Laser Technology UltraLyte, Руководство пользователя

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B
ASIC
S
PEED
M
EASUREMENT
Electronic Copy of LTI’s UltraLyte User’s Manual – 7 th Edition June 1998
21
The figure at the top of the screen is the target’s
speed. The figure at the bottom of the screen is the
target’s distance from the mid-point of the
instrument.
Measuring a Moving Vehicle
To measure the velocity of a vehicle using the
UltraLyte, use the following procedure:
1. Aim the instrument at the license plate area of
the target vehicle and squeeze the trigger. A
low-pitched growl begins, indicating the
instrument is trying to acquire a lock on the
target.
2. Keep the trigger pressed and the instrument
sighted on the target until you hear a beep. A
high-pitched beep means that a speed was
captured; a low-pitched beep, that a
measurement error occurred.
The speed calculated for the target displays in the
LCD and in the scope. If the target was going
away from you when it was measured, the speed
displays as a negative number; if the target was
approaching, the speed displays as a positive
number.
As long as the trigger is kept pressed, your UltraLyte
instrument may retry the speed measurement,
depending upon its configuration, up to 10 times or
more. 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 cannot capture a
speed reading and displays an error message
instead.
The JAM Indicator
If your instrument is configured for it, the JAM
indicator on the back panel screen may blink during
a measurement, accompanied by the jam tone. It
indicates that the instrument is being flooded by light
and has had difficulty detecting its own signal.
For Internal Use Only. Not for Distribution.