Section #2 – Speed Measurements 27
Electronic Copy of LTI's UltraLyte LR B User's Manual - 2
nd
Edition © 2002
As a general rule, do not exceed 10 feet off the road for
every 100 feet shooting down range to the targets.
If target vehicles will be 500 feet down the road, set up
no more than 50 feet off the road.
Measuring a Moving Vehicle
Refer to the instructions below to use the UltraLyte LR B to measure the
speed of a moving vehicle.
1. Ensure that the UltraLyte LR B is powered ON and that the
Speed Mode is active.
2. Use the sighting scope to aim the instrument at the target
vehicle's license plate area and press the TRIGGER.
3. Continue to press the TRIGGER and keep the instrument
sighted on the target
•
A low-pitched growl
means that the instrument is
attempting to lock onto the target.
•
A low-pitched beep
means that a measurement error
occurred. An error code will be displayed.
•
A high-pitched beep
means that a speed was captured. As
long as you hold the TRIGGER, the instrument will
continue to take speed measurements. The measured
speed will be displayed on the LCD screen and will be
projected on the scope, just below the aiming dot.
While the instrument is attempting to lock onto the target, as
long as the TRIGGER is kept pressed, it will retry the speed
measurement.
• Depending upon its configuration, the instrument will
try up to 10 times or more. Information is
accumulated until it gets a good measurement or
generates an error code.
• Consequently, it is very important that the aiming
point on the target remain constant for the entire
measurement time. If you move the instrument off
the aiming point, it will generate an error code
instead of capturing a speed reading.
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