Decatur Electronics G3 - Multi-Path Beam Cancellation Immunity; Patrol Harmonics Explained

G3
™
User’s & Installation Manual
7/October/2020
56
The shadowing error is easy to recognize, because the radar patrol
speed and the speedometer reading will vary signicantly. The
target speed in this instance also will vary considerably from your
visual estimation.
• TheG3™usuallyrecognizesandignoresshadowing.On
the rare occasion that it appears, turning the antenna
on and o usually quickly remedies shadowing.
8.2.10 Motor vehicle Ignition Interference
The G3™ has been designed to operate from the motor vehicle’s
cigarette lighter receptacle. However, some motor vehicles exhibit
excessive alternator noise at the lighter receptacle. In these rare
cases, the radar can exhibit erratic readings, especially when the
motor vehicle’s electrical system is operated under heavy load.
Wiring an accessory outlet directly to the battery minimizes the
eect.
If you suspect your motor vehicle’s electrical system, contact
Decatur Electronics’ Customer Service Department for more
information.
9.0 Field Tests
You shall do the following tests to verify the operation and accuracy
of the G3™.
9.1 Operator-Requested Self Test
Pressing the TEST button initiates a comprehensive system self-test,
which checks the numeric displays and runs a target and patrol
speed simulation.
The G3™ will not power down during a self-test and checks the
following:
DISPLAY TEST: Veries that the digit segments and status LED lights
are working correctly and that none of the pixels in the number
segments are missing.