Page 22 - Laser Technology, Inc. LTI 20/20 TruSpeed Metric User’s Manual 3rd Edition
Copyright (c)[2013] Laser Technology, Inc. All rights reserved. Unauthorized duplication, in whole or in part, is strictly prohibited
Using the Weather Mode
Moisture is reflective. Weather such as rain, snow, or fog can make it difficult for
the laser to receive signals back from the target. This is especially true when you
are trying to capture speeds at close range. The TruSpeed includes a built-in
Weather Mode that is an alternate speed measurement mode. When the Weather
Mode is active, the factory-defined gate setting increases the instrument's
minimum range from 15 meters to 61 meters. Increasing the minimum range
ensures that the laser only acquires targets beyond the range where weather
affects the laser's ability to capture a speed reading.
When the Weather Mode is active:
•
The Weather Mode indicator appears in the lower left corner of the LCD
Screen.
•
Targets must be a distance greater than 61 meters.
•
The instrument's maximum range is not changed.
•
Other than the above items, the TruSpeed operates the same as when
the Speed Mode is active and the Weather Mode is not active.
To activate the Weather Mode.
1. Ensure that the TruSpeed is powered ON
and that the Speed Mode is active.
2. Press the
button. The display should
look similar to Figure #18.
3. Use the aiming reticle to aim the
instrument at the target vehicle's license
plate area and press the TRIGGER.
4. 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 single beep means that a speed was captured.
The measured speed will be displayed on the LCD and projected
in the scope just below the aiming reticle.
While the instrument is attempting to lock onto the target, as long as the
TRIGGER is kept pressed, it will retry the speed measurement.
•
In this mode, the instrument will try up to 3.5 seconds. 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.
Figure #18
