5
PROCHRONO DLX
USER MANUAL / OPERATING INSTRUCTIONS
Electrical Interference
It is unlikely but possible that use of the chronograph in close proximity to a radio
tower, microwave tower, or large power facility could cause errors and functional
problems. Avoid use in these areas if you encounter these problems.
Using the Chronograph Indoors
Common problems that occur indoors include the following:
Not Enough Light
Indoor lighting is often not suitable for use with the chronograph. Most
common incandescent lamps positioned directly above the chronograph are
not a good light source because they provide an uneven amount of light over
the sensing area. A white background with even amounts of light over the
sensing area works best, (such as an incandescent ood lamp shining up onto a
white surface above the chronograph)
Wrong Kind of Light
Florescent lamps will not work as a light source for your chronograph, because
although we cannot see it with our naked eye, they are pulsing many times per
second and the chronograph can detect this which renders it useless because
the cycle rate is similar to the speed of projectiles.
If you would like to use your chronograph in an area where improper lighting
conditions exist, Competition Electronics oers a specially designed indoor
lighting system. More information on this is found in the “accessories” section of
this manual.
Lighting & Accuracy
Adverse lighting conditions can cause accuracy issues, and having read the above
you can understand why. Any change in light intensity that a sensor detects other
than the shadow of the intended projectile will result in errors.
(Some Common Conditions that May Cause Problems continued...)
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