ST700 Dash Display SystemMemory and Setup
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measurement, together with the number of pulses, to calculate and
display the vehicle speed and the odometer distance. The accuracy
with which you measure this value has a direct influence on the ac-
curacy of the speed and distance measurements.
Accel limit—Press and turn the rotary control to adjust the accelera-
tion limit setting, which prevents the ST700 Dash Display System re-
sponding to apparent extremes of acceleration caused, for example,
by wheel spin. If wheel spin occurs on the wheel that has the wheel
speed sensor, the speed reading from the sensor will step almost in-
stantaneously to a much higher level. This would give errors in the
measurement of distance and split times. To avoid this, the ST700
Dash Display System allows you to set the maximum acceleration so
that it then filters the signal to give more accurate indications of
speed and distance.
Unless you have access to a reliable method for measuring accelera-
tion, you should set this value experimentally. For guidance, an accel-
eration of 1G applied for 3 seconds will accelerate the vehicle from
zero to 106 km/h or 66 MPH.
Decel limit—This function works in a similar way to the acceleration
limit described above, but applies for deceleration. It prevents the
displayed speed from instantaneously reducing if the wheel that in-
cludes the speed sensor locks during heavy braking, for example.
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