Section #3 - Test Mode and Instrument Tests - Page 29
Copyright (c)[2013] Laser Technology, Inc. All rights reserved. Unauthorized duplication, in whole or in part, is strictly prohibited
Fixed Distance Zero Velocity Test
The Fixed Distance Zero Velocity Test requires one target:
LTI recommends using a target
distance which is a whole meter for
ease of use. However, if a distance
of a whole meter is not available, a
tenth of a meter will work. Please
note, the distance to the target
must be accurately measured with a
certified measuring device, and the
distance to the target must be
greater than the minimum distance
of the instrument which is 15.25
meters. For the purpose of this
example, a distance of 60.0 meters
is used.
The operator should hold the center of the TruSpeed directly over the middle of
the measurement cross or shooting mark.I the surveyed distance is from the
center of the shooting mark on the ground to the base of a wall, the operator
should hold and aim the instrument parallel to the ground to achieve a straight
and level path from the instrument to the target.
1. Stand over the shooting mark.
2. Ensure the TruSpeed is powered ON and that the Speed Mode is active.
3. Use the reticle to aim to the target.
4. Press the TRIGGER.
5. Check the results of the measurement on the display.
The speed reading should be zero km/h.
A measurement of zero km/h verifies the
timing accuracy of the instrument and is
identical in nature to an accurate
velocity reading of a vehicle moving
at any speed.
The displayed distance should read from
59.8 to 60.2 meters if your fixed distance
was 60 meters.
The Fixed Distance Zero Velocity Test is not one of the options included
in the Test Mode. In order to perform the Fixed Distance Zero Velocity
Test, the Speed Mode must be active.
• Speed accuracy = 2 km/h.
• Distance accuracy = 15 cm or 0.2 meters (rounded).
• If you need assistance, contact Laser Technology, Inc.
See the inside front cover for LTI contact information.
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