step #4.
Drag factor (f) = coefficient of friction (

) ± the slope. If you wish to
measure

on a slope you must zero adjust on a flat and level
surface.
PUSH
AUTO START
Measuring Coefficient of Friction