8.2.1 Angular Interference (Cosine Error Effect) (Continued)
Small angles (less than 10°) have little effect on accuracy. As the angle
increases, the displayed speed decreases. At 90°, the target speed is 0—
grossly incorrect .
8.2.2 Electromagnetic Interference (EMI)
Operating electric motors can produce EMI. To correct the interference,
simply turn off its source.
8.2.3 Feedback Interference
When the radar beam is directed at laptop computer screens, streetlights,
and other electronic devices, it can display spurious speeds. To correct the
interference, relocate the radar gun’s antenna.
8.2.4 Radio Frequency Interference
The system can inadvertently process radio energy as Doppler speeds,
including that from police radios, airport radar, microwave transmission
towers, CB radio transmitters, and AM/FM transmission towers. For this
type of interference to occur, the radar gun must be operating very close
to the radio transmitter.
8.2.5 Scanning
The JUGS Gun
™
is designed to be used while attached to a solid mount or
hand-held in a steady position. Moving or “scanning” the antenna past sta-
tionary objects can cause the system to detect motion. Obtaining a speed
reading from scanning will not happen when you properly use the radar
and is considered deliberate misuse of the system.
8.2.6 Environmental Conditions
Fog, rain, snow, and blowing dust can reduce the detection range.
9. Care, Cleaning, and Storage
• Avoid spilling food, beverages and other liquids on the radar device.
• When you are not using or transporting the device, store it in its
original packaging.
• To clean the radar device, dust it with a soft clean cloth, which is free
of cleaning solutions .
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