T
IME
O
VER
D
ISTANCE
M
EASUREMENT
Electronic Copy of LTI’s UltraLyte User’s Manual – 7
th
Edition June 1998
30
Notes on Using TOD
•
Reference points can be any visually detectable
and stationary marks on or near the roadway.
•
If you are measuring the distance with the
UltraLyte, make sure you are directly in line with
both targets.
•
It's important that you use the same part of the
vehicle to start and stop timing. If you start the
clock when the headlights pass the first
reference point, for example, stop the clock
when the headlights pass the second. In that
way, your response time pressing the trigger
assures a consistent measurement.
•
When you start the clock, the instrument begins
to tick so you know the clock is running. The
ticking noise continues until you stop the clock.
•
You may continually clock vehicles between the
chosen reference points. The distance originally
entered is used to calculate the speed of each
vehicle.
•
To set up for a different pair of reference points,
exit back to the main TOD screen by pressing
the Select/Edit button. Then repeat the
procedure for entering the distance.
•
The instrument remembers the distance entered
even with power turned off. When you power
back on, press the Speed/Options button, then
the Select/Edit button to re-enter TOD and
resume clocking vehicles.
•
TOD determines the average speed of a vehicle
over a measured distance; it does not capture
peak speed.
For Internal Use Only. Not for Distribution.
Summary of Contents for UL100
Page 1: ...For Internal Use Only Not for Distribution...
Page 70: ......
