Decatur Electronics Genesis II Select - Performance Tips and Interference; Interference Sources and Remedies

Genesis II Select
™
User’s & Installation Manual
16/September/2015
45
When the correct distance is set, you can time motor vehicles as they
cross between the markers in your measurement area. Use the LOCK
button to start and stop the timer. The time will be counted and
displayed in the LOCKED window. Each sequential number represents
a tenth of a second (there is no decimal point displayed between the
right two digits). For example 150 represents 15.0 seconds.
After you have started and stopped the timer, a calculated speed
will be displayed in the TARGET window. The speed shown will be in
km/h.
The accuracy of the stopwatch mode will be limited by the precision
in which the distance measurement was made and the precision in
which the timer start and stop was activated. Press the MODE button
to exit the Stopwatch mode.
7. Performance Tips
Understanding potential radar interference and what to do when it
occurs can greatly improve your results.
7.1 How Radar Works
Determining a motor vehicle’s speed begins with the radar antenna
transmitting and directing a beam of microwave energy (radio
waves) at an approaching (or receding) target motor vehicle. When
energy from this beam strikes a moving motor vehicle, a small
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the speed of the target motor vehicle. This is known as the Doppler
Eect. The radar device then determines the target motor vehicle
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transmitted signal.
7.2 Interference Sources and Remedies
When properly installed and operated, Doppler radar technology
is accurate and reliable. However, variations in the environment
can cause situations and circumstances, which can cause spurious