Section #4 – Instrument Tests 38
Electronic Copy of LTI's UltraLyte LR B User's Manual - 2
nd
Edition © 2002
When setting up an area for these tests, LTI recommends:
• Permanently installing the test area in a convenient location.
The test area must establish a permanent, known distance
between a shooting mark and a target (Fixed Distance Test)
or between a shooting mark and two targets (Delta Distance
Test).
• Using a metal tape to measure the distance; this will ensure
that the measurement is accurate.
Other considerations:
• The shooting mark is where the operator stands to do the test,
and can be an “X” painted on the pavement.
• A target can be any flat, permanent structure—a sign or wall,
for example—painted with a bull’s eye or other aiming point.
• The shooting mark and the target(s) must form a straight line.
• The distance specified is horizontal distance. Horizontal
distance is measured along a straight, level path from the
shooting mark to the center of the aiming point.
• The manner in which you stand and hold the instrument both
affect the test measurements. For exact readings, carefully
hold the instrument so it is directly over the middle of the X.
Fixed Distance Test
The Fixed Distance Test requires one target.
If your UltraLyte LR B measures Miles per Hour and Feet
,
LTI recommends that the target should be 175 feet from the shooting
mark. See Figure 27(A) on page 39. If there is not enough space
available, that specific distance is not crucial. However, the distance
between the target and the shooting mark must be a multiple of 1 foot,
not a fraction of a foot.
If your UltraLyte measures Kilometers per Hour and meters
,
LTI recommends that the target should be 60 meters from the shooting
mark. See Figure 27(B) on page 39. If there is not enough space
available, that specific distance is not crucial. However, the distance
between the target and the shooting mark must be a multiple of
1 meter; not a fraction of a meter.
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