Decatur Electronics G3, User Manual & Installation Manual

Page: 54 / 76

G
3
™
U
se
r’s
&
In
sta
lla
tio
n M
an
ua
l
7/October/2020
54
8.2.4 Electromagnetic Interference (EMI)
Operating electric motors can produce EMI . With the DSP
algorithms the G3™ uses, this error will not occur .
8.2.5 Feedback Interference
When radar is directed at computer screens, streetlights, and other
electronic devices, it can display spurious speeds . To correct this
type of interference, relocate the radar antenna .
Figure 8 .2 .5a
Correcting feedback interference
8.2.6 Multi-Path Beam Cancellation
If multi-path beam cancellation occurs, the target motor vehicle
speed sporadically blinks and reappears at semi-random intervals .
This type of interference occurs when the radar loses track of a
target motor vehicle, because the target is reflecting two or more
signals, which are interfering with each other . The G3™ is immune
to multi-path cancellation .
8.2.7 Patrol Harmonics
In all police radar, when a patrol motor vehicle passes a large,
stationary object such as a road sign, building, or overpass, the
return signal can briefly overload the processing circuitry . The
G3™ detects this condition and will not display speeds which are
generated by this overloading .