Vericom VC4000, Руководство пользователя

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VC4000 Manual 21
1. Drive to an area that is flat and level.
2. To power on, press the
POWE R
key and hold for 1 second
until the unit beeps.
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.
NOTE: The Average Gx will be the Coefficient of friction (

), not drag
factor because you zero adjusted on a level surface.
Information available after a brake test
Use the up

5 and down

0 arrow keys to scroll the data up and
down.
Elapsed Time (E/T):
The time from when the VC4000 was
activated (see threshold page 65) until the
vehicle came to a complete stop.
PUSH
AUTO START