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How Radar Works

Traffic radar, which consists of microwaves, 
travels in straight lines and is easily 
reflected by objects such as cars, trucks, 
even guardrails and overpasses. Radar 
works by directing its microwave beam 
down the road. As your vehicle travels into 
range, the microwave beam bounces off 
your car, and the radar antenna looks for 
the reflections. Using the Doppler Principle, 
the radar equipment then calculates your 
speed by comparing the frequency of the 
reflection of your car to the original 
frequency of the beam sent out.
 

Traffic radar has limitations, the most 

significant of these being that it typically 
can monitor only one target at a time. If 
there is more than one vehicle within 
range, it is up to the radar operator to 
decide which target is producing the 
strongest reflection. Since the strength of 
the reflection is affected by both the size of 
the vehicle and its proximity to the 
antenna, it is difficult for the radar operator 
to determine if the signal is from a sports 
car nearby or a semi-truck several hundred 
feet away.

 

Radar range also depends on the 

power of the radar equipment itself. The 
strength of the radar unit’s beam 
diminishes with distance. The farther the 
radar has to travel, the less energy it has for 
speed detection.
 

Because intrusion alarms and motion 

sensors often operate on the same 
frequency as radar, your V8 will  
occasionally receive non-police radar 
signals. Since these transmitters are usually 
contained inside of a building, or aimed 
toward the ground, they will generally 
produce much weaker readings than will a 
true radar encounter. As you become 
familiar with the sources of these pseudo 
alarms in your daily driving, they will serve 
as confirmation that your V8’s radar 
detection abilities are fully operational.

How “POP” Works

“POP” mode is a relatively new feature for 
radar gun manufacturers. It works by  
transmitting an extremely short burst, 
within the allocated band, to identify 
speeding vehicles in traffic. Once the target 
is identified, or “POPPED,” the gun is then 
turned to its normal operating mode to 
provide a vehicle tracking history, (required 
by law).

How Laser (Lidar) Works

Laser speed detection is actually LIDAR 
(Light Detection and Ranging). LIDAR guns 
project a beam of invisible infrared light. 
The signal is a series of very short infrared 
light energy pulses, which move, in a 
straight line, reflecting off your car and 
returning to the gun. LIDAR uses these light 
pulses to measure the distance to a vehicle. 
Speed is then calculated by measuring how 
quickly these pulses are reflected given the 
known speed of light. 
 

LIDAR (or laser) is a newer technology 

and is not as widespread as conventional 
radar, therefore, you may not encounter 
laser on a daily basis. And unlike radar 
detection, laser detection is not prone to 
false alarms. Because LIDAR transmits a 
much narrower beam than does radar, it is 
much more accurate in its ability to 
distinguish between targets and is also 
more difficult to detect. 

AS A RESULT, 

EVEN THE BRIEFEST LASER ALERT 
SHOULD BE TAKEN SERIOUSLY.

 

There are limitations to LIDAR 

equipment. LIDAR is much more sensitive 
to weather conditions than RADAR, and a 
LIDAR gun’s range will be decreased by
anything affecting visibility such as rain, fog, 
or smoke. A LIDAR gun cannot operate 
through glass and it must be stationary in 
order to get an accurate reading. Because 
LIDAR must have a clear line of sight and is 
subject to cosine error (an inaccuracy, 
which increases as the angle between the 
gun and the vehicle, increases) police 
typically use LIDAR equipment parallel to 
the road or from an overpass. LIDAR can be 
used day or night.

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  Technical Details

Содержание Vector V8

Страница 1: ...Chester OH 45069 USA USA 800 341 2288 www beltronics com 2011 Beltronics Designed and Manufactured In Canada Features speci cations and prices subject to change without notice Model Vector V8 RADAR AN...

Страница 2: ...de by holding both the CITY and BRT buttons down for 2 seconds TheV8 will beep twice and display Program 2 Then hold the RVW button down V8 will scroll through the categories starting with Display Pil...

Страница 3: ...bands ON or OFF by pressingVOLUME MUTE button QuickReferenceCard Beltronics V8 Quick Reference Card Factory Default Settings Removecardalongperforations Remove card along perforations 2 Quick Referen...

Страница 4: ...Page 12 14 QuickReferenceGuide 4 Radar Antenna and Laser Lens The rear panel of your V8 should have a clear view of the road ahead For best performance do not mount the V8 directly behind windshield...

Страница 5: ...from windshield wipers other solid objects and heavily tinted areas that might obstruct the radar antenna or laser lens 6 Installation Windshield QuickMount TheV8 s QuickMount bracket is designed for...

Страница 6: ...ils Mute The Mute button located on theV8 s top case allows you to silence the audio alert during a radar encounter To mute the audio for a single speci c signal brie y press the Mute button After tha...

Страница 7: ...an customize yourV8 for your own preferences The buttons labeled CITY and BRT are also used to enter the Program Mode REVIEW your current program settings and to CHANGE any settings as desired The wor...

Страница 8: ...its power on indication factory default Pilot H Letter In this setting yourV8 will display H for Highway C for City and A forAutoScan Voice Voice On Voice announcements on In this setting all radar l...

Страница 9: ...radar and laser frequencies are monitored This is the factory setting and it is recommended that you use yourV8 in this mode BandsMOD In this setting yourV8 will warn you with an audible alert and ass...

Страница 10: ...in TheV8 suddenly sounds a continuous tone for the appropriate band received All segments in the Signal Strength Meter are lit A brief laser alert TheV8 receives weak signals These signals may be a li...

Страница 11: ...adar detection abilities are fully operational How POP Works POP mode is a relatively new feature for radar gun manufacturers It works by transmitting an extremely short burst within the allocated ban...

Страница 12: ...ad 27 Poor Road Surface Ahead 28 School Bus Loading Unloading 29 No Passing Zone 30 Dangerous Intersection Ahead 31 Stationary Emergency Vehicle Ahead 32 Forfutureuse Weather Related Hazards 33 High W...

Страница 13: ...making contact with the windshield to provide stability While holding down theV8 s QuickMount button slide theV8 toward the windshield so that the back top edge makes rm contact A loose power connect...

Страница 14: ...must do to maintain this warranty Show original proof of purchase from an authorized BELTRONICS dealer Warranty Exclusions Warranty does not apply to your product under any of the following conditions...

Страница 15: ...________ City_______________________________________ State_____________ ZIP_____________ _ Phone Number In case we have a question _____________________________________________ 2 Product Purchased BEL...

Страница 16: ...Remove card along perforations 28...

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